Service Manual

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2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the oat to stick. In this case, FS should be cleaned.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the base cover, disconnect the water tank end of the pump tubing to drain the
water tank. See Fig. 5. After the water tank has drained, reconnect the pump tubing.
4) Remove the cube guide, then pull the tab on the oat switch bracket to release the oat
switch assembly from the water tank.
5) Remove the spring retainer clip from the oat switch rod, then remove the oat.
Be careful not to bend the spring retainer clip excessively when removing it. See Fig. 6.
6) Wipe down the oat switch bracket assembly, stem, and oat with a mixture of 1 part
Hoshizaki "Scale Away" and 25 parts warm water. Rinse the parts thoroughly with clean
water. WARNING! Do not remove the lock nut on the oat switch assembly. This is
factory sealed and must not be removed.
7) Reassemble the oat switch assembly and replace it in its correct position.
8) Move the control switch to the "ICE" position.
9) Replace the base cover, cube guide, and front panel in their correct positions.
10) Turn on the power supply to start the automatic icemaking process.
Legend: CB–control board; FS–oat switch
Fig. 6
Float
Spring Retainer
Clip
Float Switch
Stem
Water
Sealed
Connections
Float
Spring Retainer
Clip
Water
Sealed
Connections
Float Switch
Bracket Assembly
Float Switch Tab
Float Switch
Bracket Assembly
Float Switch Tab
Float Switch
Stem