Normal Harvest Cycle - Hoshizaki KML-351MAH Service Manual

5. Normal Harvest Cycle

LEDs 1, 4, and 2 are on. Comp and FMR remain energized, FMS de-energizes and
HGV and WV energize. The control board monitors the warming of the evaporator via
the thermistor located on the suction line. When the thermistor reaches 48°F (9°C), the
control board reads a 3.9 kΩ signal from the thermistor and turns harvest termination
over to the adjustable harvest timer (dip switch 1 & 2) which is factory set for normal
conditions. The harvest timer has settings of 60, 90, 120, and 180 seconds. For
further details, see "II.C.3.b) Harvest Timer (dip switch 1 & 2)." When the harvest timer
completes its countdown, the harvest cycle is complete and the freeze cycle starts.
The minimum total time allowed by the control board for a complete harvest cycle is
2 minutes. WV is energized during harvest for a maximum of 6 minutes or the length
of harvest, whichever is shorter. At the end of harvest, the control board checks the
position of F/S and proceeds to the freeze cycle if it is closed or calls for a 1-minute fill if
it is open.
Legend: Comp–compressor; DV–drain valve; FMR–remote fan motor;
FMS–self-contained fan motor; F/S–float switch; HGV–hot gas valve;
LLV–liquid line valve; PM–pump motor; SR–service relay; WV–inlet water valve
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