Manitowoc Ice FLAKE/CHIPLET QF0400 - Manual (Page 116)

Electrical System Section 6
6-54 Part No. 80-1214-3
WATER FLOAT VALVE
Function
The float valve maintains correct water level during the
Freeze cycle.
It allows the evaporator to drain completely during the
Automatic Shut-Off cycle.
Check Procedure
1. Verify water is supplied to the float valve, the water
inlet screen is clean, and the float and float arm are
free moving.
2. Refer to the Energized Parts Chart and verify the
following:
• The float valve coil should be energized.
• The red water valve LED on the control board is
energized.
3. Check for line voltage at float valve coil. This test
must be performed within 90 seconds of the water
float valve energizing. If no water contacts the water
level probes within 90 seconds, the valve will de-
energize.
WATER LEVEL CHECK
The float valve maintains the correct water level. The
water level must allow the water level probes to maintain
water contact throughout the Freeze cycle. The water
level is factory set and normally will not require
adjustment. Check the water level during the Freeze
cycle. The water level is correct if the Water Level
indicator light is energized and no water is entering the
overflow tube. (Check for overflow water exiting the ice
machine drain line at the floor drain.)
If adjustments are necessary:
A. Rotate float clockwise to increase water level.
B. Rotate float counterclockwise to decrease water
level.
Verify the outlet for the water float valve is at a 20° to 30°
angle to prevent contact with the float.
Step 3 Check for Line Voltage
Voltage Reading Result
Line Voltage
Replace Solenoid Coil
or
Replace Valve
No Voltage
See
“Control Board Relays”
for further diagnostics.
WATER FLOAT
VALVE SOLENOID
COIL
VERIFY WATER
OUTLET DOES
NOT POINT
STRAIGHT DOWN;
IT MAY
INTERFERE WITH
FLOAT.
WATER FLOAT
VALVE
WATER LEVEL
PROBE
WATER FLOAT
ROTATE TO
ADJUST WATER
LEVEL.
Revised 8/2003