CHAMPION PP-28 Manual - Manual (Page 32)

24
ELECTRICAL SERVICE
Dual Float Troubleshooting Diagrams:
Dual Float Switches –
Troubleshooting:
The dual float controls fill and heat circuits.
Identifying a Dual Float Problem:
The most common trouble conditions associated with a dual float failure are:
1. The tank fills constantly.
2. The tank heat will not come on.
Inspect the Dual Float:
1. Be sure that the dual float assembly is clean and free of scale build-up.
2. Be sure that the stainless steel balls on the float assembly move up and down freely.
In addition to checking the float operation, perform the following—
System Checks:
1. All drain valves are fully closed.
2. Incoming water supply Flow Pressure is 20-22 psi [138-151 kPa].
3. Fuses in control cabinet are good (Electric Heat Only).
4. Tank Heat thermostats and/or High limit thermostats operate correctly.
5. Booster Heat thermostats and/or High limit thermostats operate correctly.
YES
Water Shuts OFF
Machine is in
Final Rinse Mode
Not a Dual Float
Problem
System
Checks
System
Checks
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
Wash or Prewash
Tank Fills Constantly T T
Is Tank Ful T T l
of Water?
Are the Float
Balls Up?
Close
Drain
Valve
Clean
Float
Assy
Is Heat ON
when called
for?
Replace
Dual
Float
Check
Solenoid
Valve Are the Float
Balls Up?
Check
Solenoid
Valv V V e
Is Heat ON
when called
for?
Replace
Dual
Float
Clean
Float
Assy
Close
Drain
Valve
V V
Is Tank Ful T T l
of Water?
Check to ensure
that
Rinse-Saver Lever
is not
Operated
Water Runs Constantly
Through Final Rinse Piping