Operation

4.Air flow rate: Reducing air flow through the fluid cooler causes the cold process fluid temperature to rise. This is the recommended method by which to control leaving process fluid temperature.

If your fluid cooler is equipped with a single-speed motor, the motor may be shut off when the process fluid temperature becomes too cold. This will cause the process fluid temperature to rise. When the fluid temperature then becomes too warm for your process, the motor can be restarted.

Caution

When operating in this mode care must be taken not to exceed a total

fan acceleration time of 30 seconds per hour.

 

Fan cycling limits: From a dead stop, determine the number of sec- onds it takes the fan to arrive at full speed. Divide this number into 30 to determine the allowable number of starts per hour. Considering the normal fan and motor sizes utilized on MH Fluid Coolers, anticipate that approximately 4 to 5 starts per hour are allowable.

If your fluid cooler is equipped with a two-speed motor(s), you will enjoy greater opportunity for process temperature control. When the process fluid temperature becomes too cold, switching the fan to half-speed will cause the cold process fluid temperature to rise— stabilizing at a temperature a few degrees higher than before. With a further reduction in fluid temperature, the fan may be cycled alternately from half-speed to off—subject to the same constraint of 30 seconds of allowable acceleration time per hour as outlined above.

For greater insight on process fluid temperature control, please read “Cooling Tower Energy and its Management”, Technical Report #H-001-A, available from your Marley sales representative.

Wintertime Operation:

The Marley film-fill system used in the MH Fluid Cooler has air entrance louvers that are molded as an integral part of the fill. This feature makes these fluid coolers very forgiving of cold weather operation, even at the low temperature and reduced load conditions encountered in low temperature applications. Nevertheless, during operation in subfreezing weather the op- portunity exists for ice to form in the colder regions of the fluid cooler.

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SPX Cooling Technologies MHF705, MHF702 user manual Wintertime Operation, Fan acceleration time of 30 seconds per hour
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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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