Freezer / Refridgerator Swing Door T 23DT Service Manual

User Manual: Freezer / Refridgerator Swing Door T-23DT

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Technical Service Manual
(All Models)

Index
Page

Cabinet Installation and Set-Up _____________________________________________________4
Electrical Requirements______________________________________________________________5
Conductors and Circuits _____________________________________________________________6
Cabinet Installation and Set-Up Checklist ______________________________________________7
Cabinet Installation and Set-Up (Swing & Slide Doors) ___________________________________8
GDM/T - Series Freezers _____________________________________________________________9
Remote Condensing Unit ____________________________________________________________10
Temperature Control Altitude Adjustment _____________________________________________11
Temperature Control Altitude Adjustment(new temp. control) ____________________________12
Defrost Controls ________________________________________________________________13-14

Preventative Maintenance __________________________________________________________16
Cabinet Maintenance Schedule _______________________________________________________17
Condenser Cleaning ________________________________________________________________18

Refrigeration Section _______________________________________________________________20
Polyol Ester Lubricant - The CFC Report _____________________________________________21
Service Contractors: Attention Please _________________________________________________22
Basic Refrigeration - The Capillary Tube System _______________________________________23
The Refrigeration Cycle ____________________________________________________________24
True’s Remote System - How it Works ________________________________________________25
Basic Refrigeration - Control of Liquid Refrigerant Floodback... __________________________26

General Maintenance & Repairs ___________________________________________________28
Top Removal for TBB and TDD Units _________________________________________________29
Top Removal forTD and T-GC Units _________________________________________________30
TPPCountertop Replacement Instructions_____________________________________________31
Top Removal for Various Coolers - TSSU, TWT, TUC ___________________________________32
Top Removal forTRCB 50 and 79 ____________________________________________________33
End Cap Replacement-T-Series Swing Door _________________________________________34-35
Side Panel Replacement - GDM Series ________________________________________________36
Side Panel Replacement - GDM-33C-PT _______________________________________________37
Floral Case Baffle Installation _______________________________________________________38
GDM-23FC Mirror Retrofit Kit ______________________________________________________39
Undercounter Refrigerator/Freezer Perimeter Heater Wire Replacement ___________________40
GDM & T-Series Freezer Perimeter Heater Wire Replacement ____________________________41
TD-Series and Glass Chillers ________________________________________________________42
Temperature Control Replacement for Cabinets Larger than 1/3 HPCompressors ________43-47
Temperature Control Change-Out - GDM _____________________________________________48
Temperature Control Change-Out - GDM & T-Series____________________________________49
Replacing Temperature Controls in GDM-7, GDM-10, & GDM-12 models __________________50
Surge Protector’s for the GDM-Series ______________________________________________51-52

Door and Lock Repair ______________________________________________________________54
Glass Insert - Slide Door ____________________________________________________________55
Slide Door Instruction - To improve slide door closing___________________________________56
Wiper Gasket Installation ___________________________________________________________57
Removal and Installation of GDM-Swing Door ______________________________________58-59
Torsion Spring Replacement - Swing Door __________________________________________60-61
IDLLamp Replacement ____________________________________________________________62

Index
Page
Glass Insert - Swing Door ________________________________________________________63-64
Glass Insert Gas Release (High Altitude Installation) ____________________________________65
GDM & T-Series IDLGlass Insert Replacement ________________________________________66
Replacement of Door Frame Heater on IDL Freezer Doors _______________________________67
IDL Door Wire Harness Replacement ______________________________________________68-69
Shimming the Glass Insert ________________________________________________________70-71
Lock Installations - GDM Single Swing Door (GDM-23/26) _______________________________72
Barrel Lock Installation (GDM Slide DoorModels) _____________________________________73
Slide Barrel Lock (Top View) ________________________________________________________74
Slide Barrel Lock (Front View)_______________________________________________________75
Lock Installation (GDM-5 & GDM-5PT Swing Door Models) _____________________________76
Ratchet Lock & Plastic Door Stop - Slide Door ______________________________________77-78
Lock Installation - TD Models _______________________________________________________79

General Instructions ________________________________________________________________80
Overshelf Option - TSSU, TWT, TUC_________________________________________________81
Installing The Crumb Catcher _______________________________________________________82
Field Installing The TSSU Series 19” Cutting Board_____________________________________83
Anchoring the TSSU Hood Cover ____________________________________________________84
Installing the TTPSeries Service Shelf ________________________________________________85
Field Installing the TPPService Shelf _________________________________________________86
Sneezeguard Option - TSSU _________________________________________________________87
Castor and Leg Frame Installation ___________________________________________________88
GDM-33C-PT Castor Mounting Assembly _____________________________________________89
TDD-1 CO2 Knock-out ______________________________________________________________90
TDD-2,3,4 (and Club Top models) CO2 Knock-out ______________________________________91
Vandal Panel Installation for a GDM-33CPT-54 ________________________________________92
Vandal Panel - GDM-69 __________________________________________________________93-94

Troubleshooting ____________________________________________________________________96
Calibrate Temperature Control____________________________________________________97-98
Troubleshooting and Service Chart _______________________________________________99-100
Capillary Tube Replacement Instructions - Upright GDM/T-Series Equipment __________101-102
Refrigeration Trouble Shooting Chart - Refrigerator ________________________________103-104
Refrigeration Trouble Shooting Chart - Freezer ____________________________________105-106
Capillary Tube Replacement Instructions - Refrigerators and Freezers ____________________107
Field Troubleshooting __________________________________________________________108-110
Troubleshooting Fluorescent Lighting Circuits
Rapid Start, Electric, and Preheat Fluorescent Light Circuits ____________________________111
GDM & T Series Coolers IDLConnector _____________________________________________112
Equipment Care and Cleaning ____________________________________________________114
Cleaning Your Cabinet_____________________________________________________________115
Stainless Steel Equipment Care and Cleaning (NAFEM)_____________________________116-120

CABINET
INSTALLATION
AND SET-UP

Please read these instructions. Failure to follow maintenance guidelines
may result in a non-warranted service call.

4

ELECTRICAL REQUIREMENTS
There are several factors that will affect the proper operation of your True unit. Among
these factors, the electrical installation is the most important and should always be
checked before connecting your True cabinet as follows:

1. Make sure the circuit is dedicated exclusively to your True unit.

2. Make sure the electrical installation complies with national, state, and local codes.

3. Make sure the circuit is properly ground.

4. Check circuit for proper voltage at receptacle

(+/-10% 115 Volt)
(- 5% + 10% 208/230 Volt)

5. Make sure that the wire gauge and breaker sizes are correct and comply with the minimum allowance for voltage drops

WARNING: FAILURE TO COMPLY WITH THESE REQUIREMENTS MIGHT
RESULT IN PERSONAL INJURY AND (OR) PROPERTY DAMAGE, AND WILL VOID
WARRANTY.

5

CONDUCTORS AND CIRCUITS
Wire Gauge for 2% Voltage Drop in Supply Circuits
115 Volt
Amps
2
3
4
5
6

20
14
14
14
14
14

30
14
14
14
14
14

Distance In Feet To Center of Load
40
50
60
70
80
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
12

90
14
14
14
12
12

100
14
14
14
12
12

120
14
14
12
12
10

140
14
14
12
10
10

160
14
14
12
10
10

7
8
9
10
12

14
14
14
14
14

14
14
14
14
14

14
14
14
14
12

14
14
12
12
12

14
12
12
12
10

12
12
12
10
10

12
12
12
10
10

12
10
10
10
8

10
10
10
10
8

10
10
8
8
8

10
8
8
8
8

8
8
8
8
6

14
16
18
20
25

14
14
14
14
12

14
12
12
12
10

12
12
10
10
10

10
10
10
10
8

10
10
10
8
8

10
8
8
8
6

8
8
8
8
6

8
8
8
6
6

8
8
8
6
6

6
6
8
6
5

6
6
8
5
4

6
6
5
5
4

30
35
40
45
50

12
10
10
10
10

10
10
8
8
8

8
8
8
6
6

8
6
6
6
6

6
6
6
6
5

6
6
5
5
4

6
5
5
4
4

6
5
4
4
3

5
4
4
3
3

4
4
3
3
2

4
3
2
2
1

3
2
2
1
1

230 Volts
Amps
5
6
7
8
9

20
14
14
14
14
14

30
14
14
14
14
14

40
14
14
14
14
14

100
14
14
14
14
12

120
14
14
14
12
12

140
14
14
12
12
12

160
14
12
12
12
10

10
12
14
16
18

14
14
14
14
14

14
14
14
14
14

14
14
14
14
14

14
14
14
14
12

14
14
14
12
12

14
14
12
12
12

14
12
12
12
10

12
12
12
10
10

12
12
10
10
10

12
10
10
10
8

10
10
10
8
8

10
10
8
8
8

20
25
30
35
40

14
14
14
14
14

14
14
12
12
12

14
12
12
12
10

12
12
10
10
10

12
10
10
10
8

10
10
10
10
8

10
10
8
8
8

10
10
8
8
6

10
8
8
8
6

8
8
6
6
6

8
6
6
6
5

8
6
6
6
5

50
60
70
80
90
100

12
12
10
10
10
10

10
10
10
8
8
8

10
8
8
8
6
6

8
8
6
6
6
6

8
6
6
6
6
5

6
6
6
5
5
4

6
6
5
5
4
4

6
6
5
4
4
3

6
5
4
4
3
3

5
4
4
3
3
2

4
4
3
2
2
1

4
3
2
2
1
1

Distance In Feet To Center of Load
50
60
70
80
90
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14

6

CABINET INSTALLATION AND SET UP CHECKLIST

CABINET INSTALLATION AND SET UP CHECKLIST

1) Make sure cabinet is plugged into dedicated outlet. Before plugging in cabinet check to make sure
voltage is adequate for your cabinet. Do not use an extension cord, this will void cabinet
warranty.

2) Follow installation instructions for your specific cabinet. Each cabinet is shipped with specific
installation and set up instructions. It is very important to read all information sent with your new
cabinet

3) Make sure shipping blocks (slide doors) and door support brackets (swing doors) are removed.
Doors will not function correctly if this step is not followed.

4) Make sure that your cabinet is leveled correctly. Follow specific instructions with your cabinet and
use castor shims were they are needed. Make sure that legs and castors are installed per instructions. If directions are not followed this may cause premature unwarranted failure of cabinet legs
or castors. If your cabinet is not level this can cause performance problems that will not be covered as warranty repairs.

5) When cabinet is set in its final location, make sure the specific clearance guidelines are followed.
These are very important for ventilation in the condensing unit area. If not followed can cause
premature compressor failure.

6) Follow altitude adjustment for temperature control if applicable.

7) IF YOU HAVE ANY QUESTIONS ABOUT SET UP OR INSTALLATION OF YOUR

NEW CABINET PLEASE CALL OUR TECHNICAL SERVICE DEPARTMENT AT 1800-325-6152.

7

INSTALLATION INSTRUCTION
CABINET INSTALLATION AND SET-UP (SWING & SLIDE DOORS)
SLIDE DOORS

SWING DOORS

A. Remove all transparent tape on the
door area. Remove the foam blocks in
top channel in front on the right door
approximately 1”x1”x20” (2.5 x 2.5 x
50 cm).

A. Remove all other tape securing
the doors to the cooler. Remove
the blue foam blocks approximately 1”x3”x1” (2.5 x 7.6 x 2.5 cm)
that are between the door and the
cooler. One foam block is located
on each side of the door frame. (left
and right).

B. Remove both plastic brackets
secured by tape from under the left
door.

NOTE
C. Open the left door.

Your True Merchandiser has been
secured for safe shipping. During
installation, it is necessary to remove
the door support bracket.

D. Remove the foam block from the
top channel behind the left door.
E. Remove both plastic brackets from
under the right door (see figure 2).

B. Remove the two phillips screws
that secure the bracket to the door.
(see figure 1).

NOTE
Door packing materials should NOT
be removed until cooler is placed on
location.

C. Remove bracket and save for
future shipping.

TRANSPORTATION OF THE
COOLER WITHOUT THE DOOR
PACKING MATERIALS IN
PLACE CAN RESULT IN DAMAGE TO DOORS, DOOR
ROLLERS AND V-TRACK

D. Replace screws securely into door.

(figure 2)

(figure 1)

8

INSTALLATION INSTRUCTION
GDM / T-Series Freezers
______ Installing Castors _______
Install castors in the bottom rail assembly
on the underside of the cooler. Castors
with brakes should be installed in front.
To obtain maximum strength and stability
of the unit, it is important that you make
sure each castor is secured with a 3/4"
(19mm) open-end wrench. The bearing
race on the castor must make firm contact
with the rail.
______ Installing Leg Levelers _______
Screw leg levelers into the four corners of
the lower rail assembly (larger models
include levelers centered front and back
also).
CAUTION
To avoid damage to lower rail assembly,
raise unit slowly and carefully to upright
position.

LEVELING
A. Set unit in its final location. Be sure
there is adequate ventilation in your room.
Under extreme heat conditions, (100°F+,
38°C+), you may want to install an exhaust
fan.
Warning
Warranty is void if
ventilation is insufficient.
B. Proper leveling of your True cooler is
critical to operating success. Effective
condensate removal and door operation
will be effected by leveling.
C. The cooler should be leveled front to
back and side to side with a level (see figure
4). Place the level in the interior floor of the
unit in the four positions illustrated.
For Castored Models:
Four shims have been provided in warranty packet for leveling castored units posi-

tioned on uneven floors. Shims must be
positioned between rail end and bearing
race. (see figure 3).
If the cabinet is not level use a 3/4" (19mm)
open-end wrench to turn the anchoring bolt
under the bearing race counter-clockwise until
the cabinet is level.
Install the desired number of shims, making
sure the slot of the shim is in contact with the
threaded stem of the castor.
If more than one shim is used, turn the slot at
a 90° angle so they are not in line.
Turn the anchoring bolt clockwise with a 3/4"
(19mm) open-end wrench to tighten and
secure the castor.
Leg Levelers For GDM Models:
If the cabinet is not level adjust leg levelers by
first relieving weight to leveler and adjusting
by either hand or wrench. Repeat with all leg
levelers until cabinet is level in all directions.
D. Ensure that the drain hose or hoses are
positioned in the pan.
IMPORTANT
Make certain the metal strap holding the
compressor during shipment is removed.
Failure to cut strap could result in excessive
noise and vibration (freezer).
E. Free plug and cord from inside the
lower rear of the cooler(do not plug in).

figure 3.

F. The unit should be placed close
enough to the electrical supply so that
extension cords are never used.
figure 4.

Warning
Compressor warranties are void if the
unit is more than 6-1⁄2 ft. (2m) from plugin connection.

9

INSTALLATION INSTRUCTION
Remote Condensing Unit
For cabinet installation, use instal- parallel with the compressor crank
shaft and as close to the compressor
lation instructions with cabinet.
as possible.
Leak Check and Evacuation:
Receiving: Upon receiving this
piece of equipment remove all After all refrigerant line connections
outer packaging and inspect for have been complete, the entire sysconcealed damage. If damage is tem should be leak checked. This
found, indicate such on the carriers includes field and factory connecBill of Lading for claim to be filed. tions. Charge system with refrigerant
In order to minimize damage to this vapor and add enough nitrogen to
equipment, it is recommended that raise pressure to 150 PSIG maxithe packaging remains in place mum.
Leak check the entire system.
until it is in its final location.
Condensing units located indoors Make repairs as necessary.
or in confined areas must have adeEvacuation Process: To obtain
quate ventilation. Condensing units
require 1000 cfm of air per ton of the proper level of dehydration in the
refrigeration system, a vacuum of at
refrigeration.
True Manufacturing Company least 500 microns must be drawn. Do
strongly recommends the use of not use the system’s compressor as a
compressor crankcase heaters and vacuum pump and do not operate
headmaster valves be used at all compressor while system is in a vactimes with a remote compressor uum.
Open all system service valves to
unit. Not using these components
may void the compressor warranty. discharge any pressure in the system.
Refrigerant Lines: All refriger- Connect vacuum pump to high and
ant piping should be ACR type. It low side of system. Pull vacuum.
Break the vacuum with system
is recommended that all brazed
joints be made with “hard solder” refrigerant. Pull vacuum again, down
such as Silphos or Unibraze. to 500 microns or lower.
Shut valves before charging.
Solder such as 95-5 or other soft
solders are not recommended.
Charging Process: When initially
All suction lines must be insulated, with at least 1/2” wall insula- charging a system that is in a vacuum,
tion. Keep all lines as short as pos- liquid refrigerant can be added directly into the receiver tank without
sible.
Always pitch suction lines down- compressor running.
If you have difficulty charging the
ward in the direction of flow.
Generally 1/2” pitch for each 10 ft. correct amount of refrigerant into the
of line is adequate for good oil system you may start the system to
return. Field installation vibration complete the charging process.
eliminators should be field installed
10

Add the correct amount or until the
sight glass indicates a full charge,
with a clear window, bubbles indicate
more refrigerant is required. Care
should be taken not to overcharge the
system at this point. The evaporator
fans must be operational while charging; cooler fans must run continuously, freezer fans will be delayed by the
fan control. Make sure freezer fans
are running during final charging
process.
Keep a close check on suction and
discharge pressures. After system has
stabilized, check for excessive liquid
floodback to the compressor. If
flooding occurs (less than 8˚ superheat in freezers, 12˚ in coolers) adjust
expansion valve Clockwise, 1/2 a
turn at a time, recheck before leaving
installation.
Check full load amps on the compressor, this can be found on the compressors nameplate, Check compressor oil level. Normal charge is indicated by 1/2 of the sight glass having
oil in it.
Final Check: Check high and low
pressure control settings. Set thermostat to desired cabinet temperature.
Check defrost timer settings (if applicable). Check voltage, this must be
100% of the nameplate rated voltage
for operation. Anything more or less
should be corrected immediately.
Replace all service valve caps and
secure all unit covers.

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL ALTITUDE ADJUSTMENT
Chart

Figure 1

Height

CCW
Adjustment
(based on 360°/
complete turn)

2000'
3000'
4000'
5000'
6000'
7000'
8000'
9000'
10,000'

42°
78°
114°
150°
186°
222°
258°
294°
330°

Figure 2

This scale may be
used as a guide
for measuring
degrees of rotation required for
altitude correction.
The arrows indicate
direction of screw
rotation.

___________ STEP 1 ___________
Unplug the cooler.

___________ STEP 5 ___________

___________ STEP 2 ___________

Turn screws counterclockwise (CCW)
See Chart and figure 2.

REQUIRED TOOLS
• Phillips Head Screwdriver
• Hex Head Driver
• Jewelers Screwdriver

IMPORTANT
Upright models ordered with "High
Altitude" temperature controls
are pre-calibrated and do not
require adjustment.

Turn the temperature control to the "9"
position.
___________ STEP 3 ___________
Remove the screws that secure the
mounting plate to the evaporator top.
("A") See figure 1.
___________ STEP 4 ___________
Pull control down gently from housing.

11

___________ STEP 6 ___________
Reassemble to cooler housing and
return the temperature control to the
"5" position.

INSTALLATION INSTRUCTION
Danfoss Temperature Control Adjustment for High Altitude Applications
Terms:
Cut-out - Temperature sensed by the
controller that shuts the compressor
off.
Cut-in - Temperature sensed by the
controller that turns the compressor on.
Instructions:
___________ STEP 1 ___________
Mechanical temperature controllers are
affected when functioning at high altitude. The cut-in and cut-out temperatures will be colder than when the controller function closer to sea level.

Cut-out Adjustment Screw
Allen (5/64” or 2 mm.)

___________ STEP 2 ___________
For installations above 2,000 ft., it may
be necessary to “warm-up” the set
points. To make the adjustment, insert
the appropriate tool in each adjustment
screw and turn 1/4 of a revolution
clock-wise (to the right). This procedure will adjust both the cut-in and
cut-out about 2˚F warmer.
___________ STEP 3 ___________
Make sure to re-connect the pink wires
to the proper spade terminal when
re-installing.

Cut-in Adjustment
Screw Torx (T-7)

Compressor Connection (pink)
Compressor Connection (pink)

12

DEFROST CONTROLS
Defrost Time Clock Adjustment

Recommended Defrost Settings
True Manufacturing has factory set your defrost time clock to a recommended time and duration defrost
scenario. All refrigeration equipment operating below 30˚F will accumulate frost on the evaporator coil
and will require routine defrost. Your True equipment has been designed for three defrost periods (8:00
a.m., 12:00 p.m. and 4:00 p.m.).
If you decide to deviate from these defrost time settings please follow the procedures and adjustment
below.
Graduated
Time Disk

REQUIRED TOOLS
• Slotted Screwdriver

Locating The Defrost Timer
Take off lower grill assembly by removing
four (4) corner screws.

Time
Indicator

Adjusting
Knob
Trip Pin

Duration
Indicator

Extra Trip
Pin
Trip Pin
Hole

Single door models:
Defrost timer is located in the lower right
corner behind the louvered grill.
Two door models:
Defrost timer is located in the middle of
the cabinet, behind the louvered grill.
Timer is mounted to the left of the centered
ballast box.
Three door models:
Defrost timer is located on the left upright
post behind the louvered grill.

Adjusting The Defrost Control
(time initiated, temperature terminated)
Your True freezer contains a defrost
system that is temperature terminated,
however the time clock has been designed
with a time termination back-up so that the
defrost period will not exceed twenty
minutes. While True recommends 3
defrost periods not to exceed 20 minutes
the procedure below should be followed to
customize your specific needs.

Warning
Always follow the manufactures
recommended settings when programming the amount and duration of the
defrost cycles.

