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SPX Cooling Technologies none user manual Prolonged Shutdown, Maintenance

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ence with free rotation of the fan drive.

Maintenance

Fluid cooler framework: Check structural bolted connections and tighten as required.

Fans: Check fan assembly bolting and tighten as required. Use torque values prescribed in the Fan User Manual.

Fans shaft bearings: Lubricate fan shaft bearings at close of each oper- ating season—see page 22.

Electric motors: Clean and lubricate motor at close of each operating season (refer to motor manufacturer’s recommendations.) Check motor anchor bolts and tighten as required.

Do not start motor before determining that there will be no interfer-

Caution

ence with free rotation of the fan drive.

The motor(s) should be operated for three hours at least once a month. This serves to dry out windings and re-lubricate bearing surfaces. Refer to the Marley “Electric Motor User Manual” Manual 92-1475available at spxcooling.com.

At start of new operating season, make sure bearings are adequately lubricated before returning motor to service.

Prolonged Shutdown

If shutdown period is longer than seasonal, contact your Marley sales representative for additional information.

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SPX Cooling Technologies none user manual Prolonged Shutdown, Maintenance, ence with free rotation of the fan drive

Contents

Marley MC Fluid Cooler Page Contents Safety First PreparationFluid Cooler Location PreparationInstallation ShipmentReceiving Fluid Cooler Hoisting Fluid CoolerFluid Cooler Installation InstallationMotor Wiring When using a starterInstallation When using a two-speed starter When using a VFDInstallation per NEMA MG-1,partInstallation speeds. To benefit from these advantages, it is important that the drive be installed correctlyMechanical Equipment InstallationOperation Fluid Cooler Start-UpWater System Fluid Cooler Operation GeneralOperation 2.Air wet-bulbtemperature Cold process fluid temperature will also vary with the wet-bulbtemperature of the air entering the fluid cooler. Reduced wet-bulbtemperatures will result in colder process fluid tem- peratures. However, the cold process fluid temperature will not vary to the same extent as the wet-bulb.For example, a 11C reduction in wet-bulbmay result in only a 8C reduction in cold process fluid temperature OperationWintertime Operation OperationIntermittent Wintertime Operation Operationing conditions Protection Against Coil Freezing OperationWater Treatment and Blowdown Maintaining Water QualityOperation Fluid Cooler Cleaning BlowdownOperation Operation centrations. The following table shows the minimum amount of blowdown percent of flow required to maintain different concentrations with various cooling rangesMaintenance Fluid Cooler MaintenanceBushing Fastener Torque Values Belt TensioningMaintenance protective clothing and equipmentSeasonal Shutdown Instructions MaintenanceProlonged Shutdown Maintenanceence with free rotation of the fan drive SPX Cooling Technologies Services MaintenanceMaintenance Schedule Additional Services Troubleshooting TroubleCause RemedyTroubleshooting TroubleCause RemedyPage Page Manual uk 07-1185C