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Geareducer (shutdown for 3 months or more).

1. If the motors have space heaters, operate mechanical equipment one hour 

each month.

2. If the motors do not have space heaters, operate mechanical equipment 

one hour each week.

3. At startup, operate mechanical equipment one hour or until oil is warm, then 

shut the equipment down. Drain the oil and refill with new oil.

Refer to Geareducer Manual for instruction on changing oil. Refer to 

Downtime 

Instruction Manual

 for downtime exceeding six months.

Electric Motors

1.  Do not start motor without determining that there will be no interference 

with free rotation of the fan drive.

2. Refer to the 

Marley Motor User Manual.

3.  If shutdown period is longer than seasonal, contact your Marley sales rep-

resentative for additional information.

Cooling Tower Cleaning

Any  evaporative-type  cooling  tower  must  be  thoroughly  cleaned 
on  a  regular  basis  to  minimize  the  growth  of  bacteria,  including 
Legionella  Pneumophilla,  to  avoid  the  risk  of  sickness  or  death. 
Service personnel must wear proper personal protective equipment 
during decontamination. Do NOT attempt any service unless the fan 
motor is locked out.

Operators of evaporative cooling equipment, such as water cooling towers, 
should follow maintenance programs which will reduce to an absolute minimum 
the opportunity for bacteriological contamination. Public Health Service officials 
have recommended that “good housekeeping” procedures be followed, such 
as: regular inspections for concentrations of dirt, scale, and algae; periodic 
flushing and cleaning; and the following of a complete water treatment program 
including biocidal treatment.

Visual inspection should take place at least once a week during the operating 
season. Periodic flushing and cleaning should be done at least twice a year. 
Nozzles should be checked for clogging. Drift eliminators, and easily acces-
sible fill surfaces should be cleaned by use of a moderate-pressure water 
nozzle, being careful not to cause physical damage. A reliable water treatment 
program should be installed and maintained.

 

Warning

Summary of Contents for Marley Class F400

Page 1: ... Marley Class F400 Cooling Tower User Manual 93 1288A ...

Page 2: ...mportant 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 damage if ignored Indicates special instructions on installation operation or main tenance which are important but not related to personal inju...

Page 3: ...ooling tower continuously for several days before starting the mechanical equipment and placing the cooling tower into continuous operation When starting in cold weather follow procedures outlined in Cold Weather Operation INSPECTION It is imperative that all operating assemblies be inspected before they are placed in operation The following is a list of components to be checked before starting th...

Page 4: ...the proper amount of water Starting Procedure WATER SYSTEM Fill the cold water collection basin and circulating water systemuntiltheoperatingwaterlevelisreached SeeOperationSection below Prime and start the circulating water pumps Increase the flow of circulating water gradually to design water flow rate to avoid water hammer which could damage the distribution piping system Clean the sump screens...

Page 5: ...ump capacity greater pressures might indicate clogged nozzles and or overpumping If a greatly reduced water flow rate is desired it may be advisable to change nozzle sizes to obtain the desired pressure and maintain proper water distribution An SPX Cooling Technologies engineer can advise minimum and maximum flow rates for even distribution COLD WATER COLLECTION BASIN A suitable depth must be main...

Page 6: ...donthecirculatingwater icingcannotbecontrolled Towers must not be operated with reduced water rate and or no heat load during freezing weather If a bypass directly into the cold water basin is used all water must be bypassed Reverse operation of fans is not recommended See Fan Drive for fan speed change precautions INTERMITTENT OPERATION When the unit is operated intermittently dur ing winter weat...

Page 7: ...ness COLDWATERCOLLECTIONBASIN suppliedbyothers Inspectcollection basin occasionally for leaks and repair if necessary Keep cold water outlets clean and free of debris Makeup and circulating water controls must operate freely and maintain the desired water quantity in the system DRIVE SHAFT Check drive shaft alignment and condition of couplings every six months See the Drive Shaft User Manual for c...