___________ STEP 2 ___________
In order to program the time to begin the
defrost cycle, insert threaded trip pins into
the graduated time disk hole that
corresponds to your customized defrost
needs.

___________ STEP 1 ___________
Referencing the outer graduated time disk,
position the current time of day to align
with the “TIME” indicator. To move the
graduated time disk, grasp the adjusted
knob and turn counter clockwise until the
current time of day aligns with the “TIME
indicator.

13

___________ STEP 3 ___________
True recommends a 20 minute defrost
cycle three times per day. Changing the
recommended duration requires pressing
down and sliding the copper duration
indicator.

DEFROST CONTROLS

2. TIME INITIATED, TIME TERMINATED
Like in the time initiated, temperature terminated controls; these systems have a temperature sensor that will
disconnect the heaters to keep the cabinet from over heating. However it won’t restart the freezing cycle until
the control completes the factory set time, which in our case is usually 20 minutes. These systems are also
equipped with temperature sensors to delay the fan motors once the defrost cycle has been completed, to prevent the circulation of warm air inside the cabinet.
To adjust the defrost cycle time there is only one possible adjustment; Once the cabinet has reach the design
temperature, pick the time of the day that you want the unit to defrost. Turn the actuating gear clockwise until
the contacts change position initiating the defrost cycle.

MOTOR
3 Line
4 Compressor
1 Common
Comun
2 Heaters

Actuating Gear

14

Notes

PREVENTATIVE
MAINTENANCE

Please read these instructions. Failure to follow maintenance
guidelines may cause a non-warranted cabinet repair service.

16

CABINET MAINTENANCE SCHEDULE
Monthly, Quarterly, and Yearly

CABINET MAINTENANCE SCHEDULE
MONTHLY
1. Check product temperature.
2. Brush off condenser coil.
3. Inspect lamps and lamp holder connections.
QUARTERLY
1.
2.
3.
4.

Check physical condition of condenser coil and evaporator coil (straighten fins if necessary.
Blow out condenser coil with compressed air.
Brush off evaporator coil if needed.
Check physical condition of gaskets and also make sure they are sealing correctly.
YEARLY

1.
2.
3.
4.

Check operation of all moving parts (fan motors, doors, defrost timers, & IDL door cords)
Check all electrical connections, make sure they are all tight and crimps in good condition.
Check defrost timer contacts, make sure they are not pitted.
Check rear condenser coil screen (clean if necessary).

17

GENERAL MAINTENANCE
CONDENSER CLEANING

Step 4

Step 6

REQUIRED TOOLS

____________ STEP 4 ____________

____________ STEP 7 ____________

• Phillips Screwdriver
• Stiff Bristle Brush
• Adjustable Wrench

Clean off accumulated dirt from condensing
coil with a stiff bristle brush.

Replace cardboard cover. Carefully slide
compressor assembly back into position
and replace bolts. When reinstalling
condensing unit becareful not to crimp
or damage the tubing between the condensing unit and the cabinet.

____________ STEP 5 ____________
____________ STEP 1 ____________
Disconnect power to unit.

Lift cardboard cover above fan at plastic
plugs and carefully clean condenser coil
and fan blades.

____________ STEP 8 ____________

____________ STEP 2 ____________
____________ STEP 6 ____________
Take off lower grill assembly by removing
four (4) corner screws.

After brushing condenser coil vacuum dirt
from coil, and interior floor.

Reinstall louver assembly onto unit with
appropriate fastener and clips. Tighten all
screws.

____________ STEP 3 ____________

____________ STEP 9 ____________

Remove bolts anchoring compressor
assembly to frame rails and carefully slide
out. (tube connections are flexible)

Connect unit to power and check to see if
compressor is running.

18

Notes

REFRIGERATION
SECTION

In this section you can find information that is helpful for the
customer and the service technician to help you understand how
our refrigeration system works along with how to diagnose
and correct any problems that might arise.

20

POLYOL ESTER LUBRICANT
THE CFC REPORT - LEADING THE WAY INTO A NEW AGE

Polyol Ester Lubricant
packaged with much more care than conventional
oils. Copeland has not tested all types of compressors
or all combinations of refrigerant and con-Industry
knowledge of POE must rapidly increase in order to
maintain and improve expected reliability.

After exhaustive research and testing, Copeland has
determined that PolyolEster (POE) lubricants provide the best combination of characteristics for use
with the new generation of chlorine-free refrigerant.
In addition to providing superior lubrication. POE
has other advantages which increase its attractiveness for use in refrigeration.

After conducting extensive tests for both compressor
durability and reliability on more than 40 refrigerant/oil combinations, Copeland identified Mobil Oil
Corporation as our preferred U.S. supplier of polyol
ester oil in terms of both the oil itself and Mobil's
ability to package and deliver the oil with acceptable
low moisture levels. Because of its technical superiority. Copeland has approved Mobil's EAL Artic 22
CC polyol ester oil for use in our compressors.

Polyol Ester is a synthetic lubricant used primarily
for jet engine lubrication. It is manufactured by
numerous companies and there are various types and
grades available. Therefore, it is important to recognize that all POE's are not the same.
Since POE is synthetic, it has better resistance to
high temperature degradation than refrigeration mineral oils. POE is also made from more expensive
base stocks making it significantly more expensive
than other refrigeration oils. Furthermore, POE is
compatible with common refrigerant and mineral oil.
Therefore, a compressor containing the oil can be
installed in a system containing HCFC's or HFC's. In
short, POE provides significant flexibility in the face
of changes brought on by the CFC issue.

To serve our customers, Copeland will distribute
EAL Artic 22 CC to the after market through
Copeland's network of 800 authorized wholesalers.
The lubricant will be charged into our new production compressors whenever a polyol ester is specified.
Currently, certain approved compressor models sold
to OEMs are available with this oil installed during
manufacture. Refrigeration service compressors
charged with POE will be supplied in the near future.

HFC refrigerant require the use of POE for all
Copeland compressors. This is necessary for two
specific reasons. First, mineral oils are not readily
miscible in HFC's. When using HFC's conventional
oils will not return to the compressor. Secondly, the
chlorine contained in CFCs and HCFCs aids in the
lubricity of mineral oil.
One drawback from using POE is that they absorb
moisture from the air at a much greater rate than do
mineral oils. As a result, they must be handled and

21

SERVICE CONTRACTORS
..... ATTENTION PLEASE .....

SERVICE CONTRACTORS
..... ATTENTION PLEASE .....
This is a Tecumseh hermetic compressor specifically designed for use with environmentally
friendly HFC refrigerant R404A. However, it is acceptable to use this compressor as a service
replacement with R502.
The Tecumseh approved polyolester (POE) oil contained in this compressor is compatible
with all internal component materials and is miscible (mixes) with R502 to effect proper oil
return. Using R502 with this R404A compressor will result in very similar performance to
the replaced R502 compressor. But, the following precautions should be taken.
1) Care must be taken to assure that most of the mineral oil is removed from the system
before the new compressor is installed. Small amounts of mineral oil (up to 5%) left in
the system are acceptable but 1% or less if achievable is desired.
2) POE oils are 100 times more hygroscopic (ability to absorb moisture) than mineral oils
thus the utmost care must be taken to prevent moisture from entering the system. The
compressor or system should not be left open to the atmosphere for longer than 15 minutes maximum.
3) The appropriate new drier provided must be installed in the system.
4) Established industry procedures for recovery, evacuation, refrigerant charging and leak
testing should be followed.

TRUE MANUFACTURING COMPANY

22

CFC & Refrigeration Basics
BASIC REFRIGERATION

THE CAPILLARY TUBE SYSTEM
Evaporator

Accumulator
Condenser

FilterDrie

Capillary
Tube

Heat
Exchanger

Suction
Line
Motor Compressor

LOW PRESSURE
GAS

HIGH PRESSURE
GAS

Starting at the Capillary Tube, refrigerant flows into
the evaporator and changes from a liquid to a gas. As it
absorbs heat, after leaving the evaporator, it flows
through the accumulator. The accumulator is a part
that is designed like a reservoir to allow any refrigerant,
that has not changed from a liquid to a gas, space to do
so before returning to the compressor. After flowing
through the accumulator, refrigerant flows through the
suction line as a low pressure gas into the compressor.
The compressor pumps the refrigerant from a low pressure gas to a high pressure gas and forces it into the
condenser. In the condenser with a fan circulating air
over it the refrigerant condenses from high pressure

LOW PRESSURE
LIQUID

HIGH PRESSURE
LIQUID

gas to high pressure liquid. After leaving the condenser
refrigerant flow through the drier which is designed to
remove any particles or moisture in the system.
Refrigerant then flows through the liquid line into the
capillary tube. The capillary tube is designed to allow
a certain amount of refrigerant to flow through it to
keep the evaporator evenly flooded. The capillary tube
is taped to the suction line to cool the liquid to allow
the best heat transfer. When the refrigerant enters the
evaporator as a liquid, warm air from inside the cabinet
is circulated through the evaporator coil and the heat
from the air is then absorbed in the refrigerant.

23

®
Evaporator
Fan Motor

Evaporator

Thermostat

As air is pushed
through the
evaporator by the
fan motors liquid
refrigerant absorbs
heat through the
walls of the
evaporator coils and
vaporizes - thus
becoming a low
pressure gas.

Senses evaporator
temperature
@40°F cuts in starts compressor
@18°F cuts out shuts compressor
off

Capillary
Tube
Meters the amount
of liquid refrigerant
into the evaporator
where it absorbs
heat.

Hot air out

Condensate
Pan

The resulting warm air
from the condensor
blows over the
condensate pan and
evaporates the water.

Cool air in
Compressor
Fan Motor

Color Chart
Dark Blue = Low pressure liquid
Light Blue = Low pressure gas
Red = High pressure gas

Compressor

Condenser

Combines heat absorbed
in the evaporator coils with
heat of compression from
the piston stroke then
pushes high pressure gas
(vapor) on into the
condenser.

High pressure gas is
condensed into a high
pressure liquid when the
heat is removed. By pulling
air in the front of the
condenser by means of the
fan motor. The air will be
used to evaporate the drain
pan water.

Pink = High pressure liquid

24

TRUE’S REMOTE SYSTEM - HOW IT WORKS
Liquid and Suction
Tubing

Refrigeration Schematic Diagram

‘P’ Trap
TXV Bulb
Suction Line

External
Equalizer

TXV

Liquid Line
Solenoid

Feeder
Tubes

Evaporator
Coil

Distributor
with Nozzle

distributor is used which evenly distributes refrigerant to each circuit. The TXV is made to open and
close by its sensing bulb which senses suction line
temperature on the other side of the evaporator. The
sensing bulb has the same refrigerant that is used in
the refrigeration system. When hot air passes over
the evaporator coil and warms the refrigerant, the
sensing bulb senses the warm condition and pushes
the sensing valve open. When too much refrigerant
The liquid line shall enter the cabinet and go direct- flows into the evaporator, the sensing bulbs refrigerly to the liquid line solenoid, this is a normally ant cools and contracts allowing the diaphragm to
closed refrigerant valve which will be energized and ease away the needle valve, thus closing the valve.
wired in series with the thermostat. When the thermostat is closed (requires refrigeration) the solenoid The external equalizer is another sensing element
will be energized to open, allowing refrigerant to which helps the sensing bulb to more accurately feed
pass to the “thermal expansion valve” (TXV). The refrigerant. The external equalizer line must be
TXV allows refrigerant through to the evaporator down-stream of the TXV bulb. The TXV bulb
coil. If the evaporator has more than one circuit, a should be insulated with corktape.
The suction line will exit the evaporator coil as usual
for self-contained models, except it shall include an
Oil “P” trap. This is used to trap oil in low velocity
suction gases at a point just prior to a vertical rise.
Whether the compressor is to be located above or
below the evaporator, (True does not have control
over this), the suction will always have a “P” trap in
case the compressor is installed overhead.

25

CFC & REFRIGERATION BASICS
BASIC REFRIGERATION

Control of Liquid Refrigerant Floodback To The Compressor During Operation
Fan

Fan

Filter

Evaporator

Condenser

Expansion Device

Compressor

LOW PRESSURE HIGH PRESSURE LOW PRESSURE HIGH PRESSURE
GAS
GAS
LIQUID
LIQUID

Fan

Liquid floodback during operation can be caused by fan
failure, or dirty clogged filters that can reduce the heat
transfer rate to such a point that the liquid refrigerant
floods through, instead of vaporizing. When this situation
occurs, liquid refrigerant may enter the compressor under
conditions which result in separation of the oil and refrigerant. This separation may result in an accumulation of the
refrigerant under the oil. Thus, when the compressor is
started, the first liquid to be pumped to the bearings will
probably be refrigerant, not oil. Even if this oil-refrigerant
separation does not occur, the large amount of liquid refrigerant in the crankcase will instantly vaporize and boil away
the oil charge when the compressor starts. Thereby leaving
the compressor oil-starved for many seconds.

Fan

Filter

Evaporator

Condenser

Accumulator

Expansion Device
Crankcase
Heater
Compressor

Liquid floodback can be prevented by the application of a
properly designed and sized suction line accumulator.
Using a totally new concept, Tecumseh engineers have
designed a suction line accumulator available in eight basic
sizes covering a full range of system applications and
refrigerant. When properly selected based upon system
charge, a Tecumseh suction line accumulator will improve
compressor reliability and endurance by preventing damaging liquid refrigerant floodback.

LOW PRESSURE HIGH PRESSURE LOW PRESSURE HIGH PRESSURE
GAS
GAS
LIQUID
LIQUID

LIQUID REFRIGERANT ACCUMULATION IN THE COMPRESSOR CAN ALSO BE CAUSED BY
LIQUID MIGRATION TO THE COMPRESSOR DURING PERIODS OF SHUTDOWN. THIS CONDITION CAN BE CONTROLLED BY THE APPLICATION OF A CRANKCASE HEATER. A SUCTION
LINE ACCUMULATOR DOES NOTHING TO PREVENT LIQUID MIGRATION AND A CRANKCASE
HEATER DOES NOTHING TO PREVENT LIQUID FLOODBACK. EACH WITHOUT THE OTHER
IS HALF A JOB - BOTH TOGETHER PROVIDE BALANCED COMPRESSOR PROTECTION.

26

Notes

GENERAL CABINET
MAINTENANCE
AND REPAIRS

Using the following instructions you will be able to make cabinet
exterior repairs along with other general cabinet repairs.

28

TOP REMOVAL FOR TBB & TDD UNITS

TOP REMOVAL FOR TBB & TDD UNITS
Disconnect the power to the unit.
Locate and remove screws on the inside of the cabinet going through the evaporator housing and into the bottom of the counter top.
Locate and remove the screws securing the line set cover to the top located to the left of the evaporator housing.
Remove the two screws inside the door jamb going through the jamb into the bottom of the top. There will be
two screws in each door on multiple door units.
Cut the silicone seal that runs along both ends and along the back of the unit. Silicone seal is wrapped around
the front wall of multiple door units.
To remove top lift front up approximately 2-3 inches and push backward to unlock lip in back of top.
To reinstall top, carefully align the groove in the back with lip on cooler base. Slide forward, reinstall all
screws and re-silicone around cabinet edge.
Top

Evaporator
Housing Screws
3”
Evaporator Housing
Top Screws

29

TOP REMOVAL FOR TD & T-GC UNITS

TOP REMOVAL FOR TD & T-GC UNITS
1. Turn unit off and remove lids.
2. Remove screws along back of cabinet top.
3. Remove screws on each side, going through lid slide rails, inside cooler.
4. Remove screws along front of top under inside ledge, also remove the two screws holding center trunion
on units with more than one door.
5. Lift top to approximately 45 degrees while pushing top forward at same time. Top will lift off lip in front.
T-50-GC has heater wire looped through center trunion. Please becareful when removing top. Before
reinstalling, inspect heater wire to make sure it is not damaged.
6. To reinstall top, while holding top at 45 degree angle hook top on lip at front of cabinet and lay down while
pushing backwards on top, when laid completely down press firmly on top to provide a good seal.
7. Reinstall all screws along inside of cabinet and along back of top on outside of cabinet.
8. Reinstall doors and turn unit on.

Lid
Trunion

Top Screws

30

TPP COUNTERTOP REPLACEMENT INSTRUCTIONS
1.

Unscrew top door hinges from countertop and remove doors.

2.

Locate & remove 2-2 3/4 inch screws in the black plastic trim in the top of each door or top
drawer opening.

3.

Remove front louvered grill. Remove screw from L-bracket that connects countertop to cabinet.

4.

Remove screws from the following parts inside of cabinet.
A. Airduct, which extends from evaporator housing to far left end of cabinet. (After all screws are
removed lower duct into cabinet floor).
B. Fan area housing (after air duct is lowered, screws connecting this housing to the countertop will be
exposed, remove these screws)

5. Cut silicone seal that seals countertop to cabinet.
6. Lift up on front of countertop and push towards rear of cabinet. (Countertop slips into groove on rear of cabinet)
7. Clean all excess silicone from cabinet before reinstalling countertop.
8. To reinstall onto cabinet, sliding it to front of cabinet so it will catch in the lip on the rear of cabinet. Countertop
should be flush with the rear of the cabinet when installed correctly.
9. Reinstall screws through the top of the door openings. Holes in top should align with holes in frame
Reinstall all L-brackets.
10. Reinstall screws into interior parts, first the pan area housing and then the air duct.
11. Set cabinet upright and silicone seam between countertop and cabinet.
The following steps help to install the
new counter top.
1. Follow step #8 vut you will have to
pre-drill 5/28” holes to reinstall 2 3/4”
screws through the door/drawer opening.

Hood

Top

Air Duct Screws

2. Lay the cabinet on its back, place doors
into position. Mark holes for top
hinges. Pre-drill these holes with a
7/32” drill bit. Mount doors.

Top Screws
Evaporator

3. Remount doors making sure spacing
between doors is even.
To install new top change steps 7, 8, and
9 to steps 1, 2, & 3.

31

TOP REMOVAL FOR VARIOUS COOLERS
TSSU,TWT,TUC

1. Disconnect power from cabinet.
2. Remove door(s) by removing the screws securing upper hinge to the counter top, and pull top of door
towards you.
3. Locate & remove 2-2 3/4 inch screws in the black plastic trim in the top of each door or top drawer opening.
4. Cut silicone seal with razor knife on inside and outside of cabinet, break the silicone seal on both sides
and along the front edge with a putty knife.
5. Lift top upward two-three inches and push backwards, this will unhook top from lip in rear edge of cabinet.
6. To install top, apply a bead of black silicone to the top of the cabinet and, hook top on lip at rear of the
cabinet and pull forward, press down firmly on the top and install screws through cabinet into top.
7. Reinstall doors
To Install New Top
1. Lay cabinet on its back & align doors with edge of cabinet. Pay attention to proper spacing of door along
edge, it should be approximately 5/8". Place new silicone beads inside & out.
2. When installing a new top use 5/8" spacers at outer edge of the door and cabinet to locate door properly.
3. Push mounting plate on
KEIL hinge until parallel
with front of cabinet and
mark center of hinge holes.
Drill holes with #7 drill bit
or .201 Dia. Install door on
cabinet with black plastic
spacer between hinge
bracket and counter top
and run screws into new
holes and remove spacer
blocks.

Top

Top Screws
Evaporator Housing

32

TOP REMOVAL FOR TRCB 50 and 79
TRCB 50 and 79
1. Disconnect the power to the unit.
2. Remove drawers.
3. Remove condensing unit grill.
4. Locate & remove 2-2 3/4 inch screws in the black plastic trim in the top of each door or top drawer
opening (if necessary remove mullion).
5. Break silicone seal around countertop inside and out.
6. Lift front edge of counter top, about 10˚ to 15 ˚. Push countertop toward back of cabinet to detach counter
top from securing devise.
7. To install, reverse these procedures. Make sure to replace screws and apply silicone seal around edge of
counter top.

Top

Top Screws

36˚ F

Mullion

33

End Bar

INSTALLATION INSTRUCTION
END CAP REPLACEMENT - T-SERIES SWING DOOR
REQUIRED TOOLS
•
•
•
•
•
•
•
•
•

Phillips Head Screwdriver
1/4" Hex Head Driver
Putty Knife
Two-Way Tape
Rubber Mallet
.30 drill
Rivet Gun
Black Silicone (optional)
Silver/Gray Silicone Caulk (optional)

Gently lift grill and slide away from side
to receive replacement panel. Be careful
not to disconnect wiring to thermometer.

___________ STEP 9

___________

Carefully bend 1 3/4" rear lip inward
slightly in order to create an angle less
than 90° to produce a snug fit while
installing.
___________ STEP 10 ___________
Peel plastic film away from 1/2" front lip
only.

FIGURE 2.

___________ STEP 1

___________

Disconnect power to unit.
___________ STEP 2

___________

Carefully lay cabinet on its back using
2x4's etc. to cushion and elevate from the
floor.
___________ STEP 3

___________

___________ STEP 5

___________

If replacement is on the hinge side of the
cooler remove the door and hinges. (see
instruction on page 3).
___________ STEP 6

Install panel by working the top front
1/2" lip in slot between cabinet and plastic gasket base and continue down the
cabinet and under bottom grill frame.
It may be necessary to use a putty knife
to widen gap.

___________

Drill out rivet in stainless gasket base on
right side top with a .30 bit.
(no rivet on left side) and bottom.

Take off lower grill assembly by removing four front corner screws. Loosen (do
not remove) two screws in grill bracket
on the side to receive replacement panel.

FIGURE 4.

FIGURE 1.

When cap is in position gently tap folded edge with a rubber mallet until flush.

FIGURE 3.

___________ STEP 7

___________

Install 5 strips of two-way tape vertically the length of the side being capped.

