Marley 1500 Series Bearing Assembly User Manual 98 1383A w Marley AN SPX BRAND Components 1 Shaft 2 Fan Key set screw torque 3 Sheave key 5 5 ft lb 7 8 N f im 4 Bearing 2 required set screw torque 5 5 ft lb 7 8 N m Installation Installation should only be performed by Bearing Replacement Bearings should only be a qualified technician Lockout and disable any system replaced by a qualified technician Replace a bearing drivers Coat t
USER MANUAL 800 class mechanical draft cooling tower OPERATION MAINTENANCE ee aie f aaa aa kc A Aa sper eg PT gp a bak 5 gt Marley A Warning A Caution Note contents The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information conc
Aquatower User Manual OM 3800 4800B Marley Manual 92 1311G A Warning N Note A Note Contents Tower Installation 2 oce ome Hee HE D as 3 PIPING tO TOWO 2 de cte eee 4 Mechanical Equipment Installation 5 Motor Electrical Connections 8 Starting and Operating Instructions 9 Maintenance Instructions
Marley Can Do Control Panel User Manual 03 171B aM Marley Note AN Warning Note Contents This manual contains vital information forthe proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow all instructions Save this manual for future reference Donita ERES 3 SELEN EE 3 Field Installed Systems Single Speed 4 Field Installed Systems
Class 1000 User Manual Marley A Warning N Caution A Note Note The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product Indicates presence of a hazard which can cause severe personal injury death or substantial property damage if ignored Indicates presence of a hazard which will or can cause personal injury or property d
Marley Class 600 Cooling Tower User Manual 92 1317C aM Marley Tower Schematic AIR FLOW FAN FLOW CONTROL VALVE FLOW CONTROL VALVE DISTRIBUTION BASIN WATER INLET FILL AIR s 2 AIR FLOW FLOW DRIFT ELIMINATORS COLLECTION BASIN A Warning A Caution Note Contents Ge efaksudsezawaaaudewiaRa kawaii aaa A ai R ARR SAY EA 4 Bei re Stam Up wats tistics eda eters ida iii aid 4 Initial Starting Procedure 2 uu
Marley Class 800 Mechanical Draft Cooling Tower f User Manual 95 1356A uM Marley A Warning A Caution Note Notice The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product Indicates presence of a hazard which can cause severe personal injury death or substantial property damage if ignored Indicates presence of a hazard whic
Comp DS Driveshaft User Manual 2010 1378B gt Marley Note Driveshaft Parts List Figure 1 1 0 Complete Driveshaft 1 1 Tube and Flange Assembly 1 2 Coupling Assembly 2 required per driveshaft complete with hub flexible element cap screws washers lock nuts and set screws 1 21 Hub Assembly A Hub B Cap Screws 8 required per hub C Set Screws 2 required per hub 1 22 Flexible Element Assembly A Flexible Element B Cap Screws 4 required per fl
Marley Basic Control System User Manual 92 1320E M Marley N Warning This manual contains vital information for the proper installation and operation of your cooling tower and the basic control system Carefully read the manual before installation or operation of the tower Failure to follow the instructions in this manual may result in substantial personal injury or death Save this manual for future reference Table of Contents oilo
Marley Geareducer Model 34 4 and 3400 User Manual 01 1162B Operation and Service Instructions Protection Against Corrosion As shipped a Marley Geareducer is protected internally against corrosion with machine enamel on unmachined parts and with rust proofing oil and grease on machined surfaces These coatings normally protect the Geareducer against atmospheric corrosion for storage periods up to six months However if oil is added to the Geareducer it will dissolve
Marley Multicell Motor Sequencer User Manual 00 1177 Cooling Technologies Balcke Hamon Dry Cooling Marley Warning Installation Introduction The Marley 6 and 12 stage Multicell Motor Sequencers are designed to control multiple cell cooling towers in such a way that required cooling will be done with maximum efficiency and minimum wear to cooling tower mechanical equipment Temperature is monitored at a common return line and fans are turned on as neede
File E37116 Electric Baseboard Heaters 1800 2500 Cl 800 amp C2500 Series Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heat
File E37116 Electric Baseboard Heaters 1800 2500 Cl 800 amp C2500 Series Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heat
MODEL NO 402A 482A amp 562A Portable Unit Heaters 482A amp 562A t PLUG TYPE 30 amp 240 V NEMA 6 30P 402A PLUG TYPE 20 amp 240 V NEMA 6 20P Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read and follow the installa
