Sequence Of Operation Cuber Only - Cornelius ICE MAKER Pocket Manual

SEQUENCE OF OPERATION
CUBER ONLY
After the installation of the water lines from the primary water
supply, the float valve will be open and remain open until the
reservoir is filled to the proper level. (1/4" below the support).
Note: Primary water supply must not be less than 20 psi, nor
mor then 50 psi on Float Valves with no Flow Washer, or 125
psi for Float Valves with Flow Washer.
When the on–off clean switch is in the "clean" position the
water pump will run. All other components are off. When the
switch is in the "on" position the compressor will be ener-
gized, after a short delay the fan will come on. When the
temperature of the evaporator reaches 20°F the sensor in
the evaporator tells the control board to turn the pump on.
When the evaporator sensor, senses an approximate tem-
perature of 0°F it tells the control board to switch to the har-
vest mode.
In the harvest cycle the pump will remain engaged for
approximately 12 seconds. The compressor, hot gas valve
and dump solenoid will be engaged. When the ice is har-
vested, the curtain opens, breaking the magnetic field to the
proximity switch and the unit will return to the "Freeze" cycle.
If the curtain remains open, after approximately 8 seconds
the unit will shut down, indicating the bin is full. Note: On
units that are stacked, an interface cable connects the two
control boards. When the bottom unit shuts off due to a full
bin, the top will continue to operate until it completes the
cycle it is in and then will shut off on full bin (#2).
To check the control board: When the unit is in the freeze
cycle, power should be to the compressor, fan motor and
water pump (after evaporator reaches 20°). There should be
no power to the hot gas valve or the dump solenoid. When
the unit is in the defrost cycle, there should be power to the
compressor, hot gas solenoid, and dump solenoid. (The
pump will have power for approximately 12 seconds into the
defrost cycle).
TD 184
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