112 Part Number 80-1505-3 6/11
2. Refrigeration System Start-Up
Ice Machine Head Section: The liquid line solenoid
valve and water inlet valve energize. Five seconds
later single and twin evaporator models de-energize
the harvest valve(s) and air compressor (when used).
CVD Condensing Unit:
When the refrigerant pressure is high enough to close
the low-pressure control the contactor coil energizes
and the compressor starts.
The compressor and fan cycling control* are supplied
with power throughout the entire Freeze and Harvest
Sequences. When the refrigerant pressure is high
enough to close the fan cycling pressure control the
condenser fan motor starts.
*The IB0680C & S0680C ice machines do not use a
fan cycling control. The compressor and the
condenser fan motor are wired through the contactor.
Any time the contactor coil is energized, these
components are supplied with power.
Energized Control Board Lights-
Single Evaporators = Left Bin (green)
Twin Evaporators = Left & Right Bin (green)
Quad Evaporators = All Curtain Switches (green),
Water Solenoid (red), Liquid Solenoid (red)
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