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGFIT models listed in these instructions are intended for use in bathrooms However they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGFIT models listed in these instructions are intended for use in bathrooms However they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
READ AND SAVE THESE INSTRUCTIONS MODELS 761 763 765 7100 7130 7150 8090 amp 8100 FANS MODELS 768IC 770IC 7100L 7150L 7100FL 7150FL 8090L amp 8100L FAN LIGHTS MODELS 7100H 7100FLH 7150H amp 7150FLH FANS amp FAN LIGHTS with HUMIDITY SENSOR DESCRIPTION The FAN and FAN LIGHT models listed in these instructions are intended for use in bathrooms Flowever they can also be used in other areas where ventilation is required These units are approved for installat
Marley Engineered Products w An SPX Company 994 Series Ceiling Fans I A B Inspect contents of carton for possible shipping and handling damage The blades are a carefully matched set If one or more blades from a carton has been damaged arrange to have all the blades replaced BLADES ARE PACKED AS A MATCHED SET AT THE FACTORY IN ORDER TO ENSURE SMOOTH FAN OPERATION If more than one fan is being installed be careful to attach blades removed from one carton to
XI A Division of Marley Engineered Products FILE E21609 SRA DS Series Model B Fan Forced Wall Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance directions shown in this manual You should
File E37116 Electric Baseboard Heaters 1800 2500 Cl 800 amp C2500 Series Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heat
File E37116 Electric Baseboard Heaters 1800 2500 Cl 800 amp C2500 Series Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heat
Marley Package Products As a cooling industry leader in the green movement SPX Cooling Technologies provides the highest quality evaporative cooling towers fluid coolers and evaporative condensers to deliver systems and water saving strategies to help achieve your sustainable building goals Cooling Towers Marley NC Class Cooling Tower The flagship product of the Marley Package line comes with the most available options Factory assembly is standard and the NC is av
Electric Hydronic Baseboard Heaters Model D c V us FILE E37116 Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industiy Please carefully read and follow the installation and maintenance directions shown in this manual You should enjoy years of efficient he
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
MsrlfiV Curtains Engineered ProduoteiP INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY IN
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Heated Air Curtains INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1325HFD E3609 1325HFD E3806 1325HFD E3809 1325HFD E4206 1325HFD E4209 1325HFD E4806 1325HFD E4809 1325HFD E6006 2325HFD E6009 2325HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL INJURY AND OR PROPER
M rgpu Heated Air Curtains Engineered Products w INSTALLATION amp OPERATING INSTRUCTIONS amp PARTS MANUAL MODELS E3606 1125HFD E3609 1125HFD E3612 1125HFD E3806 1125HFD E3809 1125HFD E3812 1125HFD E4206 1125HFD E4209 1125HFD E4212 1125HFD E4806 1125HFD E4809 1125HFD E4812 1125HFD E6006 2125HFD E6009 2125HFD E6012 2125HFD READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE INSTALL OPERATE OR MAINTAIN THE PRODUCT DESCRIBED PROTECT YOURSELF AND OTHERS BY OBSERVING ALL
Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance directions shown in this manual You should enjoy years of efficient heating comfort with this product from Marley Engineered Products the industry s le
Marley Package Products As a cooling industry leader in the green movement SPX Cooling Technologies provides the highest quality evaporative cooling towers fluid coolers and evaporative condensers to deliver systems and water saving strategies to help achieve your sustainable building goals Cooling Towers Marley NC Class Cooling Tower The flagship product of the Marley Package line comes with the most available options Factory assembly is standard and the NC is av
L Series Hand Carry Portable Radiant Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater by Marley Engineered Products You have made a wise investment select ing the highest quality product in the heating industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heating comfort with this product from Marley Engineered Products
