Float Switch Check And Cleaning; Float Switch Check - Hoshizaki KMD-450MAH Service Manual

4) Disconnect the harness connector from the bin control switch connector, then remove
the bin control from the unit.
5) Remove the actuator paddle from the switch mount. See Fig. 5.
6) Wipe down the bin control with a mixture of 1 part recommended cleaner Hoshizaki
"Scale Away" and 25 parts warm water. Rinse the parts thoroughly with clean water.
7) Reassemble the bin control and replace it in its correct position.
8) Reconnect the harness connector.
9) Move the control switch to the "ICE" position.
10) Replace the front panel in its correct position.
11) Turn on the power supply to start the automatic icemaking process.
D. Float Switch Check and Cleaning
Switch Mount
Actuator Paddle

1. Float Switch Check

To check the float switch, follow the steps below.
1) Remove the front panel and move the control switch to the "SERVICE" position. Move
the service switch to the "DRAIN" position.
2) Allow the water to drain from the tank, then move the control switch to the "OFF"
position.
3) Turn off the power supply.
4) Disconnect the wire connector from the control board K1 nine-pin connector. See "II.
C.1. Control Board Layout."
5) Check for continuity across the red wires (1 & 3) of the wire connector. With the water
tank empty, the float switch is open. If open, continue to step 6. If closed, follow the
steps in "IV.D.2. Float Switch Cleaning." After cleaning the float switch, check it again.
Replace if necessary.
Bin Control
Switch Connector
Fig. 5
38
Wire Connector
Harness
(To Control Board
Connector
K1 nine-pin connector)