background image

16

         

Maintenance

to institute a program of water treatment and maintenance that will minimize 
their impact. (See 

Water Treatment

 on pages 18 and 19.)

Tower Framework

Inspect for cracks and spalling and repair if necessary. Keep bolts tight in the 
mechanical equipment supports. Maintain a positive Langelier index in your 
circulating water. (See 

Water Treatment

 on pages 18 and 19.)

Drive Shaft

Check  drive  shaft  alignment  and  condition  of  couplings  every  six  months. 
See the 

Drive Shaft User Manual

 for correcting misalignment, balancing, 

or replacing parts.

Electric Motor

Lubricate and maintain each electric motor in accordance with the manufacturer’s 
instructions. If repair work is necessary, contact the nearest representative 
of the motor manufacturer. See Warranty Section of Marley 

User Manual

 

on

 

Electric Motors

.

Fan

Inspect  fan  blade  surfaces  every  six  months.  For  detailed  maintenance 
information, refer to 

Marley Fan User Manual.

Geareducer

Make weekly and monthly oil checks. Inspect internal parts during seasonal 
oil change. Refer to the 

Geareducer User Manual

 for detailed maintenance 

instructions.

Cold Water Collection Basin

Inspect collection basin occasionally for cracks, leaks, and spalling and repair 
if necessary. Maintain a positive Langelier index in your circulating water. (See 

Water Treatment

 on pages 18 and 19.) Keep cold water outlets clean and 

free of debris. Make-up and circulating water controls must operate freely and 
maintain the desired water quantity in the system.

Summary of Contents for MARLEY CLASS 800

Page 1: ...Marley Class 800 Mechanical Draft Cooling Tower User Manual 95 1356A...

Page 2: ...or can cause personal injury or property damage if ignored Indicates special instructions on installation operation or maintenance which are important but not related to personal injury hazards These...

Page 3: ...tion 9 Freezing Weather Operation 11 Temperature Control and Energy Management 13 Maintenance 15 Cleaning 17 Water Treatment 18 Seasonal Shutdown Instructions 20 Spare Parts and Accessories 21 Trouble...

Page 4: ...l still dissipate all the heat from the process but at new water temperatures The cooling tower cold water temperature is the supply water temperature to the condenser and changes in the cold water te...

Page 5: ...ightness of bolts that attach mechanical equipment support to the tower structure Check tightness of bolts in fan cylinder joints and fan cylinder anchorage Check concrete structural surfaces for spal...

Page 6: ...hooting on pages 22 and 23 of this manual Fan must rotate clockwise when viewed from above Recheck Geareducer oil level Check functioning of make up water supply Make sure the blowdown or bleed off wi...

Page 7: ...the water has pumped down to in the cold water basin See Cold Water Collection Basin on page 10 This should coincide reasonably with the recommended operating water level indicated on the Marley proje...

Page 8: ...cold water basin until the heat load causes its temperature to rise above 70 F 21 C at which time it may be directed over the tower Also towers must not be operated with reduced water rate and or no h...

Page 9: ...perature Wet bulb temperature is the temperature indicated by the wet bulb thermometer of a sling or mechanically aspirated psychrometer A tower does not control the heat load For a given heat load th...

Page 10: ...sing unequal water distribution that will affect thermal performance The top of the fill should be frequently checked until such time as the operational sequence of the Amertap system assures that no...

Page 11: ...tely prevented but can be acceptably controlled Ice will form on the relatively dry parts of the tower that are in contact with the incoming air Primarily this includes the columns structural framing...

Page 12: ...operation can result in moisture laden air being pulled into the adjacent cylinder in which the fan is operating in reverse increasing this ice buildup Therefore fans each side of the one operating i...

Page 13: ...pages 11 and 12 Although the 70 F 21 C cold water temperature indicated on page 11 is appropriate for cold weather start up and operation acceptable temperaturesduringfulloperationinspring summer and...

Page 14: ...s 1 or 2 starts per hour may be the limit Determine the number of seconds it takes your fan to get to full speed by observation and divide that number into 30 to obtain the recommended maximum number...

Page 15: ...ptional access door in the fan deck with an optional short ladder to the top of the fill provides a means for inspection of the plenum area above and below the eliminators Removal of eliminator packs...

Page 16: ...structions If repair work is necessary contact the nearest representative of the motor manufacturer See Warranty Section of Marley User Manual on Electric Motors Fan Inspect fan blade surfaces every s...

Page 17: ...lcontamination Publichealthserviceofficials have recommended that good housekeeping procedures be followed such as regular inspections for concentrations of dirt scale and algae periodic flushingandcl...

Page 18: ...ended Chemical Treatment In some cases chemical treatment of the circulating water is not required if adequateblowdownismaintained Inmostcases however chemicaltreatment is required to prevent scale fo...

Page 19: ...use of sulfuric acid for pH adjustment The concentrationofcalciumsulfateshouldbekeptbelow1000ppm expressed as CaCO 3 Calcium carbonate generally will not form scale in the cooling tower if carbonate...

Page 20: ...ensate and check oil level Add oil if necessary Refer to Geareducer User Manual for maintenance and lubrication instructions Shutdown for 3 months or longer Ifthemotorshavespaceheaters operatemechanic...

Page 21: ...rried in the owner s stock One fan assembly One Geareducer assembly One drive shaft assembly One electric motor Six branch arms Six seal rings 100 ft roll of Band it One box of Band it buckles Be sure...

Page 22: ...ng fan hitting guard Reinstall or replace fan Motor Runs Hot Wrong voltage or unbalanced voltage Check voltage and current of all three lines against nameplate values Overload Check fan blade pitch Se...

Page 23: ...alignment and match marks properly matched Repair or replace worn couplings Rebalance drive shaft by adding or removing weights from balancing cap screws See Drive Shaft Service Manual Fan Make certa...

Page 24: ...Other safety precautions such as safety harnesses should be utilized where appropriate for compliance with OSHA regulations and standards and good safety practices Routine periodic maintenance must be...

Page 25: ...D D 3 Inspect keys keyways and set screws S S S S 4 Make sure vents are open S 5 Lubricate grease R S 6 Check oil seals M 7 Check operating oil level D 8 Check static oil level M 9 Check oil for water...

Page 26: ...n eye on it 3 Needs immediate attention 1 2 3 Comments Structure Casing Material Structural Material Fan Deck Material Stairway Material Ladder Material Handrails Material Interior Walkway Material Co...

Page 27: ...Material Fans Manufacturer Fixed Pitch Adjustable Pitch Diameter Number of Blades Blade Material Hub Material Hub Cover Material Blade Assembly Hardware Tip Clearance min max Vibration Level Fan Cylin...

Page 28: ...PARK KANSAS 66213 UNITED STATES 913 664 7400 spxcooling ct spx com spxcooling com In the interest of technological progress all products are subject to design and or material change without notice 200...

Reviews: