Hoshizaki KM-260BAH - Manual (Page 15)

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the control board setting, pump-out 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 48°F (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 fi ll 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 fl ashes.
[f] SHUTDOWN
When BC is activated (BC open), the “POWER OK” LED flashes. There is a delay
before the shutdown sequence begins. The delay varies depending on the cycle the
icemaker is in at the time of activation. For details, see the table below.
Cycle at Bin Control Activation Delay Before Shutdown Sequence Begins
Fill Cycle
15 seconds
Harvest Cycle 15 seconds after the next freeze cycle starts
Freeze Cycle 15 seconds if BC is activated between the beginning of
freeze and termination of the 5-minute short cycle protection
timer (timer starts when the thermistor temperature drops to
36°F (2°C) (5.5 kΩ or more)). After this time, the unit will not
shut down until the next harvest cycle is complete.
After the delay, all components de-energize. DV energizes after 2 seconds. PM
energizes after 2 seconds. PM takes water from the tank and forces it through DV and
down the drain. The water tank drains for a maximum of 5 minutes or until F/S opens.
DV and PM (if applicable) then de-energize. When BC closes again calling for ice, the
unit starts at the 1-minute fi ll cycle. There is a 90-second minimum off time before the
icemaker can restart.
Legend: BC–bin control; Comp–compressor; DV–drain valve; FMS–self-contained fan
motor; F/S–fl oat switch; HGV–hot gas valve; PM–pump motor; WV–inlet water
valve