Jackson Puritan PA-1 Installation & Operation Manual page 28

SECTION 4: TROUBLESHOOTING SECTION
COMMON PROBLEMS
Problem: Dishmachine cycles continuously.
1. "Cycle reset" switch is loose. Reposition the switch assembly, bend the metal lever if necessary.
2. Faulty "cycle reset" switch. Measure between the BLACK/YELLOW and ORANGE wires on the "cycle reset" switch while
the timer is rotating. As the switch lever drops into the "home" position, you should measure 120 volts. If not, replace the switch.
3. Dishmachine is in Delime Mode. Put the NORMAL/DELIME switch in the "NORMAL" position.
Problem: Dishmachine runs with the door open.
1. The door switch may be shorted out. With the machine off, open the doors, and with both wires to the door switch unplugged,
measure the continuity between the wires on the switch. If there is continuity, replace the switch.
2. Faulty wash relay. Turn the machine off. If the wash relay does not release, replace it.
3. Faulty control relay. With the power off, remove the WHITE/RED and BLACK/YELLOW wires form the control relay termi-
nals #9 and #6. Measure the continuity between the terminals. If there is continuity, replace the relay.
Problem: Dishmachine will not fill, though other functions work.
1. Y-strainer on incoming water line plugged or clogged. Remove strainer and clean out.
2. Water supply valve(s) turned off. Turn the valve(s) on.
3. Faulty solenoid valve diaphragm. Replace diaphragm, clean foreign material out of valve body and orifices.
4. Faulty solenoid coil. If the coil has voltage, but no continuity, replace the coil (continuity is measured across coil connectors
with wires removed).
5. Faulty fill microswitch. During fill, measure the voltage between the ORANGE and WHITE/GREEN wires. If it reads 120 volts,
adjust or replace the switch.
Problem: Dishmachine fills continuously, even without power applied to the machine.
1. Solenoid valve dirty or faulty. Clean valve or replace faulty parts as required.
Problem: Dishmachine fills continuously, only when power is supplied to the machine.
1. Faulty fill microswitch. Repair or replace switch as necessary.
2. Cam timer stalled in fill position. If the cam timer is not rotating, check the voltage to the timer motor. If it measures as 120
volts when the door is closed, replace the timer motor.
3. Shorted ON/FILL-OFF/DRAIN switch. Check the voltage between the BLACK and WHITE/GREEN connections on the
ON/FILL - OFF/DRAIN switch in the "ON" position. If it does not read 120 volts, replace the switch.
Problem: The wash motor does not run, other functions work. Wash motor only runs when the wash relay is manual-
ly pushed down.
1. Loose wire connection to microswitch, relay, or contactor. Tighten wires as required.
2. Faulty wash cam microswitch. During a wash cycle, check the voltage between the ORANGE and BLACK/ORANGE wires
on the wash microswitch. If it reads 120 volts, the switch is open and should be replaced.
3. Faulty NORMAL/DELIME switch. During the wash cycle, check the voltage between the two BLACK/ORANGE wires (not the
jumper). If it reads 120 volts, replace the NORMAL/DELIME switch.
4. Faulty control relay. Check the voltage across relay contacts #7 and #4. If it measures 120 volts during the wash cycle,
replace the relay.
5. Faulty wash relay. Check the voltage at the relay coil between the ORANGE/BLACK and WHITE wires. If you read 120 volts,
then the coil is faulty. Replace the wash relay.
PA-1/PA-2 Series Installation & Operation Manual
7610-002-24-11 Rev. J (11/02/2005)
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