Spx-cooling-technologies Cooling Tower Marley MD Manuel d'utilisateur

/ Marley MD Cooling Tower /User Manual 08-1616A

10Installation• IfcabledistancebetweentheVFDandmotorisgreaterthan100feetaDV/DToutputlterisrecommendedtoavoiddamagetothemotor

11Mechanical Equipment:Always shut off electrical power to the tower fan motor prior to performing any maintenance on the tower. Any electr

123. Run the motor and observe the operation of the mechanical equipment. Operation should be stable.4. Check belt tension and torque on the fan

13If tower is equipped with a side or end suction connection, vent ac-cumulated air from the top of the suction hood by removing one or both tap screw

147. While operating the condensing water pump(s) and prior to operat-ing the cooling tower fan, execute one of the two alternative biocidal treatme

15Tower OperationGeneral:The cold water temperature obtained from an operating cooling tower will vary with the following inuences:1. Heat load: Wi

16cause the water temperature to rise. When the water temperature then becomes too warm for your process, the motor can be restarted.When operating in

17 CautionSlushy, transitory ice forms routinely in the colder regions of the ll at low temperature. Such ice normally has no adverse effect on tower

18not to prevent it. Reverse fan operation should not need to exceed 1 or 2 minutes. Monitoring is required to determine the time required to melt acc

19Water Treatment and BlowdownMaintaining Water Quality:The steel used in MD towers has been galvanized with a heavy zinc coat-ing averaging 2.0 mils

2ContentsTower Location ... 4Tower Shipment ...

20Cooling Tower Cleaning:Any evaporative-type cooling tower must be thoroughly cleaned on a regular basis to minimize the growth of bacteria, includin

21table shows the minimum amount of blowdown (percent of ow) required to maintain different concentrations with various cooling ranges*:* Range = D

22On the MD5016 the motor is located inside the tower plenum. Open the access door (see Access Door Opening Procedure) and hinge out of the way.Any bo

23Maintenancethe plenum the rod retention is held in place with fasteners. Loosen fastener and slide the bracket away from the adjusting rod. Turn the

24sheave to determine the diameter. If diameter markings are unreadable, measure the sheave diameter at the bottom of the sheave grooves.New belts (op

25Sheave Assembly Bolt TorqueBusing Typeft·lbƒN·mSD 5 10SK 15 20SF 25 30E 35 50 WarningMaintenanceFan Motor Access and RemovalAlways shut off elect

26MaintenanceThe MD5016 fan motor is located inside the tower. The motor can be accessed through the mechanical access panel. See the Acce

27Maintenancereverse. When fastening the motor mount mechanism to the torque tube, rst insert the fasteners closest to the access panel that acts as

28Access Door OperationAlways shut off electrical power to the tower fan motor prior to performing any inspections that may involve physica

29MaintenanceTo remove the eliminator, stand inside the access panel and lift with two hands on an eliminator section, this will indicate where one se

3PreparationThe Marley MD cooling tower purchased for this installation represents the current state of the art in counterow, induced draft

30MaintenanceDistribution System MaintenanceTo keep your MD cooling tower operating at peak performance, it may be necessary to clear the spray system

31arm while pulling out from the header box. When branch arms are removed, access to the interior of the spray header box is available to clean and re

32Weekly: Inspect for bacterial growth and general operation conditions. Bacterial growth should be reported to your water treatment ex

33Semi-Annually: Check belt tension and condition. Adjust tensions as necessary.Clean and disinfect cooling tower with biocides. Systems with

34evidence of a generalized failure of the galvanizing, localized touch-up should be all that is required.To the extent that the galvanizing (zi

35SPX Cooling Technologies ServicesOur interest in your MD cooling tower does not end with the sale. Having conceived, designed, and manufactured

36Maintenance ScheduleMaintenance Service Monthly Semi-annually Seasonal Startup or AnnuallyInspect General Condition and Operationx xObserve Operatio

37Additional InformationIncreased load requirements: MD towers are designed so that cells of either equal or unequal capacity can be added in the futu

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4PreparationSeveral options are available that may assist you in addressing some of these personnel safety concerns, including:— mechanical access pla

Manual 08-1616A7401 WEST 129 STREET | OVERLAND PARK, KANSAS 66213 UNITED STATES | 913 664 7400 | [email protected] | spxcooling.comIn the

5OFFSET MAY BE REQUIREDFOR BALANCED LIFTCENTER OFTOWERCENTER OFTOWERWIDTHWIDTHLIFTINGSLINGLIFTINGSLING70° MAXBOTH MODULESOFFSET MAY BE REQUIREDFOR BAL

6Tower InstallationThese installation instructions are intended to help you prepare before your tower arrives. If discrepancies exist between these in

7If tower purchased is one fan cell only, ignore steps 4 through 8.5. If collection basins are to be equalized by the use of Marley standard umes,

8installed in the square opening in the oor of the cold water basin of one or more cells—sealed against leakage, and attached by machine bolts, accor

9InstallationMotor WiringWire motor leads as shown on the motor nameplate matching the supply voltage. Do not deviate from the motor nameplate wiring.