Controls and Sequence of Operation
Cooling (Ice Cooling Mode)
Startup Sequence (call for cooling)
1.
Refrigerant Pump and Solenoid Valve are energized and Water Pump starts.
2.
Refrigerant Pump is initially set to minimum speed. (Cooling LED repeatedly blinks twice.)
3.
There is a 10 second delay.
4.
Refrigerant Pump is set to its final speed. (Cooling LED on solid until call for cooling ends, ice is
exhausted, or system transitions out of the configured ice cooling time window, as determined by
unit’s specific configuration.)
Shutdown Sequence (no call for cooling)
1.
Water and Refrigerant Pumps shut down.
2.
There is a 15 second delay.
3.
Individual zone relay is closed.
Full Discharge Cutoff Sequence
1.
Discharge cutoff condition is achieved; i.e., cutoff pressure is reached (typically 165 psia) or the
Tank water reaches a temperature of 48 °F (typical).
2.
There is a 5 minute delay.
3.
Refrigerant and Water Pumps are shut down.
4.
There is a 15 second delay.
5.
Individual zone relays are closed, if defined.
16 Ice
Bear
®
30 Unit Application Guide