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SPX Cooling Technologies MHF702, MHF705 user manual Contents

Models: MHF702 MHF705

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Contents

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Warning

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Note

Contents

This manual contains vital information for the proper installation and operation of your fluid cooler. Carefully read the manual before installation or operation of the fluid cooler and follow all instructions. Save this manual for future reference.

Fluid Cooler Location	5
Fluid Cooler Shipment	6
Receiving Fluid Cooler	6
Hoisting Fluid Cooler	6
Fluid Cooler Installation	7
Motor Wiring	8
Mechanical Equipment	11
Fluid Cooler Start-Up	13
Fluid Cooler Operation	15
Wintertime Operation	16
Water Treatment	20
Fluid Cooler Cleaning	21
Blowdown	21
Belt Adjustment	22
Sheave Alignment	24
Fluid Cooler Maintenance	25
Seasonal Shutdown Instructions	28
Prolonged Shutdown	29
Troubleshooting	32
Additional Information	34
Troubleshooting	29
Maintenance Schedule	31

The following defined terms are used throughout this manual to bring at- tention to the presence of hazards of various risk levels, or to important information concerning the life of the product.

Indicates presence of a hazard which can cause severe personal injury, death or substantial property damage if ignored.

Indicates presence of a hazard which will or can cause personal injury or property damage if ignored.

Indicates special instructions on installation, operation or maintenance which are important but not related to personal injury hazards.

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SPX Cooling Technologies MHF702, MHF705 user manual Contents

Contents

User Manual sea05-116E Marley MH Fluid CoolerPage Contents Preparation Safety Firstto be sure that all safety considerations have been addressed Fluid Cooler LocationItisnot intended nor assumed that access tothe fan deck onsingle-flow Those are only some of the safety issues that may arise in the designHoisting Fluid Cooler InstallationTower Shipment Receiving Fluid CoolerInstallation Fluid Cooler InstallationMotor Wiring When using a starterInstallation Before beginning, ensure that the motor is rated for “Inverter Duty” When using a two-speed starterWhen using a VFD InstallationImproper 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 InstallationOperation Fluid Cooler Start-UpWater 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 OperationFluid Cooler Operation GeneralOperation Wintertime Operation 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 proceduresIntermittent Wintertime Operation Protection Against Coil FreezingOperation Draining the coil is not acceptable as a normal method of freeze OperationMaintenance Water Treatment and BlowdownMaintaining Water Quality Fluid Cooler Cleaning BlowdownMaintenance Belt Tensioning MaintenanceWhen water treatment chemicals are added, they should not be in JACKING SCREWS MOTOR JACKING SCREWSMOTOR SINGLE MOTOR-TWO FANSSTRAIGHT EDGE Sheave AlignmentMaintenance FAN SHAFT SHEAVEFluid Cooler Maintenance Bushing Fastener Torque ValuesMaintenance Semi-Annually If equipped, check the belt tension and condition Maintenanceoil designed specifically for these Geareducers. If, after five years Motor Relubrication InstructionsMaintenance Open and lock out disconnect switch to make certain motor cannotSeasonal Shutdown Instructions Maintenanceon page Maintenance Prolonged ShutdownMaintenance SPX Cooling Technologies ServicesSemi-annually Maintenance ScheduleMaintenance Service MonthlyRemedy TroubleshootingTrouble CauseRemedy TroubleshootingTrouble CauseAdditional Information Page SPX COOLING TECHNOLOGIES MALAYSIA Sdn Bhd seaM05-116E