Hoshizaki IM-50BAA-LM Service Manual page 14

IM-50BAA-LM
1. Startup Cycle
When power supply is turned on, "on" appears on CB display and HGV energizes. 30
seconds later, harvest cycle starts.
• If the "RESET" button is pressed during 30-sec. startup cycle time, startup cycle ends
immediately and harvest cycle starts.
Note: CB display "on" LED remains on unless the 24VDC power supply to CB CN1 is
interrupted.
2. Harvest Cycle
When WT is below 55.4°F (13°C), WV energizes until ET reaches 50°F (10°C). When
WT is 55.4°F (13°C) or higher, WV energizes for 60 seconds. See the timing chart on
page 15.
3. Freeze Cycle
WV energizes for 24 seconds after freeze cycle starts. (PM starts operation at the same
time.) Then, WV energizes for 12 seconds after PM starts operation, and re-energizes
for 12 seconds after freeze cycle termination rate reaches 30%. See the timing chart on
page 15.
4. Shutdown
When BC is engaged (open) for 10 seconds during freeze cycle, freeze cycle continues
and harvest cycle starts as usual. After ET temperature reaches harvest cycle termination
temperature, shutdown occurs.
When BC is disengaged (closed) for 50 seconds before ET temperature reaches harvest
cycle termination temperature, harvest cycle starts as usual and operation continues.
If BC is engaged (open) for 10 seconds while AMU energizes, see the timing chart on
page 15.
If BC is engaged (open) for 10 seconds while AMD energizes, see the timing chart on
page 15.
Legend: AMD–actuator motor down; AMU–actuator motor up; BC–bin control; CB–
control board; ET–evaporator thermistor; HGV–hot gas valve; WV–inlet water
valve; PM–pump motor
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