Float Switch Cleaning - Hoshizaki KMD-850MAH Service Manual

2. Float Switch Cleaning

Depending on local water conditions, scale may build up on the float switch. Scale on the
switch can cause the float to stick. In this case, the float switch should be cleaned.
1) Turn off the power supply.
2) Remove the front panel and move the control switch to the "OFF" position.
3) Remove the insulation panel. Remove cube guide B, then remove cube guide A.
Remove the overflow cap, overflow pipe, and water shield. See Fig. 1.
4) Remove the drain plug and drain the water tank. Replace the drain plug in its correct
position. Be careful not to cross thread it.
5) Replace the water shield, overflow pipe, overflow cap, cube guide A, and cube guide B
in their correct positions. Be careful not to cross thread the overflow pipe.
6) Disconnect the vent tube and flush tube from the top of the float switch, then remove
the float switch and rubber boot.
7) Remove the retainer rod from the bottom of the float switch assembly, then remove the
float. Be careful not to bend the retainer rod excessively when removing it.
8) Wipe down the float switch assembly's housing, shaft, float, and retainer rod and clean
the inside of the rubber boot and hose with a mixture of 1 part of Hoshizaki "Scale
Away" 25 parts of warm water. Rinse the parts thoroughly with clean water.
9) Reassemble the float switch assembly and replace it and the rubber boot in their
correct positions. Reconnect the vent tube and the flush tube.
10) Move the control switch to the "ICE" position.
11) Replace the insulation panel and front panel in their correct positions.
12) Turn on the power supply to start the automatic icemaking process.
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