Hoshizaki KM-350MWJ Service Manual page 27

2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the float 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 float switch bracket to release the float
switch assembly from the water tank.
5) Remove the spring retainer clip from the float switch rod, then remove the float.
Be careful not to bend the spring retainer clip excessively when removing it. See Fig. 6.
6) Wipe down the float switch bracket assembly, stem, and float 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 float switch assembly. This is
factory sealed and must not be removed.
7) Reassemble the float 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–float switch
Float Switch
Bracket Assembly
Float Switch Tab
Water
Sealed
Connections
Float Switch
Bracket Assembly
Float Switch
Stem
Float
Spring Retainer
Clip
Fig. 6
27
Water
Sealed
Connections
Float Switch
Stem
Spring Retainer
Clip
Float
Float Switch Tab