M Series Fixed Overhead Radiant Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater by Marley Engineered Products You have made a wise invest ment selecting the highest quality product in the heating industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heating comfort with this product from Marley Engineered Products the
IMPORTANT INSTRUCTIONS A WARNING TO REDUCE THE RISK OF PERSONAL INJURY OR ELECTRIC SHOCK When using electrical appliances basic precautions should always be followed to reduce the risk of fire electrical shock and personal injury 1 Read all instructions before using this heater 2 This heater is hot when in use To avoid burns do not let bare skin touch hot surfaces Always use handle when moving heater Keep combustibles such as electrical cords furniture p
MODEL NO PH4AB Portable Unit Heater Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by Marley Engineered Products You have made a wise investment selecting the highest quality product in the heating indus try Please carefully read the installation and maintenance directions shown in this manual You should enjoy years of efficient heating comfort with this product from Marley Engineered Product
MODEL NO 402A 482A amp 562A Portable Unit Heaters 482A amp 562A t PLUG TYPE 30 amp 240 V NEMA 6 30P 402A PLUG TYPE 20 amp 240 V NEMA 6 20P Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read and follow the installa
MODEL NO 402A 482A amp 562A Portable Unit Heaters 482A amp 562A F PLUG TYPE 30 amp 240 V NEMA 6 30P 402A PLUG TYPE 20 amp 240 V NEMA 6 20P Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read and follow the insta
c V us E152700 Radiant Heater Desk Heater 200 Series Installation amp Maintenance Instructions When using electrical appliances basic precautions should always be followed to reduce the risk of fire electric shock and Injury to persons Including the fol lowing CAUTION TO REDUCE RISK OF FIRE AND ELECTRIC SHOCK 1 Read all Instructions before using this heater 2 This heater Is hot when In use To avoid bums do not let bare skin touch hot surfaces Do n
RADIANT PLUG IN HEATERS MODEL NO VOLTS WATTS AMPS BTU HR FRR10512B 120 500 4 2 1706 Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by Marley Engineered Products You have made a wise investment selecting the highest quality product in the heating industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of effic
0 Marley Engineered Products W RK Series Infrared Heaters C US FILE E21609 Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient
XI A Division of Marley Engineered Products FILE E21609 SRA DS Series Model B Fan Forced Wall Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance directions shown in this manual You should
XI A Division of Marley Engineered Products FILE E21609 SRA DS Series Model B Fan Forced Wall Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater manufactured by a division of Marley Engineered Products You have made a wise investment selecting the highest quality product in the heat ing industry Please carefully read the installation and maintenance directions shown in this manual You should
L Series Hand Carry Portable Radiant Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater by Marley Engineered Products You have made a wise investment select ing the highest quality product in the heating industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heating comfort with this product from Marley Engineered Products
L Series Hand Carry Portable Radiant Heaters Installation amp Maintenance Instructions Dear Owner Congratulations Thank you for purchasing this new heater by Marley Engineered Products You have made a wise investment select ing the highest quality product in the heating industry Please carefully read the installation and maintenance instructions shown in this manual You should enjoy years of efficient heating comfort with this product from Marley Engineered Products
Marley CoolBoost Pump Control Panel System User Manual 09 1367 gt Marley Introduction NEMA 4 fiberglass outdoor enclosure with the following features Hinged and lockable outer door Swing out dead front inner door Corrosion resistant enclosure Electrical Components External disconnect handle with padlocking provisions to meet lockout tag out safety requirements Main circuit breaker with thermal and magnetic overload protection Door
oOx WHERE IDEAS MEET INDUSTRY Geareducer model 32 2 INSTALLATION OPERATION MAINTENANCE M92 1436B ISSUED 4 2013 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT gt Marley operation and service PROTECTION AGAINST CORROSION As shipped a Marley Geareducer is protected against corrosion with machine enamel on unmachined parts and with rust proofing oil and grease on machined surfaces These coatings normally protectthe Gea
