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Operational Checks
E. The unit now starts its first freezing cycle with
the following components in operation:
·
Compressor
·
Water Pump
·
Fan Motor
F. Look through the ice discharge opening and
confirm that the spray system is correctly seated
and that the water jets uniformly reach the interior
of the inverted cup molds; also make sure that the
plastic curtain is hanging freely and excessive
water is not flowing through it.
G. During the freeze cycle, the evaporator will
remove heat from the water sprayed into the ice
making molds and warm air will be discharged
from the cabinet.
H. When the evaporator temperature reaches a
preset value the evaporator thermostat or cube
size control changes its contacts; the freezing
cycle ends and starts the defrost or harvest cycle.
Freezing time will range between 20 and 22
minutes in a 70
o
F ambient temperature. Longer
time for temperature above, shorter when below.
Average complete cycle range is about 23 to 25
minutes.
I. Check, during the first defrost/harvest cycle, that
the incoming water flows correctly into the sump to
re-fill it and the surplus overflows through the
overflow drain tube.
J. Check the size and shape of the ice cubes just
released. Right size must have a small depression
about 3/16” in their crown. If not, wait for the
second defrost/harvest cycle before performing
any adjustment.
K. If required, adjust the length of the freezing
cycle by turning the knob of the cube size control
or evaporator thermostat located in front of the
control box until the correct ice cube size is
achieved.
If the ice cubes are shallow and cloudy, it is
possible that the ice maker runs short of water
during the end of the freezing cycle or, the quality
of the supplied water requires the use of an
appropriate water filter or conditioner.
L. During the defrost or harvest cycle hold a
handful of ice cubes against the bulb of the storage
bin thermostat; the ice machine switch OFF in
about one-two minutes.
Remove the ice from the storage bin thermostat.
The ice maker should restart automatically in
three-four minutes.
NOTE. The bin thermostat is factory set at 1
o
C
(35
o
F) OUT and 4
o
C (39
o
F) IN.
M. Re-attach the front panel, then instruct the
owner/user on the general operation of the ice
machine and about the cleaning and care it
requires.
ICEU070A
Page 7
Small
Indent
Normal Size and Shape
Shallow Cube
Cube too Small
Thick Bulge
Oversized