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SPX Cooling Technologies Marley MH Fluid Cooler Sheave Alignment, Maintenance, Fan Shaft Sheave

Models: Marley MH Fluid Cooler

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FAN SHAFT

Maintenance

sion is the lowest tension at which the belt will not slip under peak load conditions. Check tension frequently during the first 24-48 hours of run-in operation. Overtensioning shortens belt and bearing life. Keep belts free from foreign material which may cause slipping. Never apply belt dress- ing as this will damage the belt and cause early failure. A Dodge® V-Belt Tension Tester is an alternate method for tensioning V-belts. Check with you local belt supplier.

FAN SHAFT

SHEAVE

	SHEAVE
Figure 3	STRAIGHT EDGE

Sheave Alignment

•The motor sheave is to be positioned as close as possible to the motor in order to minimize stress on the motor bushings.

•The motor and fan sheaves may have grooves that are not used. The bottom surface of the motor and fan sheaves must be aligned within 1⁄8" of each other and level within 1⁄2° (1⁄8" in 12) in order to not adversely affect belt and sheave life.

•Alignment can be achieved by placing a straight edge across the sheaves making sure that it is level and measuring down to the bot- tom surface of both sheaves at four points.

•The belt is to be located in the grooves closest to the motor center- line.

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SPX Cooling Technologies Marley MH Fluid Cooler user manual Sheave Alignment, Maintenance, Fan Shaft Sheave, Straight Edge

Contents

Marley MH Fluid Cooler œœˆ˜Ê/iV…˜œœˆiÃVŽiÊNÊ “œ˜ÊÀÞÊ œœˆ˜ÊNÊ ÀiÞ Page Contents Safety First PreparationFluid Cooler Location PreparationInstallation Fluid Cooler 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 equipment. Electrical savings can be large during periods of low ambient temperature when the cooling requirement can be satisfied at reduced speeds. To benefit from these advantages, it is important that the drive be installed correctlyMechanical Equipment InstallationInstallation 4.Momentarily bump energize the motors and observe rotation of the fans. If rotation is backwards, shut off the fan and reverse two of the three primary leads supplying power to the motorOperation Fluid Cooler Start-UpWater System Operation 7.While operating the recirculating water pumps and prior to operat- ing the cooling tower fan, execute one of the two alternative biocidal treatment programs described in the followingFluid Cooler Operation GeneralOperation Wintertime Operation Operationfan acceleration time of 30 seconds per hour 1.Do not allow the fluid coolers leaving process fluid temperature to drop below 45F. If such low temperature operation is necessary or beneficial to your process, establish the minimum allowable level as follows OperationIntermittent Wintertime Operation Protection Against Coil FreezingOperation Operation 1.Maintain sufficient flow rate through the coilWater Treatment and Blowdown Maintaining Water QualityOperation Maintenance Fluid Cooler CleaningBlowdown Belt Tensioning MaintenanceFigure Figure #+.3#2%733%.3!2$7!2% 4/2 SINGLE MOTOR-TWOFANSSheave Alignment MaintenanceFAN SHAFT SHEAVE SHEAVEFluid Cooler Maintenance Bushing Fastener Torque ValuesMaintenance Maintenance Weekly Inspect for bacterial growth and general operation conditions. Bacterial growth should be reported to your water treatment expert for immediate attentionMotor Relubrication Instructions MaintenanceSeasonal Shutdown Instructions MaintenanceProlonged Shutdown MaintenanceSPX Cooling Technologies Services MaintenanceMaintenance Schedule Maintenance ServiceMonthly Semi-annuallyTroubleshooting TroubleCause RemedyTroubleshooting TroubleCause RemedyAdditional Information Page Cooling Technologies Balcke Hamon Dry Cooling MarleyManual 05-116D