___________ STEP 11 ___________
Tighten screws in bottom grill frame
___________ STEP 12 ___________

___________ STEP 8
___________ STEP 4

___________

Take off top grill assembly by removing
three screws along the rear edge on top,
two screws in the front underside and
single screw on right side into top hinge
bracket.

___________

Remove replacement panel from
masonite box. (replacement panel may
be used on either end) 1/2" lip faces
front.

34

Smooth replacement end over two sided
tape and around rear edge.
Remove protective film.

INSTALLATION INSTRUCTION
END CAP REPLACEMENT - T-SERIES SWING DOOR (continued)
___________ STEP 13 ___________
Drill pilot holes for rivets using .30 drill
bit. Four down the front edge, and three
across top and bottom edges (see figure 5).
___________ STEP 14 ___________
Install rivets.
Replace drilled out pop rivet in top right
side gasket base.
___________ STEP 15 ___________
FIGURE 5.

Carefully lift cabinet to upright position.
Drill 3 holes, one at top, one in middle,
one at the bottom. (see figure 6)
Install rivets.
___________ STEP 17 ___________
If necessary use black silicone to create a
good seal where front corner meets plastic gasket molding. Use silver/gray silicone caulk to seal rear raw edge.
___________ STEP 18 ___________
Reinstall doors and louvers.

FIGURE 6.

35

INSTALLATION INSTRUCTION
SIDE PANEL REPLACEMENT - GDM SERIES

REQUIRED TOOLS

____________ STEP 3 ____________

____________ STEP 6 ____________

•
•
•

Attach the other plastic extrusion to the
bottom side corner of the cabinet (see illustration). Drill and pop rivet every 6" to 8"
so that the extrusion remains straight.

Check to see that there is no gap under the
top and rear 3/4" wide flange.

____________ STEP 1 ____________

____________ STEP 4 ____________

Make sure that both sides of the cabinet are
free from dirt. Clean if necessary.

If the cabinet will be placed outdoors, the
back side of the 3/4" wide flange should be
silicone caulked to stop rain water from
getting behind the panel.

Drill and pop rivet the artwork panel to the
cabinet using the 3/4" wide flanges provided at the rear of the cabinet and the top.

1/8" drill
Rivet Tool
Silicone Caulk

____________ STEP 2 ____________
Attach the plastic extrusion to the front
side corner of the cabinet side (see illustration). Use a 1/8" drill bit to drill through
the extrusion and the cabinet. Use pop rivets provided to fasten extrusion. Drill and
pop rivet every 8" to 10" so that the extrusion remains straight.

____________ STEP 5 ____________
Position and place artwork panel against
cabinet so that the 3/4" wide flange is at
the top and rear of the cabinet. Slide
panel into the slots provided in the
plastic extrusions.

36

____________ STEP 7 ____________

____________ STEP 8 ____________
Wipe off excess silicone caulking when
sealing is completed.

INSTALLATION INSTRUCTION
SIDE PANEL REPLACEMENT - GDM-33C-PT

Figure 1.

The procedure listed below will enable you
to create a frame around the end panel and
will secure your new replacement panel.

REQUIRED TOOLS
• 1/2" drill
• Rivet tool
____________ STEP 1 ____________
Peel backing on two-way tape and attach
as indicated in figure 1. Apply tape in two
areas as shown. this will secure replacement panel when inserted into frame.

____________ STEP 2 ____________

____________ STEP 4 ____________

Peel backing away from two-way tape and
secure to black plastic extrusion. Peel
other side of tape and adhere extrusion to
panel in the three locations indicated.

Anchor all three plastic extrusions with
poprivets. (6 poprivets for the sides and
three for the top panel.)
____________ STEP 5 ____________

____________ STEP 3 ____________
For the two longest extrusions, drill six
holes. (1/2" deep), through both the extrusion and the cooler end panel. Drill three
holes into the top extrusion and into the
cooler top. Place at equal distance.

37

Slide replacement panel into newly created
frame and anchor bottom flange with three
poprivets.

INSTALLATION INSTRUCTION
FLORAL CASE BAFFLE INSTALLATION
The baffle is installed on floral cabinets to slow the velocity of the air down. This will make the flowers last
longer, because the pedals do not dry out as quickly.
1. Trim a small square out of top left side of baffle to accommodate the suction line.
2. Place baffle in place and install #6 x 1/2 screws into 1/2” lip of the baffle and top of cabinet.
3. Install #6 x 1/2 screws into 1/2” lip and evaporator cover being careful not to puncture evaporator drain pan.

Baffle

Evaporator
Housing

38

INSTALLATION INSTRUCTION
GDM-23FC Mirror Retrofit Kit
REQUIRED TOOLS
• 1/16" Drill
• 1/8" - 1/4" Shim (2)
• Socket wrench
____________ STEP 1 ____________
Remove all products and shelving from
interior of cabinet.
____________ STEP 2 ____________
Disconnect power to the unit.
____________ STEP 3 ____________
Wipe interior of cooler with a clean dry
cloth to remove dirt and moisture.
Surface must
be clean and
dry for adhesive on extrusions (mirror
support strips).
5/16”

____________ STEP 4 ____________
Measure 15/16" from rear interior wall forward and mark the side wall for the mirror
support strip location. Select two shims of
equal height between 1/8" - 1/4 (one for
each side of the cabinet). Measure and
mark the height of the shim against the
side wall. Repeat on the opposite wall (see
figure 1 & 3).

Repeat on the opposite wall (adhesive
backing is the only anchor for the mirror
supports.

WARNING
Do not over tighten screw to avoid
cracking mirror.

____________ STEP 7 ____________

____________ STEP 12 ____________

Place shims on the interior floor in line to
support the mirror when in position.

Remove shims, replace shelving and
reconnect power to cabinet.

____________ STEP 8 ____________
Slip one edge of the mirror in the mirror
support strip channel, bow mirror and
feed into the other mirror support strip.
Work until mirror fits flat inside support
strips and rests on top of the floor shims
(see figure 2).

Figure 3.

____________ STEP 9 ____________
Locate left edge of
the drain line
cover at the rear of
the cabinet. At the
top edge of the
mirror measure in
1" and down 2".
Mark center point.
Figure 1.
At the bottom
edge of the mirror measure in 1" from the
drain line cover and up 2" from the bottom
edge of the mirror. Mark center point. (see
figure 3).

drain line cover

1
2

NOTE
If the drain line cover edge at the tank
bottom is difficult to locate measure the
distance from the side wall to the center
point at the top of the mirror and use that
measurement for the bottom center point.
____________ STEP 10 ____________

____________ STEP 5 ____________
Locate two channel extrusions
(mirror support strips).
Remove paper strip covering adhesive from one
of the mirror support
strips.

shims

______ STEP 11 _____
Fasten 10-16 x 1/2 hex
knurled head screw
(included) in both
pilot
holes
snug
against mirror.

____ STEP 6 _____
Carefully secure mirror support strip
against the side wall
the height of the shim
mark and along the mark
15/16" from the back wall.

Drill pilot holes at both center points
with a 1/16" drill bit through the
mirror and drain line cover.

Figure 2.

39

2

1

INSTALLATION INSTRUCTION
TWT,TUC,TSSU, and TPP PERIMETER HEATER REPLACEMENT

POP RIVET
VIEW

REQUIRED TOOLS

___________ STEP 5 ___________

___________ STEP 10 ___________

•
•
•
•

Drill out pop-rivet in the bottom right
corner and move vertical stainless
strip up.

Reinstall heater in the same manner.
(The splice in the heater wire is to be
just below the plastic trim inside the
acrylic tubing). Any section of the
heater wire can not be inside of
acrylic tubing.

Phillips Head Screwdriver
Pop Rivet Tool
Drill
#30 Drill Bit

___________ STEP 6 ___________
___________ STEP 1 ___________
Disconnect power cord, unload contents
of cabinet and lay cabinet on its back.

Lift plastic trim and slide bottom stainless strip out.
___________ STEP 7 ___________

___________ STEP 2 ___________
Remove doors by removing upper door
hinges.

Remove bottom 3 screws on each side
of mullion, remove stainless steel strip
by lifting plastic trim and slide out the
bottom.

___________ STEP 3 ___________
Drill out pop-rivet in the top right hand
corner.
___________ STEP 4 ___________
Lift plastic trim and slide upper stainless strip out.

___________ STEP 11 ___________
Insert heater wire through acrylic tubing in to the cabinet and reconnect with
wire nuts.
___________ STEP 12 ___________

___________ STEP 8 ___________

Reinstall the stainless steel plates and
pop-rivet corners.

Remove evaporator cover to access
wiring connection of the heater wires.

___________ STEP 13 ___________

___________ STEP 9 ___________

Stand unit upright and let stand 2 to 4
hours before plugging it in.

Disconnect wires and remove defective
heater(s) from cabinet (pay close attention to how wiring is attached around
the perimeter and the mullion(s)).

40

INSTALLATION INSTRUCTION
GDM AND T-SERIES FREEZER PERIMETER HEATER WIRE REPLACEMENT

REQUIRED TOOLS
• Phillips Head Screwdriver
• Drill
• 1/8" Drill Bit

of the plastic trim where the pop
rivet was removed so that the stainless trim slides beneath it. Drill out
the two pop rivets in the top plastic
trim which was hidden by the horizontal piece of stainless trim.

__________ STEP 9 __________
Replace inoperative heater wire loop,
being sure to hook under the corners
of the plastic trim as observed during
disassembly.

__________ STEP 1 __________
__________ STEP 6 __________
Disconnect the power supply,
unload contents of cabinet and lay Remove left and right vertical
stainless steel trim pieces by sliding
cabinet on its back.
them out of the plastic trim. Be
__________ STEP 2 __________ sure to raise the top horizontal plastic trim piece so that the stainless
Remove the lower louvered grill. trim passes underneath it toward
Remove the stainless steel skirt the top of the cabinet.
around the louvered grill.
__________ STEP 7 __________
__________ STEP 3 __________
Drill out the pop rivet that was hidRemove the sign on the louver sec- den by the stainless steel trim in the
lower right corner of the vertical
tion above the door (s).
__________ STEP 4 __________ plastic piece so that the lower vertical stainless trim slides beneath it
for removal.
Remove hinges and door (s).
__________ STEP 5 __________

__________ STEP 8 __________

Drill out pop rivet on right top corner of plastic and stainless steel
mullion trim. Remove the top horizontal stainless steel strip by sliding
it to the right of the tracks in the
plastic. Be sure to raise the corner

Disconnect heater wires in the junction box. Remove heater wire loop
by unhooking at the corners where
it is retained by the plastic trim
pieces.

41

__________STEP 10 __________
Reverse assembly sequence to
replace trim. Use the four (4) small
sheet metal screws furnished with
the heater wire in the same
sequence as the pop rivets were
removed.
__________ STEP 11 __________
Attach the heater wires to the power
supply in junction box. Replace all
other assemblies in reverse
sequence in which they were
removed.

TD-SERIES AND GLASS CHILLERS

TD-Series and Glass Chillers
Replacement of Lid Rails, Lid
Rail Trunions and Lid Gaskets
Tools Required
- 1/4” Nut Driver
- Pop Rivet Gun
- Drill motor
- Phillips Head Screwdriver
- Utility Knife
- Duct Tape
- #29 Drill Bit
Note:
For easier installation of new
lid rails and lid trunions,
it’s best to remove the top
from the cabinet.
Note:
When changing out lid rails or
lid trunions on a T-50-GC, the
trunion has a mullion heater
looped through it.

nized air deflector. This will aluminum rivets (2 each) in each
expose the hidden screws hold- lid rail cover.
ing trunions and lid rails to top
and any tape on the back side of
Note:
the lid rails. This will need to be Be sure to use only aluminum
cut or removed.
rivets as steel may rust.
_________ STEP 4 _________
Remove old lid rails and lid
trunions. Note how the lid rails
have a slot in the top edge which
slides into the inside edge of the
stainless steel top. Once you
have new lid rails in place, you
will need to re-tape to secure
them until top is re-installed on
cabinet. Install new lid trunions
and any lid gaskets that may
need replacing.
_________ STEP 5 _________
Re-install air deflector to top.
_________ STEP 6 _________

_________ STEP 1 _________ Re-install top to cabinet (See Top
Removal instructions for proceDisconnect electrical power to
dure).
cabinet.
_________ STEP 7 _________
_________ STEP 2 _________
Once top has been installed, you
Remove top from cabinet (See will need to install the new lid
Top Removal instructions for TD rail covers. These will insert into
& T-GC on page 30).
the lid rails (sides only) and
trunions. You will need to use
_________ STEP 3 _________
your drill motor and a #29 drill
Once top is removed, turn top bit, drill 2 holes about 12” apart
upside down and remove galva- in each lid rail to install the 1/8”
42

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL REPLACEMENT
(For Cabinets With Larger Than 1/3 H.P. Compressors)
STEP 2

WARNING:
Failure to disconnect power to
the unit may result in
electrocution to field personnel.

Qualified Repair Personnel:
These repairs should be performed
by a qualified service technician.

•
•
•
•
•
•
•
•
•
•

Required Tools:
Phillips-head Bit
1/4” Nut Driver Bit
Wire Cutters
Drill
Needle-Nose Pliers
Wire Strippers
Crimping Tool
Voltmeter
Plastic Mallet or Hammer
Slotted Screw Driver

Contents of Relay Kit:
• Relay (and mounting screws)
• Relay Shield (and mounting screws)
• (4) Relay wires: 2 blacks, 1 pink,
1 white with insulated female spade
connectors on one end.
• Grommet
• (4) Sta-con connectors
• New temperature control
• Instructions

(Slide Door)
Remove Louvered Grill:

(Swing Door)
Remove Louvered Grill:

A. To remove grill, loosen upper
screw on each end of grill and
remove lower screws. Gently swing
grill forward and up.

A. Remove screws as indicated by
arrows.

Figure 1. Removing louvered grill
(slide door model)

Figure 1A. Removing louvered grill
(swing door model)

STEP 3
Accessing Wire Connections:
A. Remove ballast box cover by backing out two hex head screws.
(See Figure 2).
NOTE: Wiring diagram is positioned on inside cover.

___________ STEP 1 ___________
Removing Power:
A. Disconnect power to the unit.

Figure 2. Removing ballast box cover

43

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL REPLACEMENT CONTINUED.......
___________ STEP 4 ___________
Relay Connection Mounting:
A. With slotted screw driver and
plastic mallet or hammer, drive out
knock out positioned on left side of
ballast box. (See Figure 3).

Figure 3. Driving out knockout

B. Install the supplied grommet*
into the knockout hole. (See Figure 4).

*Grommet

Figure 4. Installing the grommet
C. Mount relay to underside of
unit on the left side of ballast box,
and 3/4” back from the front edge
of the underside.
NOTE: Mount relay next to the
ballast box, so that when the relay
shield is installed it covers the relay
and all exposed wiring.
Relay should be anchored with two
self-tapping screws, (supplied in kit),
as pictured in Figure 5.
Figure 5. Anchoring relay

44

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL REPLACEMENT CONTINUED.......
___________ STEP 5 ___________
coil contacts

Relay Temperature Control Wiring:
A. Connect the wires included in kit
to the relay as follows:
1. Connect one black wire to one
of the normally opencontacts of the
relay.
2. Connect the other black wire
to the other normally open contact on
the relay.
3. Connect the pink wire to one
side of the relay coil.
4. Connect the white wire to the
other side of the relay coil.
NOTE: Each relay has a wiring
diagram on the side of it.
(See Figure 6).

pink

white
Coil
black

black

Normally open contacts

Figure 6. Relay Wiring Diagram

B. Feed wires into the ballast box
through the knockout.(See Figure 7).
C. Using the Sta-Con connectors in
the relay kit, make the following connections inside the ballast box:
1. Locate the pink wire coming
from the temperature control and
connecting to the black compressor
receptacle wire. Cut this connection
and connect this pink wire from the
temp control to the pink wire going to
the relay.
2. Connect one black wire on
relay to the black wire cut from the
compressor receptacle.

3. Connect the white wire coming from the relay to the white wire
bundle that is connected to the white
on the main power cord.

4. Connect one black wire to
the black wire bundle that is connected to the outgoing terminal on the
main power switch located on the
ballast box.

Figure 7. Routing relay wires

45

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL REPLACEMENT CONTINUED.......
___________ STEP 6 ___________
Replace existing temperature control
with new Danfoss control in repair kit:
(See Figure 8).
A. Connect one pink wire from old
control to double terminal #4 on
new temperature control.
B. Place the plastic-coated spade
clip on secondary #4 terminal.
C. Connect other pink wire from old
control to terminal #3 on new
Danfoss temperature control.
(See Figure 8 & 9).

___________ STEP 7 ___________

Figure 8. Temperature Control Leads

Anchor the Relay Shield:
(See Figure 10).
A. Secure the new relay by
attaching the relay shield.
B. Relay shield includes two selftapping screws. When installing
shield, place shield in position to
cover relay and all exposed wiring.

Figure 10. Anchoring Relay Shield

46

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL REPLACEMENT CONTINUED.......

___________ STEP 8 ___________

___________ STEP 10 ___________

Unplug the cooler

Replacing Louvered Grill:

___________ STEP 9 ___________

A. Reinstall grill by reversing earlier
procedure.

Checking Relay Operation:

___________ STEP 11 ___________

A. Unplug the condensing unit from
the compressor receptacle ( located
on the ballast box).

Re-connect Power Cord.

B. Turn the new control to the “0”,
(zero), position by aligning the zero
indication on control knob with the
arrow stamped into the evaporator
housing. Ensure that control is off
by listening for an audible click.
This will indicate an off position.

___________ STEP 12 ___________
Return Temp Control to normal
setting, and check cabinet
operation.

C. Plug voltmeter into compressor
receptacle.
D. Plug cabinet into power source.
Securing Ballast Box:
A. Reinstall ballast box cover.
B. Anchor cover with two screws.
F. Check voltage at compressor
receptacle. Voltage should equal
voltage at wall outlet.
G. If voltage is correct, turn temperature control to “0”, (zero).
H. Plug condensing unit cord back
into the compressor receptacle.

47

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL CHANGE-OUT - GDM

Permagum

_________ STEP 7 ___________
Reach to the side of the evaporator
coil and remove the permagum from
around the control bulb. Completely
remove the control bulb from the
sleeve, and pull straight out after
removing the permagum.

1

Figure 1.
Temperature
Control

2

Danfoss Temperature
Control Change Out.

REQUIRED TOOLS
• Phillips Head Screwdriver
• Hex Head Driver
___________ STEP 1 ___________
Unplug the cooler
___________ STEP 2 ___________
Turn the temperature control to the
"OFF" position ("0").
___________ STEP 3 ___________
Remove the black control knob on the
temperature control. (It pulls off.)

3
B

A

A

B

Figure 9.

___________ STEP 4 ___________
Remove the screws that secure the
mounting plate to the evaporator top.
Item "A".

NOTE:
If it becomes necessary to remove the
housing be sure to tape off any interior
panel at risk of being scratched.

___________ STEP 5 ___________

___________ STEP 6 ___________
Disconnect the two wires from the temperature control. Items 1 and 2.

Remove the two screws that hold the
control to the mounting plate. Item"B".

4

48

Connect one wire to terminal #3
and the other wire to terminal #4.
Note: Spare terminal #4 should be
covered with insulated female
connector sent with new control.

INSTALLATION INSTRUCTION
TEMPERATURE CONTROL CHANGE-OUT - GDM AND T-SERIES

Installing The New Control

Figure 2.
REQUIRED TOOLS

Control
Bulb

• Permagum
• Phillips Head Screwdriver
• Hex Head Driver

Copper
Sleeve

____________ STEP 1 ____________
Insert the control bulb into the copper
sleeve. Before insertion, be sure there are
no kinks in line. (figure 2)

Permagum

____________ STEP 2 ____________
IMPORTANT!
Seal the end of the sleeve with permagum
to keep moisture out. (figure 3)

Figure 3.

____________ STEP 3 ____________

____________ STEP 6 ____________

Connect the two wires to the new temperature control.

Replace black control knob and turn the
control to the #5 setting.

____________ STEP 4 ____________

____________ STEP 7 ____________

Fasten the control onto the mounting plate
with two screws. Item A.

Plug the Cooler in.

____________ STEP 5 ____________
Fasten the mounting plate to the cooler
with two screws. Item B.

NOTE:
If it becomes necessary to remove the
housing be sure to tape off any interior
panel at risk of being scratched.
CAUTION
Wait at least 12 hours before
re-adjusting control. This allows the
Cooler to stabilize cycle.

49

INSTALLATION INSTRUCTION
Replacing Temperature Controls in GDM-7, GDM-10, and GDM-12 Models

F
r
o
n
t
o
f
C
o
o
l
e
r

Standard
Copper
Sleeve

New Copper
Sleeve Extension
Permagum
Temperature
Control

Evaporator

___________ STEP 1 ___________

___________ STEP 6 ___________

___________ STEP 9 ___________

Unplug Cooler and turn temperature
control to “off” (0˚) position.

Reach in to the side of the evaporator
coil and remove the permagum from
around the control bulb. Then remove
the old thermostat control bulb from
the sleeve completely.

Gently push the control bulb through
the joined sleeves in 1-2 inch increments until it reaches the end inside
the evaporator, taking care not to kink
the line.

___________ STEP 7 ___________

___________ STEP 10 ___________

Insert the new thermostat control bulb
into the new copper sleeve extension until about 1/2 inch protrudes
from the swaged end. Using a low
temperature lubricant on the control
bulb is advisable.

Seal both ends of the new control
sleeve with permagum to keep moisture out.

