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SPX Cooling Technologies MHF702, MHF705 Bushing Fastener Torque Values, Fluid Cooler Maintenance

Models: MHF702 MHF705

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Bushing Fastener Torque Values

Bushing Fastener Torque Values

Warning

Warning

Maintenance

	Bushing	Fastener Size	Torque
	Bushing	Fastener Size	N·m
			N·m

	SH	¹⁄₄ - 20	8
	SDS	¹⁄₄ - 20	8
	SD	¹⁄₄ - 20	8
	SK	⁵⁄₁₆ - 18	18
	SF	³⁄₈ - 16	30
	E	¹⁄₂ - 13	48
	F	⁹⁄₁₆ - 12	58

Fluid Cooler Maintenance

Some maintenance procedures may require maintenance personnel to enter the fluid cooler. Each cased face of the fluid cooler has a door for access to the interior of the tower.

The optional fan deck ladder—models MHF706 and MHF707— is de- signed and intended solely for personnel to gain access to the fan deck. The fan deck ladder should not be used to enter or exit the access doors located on the cased face of the tower unless the optional access door platform is provided.

The purchaser or owner is responsible for providing a safe method for entering or exiting the access door. Use of the fan deck ladder to enter or exit the access doors may result in a fall.

Included with this instruction packet are separate User Manuals on each major operating component of the tower, and it is recommended that you read them thoroughly. Where discrepancies may exist, the separate User Manuals will take precedence.

The following is recommended as a minimum routine of scheduled main- tenance:

Always shut off electrical power to the tower fan motor prior to performing any inspections that may involve physical contact with the mechanical or electrical equipment in or on the tower. Lock out and tag out any electrical switches to prevent others from turning the power back on. Service personnel must wear proper personal protective clothing and equipment.

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SPX Cooling Technologies MHF702, MHF705 user manual Bushing Fastener Torque Values, Fluid Cooler Maintenance

Contents

User Manual sea05-116E Marley MH Fluid CoolerPage Contents Preparation Safety FirstItisnot intended nor assumed that access tothe fan deck onsingle-flow Fluid Cooler LocationThose are only some of the safety issues that may arise in the design to be sure that all safety considerations have been addressedTower Shipment InstallationReceiving Fluid Cooler Hoisting Fluid CoolerInstallation Fluid Cooler InstallationWhen using a starter Motor WiringInstallation When using a VFD When using a two-speed starterInstallation Before beginning, ensure that the motor is rated for “Inverter Duty”Improper use of a VFD may cause damage to equipment or personal injury. Failure to correctly install the VFD drive will automatically void all warranties associated with the motor and any equipment that is either electrically or mechanically directly attached to the VFD drive system. The length of this warranty avoidance will be contingent on properly installing the VFD system and repairing any damage that may have occurred during its operation. SPX Cooling Technologies does not assume responsibility for any technical support or damages for problems associate with non-Marley brand VFD systems InstallationInstallation Mechanical Equipment10 - 60 hrs. of operation. See Bushing Fastener Torque Values on page 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 Slushy, transitory ice forms routinely in the colder regions of the fill of low temperature towers, and is visible through the tower louvers. Such ice normally has no adverse effect on fluid cooler operation, but its appearance should be a signal to the operator to undertake ice control proceduresProtection Against Coil Freezing Intermittent Wintertime OperationOperation Draining the coil is not acceptable as a normal method of freeze OperationWater Treatment and Blowdown MaintenanceMaintaining Water Quality Blowdown Fluid Cooler CleaningMaintenance Maintenance Belt TensioningWhen water treatment chemicals are added, they should not be in MOTOR JACKING SCREWSSINGLE MOTOR-TWO FANS JACKING SCREWS MOTORMaintenance Sheave AlignmentFAN SHAFT SHEAVE STRAIGHT EDGEBushing Fastener Torque Values Fluid Cooler MaintenanceMaintenance Semi-Annually If equipped, check the belt tension and condition MaintenanceMaintenance Motor Relubrication InstructionsOpen and lock out disconnect switch to make certain motor cannot oil designed specifically for these Geareducers. If, after five yearsMaintenance Seasonal Shutdown Instructionson page Maintenance Prolonged ShutdownMaintenance SPX Cooling Technologies ServicesMaintenance Service Maintenance ScheduleMonthly Semi-annuallyTrouble TroubleshootingCause RemedyTrouble TroubleshootingCause RemedyAdditional Information Page SPX COOLING TECHNOLOGIES MALAYSIA Sdn Bhd seaM05-116E