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2. Features
a) Maximum Water Supply Period – 6 minutes
The inlet water valve remains energized during harvest for 6 minutes or the length of
harvest whichever is shorter.
b) Harvest Backup Timer and Freeze Timer
The harvest backup timer shuts down the icemaker if, for two cycles in a row, the harvest
cycle takes more than 20 minutes to complete. The control board signals with the
"HTimer" LED and 2beeps every 3 seconds.
The freeze timer shuts down the icemaker if, for two cycles in a row, the freeze cycle
takes longer than the time specied by the freeze timer (S4 dip switch 9 & 10). The
control board signals with the "F Timer" LED and 3 beeps every 3 seconds. The freeze
timer is factory set and no adjustment is required.
To reset either of these safeties, press the "ALARM RESET" button on the control board
with power on.
c) High Temperature Safety
The temperature of the suction line in the refrigeration circuit is limited by the high
temperature safety. This protects the unit from excessively high temperatures. If the
evaporator temperature reaches 127±7°F (53±4°C), the control board reads a .8 kΩ
signal from the thermistor and shuts down the icemaker.
The control board signals with 1 beep every 3 seconds. To reset this safety, press the
"ALARM RESET" button on the control board with power on.
d) Low Water Safety
The control board checks the position of the oat switch at the end of the initial 1-minute
ll cycle and at the end of each harvest cycle. If the oat switch is in the up position
(electrical circuit closed), the control board proceeds to the next cycle. If the oat switch
is in the down position (electrical circuit open), the control board returns to the 1-minute
ll cycle until water enters the tank and the oat switch closes. Once the oat switch
closes, the control board proceeds to the next cycle. The unit should not start without
adequate water in the tank. This serves as a low water safety to protect the pump motor
from mechanical seal failure.
For water-cooled model, if the water is shut off, the unit is protected by the high-pressure
switch.
e) High Voltage and Low Voltage Cut-outs
The maximum and minimum allowable supply voltages of this unit are limited by the high
voltage and low voltage cut-outs.
Miswiring (especially on single phase 3 wire models) may cause excessive voltage
(147VAC±5% or more).
If high voltage (147VAC±5% or more) is present, the icemaker automatically stops and
the control board signals with 7 beeps every 3 seconds.
If low voltage (92VAC±5% or less) is present, the icmaker automatically stops and the
control board signals with 6 beeps every 3 seconds.
When the proper supply voltage is resumed, the icemaker automatically starts running
again.