Jackson DISHSTAR HT-E Installation, Operation And Service Manual page 28

TROUBLESHOOTING
WARNING! Inspection, testing, and repair of electrical equipment should only be performed by qualified service
!
personnel. Certain procedures in this section require electrical tests or measurements while power is applied
to the machine. Exercise extreme caution at all times. If test points are not easily accessible, disconnect
WARNING
power, attach test equipment, and reapply power to test. When replacing electrical parts, disconnect power at
circuit breaker.
PROBLEM POSSIBLE CAUSE
Rinse water runs 1. Defective plunger in solenoid valve.
continuously
with breaker 2. Defective diaphragm in solenoid valve.
turned off.
Wash 1. Water level low.
temperature not
within range. 2. RTD setpoint too low.
3. Defective RTD.
4. Wash heater defective.
5. Defective heater contactor R1.
Rinse 1. RTD is defective.
temperature not
2. Incoming rinse water does not
within range.
meet minimum criteria indicated
machine data plate.
i
3. Rinse heaters damaged.
4. Setpoint screens set low.
Machine 1. Drain clogged.
doesn't drain
when power 2. Defective drain valve.
button is
pressed.
1. Water turned off.
No indication of
pressure.
2. Transducer disconnected.
3. Pressure transducer defective.
07610-004-43-79-D
COMMON PROBLEMS
REMEDY
1. Replace plunger.
2. Replace diaphragm.
1. Check water level. If low, run new fill cycle.
2. Adjust setpoint.
3. Replace RTD.
4. Replace heater element.
5. Replace contactor.
1. Replace if necessary.
2. Adjust as required.
3. Check amperages. Replace if necessary.
4. Adjust rinse tank setpoint.
1. Remove obstruction.
2. Replace.
1. Turn water on.
2. Verify wiring.
3. Replace pressure transducer.
21