Bin Control Check And Cleaning; Bin Control Check - Hoshizaki Serenity KMS-822MLH Service Manual

C. Bin Control Check and Cleaning
This unit uses a BC with a lever-actuated proximity switch to control the ice level in the
storage bin. No adjustment is required. BC is connected to CB red K4 connector. When
calling for ice, BC proximity switch is closed (green "BC CLOSED" LED on). When BC
actuator paddle is engaged, BC proximity switch opens (yellow "BC OPEN" LED on) and
CB shuts down the unit according to the chart below.
Cycle at
Mechanical Bin
Control Activation
Fill Cycle
Harvest Cycle
Freeze Cycle

1. Bin Control Check

To check BC, follow the steps below.
1) Turn off the power supply and clear any ice away from BC.
2) Remove the front panel, top panel, and right side panel, then move the control switch to
the "OFF" position.
3) Remove the control box cover.
4) Disconnect the red BC connector from CB RED K4 connector.
5) If BC is accessible from the dispenser unit/storage bin, continue to step 7. If BC is
not accessible from the dispenser unit/storage bin, follow the instructions below to
remove BC.
a. Loosen the screws securing the control box, then lift the control box off and hang it
from the base. See Fig. 1.
b. Remove the insulation. Remove the thumbscrews securing the bin control assembly,
then remove the bin control assembly.
6) Check for continuity across the wires of the red connector. When the actuator paddle is
not engaged, BC switch is closed. If open, check that BC cable connector is properly
connected and that the actuator paddle is not sticking. Clean if necessary. See
"IV.C.2. Bin Control Cleaning." If BC switch still reads open, replace BC.
7) Press the actuator paddle, check for continuity across the wires of the red 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 "IV.C.2. Bin Control Cleaning."
If BC switch still reads closed, replace BC.
8) If the control box was removed, replace it in its correct positon.
9) Reconnect the red connector to CB RED K4 connector, then move the control switch to
the "ICE" position.
10) Turn on the power supply.
11) Check that the green "BC CLOSED" LED on CB is on.
Shutdown
15 seconds after activation.
At the end of the harvest cycle, or up to 15 seconds into the freeze cycle if activated
at the end of the harvest cycle.
15 seconds after activation if activated at least 15 seconds before the 5-minute short
cycle protection timer terminates. Otherwise, at the end of the next harvest cycle.
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