___________ STEP 2 ___________
Pull off the black control knob from
the control.

___________ STEP 3 ___________
Remove the mounting plate from the
evaporator housing.

___________ STEP 4 ___________
Remove the temperature control from
the plate and disconnect the 2 wires.

___________ STEP 5 ___________
Remove the lamp from the front of the
cooler and remove the front panel.

___________ STEP 8 ___________
Using the protruding end of the control bulb as a guide, insert it into the
copper sleeve (elbow) in the rear of
the evaporator. Then push the sleeve
extension over the end of the elbow to
lock the two
tubes together.

___________ STEP 11 ___________
Remove the mounting plate from the
evaporator housing.Connect the 2
wires to the new control, the control to
the mounting plate, the plate to the
cooler, and replace the control knob.

___________ STEP 12 ___________
Turn the control knob to the #5 setting.

___________ STEP 13 ___________

50

Reassemble front of cooler and plug it
in.

INSTALLATION INSTRUCTION
SURGE PROTECTOR’S FOR THE GDM-SERIES
SURGE PROTECTOR
INSTALLATION
This instruction is True's recommended
procedure for installing surge protection part no. VD S16P.

BALLAST BOX ACCESS
____________ STEP 3 ____________

____________ STEP 5 ____________
Remove ballast box cover by un-screwing
two 1/4" hexhead screws, center-positioned on both sides of cover plate. See
Figure 1, #3.
KNOCKOUT LOCATION AND
BUSHING INSTALLATION

REMOVING POWER
____________ STEP 1 ____________

CREATING WIRE CONNECTION FOR
SURGE PROTECTOR

____________ STEP 4 ____________
Locate 5/8"knockout positioned on the
inside, upper left, of ballast box. Figure 1,
# 4.

NOTE
Installer will need to provide #16
wiring for splicing.
From this installer supplied wiring, cut
two, pink , 15" pieces and strip both ends
1/2" from ends. On one end of each wire,
crimp on a 1/4" , quick-connect, insulated,
slip-on connector.

Disconnect power before installing surge
protector.
REQUIRED TOOLS
• Multimeter
• Adjustable Wrench
• Phillips Screwdriver
• Wire Strippers
• Wire Cutters
• Crimper

4
7

1
6

2
3

Figure 1
5

LOCATING POWER CORD WIRING
FOR CUTTING
LOUVERED GRILL REMOVAL
____________ STEP 2 ____________
Remove louvered grill by removing the
four phillips-head screws as shown in
Figure 1, # 2.

Tap out 5/8" knockout with a screw driver
and hammer. See Fig 1. # 4. If available,
install a 5/8" snap bushing in knockout
hole.

51

____________ STEP 6 ____________
The power cord wiring is routed through
the middle knockout in the cluster of three
knockouts in the upper inside of the ballast
box. See Figure 1, #6.

INSTALLATION INSTRUCTION
SURGE PROTECTOR’S FOR THE GDM-SERIES ...Continued
LOCATING POWER CORD
WIRING FOR CUTTING (cont.)
____________ ...STEP 6 ____________
Locate the junction of tan, pink and black
wires coming from power cord area. See
figure 1 and Figure 2. If cabinet is supplied with a European style cord, the
power cord, black, wire will be brown.
At this junction, cut the pink wire several
inches from the junction. Strip each end of
wire 1/2". See figure 2.
ATTACHING THE SURGE
PROTECTOR TO THE BALLAST BOX
____________ STEP 7 ____________
Position the surge protector on left side of
ballast box toward back edge. Allow for
cover clearance. See Figure 1. # 7

c. Next, locate other loose pink wire in
ballast box, connect the remaining
pink wire with in-line splice or butt
connector.
d. On surge protector, connect other end
of pink wire to "LINE OUT".
e. Now create a 15" long white wire.
Strip both ends 1/2". On one end put
1/4" quick-connect insulated slip on
connector.
f. Locate junction of white wires in ballast box. (if cabinet is supplied with a
European style cord, this wire will be
blue.)
g. Cut end connector off junction, restrip wires and add white wire. Recrimp the connection using a large
closed-end connector.
h. On surge protector, connect other end
of white wire to "NEUTRAL".

____________ STEP 9 ____________
a. Neatly replace wires into ballast box
and replace lid.
b. Plug in cabinet. Green light on surge
protector should be "off".
c. Cabinet now has power. There will
be a 3 minute delay before the pump
will start.
d. Test voltage.
d. After start-up delay, cabinet should
operate normally.
e. Replace louvered grill cover and
secure with four phillips-head screws.

ENCLOSING WIRING AND UNIT
START-UP

Using self-drilling screws, attach the surge
protector on the ballast box,
as illustrated in Figure 1, step # 7.

PINK
TAN

WHITE
PINK

NOTE
For GDM-23 mount surge protector
below flooring.

TAN
WHITE

BROWN

PINK

PINK
PINK

BLACK
WHITE

RECEPTACLE
PINK

BLUE

WHITE

BROWN
NEUTRAL
BLACK

SPLICING INTERCONNECTING
WIRING TO SURGE PROTECTOR

GREEN
LIGHT

PINK

LIVE
OUT

RECEPTACLE
WHITE

BLUE

WHITE

LIVE
IN

SURGE PROTECTOR

____________ STEP 8 ____________
a. Route all interconnecting wires
through newly created knockout hole.
See Figure 2.
b. Take one pre-cut 15" pink wire, and
locating pink wire still connected to
wire junction , connect these together
with an in-line splice or butt splice.
On surge protector, connect another
end of pink wire to "LINE IN",
(marked on surge protector).

Figure 2
Ballast Box Before Surge Protector

Figure 3
Ballast Box Before Surge Protector

NOTE
Check all wiring to make sure it is correct. Connections should be verified against Figures 3 and 4.

52

Notes

DOOR AND LOCK
REPAIR

In this section you will find instructions on how to replace or repair door
assemblies, along with how to field install locks on cabinets.

54

INSTALLATION INSTRUCTION
GLASS INSERT - SLIDE DOOR

GDM-45

REQUIRED TOOLS

___________ STEP 7 ___________
___________ STEP 4 ___________

• Phillips Head Screwdriver
• 3⁄8" Wide Double-Sided Tape

Remove the screws that secure the four
glass insert holders to the door.
Remove all four aluminum pieces.

___________ STEP 1 ___________
___________ STEP 5 ___________
Slide left door (door positioned on outside track) to the right. Lift door up
and pull out at the bottom. Right door
(door positioned on inside track) can
be removed in the same manner.
___________ STEP 2 ___________
Remove the nylon cord from the top of
the door.
___________ STEP 3 ___________
Set the door (handle side down) on a
flat surface.

Beginning at the corners carefully pry
the broken glass loose from the frame.
If necessary use heat gun or hair dryer
aimed in the space between glass insert
and door frame to lessen adhesion of
double-sided tape. Carefully dispose
of the damaged glass.
___________ STEP 6 ___________
Remove any excess tape or glass from
the lip on the door frame. Replace with
new double-sided tape on the 1⁄2" lip.

55

Remembering to keep the tempered
glass to the handle side of the frame
place the new glass insert inside the
frame and press against the two-way
tape. (The etched TRUE logo is positioned on the tempered glass side.)
___________ STEP 8 ___________
Replace the four Aluminum glass
insert holders.
___________ STEP 9 ___________
Reconnect the nylon cord to the top of
the door and replace the door as originally removed.

INSTALLATION INSTRUCTION
Slide Door Instruction - To improve slide door closing
Check the cooler to see that it is level
before searching for a solution. Place
a level on the center of the lower channel and on the v-track in several
places. The different areas involved
with the closing of the door are as follows...
_______ Plastic Channel _________
The plastic channel area: This includes
the top, bottom, v-track, and bumpers.
a. Inspect the top and bottom channels for blockage. Inspect the vtrack for dents or movements that
may be causing the door to bind.
The v-track may be adjusted
slightly by bending the "v" with a
number 8r vise grips. The v-track
can be realigned or replaced.
Shims under the door can be
adjusted or added to, to improve
the seal and speed of closing of
the door.
___________ Door ____________
The door: This area includes v-roller
bracket assembly, stainless insert holder, slot on top of door (where cord is
fastened) the foam tape on the door,
and the plastic buttons on the inside of
the door.
a. Inspect the v-rollers, clean,
realign, and lubricate (the rollers
should spin freely) or replace.
Be sure the roller bracket screws
do not touch the v-track.

placing shims between frame and
glass insert, and then reinstall the
insert holders.
c. Replace the door (with door disconnected) from cord. Slide the
door in both directions. Look for
binding in the channel area at the
top and bottom. Check the stainless insert holder, the 1/4" - 3/8"
foam tape, the nylon buttons,
and the gasket. Adjust or replace
the v-track to ease any binding.
__________ Door Weights ________
The door weight area: This area
includes the weight, the nylon cord, the
assembly for holding the door open, and
the copper guides for the nylon cord.

___________ Gasket ____________
The gasket area: This area includes the
3" plastic, 1 3/8 plastic, the gasket and
the 11/16" gasket insert holder. Inspect
the door to make sure it is seating
against gasket.

TO ELIMINATE GAPS ON
SLIDE DOOR COOLERS
1. Adjust leg levelers to eliminate gap.
2. Place shims between the roller
brackets and the door.
3. Remove gasket and shim needed
locations.
4. Shim v-track.

a. Remove the door and disconnect
the cord. Pull the cord and
release it gradually. Does the
weight feel like it is binding?
Remove the knot in the weight.
Remove any excess cord at the
knot. The knot should be inside
the weight to minimize the friction. Is the weight dropping in
the middle of the cover or to the
front of the cabinet? The weight
dropping in the middle of the
cover or to the front of the cabinet? The weight should hang in a
vertical position (no angle).
Inspect the weight itself and the
holes in it. Replace the weight if
holes are to far off center and are
effecting the travel in the door
weight area.

b. Check to make sure door is
square. If not loosen stainless
insert holders then retighten insert
holders. Push on glass insert and
break the seal between insert and
2 sided tape. Square the door by

56

INSTALLATION INSTRUCTION
Wiper Gasket Installation
__________ STEP 1 __________
Before removing the doors from the
cabinet, mark each door in the area
where the wiper gasket will be
applied at the point of the center leg
on the top and bottom door channels.
See #1. Use the reference marks for
the vertical positioning of the wiper
gasket.

REQUIRED TOOLS
• Drill
• 1/8” Drill Bit
• Pop Rivet (2 Per Door)

1

__________ STEP 2 __________
Remove the doors by lifting the left
door up and swing the bottom out.
Remove the door cord attached to the
top of the door. Repeat these steps
for right door. Place the left door
with the handle down and place the
right door with the handle up.
__________ STEP 3 __________
Drill out the rivets that secure the
wiper Gasket and remove all residues
from the door surface where the
wiper gasket will be applied.
__________ STEP 4 __________
Peal off the adhesive tape on the back
side of the gasket and apply one
wiper gasket to the back of the outside (left) door. Position the wiper
gasket at least 3/8” in from the door
frame on the inside (right) door.

Top View of Wiper Gasket.

__________ STEP 5 __________
Drill one 1/8” hole through the top
and Bottom of the wiper gasket holder and in to the door frame about _”
from the top of the blade and replace
the pop rivets.

1

The short side of the gasket is
what seals between the doors.

SHOULD YOU HAVE ANYADDITIONAL QUESTIONS, PLEASE FEEL
FREE TO CONTACT THE TECHNICAL SERVICE DEPARTMENT.

57

__________ STEP 6 __________
On coolers with 3 doors, locate and
adjust the blade to the back frame
in the center door as needed making
sure that the right door will operate
freely and secure it with pop rivets.
Make sure that the wiper gasket
does not drag against the door tracks.

INSTALLATION INSTRUCTION
Removal and Installation of GDM &
Old Style T-Series - Swing Door

\

Figure 1

___________ STEP 5 ___________

For models with the integrated door
light feature, unplug light from ballast
box.

Remove Door Stop Pin by placing a
drift punch or 1/8" drill bit into the stop
pin hole two holes to the left (for right
side door) of the stop pin position.
With drill bit firmly anchored in position, apply back pressure to the left and
remove the stop pin with a needlenosed pliers. While firmly holding the
drill bit with your left hand begin rotating the hinge shaft to the right relieving spring tension. Insert second drift
punch or drill bit into hole to the left
and repeat process until all spring tension is relieved.

IMPORTANT:
Freezer doors have heater wires
which must be unplugged before
doors can be removed.

In some instances it is necessary to
relieve spring pressure one hole position at a time until spring pressure is
relieved.

___________ STEP 2 ___________

___________ STEP 4 ___________

Remove the four mounting screws
from louvered grill and remove grill.

Locate the top hinge assembly.

NOTE
Operation is reversed
for left side door.

REQUIRED TOOLS
• Two Drift Punches
(or two 1⁄8" drill bits)
• Needle-Nose Pliers
• Phillips Head Screwdriver
• Slotted Screwdriver
NOTE:
For greater safety and ease of
installation it is recommended
that two people assist in
replacement procedure.
___________ STEP 1 ___________
Turn the cooler off.

___________ STEP 3 ___________

58

INSTALLATION INSTRUCTION
REMOVAL AND INSTALLATION OF A GDM-SWING DOOR ...Continued
NOTE:
If cabinet is equipped with
integrated door light be sure to
unplug from ballast box.
NOTE:
Freezer doors have heater wires
which must be unplugged before
doors can be removed.
___________ STEP 6 ___________
In a squatted position, rest the bottom
of the open door on your left knee (for
right side door) as you face the outside
of the door. Create an upward pressure
and remove the two 3/8" bolts from the
bottom hinge assembly. Remove the
bottom hinge assembly. (Figure 2)

Glass Door Replacement
Instruction

REQUIRED TOOLS
• Phillips Head Screwdriver
• Two Drift Punches
(or two 1/8” drill bits)
NOTE:
It may be necessary to verify stop
pin location and door block material
for some models. Or call 800-3256152 for assistance

___________ STEP 5 ___________
Adjust the spring by rotating the door
hinge shaft to the left (using two drift
punches or 1/8” drill bits) hole by hole to
the desired tension (approximately onehalf turn). Replace the stop pin in the door
hinge shaft.
NOTE:
If cabinet is equipped with
integrated door light, be sure to
plug into ballast box.

___________ STEP 1 ___________
Beginning with the top hinge assembly
of the replacement door place the hinge
washer over the hinge shaft and slide
into top aluminum door block.
(figure 1)

___________ STEP 7 ___________

NOTE:
The slot at the base of the hinge
shaft must seat over the head of the
door hinge spring.

Carefully place door on a flat surface.

___________ STEP 2 ___________

NOTE:
Freezer doors have heater
wires which must be plugged
in before operation.

Insert the bottom hinge assembly
(hinge bracket, hinge washer, thrust
bearing) into aluminum door block and
brass bushing inside bottom frame.
(figure 1)
___________ STEP 3 ___________
While holding bottom hinge in place
lift door and slide top door hinge
together. Maintain vertical pressure by
resting door bottom on your knee
while squatting, or have someone
assist in order to re-attach lower hinge
to cabinet. Fasten hinge with 3/8”
bolts and washers.
___________ STEP 4 ___________

Figure 2

Replace the louvered grill on the cooler with the four screws

59

To adjust door hang Loosen bolts from bottom hinge
assembly and lightly tap with plastic
or rubber hammer.
When door hangs true,
tighten bolts.

INSTALLATION INSTRUCTION
TORSION SPRING REPLACEMENT New Style T-Series & GDM
Radius Front- SWING DOOR
NOTE:
If the torsion spring is broken,
there is no need for steps 1-4.

Top
Door
Hinge
Bracket

Door
Hinge
Shaft

Nylon
Door
Block

Door
Stop
Pin
Hinge
Washer
Brass
Bushing

Door
Hinge
Spring

Figure 1

Nylon
Door
Block
Brass
Bushing

REQUIRED TOOLS
•
•
•
•
•

Drift Punch (or 1⁄8" drill bit)
Needle-Nose Pliers
Phillips-Head Screwdriver
Slot-Head Screwdriver
Wrench (3⁄8")

___________ STEP 1 ___________

Thrust
Bearing
Hinge
Washer

Bottom
Door
Hinge
Bracket

Turn the cooler off.
___________ STEP 2 ___________

___________ STEP 4 ___________

Locate the top hinge assembly.

With drill bit firmly anchored in position, apply back pressure to the left and
remove the stop pin with needle-nosed
pliers. While firmly holding the drill bit
with your left hand begin rotating the
hinge shaft to the right relieving spring
tension. Insert second drift punch or
drill bit into hole to the left and repeat

___________ STEP 3 ___________
If spring remains taut, relieve tension
by placing a drift punch or 1/8" drill bit
into the stop pin hole, two holes to the
left (for right side door) of the stop pin
position.

60

process until all spring tension is
relieved.
In some instances it is necessary to
relieve spring pressure one hole position at a time until spring pressure is
relieved.
NOTE:
Operation is reversed for
left side door.

INSTALLATION INSTRUCTION
TORSION SPRING REPLACEMENT - SWING DOOR ...Continued
___________ STEP 5 ___________

___________ STEP 8 ___________

___________ STEP 13 ___________

Remove all 4 anchor screws from louvered grill and remove grill.

Remove upper and lower brass bushing from from the top and bottom of
door with a slotted screwdriver or needle-nosed pliers if, required.

While holding bottom hinge in place
lift door and slide top door hinge
together. Maintain vertical pressure by
resting door bottom on your knee
while squatting, or have someone
assist in order to re-attach lower hinge
to cabinet. Fasten hinge with 3/8"
bolts and washers.

NOTE:
If cabinet is equipped with
integrated door light be sure to
unplug from ballast box.
NOTE:
Freezer doors have heater wires
which must be unplugged before
doors can be removed.
___________ STEP 6 ___________
In a squatted position rest the bottom
of the open door on your left knee (for
right side door) as you face the outside
of the door. Create an upward pressure
and remove the two 3/8" bolts from the
bottom hinge assembly. Remove the
bottom hinge assembly. (figure 2)
___________ STEP 7 ___________
Remove the door and carefully place
door on a flat surface.

NOTE:
It may be necessary to verify stop pin
location and door block material
for some models.
Or call 800-325-6152.
__________ STEP 9 ___________
Using a needle-nosed pliers, remove
the broken torsion spring from the bottom of the door.
___________ STEP 10 ___________
Insert the new spring from the top of
the door ensuring that the end hooks
into the cross in the bottom door block.
The gap in the hook should be wide
enough to snugly fit.
___________ STEP 11 ___________
Assemble top hinge.
Place the hinge washer over the door
hinge shaft, slide into brass bushing
and fit into aluminum door block. (figure 1)
NOTE:
The slot at the base of the hinge
shaft must seat over the head of the
door hinge spring.
___________ STEP 12 ___________

Figure 2

Assemble bottom hinge.
Place the hinge washer over the bottom
hinge bracket, replace the thrust bearing over the washer, slide this assembly into the brass bushing and fit into
aluminum door bracket.

61

___________ STEP 14 ___________
Adjust the spring tension by turning
counter-clockwise (right door) to the
desired tension (approx. 1/2 turn).
Again use a 1/8" drill or drift punch to
adjust and replace stop pin.
NOTE:
If cabinet is equipped with
integrated door light be sure to
plug into ballast box.
NOTE:
Freezer doors have heater
wires which must be plugged
in before operation.
___________ STEP 15 ___________
Replace louvered grill and secure with
four screws.

To adjust door hang Loosen bolts from bottom hinge
assembly and lightly tap with plastic
or
rubber hammer.
When door hangs true with
cabinet, tighten bolts.

INSTALLATION INSTRUCTION
IDL Lamp Replacement

Figure 1

___________ STEP 1 ___________

___________ STEP 4 ___________

___________ STEP 7 ___________

Unplug the cooler.

Install the new lamp by placing the
lamp terminals in the upper lamp holder first.

Pull on bulb to make sure it is seated
properly.

___________ STEP 2 ___________

___________ STEP 8 ___________
Remove lamp cover by squeezing it in
the center, twist and pull outward.
___________ STEP 3 ___________
The lamp can then be removed by
pushing it up and then out. This will
release the lamp from the lower lamp
holder. At this point the lamp can be
totally removed.

___________ STEP 5 ___________
Push up on the bulb to recess the upper
holder.

Replace lamp cover by squeezing and
snapping into retainer on lamp assembly.

___________ STEP 6 ___________

___________ STEP 9 ___________

With the upward pressure applied, line
up the terminal on the lower end of the
bulb with the lamp holder. Once
aligned the lamp will snap into place.

Plug in the cabinet.

62

___________ STEP 10 ___________
If lamp does not illuminate another
problem may exist.

INSTALLATION INSTRUCTION
GLASS INSERT - SWING DOOR
Glass Door Refrigerator Replacement Instruction
(See opposite page for freezer instruction)

GDM-49
___________ STEP 3 ___________

___________ STEP 7 ___________

Remove the door handle (two screws).

To support glass insert use one-sided
tape to secure two plastic shims (3/32"
x 7/8" x 2-1/2") on opposite ends of
bottom door frame a few inches from
the corners.

REQUIRED TOOLS
___________ STEP 4 ___________
• Phillips Head Screwdriver
• 3⁄8" Wide Double-Sided Tape
NOTE:
For greater safety and ease of
installation it is recommended
that two persons assist in
replacement procedure.

Remove the screws that secure the four
back plate pieces to the door. Remove
all four back plates.
___________ STEP 5 ___________

IT IS NOT NECESSARY TO
REMOVE THE DOOR FROM
THE CABINET

Beginning at a corner carefully pry the
broken glass loose from the frame. If
necessary use heat gun or hair dryer
aimed in the space between glass insert
and door frame to lessen resistance of
double-sided tape. Carefully dispose
of the damaged glass.

