Manitowoc SD0302A Technician's Handbook page 74

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Freeze Sequence
3. Prechill
The compressor is on for 30 seconds (60 seconds
initial cycle) prior to water flow, to prechill the
evaporator.
Energized Control Board Lights-
Left Bin (green)
4. Freeze
The water pump restarts after the 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 and 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 10 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.
Energized Control Board Lights-
Left Bin (green), water probe (green), Harvest (red
when water contacts the ice thickness probe)
74
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Part Number 80-1479-3 7/10