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SPX Cooling Technologies Marley MH Fluid Cooler user manual Operation

Models: Marley MH Fluid Cooler

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1.Maintain sufficient flow rate through the coil.

Operation

Caution

	Model	Coil Volume	Model	Coil Volume
	Model	US Gallons	Model	US Gallons
		US Gallons		US Gallons

	MHF702__061	65	MHF705__061	235

	MHF702__081	85	MHF705__081	315

	MHF702__101	105	MHF705__101	390

	MHF702__121	125	MHF705__121	465

	MHF702__062	75	MHF705__062	285

	MHF702__082	100	MHF705__082	380

	MHF702__102	120	MHF705__102	470

	MHF702__122	150	MHF705__122	565

	MHF703__061	85	MHF706__061	390

	MHF703__081	115	MHF706__081	500

	MHF703__101	140	MHF706__101	610

	MHF703__121	170	MHF706__121	725

	MHF703__062	100	MHF706__062	475

	MHF703__082	130	MHF706__082	610

	MHF703__102	165	MHF706__102	750

	MHF703__122	200	MHF706__122	885

	MHF704__061	160	MHF707__061	450

	MHF704__081	210	MHF707__081	580

	MHF704__101	260	MHF707__101	710

	MHF704__121	310	MHF707__121	840

	MHF704__062	190	MHF707__062	570

	MHF704__082	250	MHF707__082	740

	MHF704__102	315	MHF707__102	905

	MHF704__122	375	MHF707__122	1071

When the use of industrial antifreeze solutions is not possible, the system must be operated to meet both of the following conditions.

1.Maintain sufficient flow rate through the coil.

2.Maintain sufficient heat load on the process fluid. Fluid exiting the coil must be maintained at or above 45°F. Cycling of the recirculation pump should not be used to control process temperatures.

Draining the coil is not acceptable as a normal method of freeze protection—draining promotes corrosion inside the coil tubes. Drain- ing is acceptable in an emergency if the coil is not protected by an antifreeze solution.

It is recommended that you discuss your freeze prevention options with your local Marley sales representative.

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SPX Cooling Technologies Marley MH Fluid Cooler user manual Operation, Maintain sufficient flow rate through the coil

Contents

œœˆ˜Ê/iV…˜œœˆiÃ Marley MH Fluid CoolerVŽiÊNÊ “œ˜ÊÀÞÊ œœˆ˜ÊNÊ ÀiÞ Page Contents Preparation Safety FirstPreparation Fluid Cooler LocationHoisting Fluid Cooler InstallationFluid Cooler Shipment Receiving Fluid CoolerInstallation Fluid Cooler InstallationWhen using a starter Motor WiringInstallation per NEMA MG-1,part When using a two-speed starterWhen using a VFD Installationequipment. 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 correctly InstallationInstallation Mechanical Equipment4.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 motor InstallationFluid Cooler Start-Up OperationWater System 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 following OperationGeneral Fluid Cooler OperationOperation Operation Wintertime Operationfan acceleration time of 30 seconds per hour Operation 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 followsProtection Against Coil Freezing Intermittent Wintertime OperationOperation 1.Maintain sufficient flow rate through the coil OperationMaintaining Water Quality Water Treatment and BlowdownOperation Fluid Cooler Cleaning MaintenanceBlowdown Maintenance Belt TensioningSINGLE MOTOR-TWOFANS Figure Figure#+.3#2%73 3%.3!2$7!2% 4/2SHEAVE Sheave AlignmentMaintenance FAN SHAFT SHEAVEBushing Fastener Torque Values Fluid Cooler MaintenanceMaintenance Weekly Inspect for bacterial growth and general operation conditions. Bacterial growth should be reported to your water treatment expert for immediate attention MaintenanceMaintenance Motor Relubrication InstructionsMaintenance Seasonal Shutdown InstructionsMaintenance Prolonged ShutdownMaintenance SPX Cooling Technologies ServicesSemi-annually Maintenance ScheduleMaintenance Service MonthlyRemedy TroubleshootingTrouble CauseRemedy TroubleshootingTrouble CauseAdditional Information Page Balcke Hamon Dry Cooling Marley Cooling TechnologiesManual 05-116D