– 10 –
*
Hung Slab: If the time between the start of a freeze cycle
and the start of the harvest cycle is less than
fi
ve minutes, the
control will count a hung slab.
Water System:
The reservoir drain pump is
activated (on for 20 sec., off 20 sec., back on for 20
sec.) to fully drain the reservoir. When fully drained,
the electronic control board sends a signal to the
water valve. The signal tells the measured
fi
ll water
inlet valve how much water is to be
fi
lled, allowing
water to
fl
ow into the water reservoir pan. The water
fi
ll volume is determined by the ice thickness setting.
Thin Ice uses 32oz (954cc), Normal Ice uses 37oz
(1106cc) and Thick Ice uses 42.5oz (1258cc).
Note:
Two minute maximum
fi
ll. The cycling
between freeze and harvest continues until the ice
bin is full. The electronic control board operates the
various components and systems in the icemaker
for each of the freeze and harvest modes.
Clean Mode
(CLEAN LED on Amber, then Red)
The CLEAN LED turns from green to amber, then to
red. The CLEAN LED will turn from green to amber
after 50 hung slabs* or 3500 freeze cycles. The
CLEAN LED will then turn to red after 70 hung slabs*
or 4000 freeze cycles.
With the CLEAN LED on red and steady, the unit
must be cleaned to turn it off. When the clean cycle
is complete (approximately 70 minutes), the CLEAN
LED will be green and the OFF LED will be red.
Select and hold the
OFF
pad for 3 seconds to turn
the unit off. Then press the
ON
pad to turn the unit
on. Customer instructions for Clean Cycle are on the
inside of the door.
Harvest Mode
Electrical System:
When the water level in the
reservoir drops below the water level sensor, it
signals the electronic control to terminate power to
the condenser fan, and then the water recirculating
pump. The reservoir drain pump is activated (on for
20 sec., off 20 sec., back on for 20 sec.), to fully drain
the reservoir. Power is then supplied to the hot gas
valve and a
fi
ll request is sent to the measured
fi
ll
water inlet valve. The
fi
ll valve
fi
lls to the requested
volume while the hot gas valve is energized for
the balance of the harvest mode. If the evaporator
thermistor is unplugged, the evaporator defaults to
a timed 4-minute harvest.
If the water level sensor is disconnected or open, the
control defaults to 25 minutes of freeze time. The
cleaning indicator LED feature will not function if the
water level sensor is disconnected.
Refrigeration System:
The hot gas valve opens,
allowing high-pressure refrigerant gas to bypass
the condenser, and
fl
ow 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 refrigerant 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.
As a result of the hot gas
fl
ow and the ice sliding off
the evaporator plate, the evaporator temperature
begins to rise. When the evaporator thermistor
reaches the set temperature (52°F), the unit switches
to the Freeze Mode.
(Continued next page)
