Bin Control Check - Hoshizaki IM-500SAB Service Manual

D. Bin Control Check

1. Bin Control Check

This appliance uses a lever-actuated proximity switch to control the ice level in the
storage bin. No adjustment is required.
To check BC, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the control box cover. Clear any ice away from BC.
4) Check BC wire harness connections.
5) Disconnect BC wire harness connector from CB CN11 connector.
6) Check for continuity across the wires of BC wire harness connector. When the actuator
paddle is not engaged, BC switch is closed. If open, check that the wire harness
connector is properly connected and that the actuator paddle is not sticking. Clean
if necessary. See "II.D.2. Bin Control Cleaning." If BC switch still reads open, replace
BC.
7) Press and hold the actuator paddle; check for continuity across the wires of BC wire
harness connector. When the actuator paddle is engaged, BC switch is open. If closed,
check that the actuator paddle is not restricted. Clean if necessary. See "II.D.2. Bin
Control Cleaning." If BC switch still reads closed, replace BC.
8) Reconnect BC wire harness connector to CB CN11 connector, then move the control
switch to the "ICE" position. Turn on the power supply.
9) Allow the icemaker to cycle on. Press and hold the actuator paddle for at least 10 sec.
The icemaker should shut down. If it does not, replace CB.
Note: If BC is engaged (open) while the water tank is opening after the power supply
is turned on (or after the "RESET" button is pressed), shutdown does not start:
Shutdown occurs 10 seconds after actuator motor's internal position sensor
indicates water tank is fully open.
Cycle at
Mechanical Bin
Control Activation
Harvest Cycle
Freeze Cycle
Legend: BC–bin control; CB–control board
Shutdown
At the end of the harvest cycle, or up to 15 sec. into the freeze cycle if activated at the
end of the harvest cycle.
15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
protection timer terminates. Otherwise, at the end of the next harvest cycle.
15