Bin Control Check; Float Switch Check And Cleaning - Hoshizaki KMS-1122MLH Service Manual

D. Bin Control Check
To check BC, follow the steps below.
When the ambient temperature is below 45°F (7°C), BC switch opens and
shuts down the appliance even if the ice storage bin is empty. When BC is
set in the prohibited range, the appliance operates continuously even if the ice
storage bin is filled with ice. Setting in the prohibited range may result in severe
damage to the appliance.
BC is factory set, and generally no adjustment is required. However, adjustment may be
needed in some conditions, particularly at higher altitude locations.
Note: • When BC switch is open, CB red "POWER OK" LED is off.
• CB yellow "BC OPEN" LED is on if CB red K4 connector does not have the
jumper in place.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Clear any ice away from BC bulb.
4) Remove the control box cover, then disconnect BC wires from BC switch.
5) Hold your hand around BC bulb to warm it up.
6) Check for continuity across BC switch. If closed, continue to step 6. If open, adjust or
replace BC.
7) With the multimeter test leads still in place, hold ice on BC bulb to lower the temperature
Within 10 sec., BC switch should open. If it remains closed, adjust or replace BC.
Legend: BC–bin control; CB–control board
E. Float Switch Check and Cleaning
FS is used to confirm sufficient water in the water tank after the 1-min. fill cycle and
after each harvest cycle. FS is also used to terminate the freeze cycle. No adjustment is
required.
1. Float Switch Check
To check FS, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel.
3) Place the control switch in the "SERVICE" position. Then place the service switch in the
"DRAIN" position.
4) Replace the front panel in its correct position, then turn on the power supply for 2 min.
5) Turn off the power supply.
6) Remove the front panel, then move the control switch to the "OFF" position.
NOTICE
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