User Manual

40 Part Number 000014141 Rev 07 2/20
Operation Section 3
Safe Operation Mode
Allows the ice machine to operate up to
72 hours if the ice thickness probe and/or
water level probe sensors fail.
• When the control board starts the safe
mode, an alert is flashed on the display
to notify the end-user they have a
production problem.
• The control board automatically initiates
and monitors the safe mode. The control
will automatically exit the safe mode if a
normal signal is received from the input.
• After 72 hours, the control board will
enter a standby mode and turn off.
NOTE: The control board needs a five cycle
history to operate safe mode. If five cycles
have never been successfully completed
the ice machine will shut-off.
Water Assist Harvest
When the damper/curtain does not open
within 3.5 minutes in the harvest cycle the
following occurs:
• 3.5 minutes - The water inlet valve
energizes until water touches the high
water level probe.
• 4 minutes - The water pump energizes.
• 6.5 to 7 minutes - The water dump valve
energizes.
Water Thaw Cycle
When the damper/curtain does not open
during the 7 minute harvest cycle the
following water thaw cycle occurs:
• 7 minutes - The compressor, harvest
solenoid valve and dump valve de-
energize.
1. The water pump remains energized
and the water inlet valve energizes
until water touches the high water
level probe.
2. Water is circulated over the
evaporator.
3. Water is circulated, dumped and
refilled to the high water level probe
for approximately 1 hour.
• At the end of the thaw cycle the ice
machine will start another freeze cycle
(approximately 1 - 1.75 hour).