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Marley

Class 800 Mechanical Draft

Cooling Tower

User Manual 95-1356A

Содержание MARLEY CLASS 800

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...