Float Switch Cleaning - Hoshizaki C-100BAF Service Manual

2. Float Switch Cleaning

Depending on local water conditions, scale may build up on F/S. Scale on F/S can
cause inconsistent operation of UF/S and LF/S. In this case, F/S should be cleaned and
checked.
1) Move the power switch to the "OFF" position, then unplug the unit from the electrical
outlet.
2) Remove the upper rear panel. See Fig. 4.
3) Remove F/S assembly from the reservoir cover.
4) Wipe down F/S assembly with a mixture of 1 part Hoshizaki "Scale Away" and 25 parts
warm water. Rinse the assembly thoroughly with clean water.
5) While not necessary, the floats can be removed from the shaft during cleaning. If you
remove them, note that the blue float is on top (UF/S) and the white float is on bottom
(LF/S). See Fig. 5. The floats must be installed with the magnets inside them towards
the top of the switch. Installing the floats upside down will affect the timing of F/S
operation.
6) Rinse F/S assembly thoroughly with clean water and replace in its correct position.
7) Replace the upper rear panel in its correct position.
8) Plug the unit into the electrical outlet, then move the power switch to the "ON" position
to start the automatic icemaking process.
Legend: F/S–float switch; LF/S–lower float switch; UF/S–upper float switch
Fig. 5
UF/S (R wire)
Common (BK wire)
LF/S (DBU wire)
Magnet (towards top)
Upper Float (blue)
Spring Retainer Clip
Magnet (towards top)
Lower Float (white)
Plastic Retainer Clip
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