Hoshizaki KM-40B, Service Manual

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occurs on the 2nd harvest after startup. Then, depending on the control board setting,
drain cycle occurs every cycle, or every 2nd, 5th, or 10th cycle (S1 dip switch 5 & 6).
[e] NORMAL HARVEST CYCLE
LEDs 5, 6, and 8 are on. Comp continues to run, HGV remains open and WV opens. As
the evaporator warms, the thermistor reaches 9°C. The control board then receives the
thermistor’s 3.9 kΩ signal and starts the harvest timer. WV is open during harvest for a
maximum of 6 minutes or the length of harvest minus 0, 10, 30, or 50 seconds (adjustable
by S1 dip switch 7 & 8), whichever is shorter. LED 8 goes off when WV closes. PM
energizes and runs for the last 0, 10, 30, or 50 seconds of harvest depending on S1 dip
switch 7 & 8 setting. LED 7 comes on when PM energizes. 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.
The unit continues to cycle through [c], [d], and [e] sequence until the bin control is
activated and shuts the unit down. When the bin control is activated, the “POWER OK”
LED flashes.
Legend:
Comp
–compressor;
DV
–drain valve;
FMS
–self-contained fan motor;
F/S
–float
switch; HGV –hot gas valve; PM –pump motor; WV –inlet water valve