___________ STEP 1 ___________

___________ STEP 6 ___________

Turn the cooler off.

Remove any excess tape or glass from
the lip on the door frame. Replace with
new double-sided tape on the 1/2" lip.

___________ STEP 2 ___________
Remove the rubber gasket from the
perimeter of the interior side of the
door.

63

___________ STEP 8 ___________
Remembering to keep the tempered
glass to the handle side of the frame
place the new glass insert inside the
frame and press against the two-way
tape. (The etched TRUE logo is positioned on bottom corner of the tempered glass side.)
___________ STEP 9 ___________
Square up door by adding shims
between glass insert and the handle
side of the door frame.

INSTALLATION INSTRUCTION
GLASS INSERT - SWING DOOR ...CONTINUED
Freezer - Glass Door Replacement Instruction
___________ STEP 10 ___________

REQUIRED TOOLS

Place double sided tape on all edges of
glass insert to create a seal with the
back plate.

• Phillips Head Screwdriver
• 3⁄8" Wide Double-Sided Tape
• (2) Self Stripping Connectors
NOTE:
For greater safety and ease of
installation it is recommended
that two persons assist in
replacement procedure.

___________ STEP 11 ___________
Replace bottom back plate then top
and side plates. Tighten all screws.
___________ STEP 12 ___________

IT IS NOT NECESSARY TO
REMOVE THE DOOR FROM
THE CABINET

Replace the handle.

without damaging the heating element.
If necessary use heat gun or hair dryer
aimed in the space between glass insert
and door frame to lessen resistance of
double-sided tape. It is recommended
that one person support the damaged
glass insert while the other releases the
wires from the two self stripping connectors.
Carefully dispose of the damaged
glass.
Follow steps 6 - 7 of refrigerator glass
insert installation.

___________ STEP 13 ___________
Follow steps 1 - 4 of refrigerator
glass insert installation

Snap the gasket back into the back
plate.

___________ STEP 5 ___________

___________ STEP 8 ___________
Rejoin heater wires using self stripping
connectors (black to black & white to
white) as shown in figure 2.

Freezer doors have heater wires running
through the door frame and around the a. Place self stripping connectors on
heater wire leads as shown in diarear side of the glass insert which juncgram a.
tion at the lower inside corner and plug
into the compressor area. The glass
insert must be carefully pried loose start- b. Insert leads from bottom of
replacement glass into appropriate
ing from the top corner and working
self stripping connectors (black to
down to gently free the glass insert
black & white to white) as shown
in diagram b.
Door frame
heater wires

a.

Self stripping
connectors

c.

Plug into
interior
electrical
box

c. Snap closed self stripping connector as shown in diagram c.

To glass
insert

Follow steps 8 - 13 of refrigerator
glass insert installation

Figure 2.

b.

64

INSTALLATION INSTRUCTIONS
Glass Insert Gas Release (High Altitude Installation)

Top View of Glass Insert
(Step 6-7)

Three panes
of glass.

Holes to be drilled
with 1/16” drill bit.

Required tools:
- Phillips head screwdriver
- 3/8” Wide double sided tape
- 1/16” Drill Bit
- Drill
- Silicone

__________ STEP 5 __________
Beginning at the corners carefully
pry the broken glass loose from the
frame. If necessary use heat gun or
hair dryer aimed in the space
between glass insert and door frame
to
lessen resistance of double-sided
__________ STEP 1 __________
Slide left door (door positioned on tape.
outside track) to the right. Lift door
up and pull out at the bottom. Right __________ STEP 6 __________
Carefully use the drill with a 1/16”
door (door positioned on inside track)
drill bit to drill through the spaces
can be removed in the same manner.
between the glass.
__________ STEP 2 __________
Remove the nylon cord from the top
of the door.
__________ STEP 3 __________
Set the door (handle side down) on
a flat surface.

__________ STEP 9 __________
Remembering to keep the tempered
glass to the handle side of the frame
place the new glass insert inside the
frame and press against the two-way
tape. (The etched TRUE logo is
positioned on the tempered glass
side.)
__________STEP 10 __________
Replace the four Aluminum glass
insert holders.

__________ STEP 11 __________
__________ STEP 7 __________ Reconnect the nylon cord to the top
After gas is released from in of the door and replace the door as
between both panes use the silicone originally removed.
to reseal drill holes.

__________ STEP 8 __________
Remove any excess tape or glass
__________ STEP 4 __________ from the lip on the door frame.
Remove the screws that secure the Replace with new double-sided
four glass insert holders to the door. tape on the 1/2” lip.
Remove all four aluminum pieces.
65

GDM & T SERIES IDL GLASS INSERT REPLACEMENT

Warning:
The Edges on the glass
insert are very sharp. To
avoid personal injury, use
adequate protection for your
eyes and hands when working
or handling this or any
other glass component.
Required tools:
- Phillips head screwdriver
- 3/8” Wide double sided tape
- Side cutters (if working with
freezers)
- Butt connectors (if working
with freezers)
- Crimping tool (if working with
freezers)
__________ STEP 1 __________
Disconnect power to the cabinet.

__________ STEP 4 __________

__________ STEP 8 __________

Remove doors handle and place
door on a flat surface.

Install the new glass insert by pushing it into the light channel first and
then work out-wards toward the
handle side.

__________ STEP 5 __________
Remove door gasket and back
plates from the top, bottom and
handle side.
__________ STEP 6 __________
Beginning at the upper corner in the
handle side, carefully pry the broken glass loose. If necessary, use a
heat gun or hair dryer to loosen up
the insert from double sided tape.
Note:
Do not forget to disconnect the
glass insert heater wires before
pulling it out and reconnect
them before sliding the new
glass insert in.

__________ STEP 2 __________

__________ STEP 7 __________

Disconnect IDL plug from cooler.

Remove any excess tape and glass
from the lip on the door’s frame and
replace with new double sided tape.

__________ STEP 3 __________
Loosen up the tension from torsion
spring and remove door. Refer to
Removal and Installation of GDM
and
T-Series
Swing
Door
Instructions on page 46-47.

66

NOTE:
Make sure the TRUE logo on the
insert, is located outside at the
bottom of the frame.
__________ STEP 9 __________
Install gasket back plates and gasket.
__________STEP 10 __________
Mount door and tighten torsion
spring. Refer to Removal and
Installation of GDM and T-Series
Swing Door Instructions on page
46-47.

REPLACEMENT OF DOOR FRAME HEATER ON IDL FREEZER DOORS

Tools Required:
- Phillips Head Screwdriver
- 3/8” Socket Set
- Awl
- Wire Strippers-Crimper
- Needle Nose Pliers
Note:
For greater safety and ease of
installation, it is recommended
that two persons assist in the
replacement procedure.

___________ STEP 5 __________
Remove the screws that secure the
four back plates to the door.
___________ STEP 6 __________
With your Awl, pry out plastic shims
wedged between glass insert and door
frame.

will expose the heater wires inside
door frame. Remove old heater and
replace with new heater cable.
___________ STEP 10 __________
Remove any old tape from the lip on
the door frame. Replace with new
double-sided tape on the 1/2” lip.

___________ STEP 11 __________

Disconnect electrical power to cabinet.

Re-install glass insert by first
installing two of the plastic shims to
opposite ends of bottom door frame a
Before removing glass insert, disconfew inches from the corners.
nect the electrical wiring to door frame
Remember to keep the tempered
heater and heater inside glass insert.
glass to the handle side of the frame
Note: Wiring harness connection for and press against the two-way tape.
your info: 2-whites go to 2-whites on
lower lamp socket. 2-blacks go to 2Note:
blacks on upper lamp socket. 1 red is
The etched TRUE logo is
115v lead to both frame and insert
positioned on bottom corner of
heaters. 1 blue is neutral to both
the tempered glass side.
frame and insert heaters.

___________ STEP 2 __________

___________ STEP 8 __________

Remove door from cabinet and lay on
a flat surface. Refer to Removal and
Installation of GDM and T-Series Swing
Door Instructions on page 46-47.

Remove glass insert by pushing on
insert in upper corner of the handle
side. If necessary, use a heat gun or
hair dryer aimed in the space between
glass insert and door frame to lesson
resistance of double stick tape.

___________ STEP 7 __________

Note:
It may not be necessary to remove
the door from the cabinet if two
persons are assisting in the
replacement procedure.

___________ STEP 1 __________

___________ STEP 3 __________
Remove door gasket from the
perimeter of the interior side of the
door.
___________ STEP 4 __________
Remove door handle (2 screws).

Note:
For safety, gloves and eye protec tion should always be worn when
handling glass.
___________ STEP 9 __________
Once glass has been removed, this

67

___________ STEP 12 __________
Square glass insert to door frame by
adding shims to the handle side.
___________ STEP 13 __________
Replace backplates, door handle and
gasket.
___________ STEP 14 __________
Re-install door on freezer (if
removed). Refer to Removal and
Installation of GDM and T-Series Swing
Door Instructions on page 58-61.

INSTALLATION INSTRUCTION
IDL Door-Wire Harness Replacement

___________ STEP 1 ___________
Unplug the cooler and door harness
and remove louver grill. Remove “P”
clip.

Figure 1

___________ STEP 2 ___________
Take the door off the cooler and place
on a flat stable surface. Refer to
Removal and Installation of GDM and
T-Series Swing Door Instructions on
page 58-61.
___________ STEP 3 ___________
Remove door gasket.
___________ STEP 4 ___________

30˚

Remove back plastic. This will require
a phillips screwdriver.
___________ STEP 5 ___________
Remove the glass insert. This can be
done by placing a putty knife between
frame and the insert. Then pry the
insert up and out of the frame. The
insert will stick due to double sided
tape that is used to hold.

Figure 2

___________ STEP 6 ___________
Remove the strain relief bushing on the
underside of the door frame.
___________ STEP 7 ___________

___________ STEP 8 ___________

___________ STEP 9 ___________

Pull light channel to expose lamp holder and door harness connection.

Cut the lamp holder wires directly
above the lamp connectors.

Remove the door harness.

68

INSTALLATION INSTRUCTION
IDL Harness Replacement ...Continued
___________ STEP 10 ___________

___________ STEP 17 ___________

___________ STEP 22 ___________

Check the physical dimension of the
new cord. If the new cord is thicker it
is necessary to enlarge the hole in the
door frame. Enlarge the hole using a
5/8” drill bit.

Replace the glass insert. Make sure
double sided tape is not bunched or
lying outside of the door frame. The
insert should slide into the light channel first, this may require force. Once
in the channel then lay within the
frame opening.

Plug the harness receptacle into the
ballast receptacle and reinstall the
louver grill.

___________ STEP 11 ___________
Place strain relief around the new door
harness.

___________ STEP 18 ___________

___________ STEP 12 ___________

Replace the back plastic. Match up
existing screw holes and use existing
screws to fasten.

Route door harness through frame hole
to allow connection to lamp holder
wires.
___________ STEP 13 ___________
Strip lamp holder wires and door harness wires.
___________ STEP 14 ___________
Match wires (see wiring pairing) and
crimp on end connectors to each set.
___________ STEP 15 ___________
Put the light channel back in its
original position. Be sure wires are not
pinched within the frame. Remove
excess slack by pulling on door harness.
___________ STEP 16 ___________
Place the strain relief back into the
door frame.

___________ STEP 23 ___________
Plug in the cabinet and test.

_______ WIRE PAIRING ________
Door harness to lamp holder

___________ STEP 19 ___________
The lamp holder combination will
Replace the gasket and hang the door. have two black wires and two white
wires. The door harness will have
either two black and two white wires
NOTE:
A test should be run before re-hang - or one green, one red, one black and
one white wire. Below are the wire
ing the door. Simply support the
combinations for each.
door and plug it into the ballast
receptacle. Plug the cooler in and
Multi colored door harness to lamp
see if the door light comes on.
holder
___________ STEP 20 ___________
Green wire
to
Black wire
See figures 1 & 2.
Red wire
to
Black wire
White Wire
to
White Wire
Route the door harness per figure 2.
Black Wire
to
White Wire
___________ STEP 21 ___________
Place "P" clip as shown. Be sure all
the slack in the door harness is
removed before tightening the clip.
Also, be sure the clip is placed in plane
with the binge bearing.
NOTE:
If larger cord is being used you will
also have to replace the p-clip. This
will be included in the
replacement kit.

69

White/Black door harness to lamp
holder
White Wire
Black Wire

to
to

White Wire
Black Wire

INSTALLATION INSTRUCTION
SHIMMING THE GLASS INSERT

Under normal circumstances your True Merchandiser won’t require any type of adjustments,
except for the ones already outline in your installation instructions. When install properly you will
have a perfectly aligned piece of equipment. There will be however some occasions in which it
will be necessary to go a little deeper in order to accomplish a perfect alignment. One of the
most common problems at installation is the door(s) sagging or unaligned, to correct this
condition here are the recommended procedures:
1. Make sure that there is no damage to the door(s) or the cabinet.
2. Try to level the door(s), by adjusting the leveling legs. Perform this procedure
by adding castor shims if the unit is on castors.
3. Try to align the door(s) by adjusting the bottom hinge left or right on the
swing type door(s).
Usually by performing these procedures the alignment of the door(s) is accomplished.
If after performing these procedures the problem persists, it is recommended to adjust the
glass insert to square door by shimming it. To shim the glass insert the recommended
procedures are as follows:
WARNING: SAFETY GLASSES SHOULD BE USED WHEN HANDLING OR
WORKING WITH THIS OR ANY OTHER GLASS.
a. Remove the gasket from the gasket base.
b. Remove the screws holding the gasket base around the door and remove the
gasket base.
c. With a putty knife loosen up the glass insert around the door frame.
It might be necessary to use a heat gun.
d. With a two by four or a similar device, proceed to lift the door frame by prying
from the bottom outer corner. See Photos 1 and 2.
e. Shim the glass insert wherever there is a space between the frame and the insert.
See photo 3 and 4.
f. Press the insert against the door frame and re-install the gasket base and the gasket.

70

INSTALLATION INSTRUCTION
SHIMMING THE GLASS INSERT CONTINUED

71

INSTALLATION INSTRUCTION
Lock Installation - GDM - model 23/26 single swing door
REQUIRED TOOLS
• tape measure
• 1/4" drill
• 2" saw drill hole saw
• 3/4" saw drill hole saw
• straightedge
• tin snips
• Phillips screwdriver
• file
• drill bit for screws on lock cup
___________ STEP 1 ___________
Drill 1/4" pilot hole 37" from the top of
the cooler and 1 9/16" down from end
panel edge. Pierce through wall
thickness and then rock slightly to create
a vertical slot approximately 1/2".

19/16˝

insulation. Remove insulation from
created hole and smooth burs with a
file.

___________ STEP 6 ___________
Install latch and secure with phillips
washer head screw.
___________ STEP 7 ___________
Pull gasket away from door trim.
Using masking tape as a center point.
Score interior door trim using the lock
Lock
Assembly

Outside of
Cooler

___________ STEP 4 ___________
Using straightedge, pencil mark a
straight line, parallel to the lock cup
knockout opening. With tin snips, trim
off top of lock cup.
___________ STEP 5 ___________
Insert lock cup into drilled opening
(interior wall), while inserting lock

to measure top and bottom width.
With tin snips, cutaway door trim in
order to accommodate lock plate.
Front
view
Latch front
view

37˝

___________ STEP 2 ___________
Using a 2" hole saw, insert drill into
existing hole and align top of bit with
the coolers black tank plastic. Drill far
enough to pierce the interior skin (stop
at the insulation).

Trimmed with
Tin Snips

Cabinet
Side View
Lock plate

Lock
assembly
(exploded view)

Gasket

Lock
Plate

Inside of
Cooler

___________ STEP 3 ___________
Insert 3/4" hole saw into original, exterior pilot hole, and drill through

assembly from the exterior wall. Fasten
assembly by attaching hex nut. Anchor
lock cup with three self-tapping screws.

72

Note:
Other single swing door
cabinets please consult True
Manufacturing Technical
Service at 800-325-6152.

INSTALLATION INSTRUCTION
BARREL LOCK INSTALLATION (GDM slide door models)

REQUIRED TOOLS
Foam

•
•
•
•
•
•
•
•

Drewel tool or sharp knife
3/4" hole saw
Pop rivet tool
7/8" deep well socket
Tape measure
Phillips screw driver
Slot screw driver
#32 drill bit

Aluminum
interior wall

3” Black plastic
breaker strip

Foam Insulation
34 3/4”
Latch

Assembly
Screw

7/8”
Barrel Lock
Screw and latch tube
Install in to back of
door frame

Lock Nut

Vinyl End
Retainer plate
Foam
3/4” Round hole

Top View
Front View
Door
Frame

Jamb
gasket

INSTALLATION
___________ STEP 1 ___________
Use tape measure and mark a center
line at 34 3/4" down from the top of the
cabinet on the left end. Mark second
center line 7/8" from outside edge of
cabinet . This should locate the hole in
the end of the cabinet.
___________ STEP 2 ___________
Use 3/4" hole saw and drill hole on
center mark.
___________ STEP 3 ___________
Remove door jam gasket from left
door jam.
___________ STEP 4 ___________
Draw center line on black plastic fill
in. Align fill in center line with cabinet center line and mark a line along
top and bottom to fill in.
___________ STEP 5 ___________
Using drewel tool or sharp knife, cut
out black plastic breaker on marked
lines. Remove this section of breaker
completely. Some of the aluminum
wall will need to be removed to create a
large enough compartment to work in.

___________ STEP 6 ___________
Once the breaker is removed, now the
foam can be dug out to form the lock
box. Only enough foam should be
removed to install lock.
___________ STEP 7 ___________
Install lock assembly through 3/4"
hole. Place retainer plate and lock nut
end, tighten with 7/8" socket: Install
tumbler and latch assembly and tighten
screw.
___________ STEP 8 ___________
Install black plastic fill in plate working lock to make sure latch will move
through the slot. When components
operate properly, fasten fill in with
black pop rivets.

REMINDER

Remember to install left
door gasket

73

___________ STEP 9 ___________
With left door installed, mark rear of
door where the notch in the latch meet
the door frame. Drill a #32 hole on the
mark. Install screw and latch tube
assembly into drilled hole. Latch
should drop onto tube assembly and
lock left door.
___________ STEP 10 ___________
Install lock bar assembly to rear edge
of right door. Install so the bar is 2"
from the top of the door in the storage
position (use #32 drill bit).
___________ STEP 11 ___________
Lower bar into locking position. It
should be positioned against 3" breaker strip. Install third SS clip so locking
bar will fall into it as a pocket. This
will hold bar in the locking position
(use #32 drill bit).

SLIDE BARREL LOCK (TOP VIEW)

Aluminum interior wall

3” Black plastic
breaker strip

Foam Insulation
Assembly Screw
Latch

Barrel Lock

Lock Nut

Vinyl end
Retainer plate
3/4” Round hole

74

SLIDE BARREL LOCK (FRONT VIEW)

FOAM

34 3/ 4˝

7/8˝

Screw and latch tube
Install in to back of
door frame

FOAM

Door Frame
Jamb Gasket

75

INSTALLATION INSTRUCTION
LOCK INSTALLATION (GDM -5 & GDM-5PT swing door models)

REQUIRED TOOLS
• Tape Measure
• 1/4” Drill
• 2” Saw Drill Hole Saw
• 3/4” Saw Drill Hole Saw
• Straight Edge
• Tin Snips
• Phillips Screw Driver
• File
• Drill Bit For Screws on Lock Cup

___________ STEP 4 ___________

___________ STEP 9 ___________

Check fit of locking cylinder after
inserting through the outer cooler wall.
Fill any air space around cylinder and
plate with insulation.

Remove portion of the plastic channel
wall where the strike plate will be
located.
___________ STEP 10 ___________

___________ STEP 5 ___________

FIRST...
Before beginning installation, remove
front shelf standard from interior wall
on handle side of cabinet.
INSTALLATION
___________ STEP 1 ___________
Drill 3/4" hole on outer cooler wall of
foam. (Do not penetrate inner wall).
(See diagram) Center point of hole is
2 1/4" from front of cooler (including
plastic trim) and 13 3/8" from bottom
of cooler.
___________ STEP 2 ___________
Drill 2" hole on inner cooler wall, centered over 3/4" hole. Drill just deep
enough to accommodate white-metal
backing plate.
CAUTION
Do Not Drill Too Deep.

___________ STEP 3 ___________
Remove insulation so white-metal
backing plate will fit in hole.

Place white-metal backing plate over
locking cylinder, into 2" hole. Attach
lock nut to secure cylinder. Drill holes
and attach white metal backing plate to
inner cooler wall. (this can be done
with screws or pop rivets your option.
Parts not provided.)
___________ STEP 6 ___________
Attach lock arm to locking cylinder
with 1/2" screw (provided). Tighten
lock nut and screw. Locking mechanism on cooler wall should now be
complete. Check operation.

Securely attach strike plate to metal
frame (through plastic channel) with
3/4" screws (provided).
___________ STEP 11 ___________
Replace rubber gasket in plastic door
channel.
___________ STEP 12 ___________
Check for proper operation.
___________ STEP 13 ___________
Install split standard (2 pieces) in place
of original one piece standard. Use
original mounting holes and secure.

___________ STEP 7 ___________
Remove rubber gasket from plastic
door channel.
___________ STEP 8 ___________
Determine proper height for strike
plate extension to be engaged by lockarm. Then determine location for two
drill holes to attach strike plate to door
frame. Drill two 3/16" holes for strike
plate through door frame and innermost plastic channel. (CAUTION:
Make sure strike plate is positioned on
the door so when the door is closed it
will pass as close to the edge of the
opening as possible without hitting.)

76

NOTE
Shorter piece should be at top.

