Scotsman CME855A - Manual (Page 12)

ADJUSTMENT OF THE TIMER & SWITCH ASSEMBLY
One complete revolution of the cam on the timer
represents eight minutes. If left as factory set, the
timed freeze cycle will be 5 minutes 15 seconds,
and the harvest cycle will be 2 minutes 45
seconds. Rotating the shaft of the timer cam
Clockwise will put the ice machine into the freeze
or harvest cycle.
WARNING
Disconnect electrical power supply to ice maker
whenever adjustment procedures are performed.
To adjust the timer & switch assembly:
1. Remove front panel.
2. Remove control box cover.
A. To start the HARVEST CYCLE: Slowly rotate
the shaft of the timer and switch assembly,
clockwise until the actuator arm on the
microswitch initiates the harvest cycle. An audible
click can be heard, but in a noisy area, look at
the cam and switch to observe the event
B. To start the FREEZING CYCLE: Slowly rotate
the shaft of the timer and switch assembly
clockwise until the actuator arm on the
microswitch initiates the freezing cycle.
C. To adjust the length of the harvest cycle:
1. Loosen the adjustment screw on the cam and
rotate the shaft of the cam to move the cam. More
of a gap between the high and low portions will
yield more harvest time.
2. Tighten the set screw.
3. Replace the control box cover and front panel.
It is important that the length of the harvest cycle
allow enough time for all the ice cubes to fall from
the evaporator. Too short of a time will cause the
evaporator to freeze up and stop ejecting ice into
the bin. Too much time wastes ice making
capacity, energy and water. Adjustment of the
harvest cycle may require an adjustment of the
cube size control.
TIMER CAM POSITIONS
MICROSWITCH
ACTUATOR
CAM &
SHAFT
HARVEST
PORTION
FREEZE
PORTION
TIMER ADJUSTMENT
MICROSWITCH
SHAFT OF
CAM
SET SCREW
CME855A & CME1000A
December, 1994
Page 12