Screw Compressor Central Chiller
Chapter 4: Operation
40
Active Alarm List and Alarm History Screens
These two screens let you view any active alarm conditions as well as the alarm history or the
entire history. The list of system alarms that are tracked are as follows:
x
Chilled Water High Temperature Alarm
x
Chilled Water Low Temperature Alarm
x
Compressor Motor Protector Fault (One for each compressor)
x
Chilled Water Circuit Low Flow (One per chilled water circuit)
x
Chilled Water Circuit Freezestat (One per chilled water circuit)
x
Chilled Water Circuit High Pressure (One per chilled water circuit)
x
Chilled Water Circuit Low Pressure (One per chilled water circuit)
x
Pump motor overload (One per system pump)
If an alarm condition occurs the follow screen is displayed:
Alarm Condition Screen
To acknowledge the alarm, press
F1
to clear the alarm. 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.
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.
All electrical connections must be done by a qualified electrician.
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!