INSTALLATION INSTRUCTION
RATCHET LOCK & PLASTIC DOOR STOP - SLIDE DOOR

Figure 1

REQUIRED TOOLS

___________ STEP 4 ___________

• Drill With 1/8" Bit
• 1/4" Nut Driver
• Exacto Knife or Razor Blade Knife

Using an Exacto knife or razor blade
carefully cut rubber gasket along the
edges of the ratchet bar.

___________ STEP 1 ___________

___________ STEP 5 ___________

Remove left side door by lifting up and
out of bottom track.

Replace left side door and check slide
operation.

___________ STEP 2 ___________

NOTE:
Ratchet bar may have to be bent in
slightly so not to impede
operation of left hand door.

Position ratchet bar over left side of
right hand door, centered top to bottom. (see figure 1.)
___________ STEP 3 ___________

___________ STEP 6 ___________

Drill through pilot hole in ratchet bar
and into door frame with 1/8" drill bit.
Anchor by installing 1/4" hex head
screw (provided).

To lock cabinet, slide ratchet lock onto
ratchet bar through slot (lock should be
oriented with slot towards top of lock).
(see figure 2.)
Figure 2

CAUTION
Do not drill beyond 3/4" to avoid
hitting glass insert.

77

INSTALLATION INSTRUCTION
RATCHET LOCK & PLASTIC DOOR STOP - SLIDE DOOR ...Continued
Plastic Door Stop Installation Instruction
(Unnecessary if factory installed)
REQUIRED TOOLS
• Drill With 1/8" Bit
• Phillips Head Screwdriver
__________ STEP 1 __________
Remove left side door by lifting up
and out of bottom track.
__________ STEP 2 __________
Position the plastic door stop centered in the front door channel and
mark it. Center within the confines
of the door that was removed.
__________ STEP 3 __________
Figure 3

Peel backing from double-sided
tape and position on previously
marked spot.
__________ STEP 4 __________
Drill 1/8" holes using the predrilled holes of the plastic door stop
as a template.
__________ STEP 5 __________
Install phillips counter-sunk screws
provided. (see figure 3.)
__________ STEP 6 __________
Replace left side door and check
slide operation. If door stop
impedes closing of left hand door,
remove door, detach plastic door
stop and remove one layer or piece
of the door stop and reinstall.

NOTE:
Length of door stop and
number of screws determined
by cooler model

78

INSTALLATION INSTRUCTION
LOCK INSTALLATION - TD Models

REQUIRED TOOLS
• Phillips screwdriver
__________ STEP 1 __________

__________ STEP 2 __________

__________ STEP 3 __________

Remove original lid handle and Close lid completely. Slide ratchet Slide locking cylinder on ratchet
replace with notched handle provided. bar through notched handle so the bar until snug against handle. Lid
bar wraps around front rail assembly. is now in locked position.
79

GENERAL
INSTRUCTIONS

In this section you find many different instructions from how to install
castors to how to install vandal panels. If there are any questions or we
do not cover your needs in this section, please call.
Technical Service 1-800-325-6152

80

INSTALLATION INSTRUCTION
OVERSHELF OPTION - TSSU, TWT, TUC
Congratulations on your purchase of an accessory that has been designed to efficiently assist your food
preparation. The following instruction has been written to assist you in your overshelf installation.

KIT CONTENTS
• Shelf, 1 ea.
• Shelf supports, 2 ea. (60" models
offer 3 ea.)
• 1/4-20x1" Hex Head Bolt, 4 ea.
• 1/4-20x1-1/2" Hex Head Bolt, 4 ea.
(60" models offer 6 ea.)
• 1/4" Flat Washer, 4 ea. (60" models
offer 6 ea.)
REQUIRED TOOLS
• 7/16 Wrench

INSTALLATION
___________ STEP 1 ___________
Place one flat washer on each of the
1/4-20x 1-1/2" hex head bolts and
insert one of these assemblies into each
mounting hole, located on the longer
section of the square shelf support.
___________ STEP 2 ___________
Hold the shelf support next to the
threaded holes that are located along
the edge on the back of the cabinet,
(60" models have a third shelf support
that is located near the center of the
cabinet back).

Figure 1.

___________ STEP 4 ___________

___________ STEP 6 ___________

Repeat steps 2 and 3 to install the second shelf support, (for 60" models,
repeat steps 2 and 3 for the third support).

Adjust the shelf assembly so that the
shelf supports are vertical and the shelf
is flat
___________ STEP 7 ___________

___________ STEP 5 ___________

Hold the shelf up between the two
mounted shelf supports and thread one
1/4-20x1" hex head bolt into each of
the
two threaded holes that are located
___________ STEP 3 ___________ on the
inside surface of each shelf support,
(for
48" and 60" models, have
Carefully thread the 1/4-20 x 1-1/2" someone the
help
hold the shelf in posibolts into these threaded holes until the tion). Thread each
until the shelf
supports make contact with the cabinet is drawn against thebolt
shelf
support and
and the bolts are hand tight.
the bolt is hand tight.

81

Firmly tighten each bolt using the
7/16 wrench.
CAUTION
Do not place more than 100 lbs.
of weight upon the overshelf, and
never stand on the overshelf.

INSTALLATION INSTRUCTION
INSTALLING THE CRUMB CATCHER / ACCESSORY FOR THE TSSU SERIES

This instruction is True’s recommended procedure for installing the crumb
catcher option.
REQUIRED TOOLS
•
•
•
•

ANCHORING
CATCHER

TEMPLATE

CRUMB CATCHER
INSTALLATION

CRUMB

___________ STEP 2 ___________
___________ STEP 5 ___________
Place the crumb tray on the cabinet
counter-top so that it is equally
positioned at each end.
___________ STEP 3 ___________

Pencil or Marker
Phillips Screwdriver
Adhesive Tape or Equivalent
Power Drill and 1/4” drill bit

THE

Use adhesive tape to temporarily hold
the crumb tray in position while you
mark with a pencil the hole location on
the stainless steel counter-top.

8

___________ STEP 6 ___________
The plastic inserts are now ready to be
installed. Push the plastic insert into
one of the 1/4” diameter holes
___________ STEP 7 ___________
With all the plastic inserts installed,
place the crumb catcher on the counter-top and fasten using the screws provided.

7

1

Remove any small burs from around
the holes that have been drilled.

___________ STEP 8 ___________

2

6
4

Place the 3/4” thick cutting board provided with this kit on the cabinet
counter-top

3
5

INSTALLATION INSTRUCTION

___________ STEP 4 ___________

___________ STEP 1 ___________

Remove the crumb tray and drill each
hole using the 1/4” diameter drill bit.
Be careful not to allow the drill to wander and scar the countertop.

Remove the white plastic cutting board
provided with the cabinet from the
counter-top.

82

Figure 1.

INSTALLATION INSTRUCTION
FIELD INSTALLING THE TSSU SERIES 19” CUTTING BOARD
This instruction is True’s recommended procedure for installing the 19”
cutting board option.
REQUIRED TOOLS
•
•
•
•
•

Pencil or Marker
Flathead Screwdriver
Adhesive Tape or Equivalent
Power Drill
Adjustable Wrench

LOCATION

rotation until resistance is felt. (overtightening will strip rivnut)
___________ STEP 7 ___________
When minor resistance is felt, rivnut
has expanded to fill the drill hole.
Remove tape from sides. Repeat steps
2 through 7 for each of the four anchor
positions, and replace anchor bracket.
Use a slotted screwdriver to tighten
thumb screws.

Align the predrilled cutting
board holes with the locating pins
positioned on the stainless
working surface.
SURFACE PREPARATION
___________ STEP 1 ___________
Tape off both sides of work surface so
that errant drilling will not mark the
side of the cabinet.
___________ STEP 2 ___________
Place the anchor bracket over the top
of the cutting board edge, pulling forward until bracket backstop is seated
firmly against the cutting board edge.
Use bracket screw holes as a template
for drilling.
___________ STEP 3 ___________
Pencil mark drill hole. Using the #2 or
15/64 bit provided, drill through the
metal thickness, stop, and pull out.
___________ STEP 4 ___________
Assemble riv-nut tool provided and
lubricate, (WD-40, etc.), the threads.
Ensure that the flange of the rivnut
seats against the knurled edge.
___________ STEP 5 ___________
Insert allen wrench into top of crimping tool and place entire rivnut assembly into recently drilled holes.

Figure 1.

___________ STEP 6 ___________
Secure crimping tool with a wrench
and turn allen wrench in a clockwise

83

INSTALLATION INSTRUCTION
ANCHORING THE TSSU HOOD COVER

This is True’s recommended
procedure for installing the
fasteners required to connect the
sandwich salad hood cover to the
hood. See callout #1 on the
illustration.
ASSEMBLY
__________ STEP 1 __________
Locate the hood cover, (packaged
within the cardboard container on
top of the salad sandwich unit), and
position under the hood.
__________ STEP 2 __________
Remove the slotted thumb screw
from hood by backing out the
factory installed, slotted thumb
screw. See diagram of slotted
screw and callout #2
__________ STEP 3 __________
Place hood cover into final
position, (beneath hood), align
hood hinge pin with anchor hole on
hood cover and re-attach fastener
by replacing thumb screw into
hinge pin.
__________ STEP 4 __________
Repeat procedure for both ends of
hood.

84

INSTALLATION INSTRUCTION
INSTALLING THE TPP SERIES SERVICE SHELF (prior to NSF-7 recessed pan design)

REQUIRED TOOLS

b. Remove the service shelf.

•
•
•
•
•
•
•

c. Lightly punch a starter mark and
drill a pilot hole in each of the
two mounting areas. (be careful
not to drill beyond an inch and
three quarters.

Pencil or Marker
Slotted Screwdriver
Center Punch
Adhesive Tape or Equivalent
Power Drill With 11/32" Bit
Adjustable Wrench
Pilot hole drill bit

CAUTION
Do not turn hex wrench or rivnut
will strip out.
__________ STEP 5 __________
c. Turn hex nut in a counterclockwise direction, two full turns,
with a wrench while holding tool
at right angles to the work area.

__________ STEP 1 __________

d. Break nut loose with a
clockwise movement, and
remove both wrenches from
the tool.

SURFACE PREPARATION Mask off the mounting surface of
your Pizza Prep or Sandwich/Salad
unit with adhesive tape. (this will prevent scaring on the cabinet surface.

e. Remove rivnut tool
from the rivnut by
revolving entire
tool in counterclockwise direction.
Figure 1.
__________ STEP 6 __________
FINAL POSITIONING a. Remove masking tape, and
replace shelf. Seal bracket if
required.

__________ STEP 2 __________
d.Using a 11/32" drill bit, complete
the hole.

Remove service shelf from box and
place 3" from the rear of the cabinet
(for sandwich/salad units) and 3 __________ STEP 4 __________
3/4" from the front (for pizza prep
a.Thread the 1/4 - 20 rivnut on the
units) rivnut will strip out.
pull-up stud of the rivnut tool
until tight and insert into drilled
__________ STEP 3 __________
hole.
a. Using the predrilled holes of the
service shelf as a template, place b.Place hex wrench in the socket of
the jackscrew and hold stationary.
a pencil mark in each of the
mounting holes.
85

b.Align mounting holes of shelf
with rivnut holes and screw 1/4
- 20 round head bolts into
threaded rivnuts.

FIELD INSTALLING THE TPP SERVICE SHELF
REQUIRED TOOLS
• Pencil or Marker
• Slotted Screwdriver
• Center Punch
• Power Drill
• Masking tape
SURFACE PREPARATION
__________ STEP 1 __________
Tape off both sides of the elevated
ingredient pan area where the overshelf legs will be anchored. (this, so
that errant drilling will not mar the
side of the cabinet).
__________ STEP 2 __________
Remove service shelf from box and
place shelf legs on top of mounted
cutting board. Legs that measure
18” (shorter legs), are to positioned
toward the front of prep table.
__________ STEP 3 __________
Center legs on elevated ingredient
pan area - left to right. The shelf is
not the exact width of the pizza
prep table.
__________ STEP 4 __________
Using a level placed on top of the
service shelf, adjust, (raise or
lower) the rear legs for anchor positioning.
__________ STEP 5 __________
Using the pre-drilled holes of the
service shelf as a template, place a
pencil mark on the elevated surface.
Create a pilot hole with a nail or
small drill bit.
__________ STEP 6 __________
Assemble riv-nut tool provided and
lubricate, (WD-40, etc), the
threads. Ensure that the flange of
the riv-nut seats against the knurled
edge.

__________ STEP 7 __________
Insert allen wrench into top of
crimping tool and place entire rivnut assembly into recently drilled
holes

__________ STEP 9 __________

When minor resistance is felt, rivnut has expanded to fill the drill
hole. Remove tape from sides.
Repeat these steps each of the four
__________ STEP 8 __________
Secure crimping tool with a wrench anchor positions, and replace
and turn allen wrench in a clock- anchor bracket. Use a slotted
wise rotation until resistance is felt screwdriver to tighten thumb
(overtightening will strip riv-nut)
screws.
NOTE:
Hardware is tapped to rear leg
of service shelf.
86

INSTALLATION INSTRUCTION
SNEEZEGUARD OPTION - TSSU

SNEEZE
GUARD
ASSEMBLY

Figure 1.

KIT CONTENTS

___________ STEP 3 ___________

___________ STEP 7 ___________

• Clear Plastic Shield, 1 ea.
• Supports, 2 ea.
• 1/4-20x1-1/2" Hex Head Bolt, 4 ea.
• 1/4" Flat Washer, 4 ea.
• #8-32 Knurled Waferhead Screw,
4 ea.

Screw the bolts into the threaded
inserts until they are hand tight.

Adjust the two support components so
that they are positioned straight up,
and tighten the four 1/4-20 x 1-1/2"
hex head bolts until the support components are held firmly in position.

REQUIRED TOOLS
•

___________ STEP 4 ___________
Repeat steps 2 and 3 for the remaining
support components which will be
mounted to the other end of the cabinet
back.

7/16 Wrench
___________ STEP 5 ___________

INSTALLATION

Place one flat washer on each of the
1/4-20" hex head bolts.

Remove the protective covering from
the clear plastic shield so that it rests
on top of the two support components.
Be careful not to scratch the plastic
shield.

___________ STEP 2 ___________

___________ STEP 6 ___________

Insert one 1/4-20 x 1-1/2" bolt into
each of the two holes on the support
component and position the support
next to the two threaded inserts that are
mounted to the outer edge on the back
of the TSSU cabinet.

Secure the clear plastic shield to the
supports by installing the four #8-32
knurled waferhead screws into the
threaded inserts that are located; one
on the top, and one on the rear surface
of each support component. Hand
tighten these four screws.

___________ STEP 1 ___________

87

CLEANING AND CARE
The support components are
made of stainless steel and may
be cleaned with any food service
stainless steel cleaner.
The clear plastic shield should
be cleaned only with mild soap,
warm water and a soft cloth.

CASTOR OR LEG FRAME INSTALLATION
GDM & T-Series

Castor or Leg
Frame Installation

GDM-61/69/72 will utilize 3 castor
or leg frame assemblies.

88

INSTALLATION INSTRUCTION
GDM-33CPT Castor Mounting Assembly

89

INSTALLATION INSTRUCTION
TDD-1 CO2 Knock-out

Knockout
Plug

1
2

This instruction is True's
recommended procedure for installing
a remote CO 2 container.
REQUIRED TOOLS
___________ STEP 2 ___________
•
•
•
•

Pliers
Power Drill
Silicone Sealer
Drill bit, 1/2”

Use drill and bit to bore hole straight
back through wall into compressor
compartment.

___________ STEP 1 ___________

___________ STEP 3 ___________

___________ STEP 4 ___________

Remove black knockout plug with a
pair of pliers.

Snake CO2 line through hole down and
around exiting behind rear castor
underneath rear grill.

Seal hole around CO2 line with silicone sealer to prevent cold air leakage.

90

INSTALLATION INSTRUCTION
TDD-2,3,4 (and Club Top models) CO2 Knock-out

This instruction is True's
recommended procedure for
installing a remote CO 2 container.
REQUIRED TOOLS
•
•
•
•

Pliers
Power Drill
Silicone sealer
Drill bit, 1/2”

__________ STEP 2 __________

__________ STEP 3 __________

Use drill to bore hole through insu- Snake CO2 line through knockout
lation while holding tool at a 30° hole and newly drilled hole and
Remove black knockout plug with angle, this should line up with a route through rear grill louvers.
pre-punched hole in the compressor
a pair of pliers.
__________ STEP 4 __________
compartment.
__________ STEP 1 __________

91

Seal hole around CO2 line with silicone sealer to prevent cold air
leakage.

INSTALLATION INSTRUCTION
Vandal Panel Installation for a GDM-33CPT-54
Kit Materials
1. (16) Pop Rivets
2. (8) Mounting Brackets
3. (2) Vandal Panel
__________ STEP 1 __________

__________ STEP 2 __________

__________ STEP 4 __________

The two other Mounting Brackets
are mounted 32 7/8” from the top
of the cabinet to the bottom of the
Mounting Bracket. The two bottom brackets must be installed facing the opposite direction from the
top two brackets already installed
in Step A. See Illustration 2.

Repeat Procedure for installation of
other vandal panel on back of cabinet.

Two Mounting Brackets need to be
positioned on the upper left and
right hand corners of the cabinet.
The Mounting Brackets must be off
1/16” down from the top of the cabinet. See Illustration one. Drill __________ STEP 3 __________
holes with 7/32 drill bit and attach
bracket via pop rivets.
The Vandal Panel slides down on
top of the Top Mounting Brackets
(see Illustration 3). Then the bottom brackets lock onto the Vandal
Panel.
Illustration 1

Center Mounting Bracket
on side of end panel

Illustration 3
Vandal Panel
Mounting Bracket

1/16”
Cabinet
Illustration 2

32 7/8” (From top of cabinet to base of Mounting
Bracket.
Bottom Mounting
Bracket should be facing
the opposite direction
from the Top Mounting
Bracket.

92

INSTALLATION INSTRUCTION
Vandal Panel - GDM-69

Figure 1.
REQUIRED TOOLS
___________ STEP 7 ___________
• Drill - 1/4" Bit
- 3/16" Bit
• Pop-Rivet gun
• Tape Measure

Position one bracket "B" so that the
center of the bracket is 26 1/2" from
the right hand edge of the cooler.
Located the second bracket "B" so that
it is 26 1/2" from the left hand edge of
the cooler. (See figure "2")

___________ STEP 1 ___________
Unplug the cooler.

___________ STEP 8 ___________
___________ STEP 2 ___________

___________ STEP 5 ___________

Position bracket "A" directly under the
sign panel trim with the lip down. (See
figure 2.)

Pop-rivet the bracket in place.

Check the height of the brackets before
drilling.

___________ STEP 6 ___________

The dimension from the top of the lip
on bracket "A" to the bottom of the
lip on bracket "B" must be 53". (See
figure "2")

___________ STEP 3 ___________
Center the bracket on the front of the
cooler.

The two brackets "B" will be mounted
on the front of the cooler, directly
below the bottom door tracks.

___________ STEP 4 ___________
IMPORTANT
Drill five holes in the cooler front by
transferring them through the predrilled bracket.

Check all dimensions carefully
before drilling

93

INSTALLATION INSTRUCTION
Vandal Panel - GDM-69 ...continued
___________ STEP 9 ___________

Repeat this operation for the right side.
(templates are marked left and right

and the top is also indicated.)

When in place, drill with 3/16" bit and
fasten with rivets.
NOTE:
The right side of the cooler is
determined when facing the cooler.
___________ STEP 10 ___________
Two (1/4") holes need to be drilled in
both the left and right vertical door
tracks. Lay the "left side" template
against the front and inside edge of the
cooler. The bottom edge of the template must rest on the top of the lower
plastic door track. (See figure "3".)
Transfer the holes from the template
into the side wall of the cooler. Drill
the holes only 1" deep. Do not drill
through the walls.

To Mount The Panels
___________ STEP 1 __________

___________ STEP 2 __________

Slide the right hand panel into place
by guiding the two pins into the
drilled holes in the vertical door track.
Push the panel to the right and back
until the foam tape rest against the
center door. Repeat for the left panel.

Hang the lip of the center panel on
the lip on bracket "A".
NOTE:
Panels may be shipped in the
locked position - in this case turn
lock to fit panel over bracket “B”
___________ STEP 3 __________
Lock in place by turning the key
locks to engage brackets "B".

Bracket “A”

Hole Locator
Strip

53”

Bottom Door
Track

261/2”
Figure 2.

261/2”
Bracket(s) “B”

94

Figure 3.

Notes

TROUBLESHOOTING

This section provides troubleshooting instructions that will help a
qualified service technician diagnose any problem you may be having
with your cabinet. Because there is risk of electrocution if they are
not followed correctly, a qualified service technician must be used when
following these steps. For diagnosing unusual problems or if there
are questions regarding these instructions, please call.
Technical Service 1-800-325-6152

96

INSTALLATION INSTRUCTION
CALIBRATE TEMPERATURE CONTROL
REQUIRED TOOLS
• Accurate Remote Reading
Thermometer
• 1/4" Nutdriver
• Jeweler Screwdriver
___ Refrigerator Instructions ___
For cooler calibration install thermometer in evaporator coil. Shut door
and get true reading of where control is
opening and closing. Watch to see at
what temperatures compressor cycles
on and off. Compare these to design
temperature of the control and adjust
accordingly.
____ Freezer Instructions _____
For freezer calibration install thermometer next to temperature control
bulb (this is an air sensing control).
Shut door and get a true reading of
where control is opening and closing.
Watch to see at what temperature the
compressor cycles on and off. Compare
these to the design temperature of the
control and adjust accordingly.

