Jackson Puritan PA-1, Installation & Operation Manual, Page: 27 / 75

SECTION 4: TROUBLESHOOTING SECTION
COMMON PROBLEMS
21
WARNING:
inspection, testing and repair of electrical equipment should be performed only by qualified service per-
sonnel. 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 power, attach
test equipment and re-apply power to test. When replacing electrical parts, disconnect power at source circuit breaker.
Problem: Dishmachine will not run, no voltage at relay terminals L1 and T1.
1. Service disconnect switch is turned off or is faulty. Turn the disconnect back on or replace.
2. Branch circuit breaker tripped/fuse blow. Reset or replace as required.
3. Loose or broken connection to the dishmachine. Tighten or replace connections as required.
Problem: Dishmachine will not run with power switch in the “ON” position unless the cam timer is moved off of the
“home” position.
1. The door switch is shorted out. With the door open, check for the voltage between the ORANGE/WHITE door switch wire
and neutral. If it reads 120 volts, replace the shorted door switch.
2. Faulty control relay. With the door open, check for voltage between connections #9 and #3 on control relay. If it reads 120
volts, replace the control relay.
3. Misadjusted or faulty “cycle reset” cam microswitch. Adjust the cam or replace the switch.
Problem: Dishmachine will not cycle with power switch in the “ON” position, works only in Delime Mode.
1. Faulty “cycle reset” cam microswitch. Rotate the cams manually off of the “home” position. Check the voltage between the
ORANGE and BLACK/WHITE wires on the cycle reset switch. If it reads 120 volts, then the switch is open and should be
replaced.
2. Faulty cam timer motor. If the cam timer is not rotating, check the voltage to the motor. If voltage is present when the door
is closed, replace the timer motor.
3. Faulty control relay. Check the voltage across relay contacts #9 and #6. If 120 volts when the doors is closed, replace the
relay.
4. Faulty NORMAL/DELIME switch. In the “NORMAL” position, check the voltage between the WHITE/BLACK and WHITE/RED
wires to the NORMAL/DELIME switch. If it reads 120 volts, replace the switch.
Problem: Dishmachine will not run. The wash pump motor will run if the wash motor relay is depressed manually.
1. Open side door switch. With the door closed, measure the voltage between the BLUE and WHITE/BLACK wires on the door
switch. If it reads 120 volts, replace the switch.
2. Faulty side door safety switch relay. Measure the voltage between the black wires on terminals #6 and #9 of the relay. If you
measure 120 volts, replace the relay; or measure between the WHITE/BLACK wire on terminal 4 and the ORANGE/WHITE
wire on terminal 7 of the relay. If you read 120 volts, replace the relay.
Problem: Dishmachine will not run with the power switch in the “ON” position or in the Delime Mode.
1. Faulty door switch. With the door closed, check for voltage between the WHITE/BLACK and ORANGE/WHITE wires to the
door switch. If it reads 120 volts, replace the open switch or reposition the magnet or magnet bracket.
2. Faulty ON/FILL-OFF/DRAIN switch. With the switch in the “ON” position, check the voltage between the BLACK and
WHITE/BLACK wires on the switch. If it reads 120 volts, replace the switch.
3. Faulty NORMAL/DELIME switch. In the “NORMAL” position, check the voltage between the WHITE/BLACK and WHITE/RED
wires to the NORMAL/DELIME switch. If it reads 120 volts, replace the switch; or in the “DELIME” position, check the voltage
between the two BLACK/ORANGE wires leading to the NORMAL/DELIME switch (not the BLACK/ORANGE jumper). If it reads
120 volts, replace the switch.
PA-1/PA-2 Series Installation & Operation Manual
7610-002-24-11 Rev. J (11/02/2005)