Operations; Operating Method; Running The Chiller - USA Lab UHC Series User Manual

4

Operations

This section describes common tasks required for the operation of the UHC Series.
4.1

Operating method

Only operate the unit in a climate-controlled facility. Operating temperature is 70°F or 20°C. If
the temperature exceeds 80°F or 26°C performance will be degraded.
Units returned that have signs of outside use will automatically be determined to be
improperly used and cared for.
Wait 12-hours after receiving shipment before operating the equipment. This gives the
compressor oil a chance to settle back inside the compressor.
When filling the unit and/or a reactor:
Power on the unit.
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Fill the tank ¾ full.
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Open the ball valve and turn on the fluid pump.
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Continue to fill the tank watching the level. Do not allow level to drop below 1/4.
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When the jacket is full and the tank reaches the 1/2 way point stop filling.
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Close the lid and follow the priming instructions.
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4.2

Running the chiller

With the system and chiller pump primed, you can start the chiller to control the temperature
in your system.
Notice
When using the unit always enable the pump first. Then enable the cooling AND
heating functions. Both must be used to keep temperature accuracy. Otherwise, the
temperature may overshoot the set point.
When not operating the unit, close the ball valve and shut off the power.
To run the chiller, follow these steps:
1. Power on the unit.
2. Open the ball valve.
3. Run the pump.
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