Process Fluid Temperature – The standard range for the leaving fluid temperature for this series of packaged chillers is 20°F to 80°F (-6.7°C to 26.7°C). When the process requires fluid temperatures below 45°F (27.2°C) it is imperative that the process fluid is a mix of an industrial grade ethylene or propylene glycol and water to the proper percentage (by volume) to protect the system. See Chapter 3 for a further discussion regarding the use of glycol within the system for these applications.

WARNING! - ACS Group does not warrant the freeze up of the evaporator under any circumstances.

Chilled Water Circuit

Cooling water “To Process” and “From Process” connections are made at the female NPT couplings provided outside the unit.

Warm coolant (water and glycol mixture) returns from the process and goes into the reservoir tank.

The coolant is then pumped through the evaporator where it is cooled.

The coolant flows to the process and returns to repeat the cycle.

A process water bypass valve located between the supply line and reservoir tank (single pump models only) allows minimal flow through the unit during the intermittent fluctuating flow conditions. It is not intended to provide continuous full bypass flow.

This minimal flow allows the flow switch to make when

the process flow is stopped. If the flow switch is not made the controller shuts down the compressor to prevent freezing up the evaporator.

GP Series Portable Chillers

Chapter 2: Functional Description

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Sterling 882.93092.01 manual Chilled Water Circuit
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882.93092.01 specifications

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