Scotsman MCM1462R Service Manual page 11

INITAL START UP
Before Start Up:
1. Check that the ICE-OFF-WASH rocker switch
and the COMPRESSOR ON-OFF toggle switch
are in the OFF position, on the control box.
2. Switch on the electrical power. Electrical power
must be supplied to the ice machine for 12 hours
before starting the compressor for the first time.
The crankcase heater will now heat the
compressor's oil. The oil is warmed to evaporate
any refrigerant that may have collected in it. If
there is refrigerant in the oil when the compressor
starts, the oil will foam and will not lubricate the
compressor properly, shortening its life.
Do NOT start the compressor for the first time
unless the dome of the compressor is warm.
Start Up
1. Remove front panel by removing screws at the
base and pulling out.
2. Remove two screws and the control box cover.
3. OPEN the water supply line shut off valve.
4. Open the "king" valve on the receiver.
5. Inside the control box is the shaft of the timer
and the switch assembly. Rotate the shaft of the
timer and switch assembly clockwise to start the
timer. The timer starts when the actuator arm on
the microswitch drops off outer cam into cam slot.
See "Front View of Timer".
6. Move the ICE-OFF-WASH to the ICE position.
7. Observe water fill cycle: Water pump operates
and water inlet solenoid valve OPENS, incoming
water flows from the valve through the tubing, the
reservoir fills and excess water is overflowed
through the stand pipe. This continues through the
harvest cycle (about 3 and a half minutes). When
the freeze cycle is started, the timer and relay will
close the water inlet solenoid valve and the water
fill cycle is complete. If the sump is not full, rotate
the timer once again to repeat the harvest cycle.
During any cycle the water pump is moving water
through the tygon tubes, up to the water distributor
at the top of each evaporator plate, where water is
uniformly dispensed and cascades down both
sides of the evaporator plates and drains back into
the sump assembly for recirculation.
8. When the sump has filled, move the compressor
ON-OFF toggle switch, to the ON position.
FRONT VIEW OF TIMER
ACTUATOR
BUTTON
CAM
FREEZE
PORTION
April, 1993
Page 11
MCM1462R
MICROSWITCH
HARVEST
PORTION
CONTROL BOX
TIMER
ICE/OFF/WASH
CUBE SIZE
CONTROL