SPX Cooling Technologies MHF705, MHF702 user manual Belt Tensioning

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Maintenance

(percent of flow) required to maintain different concentrations with various cooling ranges*:

Cooling Range

 

 

Number of Concentrations

 

 

 

 

 

 

 

 

 

1.5X

2.0X

2.5X

3.0X

4.0X

5.0X

6.0X

 

 

 

 

 

 

 

 

 

3°C

.7

.38

.25

.18

.11

.08

.06

6°C

1.5

.78

.51

.38

.25

.18

.14

8°C

2.3

1.18

.78

.58

.38

.28

.22

11°C

3.1

1.58

1.05

.78

.51

.38

.30

 

 

 

 

 

 

 

 

14°C

3.9

1.98

1.32

.98

.64

.48

.38

 

 

 

 

 

 

 

 

Multipliers are based on drift of 0.02% of the circulating water rate.

*Range = Difference between hot water temperature and cold water temperature.

EXAMPLE: 44.2 L/s circulating rate, 10°C cooling range. To maintain 4 concentrations, the required blowdown is 0.467% or .00467 times 44.2 L/s, which is 0.2 L/s.

If fluid cooler is operated at 4 concentrations, circulating water will contain four times as much dissolved solid as the makeup water, assuming none of the solids form scale or are otherwise removed from the system.

When water treatment chemicals are added, they should not be in-

Notetroduced into the circulating water system via the water collection basin of the cooling tower. Water velocities are lowest at that point, which results in inadequate mixing. An ideal location would be the redistribution basin above the coil.

Belt Tensioning

See Figure 1 and Figure 2 for MH Fluid Cooler models MHF702 thru MHF705. Loosen specified hardware located at the top and bottom of the motor support assembly before adjusting the jacking screws. Do not remove the hardware—it is required to support the motor. Tighten the hardware after adjustment. Ideal tension 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 dressing 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.

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Contents Marley MH Fluid Cooler Page Contents Safety First PreparationFluid Cooler Location Receiving Fluid Cooler InstallationTower Shipment Hoisting Fluid CoolerFluid Cooler Installation Motor Wiring When using a starterWhen using a two-speedstarter When using a VFDInstallation Mechanical Equipment Installation Fluid Cooler Start-Up OperationWater System Operation Fluid Cooler Operation GeneralWintertime Operation Fan acceleration time of 30 seconds per hourOperation Intermittent Wintertime Operation Protection Against Coil FreezingModel Coil Volume Water Treatment and Blowdown MaintenanceMaintaining Water Quality Fluid Cooler Cleaning BlowdownBelt Tensioning Jacking Screws Straight Edge Sheave AlignmentFluid Cooler Maintenance Bushing Fastener Torque ValuesMaintenance Motor Relubrication Instructions Further instructionsSeasonal Shutdown Instructions Prolonged Shutdown SPX Cooling Technologies Services Maintenance Schedule Troubleshooting Trouble Cause RemedyTroubleshooting Additional Information Page SeaM05-116E

MHF702, MHF705 specifications

SPX Cooling Technologies has established itself as a leader in innovative cooling solutions, with the MHF705 and MHF702 units being prime examples of their commitment to efficiency and performance. These models are designed specifically for cooling processes in various industrial applications, providing reliable operation while minimizing energy consumption.

The MHF705 and MHF702 units are both equipped with advanced features that enhance their operational efficiency. One of the standout characteristics is their modular design, which allows for easy customization and scalability according to the system requirements. This flexibility makes them suitable for a wide range of applications, from HVAC systems to industrial cooling processes.

In terms of technology, both units utilize SPX’s proprietary air distribution system that optimizes airflow patterns within the unit. This ensures uniform cooling and reduces hot spots, contributing to enhanced overall performance. Additionally, the MHF series incorporates high-efficiency fans designed to reduce energy consumption while maximizing cooling output. These fans not only operate quietly but also have extended lifespans, reducing the need for frequent replacements.

Another significant feature of the MHF705 and MHF702 models is their robust construction. With materials designed to withstand harsh environmental conditions, including corrosion-resistant coatings, these units promise longevity and durability. This resilience is crucial for industries where reliability and minimal downtime are paramount.

The MHF series also excels in terms of maintainability. Features such as easily accessible components and modular serviceability make routine maintenance straightforward, which helps in limiting operational interruptions. Additionally, the units are designed with energy efficiency in mind, complying with various environmental standards, which reflects SPX's commitment to sustainability.

Both models also benefit from advanced control technologies, allowing for seamless integration with existing systems. Users can monitor and adjust settings easily via a user-friendly interface, ensuring optimal performance tailored to specific cooling demands.

In summary, SPX Cooling Technologies’ MHF705 and MHF702 units represent the pinnacle of modern cooling technology. With their advanced features, scalable design, high durability, and energy-efficient operation, these cooling solutions stand out as ideal choices for a diverse range of industrial applications, ensuring that businesses can rely on them for efficient and dependable cooling performance.
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