Harvest Cycle Operation - Scotsman MCM1462 Service Manual

MCM1462
HARVEST CYCLE - HOT GAS BYPASS
When the timer switches the icemaker into the
harvest cycle, the finish relay is de-energized, and
WATER
the hot gas valve and inlet water valve OPEN.
DISTRIBUTION
Then high pressure, high temperature gas
refrigerant being discharged from the compressor
is diverted from the condenser through the hot gas
INLET
solenoid valve into each evaporator plate. During
WATER
this cycle, the refrigerant bypasses the condenser.
VALVE
Both the compressor and the water pump are
operating.
The finished ice cubes are released from the sides
of each evaporator plate by the warming effect of
the hot gas condensing in each evaporator plate
and the water cascading over the ice cubes. The
released ice cubes drop into the ice storage bin
below. At the end of the harvest cycle, the timer
cam will push in the microswitch actuator arm. If
DRAIN RESERVOIR
there is no ice close to the bin level control's
transducer, a whole new cycle will begin. If there is
ice within 8" of the base of the machine (when the
WATER SCHEMATIC
bin level control is set for full) the icemaker will
shut OFF.
WATER
HOT GAS VALVE
FAN MOTOR
MANIFOLD
CONDENSER
EVAPORATOR
WATER
WATER
INLET
PUMP
VALVE
DISCHARGE RESERVOIR
ACCUMULATOR
COMPRESSOR
LINE
REFRIGERATION SCHEMATIC
April, 1993
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