Temp. Control
Part Number

˚F
Cut In

˚F
Cut Out

800303
800306
800312
800313
800320
800325
800335
800340
800395

35
40
-8.5
36.5
32.5
62
38
26
40

14.5
18
-14.5
16
26.5
55
20
10
22.8

___________ STEP 4 ___________
Use jeweler screwdriver and adjust
control accordingly:
a. Adjust screws clockwise for colder.
b. Adjust screws counter-clockwise
for warmer.

_________ Calibration _________

Note: 1/4 turn is equal approximately
4 degrees.

___________ STEP 1 ___________

___________ STEP 6 ___________

Unplug the cabinet.

Re-install control into housing. Refer
to Temperature Control Change-Out
Instructions, page 39-41.

___________ STEP 2 ___________
Set control to setting #9.
___________ STEP 3 ___________

When reinstalling freezer control make
sure temperature control wires are
being held up so they do not make contact with evaporator heater.

Remove control from evaporator housing and locate cut in and cut out
screws. Refer to Temperature Control
Change-Out Instructions, page 39-41.

___________ STEP 7 ___________
Reset control to setting #5.

97

___________ STEP 8 ___________
Check control operation with thermometer as done prior to adjustment to
make sure control is functional as
desired.
Calibration Instructions For 20DT
Digital Thermometer
__________ STEP 1

_________

Note that each unit is factory calibrated and a glyptol color coded seal is
placed on the calibration potentiometer to prevent calibration shift. The
color represents date of manufacturer.
__________ STEP 2

_________

Immerse the sensor in a known temperature circulated liquid bath, using a
mercury glass thermometer to obtain
the right temperature, or have a mixture of water and crushed ice (slush) to
obtain 32°F (0°C).
__________ STEP 3

_________

To recalibrate the thermometer use a
small phillips head screwdriver to
adjust the potentiometer on the back of
the 20DT. Turn clockwise to adjust
down and counter-clockwise to adjust
up. To re-seal the potentiometer you
can use clear nail polish.

INSTALLATION INSTRUCTION
CALIBRATE TEMPERATURE CONTROL . . . . . Continued

Temperature Control
Part Number
800345
800358
800366
800369
800371
800382
800383
800393

˚F
Cut Out
15.5
-14.5
15.5
-12.5
23.5
17
-5.5
19.5

˚F
Cut In
-2.5
-8.5
35
-2.5
42
36.5
3
40

• Currently being used in several freezer models

98

Old Temperature
Control Part Number
800312
800303
See Note*
800395 High Altitude
800313
800357 / 800399
800306

CFC & REFRIGERATION BASICS
Trouble Shooting and Service Chart
COMPLAINT

POSSIBLE CAUSE

REPAIR

A

Compressor will not
start - no hum

1.
2.
3.
4.
5.
6.

Line disconnect switch open.
Fuse removed or blown.
Overload protector tripped.
Control stuck in open position.
Control off due to cold location.
Wiring improper or loose.

1.
2.
3.
4.
5.
6.

Close start or disconnect switch.
Replace fuse.
Refer to electrical section.
Repair or replace control.
Relocate control.
Check wiring against diagram.

B

Compressor will not
start - hums but trips
on overload
protector

1.
2.
3.
4.

Improperly wired.
Low voltage to unit.
Starting capacitor defective
Relay failing to close.

1.
2.
3.
4.

5.

Compressor motor has a winding open or shorted.

5.

Check wiring against diagram.
Determine reason and correct.
Determine reason and replace.
Determine reason and correct, replace if
necessary.
Replace compressor.

6.

Internal mechanical trouble in compressor.

6.

Replace compressor.

7.

Liquid refrigerant in compressor.

7.

Add crankcase heater and/or accumulator.

1.
2.
3.

Improperly wired.
Low voltage to unit.
Relay failing to open.

1.
2.
3.

4.
5.

Run capacitor defective.
Excessively high discharge pressure.

4.
5.

Check wiring against diagram.
Determine reason and correct.
Determine reason and correct, replace if
necessary.
Determine reason and replace.
Check discharge shut-off valve, possible overcharge, or insufficient cooling on condenser.

6.

Compressor motor has a winding open or shorted.

6.

Replace compressor.

7.

Internal mechanical trouble in compressor
(tight).

7.

Replace compressor.

1.

Additional current passing through overload
protector.

1.

2.

2.

3.
4.
5.

Low voltage to unit (or unbalanced if three
phase).
Overload protector defective.
Run capacitor defective.
Excessive discharge pressure.

Check wiring diagram. Check for added fan
motors, pumps, etc., connected to wrong side
of protector.
Determine reason and correct.

3.
4.
5.

6.

Suction pressure too high.

6.

7.

Compressor too hot - return gas hot.

7.

8.

Compressor motor has a winding shorted.

8.

1.
2.
3.

Overload protector.
Thermostat.
High pressure cut-out due to:
a. Insufficient air.
b. Overcharge.
c. Air in system.
Low pressure cut-out due to:
a. Liquid line solenoid leaking.
b. Compressor valve leak.
c. Undercharge.
d. Restriction in expansion device.

1. See D. above.
2. Differential set too close - widen.
3a. Check air or water supply to condenser correct.
3b. Reduce refrigerant charge.
3c. Purge.

C

D

E

Compressor starts, but
does not switch off of
start winding

Compressor starts and
runs, but short cycles
on overload protector

Unit runs OK, but
short cycles on

4.

4a.
4b.
4c.
4d.

Check current, replace protector.
Determine reason and replace.
Check ventilation, restrictions in cooling medium, restrictions in refrigeration system.
Check for possibility of misapplication. Use
stronger unit.
Check refrigerant charge (fix leak), add if
necessary.
Replace compressor.

Replace.
Replace.
Fix leak, add refrigerant.
Replace device.

WARNING: ELECTRICAL POWER MUST BE DISCONNECTED WHEN TERMINAL PROTECTIVE COVER NOT
IN PLACE TO PROTECTAGAINST ELECTROCUTION OR VENTED TERMINAL.

99

CFC & REFRIGERATION BASICS
Trouble Shooting and Service Chart ... Continued
COMPLAINT
F

F

G
G

POSSIBLE CAUSE

Unit operates long or 1.
continuously
2.
3.

Start capacitor open,
shorted, or blown

REPAIR
1.
2.
3.

Fix leak, add charge.
Clean contacts or replace control.
Determine fault and correct.

4.
5.
6.
7.
8.

Shortage of refrigerant.
Control contacts stuck or frozen closed.
Refrigerated or air conditioned space has
excessive load or poor insulation.
System inadequate to handle load.
Evaporator coil iced.
Restriction in refrigeration system.
Dirty condenser.
Filter dirty.

4.
5.
6.
7.
8.

Replace with larger system.
Defrost.
Determine location and remove.
Clean condenser.
Clean or replace.

1.

Relay contacts not operating properly.

1.

Clean contacts or replace relay if necessary.

2.

Prolonged operation on start cycle due to:
a. Low voltage to unit.
b. Improper relay.
c. Starting load too high.

3.

Excessive short cycling.

4.

Improper capacitor.

2a. Determine reason and correct.
2b. Replace.
2c. Correct by using pump down arrangement
if necessary.
3. Determine reason for short cycling (E
above) and correct.
4. Determine correct size & replace.

H
H

Run capacitor open,
shorted, or blown

1.
2.

Improper capacitor.
Excessively high line voltage (110% of ratedmax.).

1.
2.

Determine correct size and replace.
Determine reason and correct.

II

Relay defective or
burned out

1.
2.
3.
4.

Incorrect relay.
Incorrect mounting angle.
Line voltage too high or too low.
Excessive short cycling.

1.
2.
3.
4.

5.

5.

6.

Relay being influenced by loose vibrating
mounting.
Incorrect run capacitor.

Check and replace.
Remount relay in correct position.
Determine reason and correct.
Determine reason (See E above) and correct.
Remount rigidly.

6.

Replace which proper capacitor.

JJ

Space temperature
too high

1.
2.
3.
4.

Control setting too high.
Expansion valve too small.
Cooling coils too small.
Inadequate air circulation.

1.
2.
3.
4.

Reset control.
Use larger valve.
Add surface or replace.
Improve air movement.

K
K

Suction line frosted
or sweating

1.

1.

2.

Expansion valve passing excess refrigerant or
is oversized.
Expansion valve stuck open.

2.

3.
4.

Evaporator fan not running.
Overcharge of refrigerant.

3.
4.

Readjust valve or replace with smaller
valve.
Clean valve of foreign particles, replace if
necessary.
Determine reason and correct.
Correct charge.

1.
2.

Restriction in dehydrator or strainer.
Liquid shut-off (king valve) partially closed.

1.
2.

Replace part.
Open valve fully.

1.
2.
3.
4.

Loose parts or mountings.
Tubing rattle.
Bent fan blade causing vibration.
Fan motor bearings worn.

1.
2.
3.
4.

Find and tighten.
Reform to be free of contact.
Replace blade.
Replace motor.

L
Liquid line frosted or
L
sweating
M
Unit noisy
M

WARNING: ELECTRICAL POWER MUST BE DISCONNECTED WHEN TERMINAL PROTECTIVE COVER NOT
IN PLACE TO PROTECTAGAINST ELECTROCUTION OR VENTED TERMINAL.

100

CAPILLARY TUBE REPLACEMENT INSTRUCTIONS
Upright GDM/T-Series Equipment

TOOLS REQUIRED
Drill
Hole Saw
_” Copper Coupling
Two _” 90° Copper Elbow
Torch
Heat Shield
Tube Cutter
Foam Insulation
Cap Tube Suction Line Assembly
(Supplied)
Liquid Line Filter Drier (Supplied)
Cover (Supplied)
Wire Back Guards
(GDM/T-23 Freezer
Model only require ordering part
number 8729777)

________ STEP 1 __________
Inspect supplied cap tube suction line
assembly. The kit should include one
_ ” suction line, cap tube, accumulator section (shipped loose).

Accumulator
Evaporator Coil

Capillary
Tube

Suction Line

NOTE:
You may have to secure the cap tube
to the suction line with the supplied
foil tape. Be sure to use all of the
supplied cap tube. The excess cap
tube should be coiled up and left
inside the evaporator section.

5/8” Hole

_________ STEP 2 __________
Remove the power supply to the
cabinet.

________ STEP 3 __________

Figure 1.

Recover the refrigerant from the unit.

101

CAPILLARY TUBE REPLACEMENT INSTRUCTIONS
Upright GDM/T-Series Equipment Continued.....
_________ STEP 4 __________
Remove all of the shelves.

_________ STEP 5 __________

________ STEP 12__________
Place the cap tube suction line assembly in the cabinet.

________ STEP 21__________
Pull a vacuum on the unit.

________ STEP 13__________

NOTE:
The use of a micron gauge
is recommended.

These are in freezers models only.

Take the accumulator and hold it up
inside the cabinet and mark the suction line where it needs to be cut.
You may have to cut some of the line
coming from the accumulator.

_________ STEP 6 __________

________ STEP 14__________

Remove the wire back guards on the
back wall of the cabinet.

NOTE:

Disconnect the evaporator drain line.

_________ STEP 7 __________
Drop down the evaporator housing by
removing the 1/4”screws that hold it
in place. Remove the temperature
control wires and allow the assembly
to hang down on the right side of
cabinet.

________ STEP 22__________
Reassemble the evaporator section.

CUT

Remove the suction line and cut it.
Using a 90° _” copper elbow, join
and soder the suction line and the
accumulator.

NOTE:
This step is easier to
preform outside of the cabinet.
See Figure 2.

________ STEP 15__________
_________ STEP 8 __________
Locate the two 1/4”screws that hold
the left side evaporator up and
remove them.

_________ STEP 9 __________
Un-solder the capillary tube from the
evaporator. NOTE: The use of a
heat shield is recommended.

________ STEP 10__________
Un-solder the accumulator from the
Evaporator and the suction line.
After the old suction lines cools down
you can crimp it closed.

NOTE:
The use of a heat shield is
recommended.

________ STEP 11__________
Drill a 5/8” hole in the floor as close
to the Left rear corner of the cabinet
as possible. See Figure 1.

Insulate the suction line where the
line come out under the cabinet.

________ STEP 16__________
Place the cap tube suction line with
the accumulator inside the cabinet.

________ STEP 17__________
Soder the capillary tube in to the
evaporator as well as the accumulator to the evaporator.

________ STEP 18__________
Solder the suction line down where
the suction line meets with the below
compressor pull out.

________ STEP 19__________
Solder the cap tube to the into the
copper line that goes into the outlet of
liquid line filter drier.

Figure 2.

________ STEP 23__________
Check the cabinet operation.

________ STEP 24__________
Place the cover over the new cap tube
suction line assembly and secure it to
the back wall using
several small sheet metal screws or
pop rivets.

________ STEP 25__________
________ STEP 20__________
Pressurize the system using nitrogen
to leak check. If a leak is found,
repair the leak and repeat this step.

102

Place the back guards back in the
unit.

________ STEP 26__________
Finish reassembling the cabinet.

REFRIGERATION TROUBLESHOOTING CHART
Refrigerator
REFRIGERATION TROUBLESHOOTING CHART
(REFRIGERATOR)
PROBLEM

Cabinet is running warm.

1. Are lights and evaporator fan working?
NO Check to make sure cabinet is plugged in, check to make sure circuit breaker is not tripped, check to see
if temperature control is set on #5.
YES Remove the grill covering the condensing unit.
2. Is the condenser coil (looks like a car radiator) clean? If not clean this with a brush and either a vacuum
or condensed air. Wait and let the cabinet run with a clean coil and see if that solves problem.
(CONDENSER COILS SHOULD BE CLEANED MONTHLY)
3. Can you here the compressor and condenser fan motor running?
NO Check the voltage at the compressor receptacle. It should be 115 volts ±10%. Using a remote reading
thermometer, check the evaporator coil temperature. If the temperature control is set on #5 and the coil temperature is above 40 degrees the control should be closed calling for the compressor to run. If the coil temperature is above 40 degrees and the temperature control does not close.
A. remove the temperature control from the evaporator housing and either calibrate or replace control.
• Verify on yourwiring diagram but most models have a pink wire that is connected to the power cord
black wire in the electrical box. This feeds one side of the temperature control and the other pink
wire is connected to the other side of the control to bring power to the compressor receptacle when
the switch closes on a call for refrigeration.
YES Is the evaporator coil frozen? Check to see if temperature control is operating correctly. If the evaporator coil is not iced up and the compressor and condenser fan is running please install piercing valves on
both the suction and discharge process tubes.
1. If pressures are equalized (high suction pressure, low head pressure) and compressor is running low amp
draw, compressor has bad valves replace compressor.
2. If you have low suction pressure and low discharge pressure first check to make sure there are no kinks
in the compressor pullout or the suction line after doing this you have a few options.
A. Add a few ounces of refrigerant and see what happens.
B. Recover charge and weigh in correct amount of refrigerant.

103

REFRIGERATION TROUBLESHOOTING CHART
Refrigerator ...continued
If the pressures rose and the cabinet began to function correctly, the cabinet was low on charge. This
means that there is a leak in the refrigeration system that must be located. A technician can raise system
pressure up to 200 psi with nitrogen to aid in the leak search. (Remember that the foam insulation within the cabinet will make a leak detector sniffer type react.)
AFTER LEAK IS LOCATED IT IS VERY IMPORTANT THAT THE SYSTEM DRIER IS
CHANGED AND THAT A 200 MICRON VACUUM IS PULLED THROUGH BOTH THE HIGH
AND LOW SIDE ACCESS FITTINGS.
When leak is found recover refrigerant, at this time the technician may want to remove piercing valves and
solder on access valves to pull vacuum and recharge system. (After charging system both service valves
should removed from the system.)
If the head pressure rises but falls right back down after you stop adding gas and the suction pressure stays
low there may be a restriction in the system. Recover the charge and cut out the drier also cut about 1" off
of the capillary tube. Circulate nitrogen through the system to clear any restrictions in the evaporator.
Evacuate the system and recharge.
If the problem still exists capillary tube may need to be replaced.

104

REFRIGERATION TROUBLESHOOTING CHART
Freezer

REFRIGERATION TROUBLESHOOTING CHART
(FREEZER)
PROBLEM Cabinet is running warm.
Can you hear the compressor running?
NO If nothing is running and cabinet is warm check to make sure cabinet is plugged in and then check circuit
breaker. GDM cabinet lights will not come on until cabinet reaches 20 degrees but on T series cabinets lights
will work when you open the door at any temperature. All freezers have a fan delay that will not allow the
evaporator fans to start before the coil gets to 15 degrees.
Remove the grill covering the condensing unit. Check the defrost timer to see if cabinet is in defrost. Do not
turn dial on defrost timer, take a pencil and mark a spot on the outer dial and watch this to see if timer is
working. This should take no more than 10 minutes to verify. While waiting, look to see if the condenser coil
(looks like a car radiator) is clean. If coil is dirty clean with a brush and a vacuum or compressed air.
(CONDENSER COILS SHOULD BE CLEANED MONTHLY)
If cabinet is not in defrost and the compressor and condenser fan motor is not running, unplug the condensing
unit and check the voltage at the compressor receptacle. The voltage should be within 10% on a 115 volt
compressor and within 5% on a 208 /230 volt compressor.
Any voltage less than that unplug cabinet and remove the temperature control from the evaporator housing and
check out control. Control could be stuck open or be pitted due to low voltage or short cycling. Refer to
Temperature Control Change-Out Instructions, page 39-41.

• There is a wiring diagram on the back of the electrical box cover plate. Use this to help you
troubleshoot.
YES The compressor is running and cabinet is warm. Does the evaporator coil have an ice build up on it? If
so follow above directions on how to verify if timer is advancing. If it is manually turn timer and put freezer
into defrost to check defrost heaters.
After ice build up is gone restart cabinet if box starts to freeze properly cabinet may not have enough defrost
times. Set timer for 4 defrosts a day. You may also want to check out defrost heater voltage and amperage at
this time to verify that there is not a heater or voltage problem.
If the compressor is running and there is no ice build up on the evaporator coil, install gauges on the suction
and discharge side of the system and check the system operating pressures.

105

REFRIGERATION TROUBLESHOOTING CHART
Freezer ...Continued
1. If compressor is running and you have a low amp draw with a high suction pressure and a low head pressure
your compressor has bad valves replace compressor.
2. If you have a low suction pressure and a low head pressure you may have one of a few different things
happening with your system.
A. Kinks in the suction line or compressor pullout.
1. Check for kinks and repair tubing if needed.
B. CRO valve not functioning correctly.
1. Install a line tap in suction line to verify pressure upstream of valve, replace valve if needed.
C. Evaporator or accumulator may be logged with oil.
1. Disconnect termination switch from timer and run system through an extended defrost cycle to
warm oil and get it to return to the compressor after putting back in freeze cycle.
2. Allow evaporator to warm up and remove capillary tube from evaporator then blow nitrogen
through evaporator. You may also want to poke a hole in the accumulator with a scratch awl to add
in the oil removal.
D. You may also have a system that is low on refrigerant charge or have a capillary tube or drier that is
restricting refrigerant flow.
1. Add a few ounces of refrigerant to system.
2. Recover the charge and weigh in the correct amount of refrigerant.
With either of these options used if the pressures rise and the cabinet begins to function correctly we
know that the cabinet was low on charge. This means that there is a leak in the refrigeration system
that now must be located. A technician can raise the system pressure up to 200 psi with nitrogen to aid
in the leak search. Remember that the foam itself will make a leak detector (sniffer type) react.
AFTER LEAK IS LOCATED IT IS VERY IMPORTANT THAT THE SYSTEM DRIER IS
CHANGED AND THAT A 200 MICRON VACUUM IS PULLED THROUGH BOTH THE HIGH
AND LOW SIDE ACCESS FITTINGS.
When leak is located recover refrigerant, at this time the technician may want to remove any line taps they
might have installed and solder on access fittings to pull the vacuum and recharge the system. (After charging
the system both of the access valves must be removed from the system.)
If the head pressure falls right back down after you stop adding refrigerant and the suction pressure stays low
there may be a restriction in the system Recover refrigerant and cut out the drier along with about 1 " of the
capillary tube. Circulate nitrogen through the system to clear any restrictions in the evaporator. Evacuate the
system and recharge.
If the problem still exists the capillary tube may need to be replaced.

106

CAPILLARY TUBE REPLACEMENT INSTRUCTIONS
Refrigerators and Freezers

Depending on what model; cabinet you may have you will always have a couple of options when it comes
to replacing the capillary tube.
REFRIGERATORS
Some model cabinets for example GDM slide door cabinets have capillary tube/suction line assembly behind
the rear center shelf standard. These are easy to access and change. On refrigerator cabinets that do not have
a rear center shelf standard, here are you options.
1. You can run a new suction line/capillary tube assembly up the rear of the cabinet and drill a hole above
the evaporator housing to bring the tubing inside the cabinet to pipe back to the evaporator.
2. Cut the suction line a couple of inches below where it enters the cabinet also cut it a couple of inches
from the evaporator coil. Install new capillary tube inside of the existing suction line. Now use Tee’s to
reconnect suction line while feeding capillary tube out of the other side of the Tee.

FREEZERS
The above methods of replacing capillary tubes on refrigerators can also be used on freezers. There is also
one other option that is used only on freezers.
1. Drill a hole in the rear left hand corner through the floor on the inside of the cabinet, run the new
assembly up the rear left hand corner and reconnect to the evaporator. After re-piping cover the
assembly up with a corner cover that can be ordered from True’s parts department.
Remember that P.O.E. oil is now being used and it is very hygroscopic. You should only have the system
open for no more than 15 minutes and then replace drier and pull a 200-micron vacuum through both sides
of the system.