Matrix Multiflow Owners Manual A Warning A Caution A Note A Note Contents Before Start Up EE page 3 starting Giele TT page 4 Ee e EE page 4 Tower M intenanG crcr page 6 Water Treatment nnn nnnenenneeeneenenseeenenennseeneenenneeneenennne page 8 Spare PAS vases sce sien nde edentate ended eet gie lack dalen See aiat page 11 Seasonal Shutdown Instructions page 11 Cooling Tower Cleaning nnn eenen enenennnene vennen page 13 TMOUDIESNOOUNO EE p
Marley MC Fluid Cooler User Manual 07 1185D n Marley AN SPX BRAND Note A Warning A Caution Note Contents This manual contains vital information for the proper installation and operation of your fluid cooler Carefully read the manual before installation or operation of the fluid cooler and follow all instruc tions Save this manual for future reference Fuld Cooler LOCALNON suuin itt tf t atto pwa wa a an 5 Fluid Cooler Shipment
Marley MCW Cooling Tower User Manual 06 1310C n Marley AN SPX BRAND Note A Warning A Caution Note Contents This manual contains vitalinformation forthe proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow all instructions Save this manual for future reference QrevrgiEoreij t QS 5 Tower Shipment euenit retten ka Ek aka reri etai n
SIP gt lt WHERE IDEAS MEET INDUSTRY MD 5000 steel cooling tower INSTALLATION OPERATION MAINTENANCE M08 1616D ISSUED 9 2012 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT gt Marley Note A Warning A Caution Note contents This manual contains vital information forthe proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow a
Marley MH Fluid Cooler Pump User Manual 05 1109A SPX COOLING TECHNOLOGIES Note Caution Note Contents This manual contains vital information for the proper operation and maintenance of your Marley MH Fluid Cooler Pump Carefully read the manual before operation and follow all instructions Save this manual for future reference IMSS Tea To cziy hick ached nee tr nn era aaa nn esse ere STE SEER ES SENER STS ESS RED 3 Handling PAR EEN Een E T 3 SV A
MH Fluid Cooler User Manual 05 116F E Marley Note A Warning A Caution Note Contents This manual contains vital information for the proper installation and operation of your fluid cooler Carefully read the manual before installation or operation of the fluid cooler and follow all instruc tions Save this manual for future reference Fluid Cooler Locat js gua sipssa sessao seed sogra lagoa adiane Gatanianiats 5 Fluid Cooler Shipmenta aacueisseriscsosisesaid
modulus Marley Manual 01 1196 y Beyond Cool A Note A Warning A Caution A Note A Note Contents The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product Indicates presence of a hazard whichcan causesevere personal injury death or substantial property damage if ignored Indicates presence of a hazard which will or can cau
Marley MW Fan User Manual 01 1264A Marley Caution Caution Installation Bushing Installation 1 Using clean dry cloth remove any dirt lubricant or sediment from the bore the bushing taper and the tapered fan hub Do not use any lubricant or thread locking compound dur ing installation The use of such products will cause improper bolt torque and will crack the fan hub 2 51 the bushing into the tapered bore of the fan hub Do not
WHERE IDEAS MEET INDUSTRY NC alpha cooling tower INSTALLATION OPERATION MAINTENANCE M2010 196A ISSUED 9 2012 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT gt Marley Note A Warning A Caution Note contents This manual contains vital information forthe proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow all instructions
MINCserIEs OM NC2 A Marley Manual 92 1327F A Note A Warning A Caution A Note Contents This manual contains vital information for the proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow all instructions Save this manual for future reference TOWer LOGALIOM hss iies ssid oegt asa A EEE A nee ahaa esaeds 4 Tower SHipMentt cccccccecceescceeeeseceeesaeeeeeeeeeeea
Him Primus User Manual Models P11 through P15 Marley Manual 04 131 Beyond Cool N Note A Warning N Caution A Note Contents This manual contains vital information for the proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow all instructions Save this manual for future reference Tower LOoCatlOn sicut abus T 4 Towe
Quadraflow cooling tower INSTALLATION OPERATION MAINTENANCE M92 1333 ISSUED 9 2012 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT SZ Cr gt Marley Note A Warning A Caution Note contents This manual contains vital information forthe proper installation and operation of your cooling tower Carefully read the manual before installation or operation of the tower and follow all instructions Save th
