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Manitowoc Q450 - Freeze Sequence

Manitowoc Q450
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–14–
Freeze Sequence
3. Prechill
The compressor is on for 30 seconds prior to water
flow to prechill the evaporator.
4. Freeze
The water pump restarts after the 30-second prechill.
An even flow of water is directed across the
evaporator and into each cube cell, where it freezes.
The water fill valve will cycle on, then off one more
time to refill the water trough.
When sufficient ice has formed, the water flow (not the
ice) contacts the ice thickness probe. After
approximately 7 seconds of continual water contact,
the Harvest sequence is initiated. The ice machine
cannot initiate a Harvest sequence until a 6-minute
freeze lock has been surpassed.

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