Marley Quadraflow cooling tower User Manual

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u s e r m a n u a l

Quadraflow

cooling tower

I N S TA L L AT I O N - O P E R AT I O N - M A I N T E N A N C E

s e a _ Z023 8 8 8 5_ D

I S S U E D 8/2 0 1 8

R E A D A N D U N D E R STA N D T H I S M A N UA L P R I O R TO O P E R AT I N G O R S E R V I C I N G T H I S P R O D U CT.

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Page 1 u s e r m a n u a l Quadraflow cooling tower ® I N S TA L L AT I O N - O P E R AT I O N - M A I N T E N A N C E s e a _ Z023 8 8 8 5_ D I S S U E D 8/2 0 1 8 R E A D A N D U N D E R STA N D T H I S M A N UA L P R I O R TO O P E R AT I N G O R S E R V I C I N G T H I S P R O D U CT.
Page 2: Table Of Contents
contents This manual contains vital information for the proper installation and Note 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. Overview ......................Tower Location ....................
Page 3: Overview
If you have questions about the adequacy of the available space and the intended configuration of the tower, please contact your Marley sales engineer for guidance.
Page 4: Tower Shipment
This will support your future recovery claim. Tower Assembly Your Marley sales representative is able to provide for the tower assembly by SPX’s construction division or through a qualified subcontractor. Our subcon- tractors provide safe, efficient assembly which complies with all requirements for five-year warranty protection of your tower by SPX.
Page 5 installation Do not start the motor more than four to five times per hour. Short Note cycling the tower will cause fuses, breakers or O.L.s to operate and will decrease motor life. When using a two-speed starter: • Motor rotation must be the same at slow speed and high speed. •...
Page 6 User Manual for that system. Most VFD problems can be avoided by purchasing the Marley drive system. If you are installing a VFD other than the Marley drive, please refer to that drives installation manual.
Page 7 installation If tower is equipped with a two-speed motor, check for proper rota- Caution tion at both speeds. Check also to see that starter is equipped with a 20-second time delay which prevents direct switching from high speed to low speed. This delay will allow the fan to slow down and will prevent abnormal stress from being applied to the mechanical equipment and the electrical circuit components.
Page 8 If your tower consists of two or more cells, cycling of motors may be shared between cells, increasing your steps of operation accordingly. For greater insight on cold water temperature control, please read Marley Technical Report #H-001-A , “Cooling Tower Energy and its Management”...
Page 9: Tower Startup
operation Tower Startup Microorganisms including Legionella bacteria can exist in premise Warning plumbing including cooling towers. The development of an effective water management plan (WMP) and implementation of maintenance procedures are essential to prevent the presence, dissemination and amplification of Legionella bacteria and other waterborne contami- nants throughout premise plumbing.
Page 10: Freezing Weather Operation
Resume the standard water treatment program, including biocidal treatment. Freezing Weather Operation The Marley fill system used in the Quadraflow has air entrance louvers that are molded as an integral part of the fill. This feature makes these towers very...
Page 11 operation It is the operator's responsibility to prevent the formation of destruc- Caution tive (hard) ice on the cooling tower fill. Certain guidelines should be followed: 1. Do not allow the tower’s leaving water temperature to drop below a mini- mum allowable level—say 2°C to 5°C.
Page 12 —and all exposed pipework—from freezing. Several methods are used to combat this, including automatic basin heater systems available from Marley. It is recommended that you discuss your freeze prevention options with your local Marley sales representative.
Page 13: Tower Maintenance
maintenance Water Quality and Blowdown Maintaining Water Quality: The materials used in the QuadraFlow tower are selected to offer long, corro- sion-free service in a “normal” cooling tower environment, defined as follows: • Circulating water with a pH between 6 and 8; a chloride content (as NaCl) below 750 mg/L;...
Page 14 For additional technical support, contact your Marley sales representative. References: ashrae.org. Search “ASHRAE Standard 188” and “ASHRAE Guideline 12. ”...
Page 15: Schedule Of Tower Maintenance
maintenance Schedule of Tower Maintenance: Included with this instruction packet are separate Service Manuals on each major operating component of the tower, and it is recommended that you read them thoroughly. Where discrepancies may exist, the separate Service Manuals will take precedence. Do not use the top horizontal surface of the tower as a working Warning platform.
Page 16 maintenance Inspect louvers, drift eliminators and basin trash screens and remove any debris or scale which may have accumulated. Replace any damaged or worn out components. Use of high-pressure water may damage the eliminator and louver material. Observe operation of the float valve. Depress the operating lever to make sure that the valve is operating freely.
Page 17 maintenance schedule Maintenance Service Monthly Semi-annually Seasonal Startup or Annually Inspect General Condition and Operation Observe Operation of: Mechanical–motor, fan and drive mechanism Makeup valve (if equipped) Inspect for unusual noise or vibration Inspect and Clean: Air inlet PVC drift eliminators Distribution basin, nozzles and collection basin Fan motor exterior Check:...
Page 18: Seasonal Shutdown Instructions
The motor should be operated for three hours at least once a month. This serves to dry out windings and lubricate bearing surfaces. Refer to Marley “Fan Motor” User Manual Z0239042 for additional information.
Page 19: Motor Relubrication Instructions
Contact your Marley sales representative if additional information is required. Prolonged Shutdown: If shutdown period is longer than seasonal, contact your Marley sales engineer for additional information.
Page 20: Additional Services
Additional Services SPX’s interest in your Marley QuadraFlow cooling tower does not end with the sale. Having conceived, designed, and manufactured the most reliable and longest lasting cooling tower of its class, we want to make sure that you gain the maximum possible benefit from its purchase.
Page 21: Additional Information
For complete parts and service assistance, contact the Marley sales or representative office in your area. If you need help locating the office nearest you, please phone 60 3 7947 7800 or check the...
Page 22: Troubleshooting
Too frequent starting or speed on/off or speed change set-points farther apart. Consider installing a changes Marley VFD for fine temperature control. Deterioration of grease or foreign Flush bearings and relubricate. Does not apply to motors with sealed material in grease bearings.
Page 23 Discuss remedy with Marley representative. Design wet-bulb temperature May have to increase tower size. Discuss remedy with Marley was too low representative. Cold-water temperature too Actual process load greater May have to increase tower size.
Page 24 Quadraflow U S E R M A N UA L SPX COOLING TECHNOLOGIES M A L AYS I A S d n B h d UNIT 505, BLOCK B, PHILEO DAMANSARA 2 sea_Z0238885_D ISSUED 8/2018 NO. 15 JALAN 16/11, OFF JALAN DAMANSARA ©...

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