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Harvest Sequence
5. Water Purge
The water pump continues to run, and the water dump
valve energizes for 45 seconds to purge the water in
the sump trough. The water fill valve energizes for the
last 15 seconds of the 45-second water purge. After
the 45-second water purge, the water fill valve, water
pump, and dump solenoid valve de-energize. The cool
vapor solenoids open at the beginning of the water
purge.
6. Harvest
The cool vapor valves remain open, and the
refrigerant warms each evaporator causing the cubes
to slide as a sheet, off the evaporator and into the
storage bin. The ice may fall first from either the right
or the left evaporator, or both at the same time. The
sliding sheet of cubes swings the water curtain out,
opening the corresponding bin switch and de-
energizing the cool vapor valve. The momentary
opening and reclosing of both bin switches terminates
the Harvest sequence and returns the ice machine to
the Freeze sequence (steps 3-4).
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