Page 8: ...r d n o d e s a b e r a s r e i l p i t l u M EXAMPLE 7000 GPM circulating rate 15 cooling range To maintain 4 concentrations the required blowdown is 38 or 0038 times 7000 GPM which is 26 6 GPM If tower is operated at 4 concentrations circulating water will contain four times as much dissolved solid as the make up water providing none of the solids form scale or are otherwise removed from the sys...

Page 9: ...wner must keep water clean by treatment screening or filtering to avoid the possibility of fill clogging and loss of thermal perfor mance Potential Causes of Fill Clogging Suspended materials Trash etc Scale Can be sulfates silicates carbonates or oxides Scaling effects can be accentuated by suspended muds Algae and or Slime Can control with chlorine or non oxidizing biocides Possible Sources of S...

Page 10: ......

Page 11: ......

Page 12: ...e to furnish the tower serial number when ordering parts Seasonal Shutdown Instructions Tower Drain all tower piping During shutdown clean the tower and make any necessary repairs Apply protective coating as required to all metal parts Particular attention should be given to mechanical equipment supports drive shaft and drive shaft guards Mechanical Equipment Geareducer shutdown for 3 months or le...

Page 13: ... including Legionella Pneumophilla to avoid the risk of sickness or death Servicepersonnelmustwearproperpersonalprotectiveequipment during decontamination Do NOT attempt any service unless the fan motor is locked out Operators of evaporative cooling equipment such as water cooling towers shouldfollowmaintenanceprogramswhichwillreducetoanabsoluteminimum theopportunityforbacteriologicalcontamination...

Page 14: ...ing replace worn bearing Change to proper lubricant See motor manufacturer s instruction Stop motor and attempt to start it Motor will not start if single phased Check wiring controls and motor Clean motor and check ventilation openings Allow ample ventila tion around motor Check with Ohmmeter Straighten or replace shaft Remove plugs and regrease bearings Flush bearings and relubricate Replace bea...

Page 15: ... screws See Drive Shaft User Manual Make certain all blades are as far from center of fan as safety devices permit All blades must be pitched the same See Fan User Manual Clean off deposit build up on blades Check fan and pinion shaft endplay Replace bearings as neces sary Disconnect load and operate motor If motor still vibrates rebal ance rotor Check fan and pinion shaft with dial indicator Repl...

Page 16: ...level M 9 Check oil for water and sludge M 10 Change oil S 11 Check fan blade tip clearance S 12 Check water level D D 13 Check for leakage W S S S 14 Inspect general condition S S S S Y S Y S Y S S S Y S S S 15 Tighten loose bolts S S S S 16 Clean R R R R R R S R R R R 17 Repaint R R R R 18 Rebalance R R 19 Inspect repair for safe use Y Y Y 20 Inspect and repair before each use R Fan and Fan Guar...

Page 17: ...17 Inspection and Maintenance Notes ...

Page 18: ...Needs immediate attention 1 2 3 Comments Inspection Checklist Use this space to list specific items needing attention ___________________________________________________________ ____________________________________________________________________________________________________________ ____________________________________________________________________________________________________________ ____...

Page 19: ...terial Hub Material Hub Cover Material Blade Assembly Hardware Blade Tip Clearance min max Vibration Level Fan Cylinder Height Mech Eqpt Support Mat l Oil Fill Drain Lines Oil Level Sight Glass Vibration Limit Switches Other Components Motor Manufacturer Name Plate Data hp RPM Phase Cycle Volts F L Amps Frame S F Special Info Last Lubrication Date Grease Used Type Any Unusual Noise No q Yes q Acti...

Page 20: ...6213 UNITED STATES 913 664 7400 spxcooling spx com spxcooling com In the interest of technological progress all products are subject to design and or material change without notice 2009 SPX Cooling Technologies Inc Printed in USA Manual 93 1288A ...

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