Jackson 100 B/PRB Service Manual page 35

TROUBLE SHOOTING GUIDE
PROBLEM
Wash Pump leaks
Rinse and fill switch is on but water does not
come through rinse tubes
When master switch is on rinse runs
continually
Machine goes through entire cycle and shuts
off, but rinses throughout the cycle
Master switch off, rinse runs continually as
soon as power is applied to machine
Extremely high rinse temperature indication
CAUSE
1- Impeller seal is worn (leaks
around shaft)
2- Pump assembly is not seated to base of
machine (leaks around mounting plate).
1- Valve in water line is not open
2- Rinse tubes are clogged
3- Strainer in water line is full of scale
4- Rinse and fill switch faulty
5- Electric solenoid diaphram or plunger not
operating
6- Coil on the solenoid valve is burned out.
7- Insufficient or excessive pressure
1- Water level control faulty
1- Defective rinse microswitch
1- Master & rinse switch faulty
2- Loose green ground wire from
water level control
1 - Thermostat set too high.
2- Thermostat faulty
34
SOLUTION
1- Remove and inspect pump and motor
assembly, see instruction page on pump
seals and ceramic replacement
2- Replace gasket. Make sure mounting
nuts are tight
1- Check to make sure all valves are open
2- See Preventive Maintenance
3- See Preventive Maintenance
4- Check rinse and fill switch
5- Remove diaphram and plunger, flush
and clean. see instruction page on
Solenoid Valves
6- See #5 above
7- Check flow pressure which should not
exceed 25 PSI or go below 15 PSI
1- Check instruction page on water level
controls
1 - Check timer, instruction page
1- Replace rinse and/or master switch 2-
Tighten ground wire or see instruction
page on solenoids
1- Adjust thermostat control, see instruction
page on thermostat
2- Replace