3-5HARVEST CYCLE
Electrical System
When the set temperature of the evaporator
thermistor is reached, it signals the electronic
control to terminate power to the condenser
fan, and the water recirculating pump. Power is
then supplied to the hot gas valve and water fill
valve solenoids.
If the evaporator thermistor is unplugged, the
control defaults to the maximum freeze and
harvest times.
Refrigeration System
The hot gas valve opens, allowing high pres-
sure refrigerant gas to bypass the condenser,
and flow through the condenser accumulating
tube. The hot gas pushes the liquid refrigerant
that has accumulated in the accumulator tube
up into the evaporator. The hot liquid refriger-
ant evenly heats the evaporator plate so that
the ice slab releases quickly and evenly.
The ice slab, when released, slides off of the
evaporator plate onto the cutter grid.
Water System
The water valve opens, allowing water to flow
into the water reservoir pan. As the reservoir
fills, the mineral-laden water from the previous
Ice Making cycle, is flushed out the overflow
tube.
As a result of the hot gas flow and the ice sliding
off the evaporator plate, the evaporator tem-
perature begins to rise. When the evaporator
thermistor reaches the set temperature (6.5°F),
the unit switches to the Ice Making cycle. This
cycling between Ice Making and Harvest, con-
tinues until the ice bin is full.
The electronic control board controls the vari-
ous components and systems in the ice maker
for each of the Ice Making and Harvest cycles.
When the ice maker’s service control switch is
in the “On” position, and the bin is not full of ice,
the evaporator thermistor determines whether
the unit will be in the Ice Making, or the Harvest
cycle.
If the thermistor is unplugged from the control
board, the unit will cycle using maximum freeze
and harvest times.
DIAGNOSTICS / CLEAN CYCLE
Electrical System
Power is supplied to the electrical components
through the service control switch.
The electronic control board controls the vari-
ous components and systems during the Diag-
nostics/Clean cycle. During the first 25 sec-
onds of the cycle, each component will operate
for 5 seconds.
For the order of the components cycled, see
the flow chart on page 6-5.
Water System
When the service control switch is in the ‘’Clean”
position, the water recirculating pump circu-
lates the cleaning solution that has been added
to the reservoir, up to the water distributor,
across the evaporator, and back into the reser-
voir, where it is recirculated.