Hoshizaki KMD-450MAH Service Manual page 64

8) In bad or severe water conditions, clean the float switch as described below. Otherwise,
continue to step 9.
a. Remove the 2 thumbscrews securing insulation panel (B), then remove insulation
panel (B). See Fig. 14.
b. Disconnect the discharge hose, the drain valve drain hose, and the overflow drain
hose.
c. Disconnect the pump motor connector and the float switch connector from the side
of the control box.
d. Remove the 2 thumbscrews securing the pump motor and float switch assembly.
See Fig. 15.
e. Pull out the water tank, cube guide, and pump motor and float switch assembly
together.
f. Remove the screw securing the float switch to the top of the assembly. Remove the
float switch from the assembly.
g. Remove the retainer rod from the bottom of the float switch, then remove the float.
Be careful not to bend the retainer rod excessively when removing it.
h. Wipe down the float switch housing, shaft, float, and retainer rod with cleaning
solution. Rinse the parts thoroughly with clean water.
i. Reassemble the float switch. Replace the float switch in its correct position, then
secure with the screw.
j. Replace the removed parts in the reverse order of which they were removed.
9) Pour the cleaning solution into the water tank.
10) Move the service switch to the "WASH" position.
11) Replace insulation panel (A) and the front panel in their correct positions.
12) Turn on the power supply to start the washing process.
13) Turn off the power supply after 30 minutes.
14) Remove the front panel.
15) Move the service switch to the "DRAIN" position.
16) Replace the front panel in its correct position, then turn on the power supply for
2 minutes.
Drain Valve
Discharge Drain Hose
Hose
Fig. 14
Pump Motor
Connector
Float Switch
Connector
Thumbscrews
Overflow
Insulation
Drain Hose
Panel (B)
Water Tank
Fig. 15
64
Thumbscrews
Pump Motor
and Float
Switch
Assembly
Cube Guide