107

FIELD TROUBLESHOOTING
IF THE COMPRESSOR WILL NOT
RUN
1. If there is no voltage at the compressor
terminals, follow the wiring diagram
and check back from compressor to
the power supply to find where the circuit is interrupted.
2. If power is available at the compressor
terminals, and the compressor does
not run, check the voltage at the compressor terminals while attempting to
start the compressor.
If voltage at the compressor terminals
is below 90% of the nameplate voltage, it is possible the motor may not
develop sufficient torque to start.
Check to determine if wire sizes are
adequate, electrical connections are
loose, the circuit is overloaded, or if
the power supply is inadequate.
3. On single phase compressors, a defective capacitor or relay may prevent the
compressor starting. If the compressor attempts to start but is unable to do
so, or if there is a humming sound,
check the relay to see if the relay contacts are damaged or fused. The relay
points should be closed during the initial starting cycle, but should open as
the compressor comes up to speed.

Make sure capacitors are discharged
before checking. Check for continuity
between each capacitor terminal and
the case. Continuity indicates a short,
and the capacitor should be replaced.
Substitute a “known to be good” start
capacitor if available. If compressor
then starts and runs properly, replace
the original start capacitor.
If a capacitor tester is not available, an
ohmmeter may be used to check run
and start capacitors for shorts or open
circuits. Use an ohmmeter set to its
highest resistance scale, and connect
prods to capacitor terminals.
a) With a good capacitor, the indicator
should first move zero, and then gradually increase to infinity.
b) If there is no movement of the ohmmeter indicator, an open circuit is indicated.
c) If the ohmmeter indicator moves to
zero, and remains there or on a low
resistance reading, a short circuit is
indicated.
Defective capacitors
should be replaced.

Remove the wires from the starting
relay and capacitors. Use a high voltage ohmmeter to check for continuity
throughout the relay coil. Replace the
relay if there is not continuity. Use an
ohmmeter to check across the relay
contacts. Potential relay contacts are
normally closed when the relay is not
energized, current relay contacts are
normally open. If either gives an
incorrect reading, replace the relay.

4. If the correct voltage is available at the
compressor terminals, and no current
is drawn, remove all wires from the
terminals and check for continuity
through the motor windings. On single phase motor compressors, check
for continuity from terminals C to R,
and C to S. On compressors with line
break inherent protectors, an open
overload protector can cause a lack of
continuity. If the compressor is warm,
wait one hour for the compressor to
cool and recheck. If continuity cannot
be established through all motor windings, the compressor should be
replaced.

Any capacitor found to be bulging, leaking, or damaged should be replaced.

Check the motor for ground by means
of a continuity check between the

108

common terminal and the compressor
shell. If there is a ground, replace the
compressor.
5. If the compressor has an external protector, check for continuity through
the protector or protectors.
All external inherent protectors on
compressors can be replaced in the
field.
IF THE MOTOR COMPRESSOR
STARTS BUT TRIPS REPEATEDLY
ON THE OVERLOAD PROTECTOR
1. Check the compressor suction and discharge pressures while the compressor
is operating. Be sure the pressures are
within the limitations of the compressor. If pressures are excessive it may
be necessary to clean the condenser,
purge air from the system, replace
crankcase pressure regulating valve.
An excessively low suction pressure
may indicate a loss of charge.
On units with no service gauge parts
where pressures can be checked,
check condenser to be sure it is clean
and fan is running. Excessive temperatures on suction and discharge line
may also indicate abnormal operating
conditions.
2. Check the line voltage at the motor
terminals while the compressor is
operating. The voltage should be
within 10% of the nameplate voltage
rating. If outside those limits, the
voltage supply must be brought within
the proper range, or a motor compressor with different electrical characteristics must be used.

FIELD TROUBLESHOOTING
3. Check the amperage drawn while the
compressor is operating. Under normal
operating conditions, the amperage
drawn will seldom exceed 110% of the
nameplate amperage. High amperage
can be caused by low damage, defective
running capacitors, or a defective starting
relay.
4. If all operating conditions are normal, the
voltage supply at the compressor terminals balanced and within limits, the compressor crankcase temperature within
normal limits, and the amperage drawn
within the specified range, the motor protector may be defective, and should be
replaced.
If the operating conditions are normal
and the compressor is running excessively hot for no observable reason, or if the
amperage drawn is above the normal
range and sufficient to repeatedly trip the
protector, the compressor has internal
damage and should be replaced.

IF THE COMPRESSOR RUNS BUT
WILL NOT REFRIGERATE
1. Check the refrigerant charge. Check the
evaporator surface to determine if it is
evenly cold throughout, or if partially
starved. A lack of charge may be indicated by light, fluffy frost at the evaporator inlet. Add refrigerant if necessary.
2. Check the compressor suction pressure.
An abnormally low pressure may indicate a loss of refrigerant charge, a malfunctioning capillary tube, a lack of
evaporator capacity possibly due to icing
or low air flow, or a restriction in the system.
Often a restriction in a drier or strainer
can be identified by frost or a decrease in
temperature across the restriction due to
the pressure drop in the line. This will be
true only if liquid refrigerant is in the line
at the restricted point, since any temperature change due to restriction would be
caused by the flashing of liquid into

vapor as the pressure changes.
Any abnormal restriction in the system
must be corrected.
3. Check the compressor discharge pressure.
An abnormally high discharge pressure
can cause a loss of capacity, and can be
caused by a dirty condenser, a malfunctioning condenser fan, or air in the system.
4. If the suction pressure is high, and the
evaporator and condenser are functioning normally, check the compressor
amperage draw. An amperage draw near
or above the nameplate rating indicates
normal compressor or unit may have
damaged valves.
An amperage draw considerably below
the nameplate rating may indicate a broken suction reed or broken connecting
rod in the compressor.
DIAGNOSIS AND REPLACEMENT OF
FREEZER CABINET COMPONENTS
1. Defrost Time Clock
A. Check timer motor to be sure it runs.
B. Check contacts on the defrost timer.
C. Check solenoid windings for continuity to ensure contact switching.
D. Check to be sure defrost actuator pins
are in proper position.
E. Check all wires in the timer for tightness to terminals and broken wires.

2. Defrost Control On The E v a p o r a t o r
Drain Pan
A. If the defrost time is always 35 minutes (or whatever duration the
elapsed time adjustment is set at)
and the fan motors do not delay after
a defrost cycle and it has been determined that the solenoid in the defrost
clock is functioning, change the
defrost control in the evaporator
compartment in the top of the freezer. This control is attached to the
evaporator drain pan.

109

3. Coil Defrost Heater
A. Lower the evaporator cover.
Disconnect the coil heater by removing the wire nuts at the point where
the heater joins the electrical circuit
of the freezer in the evaporator compartment. Check heater for continuity with an ohmmeter. If the heater is
defective, cut the bale wires holding
the heater to the coil and remove the
heater. Replace with a new heater
using bale wires provided.
4. Drain Tube Heater
A. Lower the evaporator cover.
Disconnect the drain tube heater by
removing the wire nuts at the point
where the heater joins the electrical
circuit of the freezer in the evaporator compartment. Check the drain
tube heater with an ohmmeter.
B. If the drain tube heater is defective,
disconnect the drain tube from the
rigid plastic drain, bend the tabs that
hold the evaporator drain pan to the
evaporator cover and raise the drain
pan so that the flexible heater is visible, pull heater out of the plastic
drain tube and replace. Connect
heater to the electrical circuit in the
evaporator compartment.

FIELD TROUBLESHOOTING
5. Cabinet Temperature Control
A. Remove the two screws on the right
side of the evaporator housing that
holds the control mounting plate.
Reach behind the evaporator housing
on the control side of the cabinet and
pull the control bulb out of the receptacle in the roof of the cabinet.
Disconnect the wires from the control.
Check control for continuity, replace if
defective.
6. Evaporator Fan Motor
A. Remove fan blade guard from the evaporator housing. Remove the blade.
Remove screws holding the evaporator
motor. Disconnect wires by removing
wire nuts.

FREEZER PERIMETER HEATER WIRE
REPLACEMENT
1.

Disconnect the power supply, unload
contents of cabinet and lay cabinet on
its back.

2.

Remove the lower louvered grill.
Remove the stainless steel skirt around
the louvered grill.

3.

Remove the sign or the louver section
above the door(s).

4.

Remove hinges and door(s).

5.

Drill out pop rivet on right top corner of
plastic and stainless steel mullion trim.
Remove horizontal top stainless steel
strip by sliding it to the right on the
tracks in the plastic. Be sure to raise
the corner of the plastic trim where the
pop rivet was removed so that the stainless trim slides beneath it. Drill out the
two pop rivets in the top plastic trim
which was hidden by the horizontal
piece of stainless trim.

7. C.R.O. Valve
A. Remove the refrigerant from the system
to an equalized 0 pounds pressure.
Remove securing strap holding the
valve to the condensing unit base.
Replace the valve. Evacuate the system to 100 microns and recharge the
system.
8.

Fan Door Switch (and lights on "T"
Models)
A. Pull switch downward out of the square
hole overriding the holding tabs.
Remove wires and replace the switch.

6.

Remove left and right vertical stainless
steel trim pieces by sliding them out of
the plastic trim. Be sure to raise the top
horizontal plastic trim piece so that the
stainless trim passes underneath it
toward the top of the cabinet.

110

7.

Drill out the pop rivet that was hidden
by the stainless steel trim in the lower
right corner of the vertical plastic
piece. Raise this corner of the vertical
plastic piece so that the lower vertical
stainless trim slides beneath it for
removal.

8.

Remove three (3) screws on each side
of the center mullion and raise mullion
out of the cabinet and slide the stainless
trim past the top of the cabinet.

9.

Disconnect heater wires in the junction
box, Remove heater wire loop by
unhooking at the corners where it is
retained by the plastic trim pieces.

10. Replace inoperative heater wire loop,
being sure to hook under the corners of
the plastic trim as observed during disassembly.
11.

Reverse assembly sequence to replace
trim. Use the four (4) small sheet metal
screws furnished with the heater wire
in the same sequence as the pop rivets
were removed.

12. Attach the heater wires to the power
supply in the junction box. Replace all
other assemblies in reverse sequence in
which they were removed.

TROUBLESHOOTING FLUORESCENT LIGHTING CIRCUITS
Electromagnetic Rapid Start, Instant Start Electronic, and Preheat
Fluorescent Light Circuits

WARNING:
A qualified service technician must be used to preform these tests using extreme care
because of the risk of electrocution if tests are not preformed correctly.
There are different types of lighting systems being used in True cabinets, so there will be different types of
troubleshooting techniques that need to be used. The one common aspect in all of the lighting circuits is that
the bulbs being used must be the same as the bulbs that were originally installed in the cabinet.
To test ballast determine which lighting system you are working on and follow steps below.

Electromagnetic rapid start fluorescent light circuit – There are three different voltage tests.
Incoming or ballast supply voltage- Test at black and white wires going to ballast. You should read
approximately 118 volts.
Filament voltage- Tested between red to red wires or blue to blue wires. Depending on which ballast you
have you should get a reading between 2 and 5 volts with the bulbs out. Please call technical service with the
ballast number to get the correct voltage reading.
High voltage- Test between either red wire and either blue wire. Again depending on which ballast you are
checking the voltage can range between 205 and 310 volts with the bulbs out. Please call technical service
with the ballast number for the correct voltage reading.
Instant start electronic fluorescent light circuit - (Note: A high impedance meter is required for testing
this ballast.). There are two different voltages to test.
Incoming or ballast supply voltage - Test at the black and white wires going to the ballast. You should read
approximately 118 volts.
High voltage - Test between the red wires and anyone of the blue wires with the bulbs out. You should read
approximately 600 volts (+ or - 10%).
Preheat fluorescent light circuit – Test voltage between pins on each end of the lamp. You should get
approximately 118 volts from one pin on one end to one pin on the other. You can also check for continuity
between the other pins on either end to the starter base. (To do this test make sure there is no voltage to the
circuit and remove the starter from the base.) If both are ok change the bulb first and then change the starter.
FOR ANY INFORMATION OR HELP DIAGNOSING BALLAST PROBLEMS PLEASE CALL.
TRUE MANUFACTURING TECHNICAL SERVICE
1-800-325-6152
Revised 9-24-02 SB
111

GDM & T SERIES COOLERS IDL CONNECTOR
Black
White

2 Door IDL Cooler Wiring
and Y cord on 3 door cabinet

Blue #1 on R.S. or 24K ballast
Yellow #1 on R.S. or Red on 24K ballast
Blue #2 on R.S. or Blue #1 on 24K ballast
Yellow #2 on R.S. or Red on 24K ballast
Red #1 on R.S. or Blue #2 on 24K ballast
Yellow #2 on R.S. or Red on 24K ballast
Red #2 on R.S. or Blue #2 on 24K ballast
Yellow #1 on R.S. or Red on 24K ballast

Red
Green

1
2
3
4
5
6
7
8
9

Green

Red
Pin 1 - Pigtail black to door black (upper lamp holder)
Pin 2 - Pigtail white to door white (lower lamp holder)
Pin 3 - Pigtail red to door red (heaters)
Pin 4 - Pigtail green to door black (upper lamp holder)
Pin 5 - Pigtail brown to door white (lower lamp holder)
Pin 7 - Pigtail blue to door blue (heaters)
˚1
˚2
˚3

˚4
˚5
•6

˚7
˚8
˚9

White
Black

1
2
3
4
5
6
7
8
9

9
8
7
6
5
4
3
2
1

Black
White

Lamp Interior

Black
White

White

Black
White
Black

Lamp Interior

Femaile plug for door cord.

Black
White
Red
Green
Brown

2 Door IDL Freezer Wiring
and Y cord on 3 door cabinet
Yellow on VHO or Red on 24K ballast
Blue #1 on VHO or 24K ballast
Black from Org/Blk in harness
Yellow on VHO or Red on 24K ballast
Blue #2 on VHO or Blue #1 from 24K ballast
Red #1 on VHO or Blue #2 on 24K ballast
White from neutral Bundle
Red #2 on VHO or Blue #2 on 24K ballast

1
2
3
4
5
6
7
8
9

112

Blue

1
2
3
4
5
6
7
8
9

9
8
Blue 7
6
Brown
5
Green 4
Red
3
White 2
Black 1

Black
White
Red
Black
White

Lamp Interior

Door Frame Heater
Blue
Door Glass Heater

Door Frame Heater
Blue
White
Black
Red
White
Black

Door Glass Heater

Lamp Interior

Notes

EQUIPMENT
CARE AND
CLEANING

114

EQUIPMENT CARE AND CLEANING
Cleaning Your Cabinet

Cleaning Your Cabinet
Cleaning Exterior, Vinyl Clad, Galvanized, and Aluminum interior of cabinet:
True recommends the use of soap and warm water to clean these parts of the cabinet.
Warning: Use of abrasive or chlorine based cleaners will damage your cabinet.

115

STAINLESS STEEL EQUIPMENT CARE AND CLEANING
NAFEM - North American Association of Food Equipment Manufacturers

STAINLESS STEEL
EQUIPMENT CARE
AND CLEANING

NAFEM
North American Association of Food
Equipment Manufacturers

116

STAINLESS STEEL EQUIPMENT CARE AND CLEANING
NAFEM - North American Association of Food Equipment Manufacturers

So, what does all this mean?

your present cleaner contains chlorides, ask if
they have an alternative. They probably will.
Also, avoid cleaners containing quaternary salts
as they also can attack stainless steel and cause
pitting and rusting.

At this very moment you're gritting your teeth and
saying,
"Well, what am I supposed to do now? The only way
to get that crusted lasagna off my stainless steel is to
use some kind of scouring pad, and I certainly need
to use a cleaner, and the water in this town is hard
enough to cut diamonds."

4. Treat your water
Though this is not always practical, softening
hard water can do much to reduce deposits. There
are certain filters that can be installed to remove
distasteful and corrosive elements. Salts in a
properly maintained water softener are your
friend. If you are not sure of the proper water
treatment, call a treatment specialist.

Don't Despair!
Here are a few steps that can help prevent stainless
steel rust.
1. Use the proper tools
When cleaning your stainless steel products, take
care to use non-abrasive tools. Soft cloths and
plastic scouring pads will not harm the steels passive layer. Stainless steel pads can also be used
but the scrubbing motion must be in the direction
of the manufacturers' polishing marks. (Step 2 tells

5. Keep your food equipment clean
Use alkaline, alkaline chlorinated or non-chloride cleaners at recommended strength. Clean
frequently to avoid build-up of hard, stubborn
stains. If you boil water in your stainless steel
equipment, remember the single most likely
cause of damage is chlorides in the water.
Heating cleaners that contain chlorides has a
similar effect.

you how to find the polishing marks).

2. Clean with the polish lines
Some stainless steels come with visible polishing
lines or "grain." When visible lines are present,
you should always scrub in a motion that is parallel to them. When the grain cannot be seen, play it
safe and use a soft cloth or plastic scouring pad.

DON'T USE
Steel Pads
Wire Brushes
Scraper

3. Use alkaline, alkaline chlorinated or non-chloride containing cleaners
While many traditional cleaners are loaded with
chlorides, the industry is providing an ever
increasing choice of non-chloride cleaners. If you
are not sure of your cleaner's chloride content
contact your cleaner supplier. If they tell you that

117

STAINLESS STEEL EQUIPMENT CARE AND CLEANING
NAFEM - North American Association of Food Equipment Manufacturers
7. Never use hydrochloric acid (muriatic acid)
on stainless steel

6. Rinse, Rinse, Rinse
If chlorinated cleaners are used you must rinse,
rinse, rinse and wipe dry immediately. The
sooner you wipe off standing
water, especially when it contains cleaning
agents, the better. After wiping the equipment
down, allow it to air dry for the oxygen helps
maintain the stainless steels' passivity film.

8. Regularly restore / passivate stainless steel

Recommended cleaners for specific situations
Job

Cleaning Agent

Comments

Routine cleaning

Soap, ammonia, detergent
Medallion

Apply with cloth or sponge

Fingerprints
& smears

Arcal 20, Lac-O-Nu
Ecoshine

Provides barrier film

Stubborn stains
& discoloration

Cameo, Talc, Zud
First Impression

Rub in direction
of polish lines

Grease & fatty acids,
blood, burnt-on foods

Easy-off, DeGrease It
Oven Aid

Excellent removal
on all finishes

Grease & oil

Any good commercial
detergent

Apply with sponge
or cloth

Restoration/
Passivation

Benefit, Super Sheen

118

STAINLESS STEEL EQUIPMENT CARE AND CLEANING
NAFEM - North American Association of Food Equipment Manufacturers

What does Corroded Stainless
Steel Look Like?

Contrary to popular belief,
Stainless Steels ARE
susceptible to rusting

Passive Film Breakdown

Corrosion on metals is everywhere. We recognize
it quickly on iron and steel as unsightly yellow /
orange rust. Such metals are called "active"
because they actively corrode in the natural environment.
Stainless steels are passive metals because they
contain other metals, like chromium and nickel. 400
series stainless steels contain chromium while 300
series contain both chromium and nickel.
Metals are crystalline solids made up in atom
arrangements like tinker toys. With 12-30%
chromium, an invisible passive film covers the
steels surface acting as a shield against corrosion.
The metal becomes "passive" toward corrosion.

If the passive film of your stainless steel has been
broken, your equipment will begin the long walk
down the dark road of corrosion. At it's end; rust.
The first signs are on the microscopic level. If you
were to look at them under a microscope or through
a magnifying glass, you would see small pits and
cracks staring back at you. Given time, these pits
and cracks will grow and deepen while all the time
exuding unsightly, red-orange rust.
More severe and visible cracking can also take
place.

As long as the film is intact; not broken or contaminated, the metal is passive and stainless.

119

STAINLESS STEEL EQUIPMENT CARE AND CLEANING
NAFEM - North American Association of Food Equipment Manufacturers

Review

Enemies of Stainless Steel
There are three basic things which can break down
your stainless steels passivity layer and allow corrosion to rear its ugly head.

1. Stainless steels do rust when: Passivity (filmshield) breaks down by scrapes or scratches by
deposits and chlorides.

1. Mechanical abrasion

2. Stainless steel rust starts with pits and cracks.

2. Deposits & Water

3. Use the proper tools. Do not use steel pads, wire
brushes or scraper. (Step 1)

3. Chlorides

4. Use non-chlorinated cleaners at recommended
concentrations. Use only chloride free cleaners.
(Step 3)

Mechanical abrasion means those things that will
scratch the surface. Steel pads, wire brushes, and
scraper are prime examples.

5. Soften your water. Know the hardness of your
water. Use filters and softeners whenever possible. (Step 4)

Water comes out of our tap in varying degrees of
hardness. Depending on what part of the country
you live in, you may have hard or soft water. Hard
water may leave spots. Also, when heated, hard
water leaves deposits behind that if left to sit, will
break down the passive layer and rust your stainless
steel. Other deposits from food preparation and
service must be properly removed.

6. Wipe off cleaning agent(s) and standing water
ASAP. Prolonged contact will cause eventual
problems. (Step 6)
To learn more about chloride-stress corrosion and
how to prevent it, contact the manufacturer of your
equipment, your cleaning materials supplier or
NAFEM.

Chlorides are found nearly everywhere. They are in
water, food, and table salt. One of the worst perpetrator of chlorides can come from household and
industrial cleaners.

NAFEM
N. American Association of Food
Equipment Manufacturers
401 N. Michigan Avenue
Chicago, Illinois 60611-4267
(312.644.6610) E-mail: [email protected]_sba.com
Developed for NAFEM by
an independent testing laboratory,
Packer Engineering of Naperville, Illinois

120

Notes



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