Freezing Cycle Operation - Scotsman MCM1462 Service Manual

MCM1462

FREEZING CYCLE OPERATION

Water from the sump assembly is pumped to the
water distributor system at the top of each
evaporator plate. From the water distributor the
water cascades by gravity over all cells of the plate
WATER DISTRIBUTION
and to the sump assembly below.
At the beginning of the freezing cycle, the electrical
INLET
circuit is completed to the compressor and the
WATER
water pump. The water pump operates
VALVE
continuously, through both the freezing cycle and
the harvest cycle.
During the freezing cycle, the hot gas solenoid
valve and the water inlet solenoid valve are
CLOSED. When the ice cubes are partially
formed, the cube size control (sensing bulb
attached to the suction line) will CLOSE, and
connect power to the timer motor. The timer then
controls the remainder of the freezing cycle. The
timer will keep the icemaker operating in the
DRAIN RESERVOIR
freezing cycle for a selected length of time. This
will give the ice cubes time to fully form. after
WATER SCHEMATIC
which, the timer will switch the icemaker into the
harvest cycle, through the contacts of the timer
assembly microswitch.
HOT GAS VALVE
FAN MOTOR
CONDENSER
WATER
MANIFOLD
EVAPORATOR
WATER
INLET
VALVE
DISCHARGE
ACCUMULATOR WATER PUMP
COMPRESSOR
RESERVOIR
LINE
REFRIGERATION SCHEMATIC
April, 1993
Page 10