Screw Compressor Central Chiller
Chapter 4: Operation
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To acknowledge the alarm, press the alarm silence button to clear it. It will then appear in the
alarm history screen. Except for High and Low Water Temperature, and Low Refrigerant
Pressure, these alarms are considered fatal and maintenance must be preformed in order to
allow the chiller to fully run. Should a compressor or pump turn off from an alarm condition
the remaining will shut down and display
FAULT
in the status screen for the device.
If a fault occurs, that compressor or circuit is deactivated. The load will automatically shift to
any other compressors that are currently ON-LINE, but not running. Lead/Lag rotation will
continue to function. Compressors that are faulted will be removed from the rotation order.
Once a device has gone offline you will need to contact a licensed professional (electrician or
refrigeration sevice company) to bring the device back online.
Caution!
Never attempt to service a unit until a qualified electrician has opened and
locked out the main disconnect using OSHA 1910.147 Standards.
WARNING!
Disconnect all power to the unit, let the unit cool down, and turn off the water prior to any
servicing.
Failure to do so can result in SERIOUS INJURY or DEATH!