WHERE IDEAS MEET INDUSTRY driveshaft series 6Q 175 250 INSTALLATION OPERATION MAINTENANCE M92 1442B ISSUED 4 2013 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT gt Marley Figure 1 Series 250 shown Note driveshaft parts list 1 0 1 1 1 2 1 3 1 4 1 5 A BALANCE HARDWARE Complete driveshaft assembly Tube and flange assembly Geareducer yoke assembly with set screw Motor yoke assembl
Marley Ultra Low Noise Fan User Manual 07 1126 SPX COOLING TECHNOLOGIES Contents General Information 4 a 5 Operati Oesia nes 11 M intenaN an a nn 13 PATES LISE neue 16 TOUS SIGN cae neuen 17 General Information Description The Marley Ultra Low Noise series of fans represent the top in the new generation of super low noise fans the FRP blades hav
eX WHERE IDEAS MEET INDUSTRY Marleu Ultra Quiet Fan DESIGNED FOR INDUCED DRAFT COOLING TOWER APPLICATIONS M2012 1165 ISSUED 8 2012 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT gt Marley A Warning safety and handling considerations Safety Because of the potential for property damage and or danger to person s it is critical to follow the proper selection installation and operating procedures Exposed rotating dev
Ceramic Unilite Cooling Tower User Manual 09 1496 Ceramic AN SPX BRAND A Warning A Caution Note Note Contents The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product Indicates presence of a hazard which can cause severe personal injury death or substantial property damage if ignored Indicates presence of a
Marley Class W400 Cooling Tower User Manual 92 1312D aM Marley Tower Schematic MOTOR Fa PVC DRIFT CORRUGATED ELIMINATORS FRP CASING AIR INLET GUIDE ja IF REQD AIR FLOW ANCHORAGE CONCRETE BASIN TRANSVESE CROSS SECTION A Warning AN Caution Note Contents General ner dr ten ne 4 Before Stari passi dish een adds iv edie delesh der reres seri 4 Initial Starting de sisi 5 Routine Starting Procedure sisi 6 OP
Marley MD Cooling Tower Engineering Data amp Specifications COOLING TECHNOLOGIES Marley MD Cooling Tower Table of Contents Engineering Data Schematic 6 Support 22 Outlet Connection 24 Hoisting Info 25 Freeze Prevention 26 Water Quality 27 Specifications Base Base 28 Thermal Performance 28 Performance Warranty 28 Design Loading 29 Construction 29 Mechanical Equipment 29 Fill Louvers and Drift Eliminators 31 Hot Water Distribution
Marley NC Class Cooling Tower Quiet By Design SPX Cooling Technologies Balcke Hamon Dry Cooling Marley Four cell NC Class cooling tower serving a municipal power plant The Result of Sound Engineering The NC Class not only sets the benchmark for low sound levels it also sets the benchmark for some of the highest crossflow tonnage densities per box in the industry For over 50 years NC cooling towers have delivered thermal performance low
Marley MCW Cooling Tower COOLING TECHNOLOGIES The ideal solution for urban and industrial applications The new Marley MCW cooling tower from SPX Cooling Technologies is simply the most effective available today for sound and space sensitive applications Low noise Small footprint Indoor friendly Centrifugal fans and a Forced draft Because of its low noise fully enclosed falling water counterflow design small footprint with knock area cr
Marley MS CoolingTower COOLING TECHNOLOGIES SPX COOLING TECHNOLOGIES SPX Cooling Technologies has worldwide recognition as the pacesetter in the field of water cooling technology Unique within its industry in the scope of products and services offered we design and manufacture cooling towers of virtually any capacity and configuration More than 400 Marley tower models are available to service the application requirements of air conditioning i
Marley MC Fluid Cooler SPX Cooling Technologies Balcke Hamon Dry Cooling Marley Unmatched reliability Heavy duty construction high performance design and our five year mechanical warranty ensure consistent fully rated cooling over a wide range of flow and temperature requirements What every premium installation demands Reliability and performance When specifying components for high end applications they re t
Marley Ultra Low Noise Fan User Manual 07 1126 COOLING TECHNOLOGIES Contents General Information 4 Installation 5 Operation 11 Maintenance 13 Parts List 16 Trouble Shooting 17 3 General Information Description The Marley Ultra Low Noise series of fans represent the top in the new generation of super low noise fans the FRP blades have been developed to meet the most stringent noise limitations The fans permit variable pitch adjustmen