TROUBLESHOOTING SECTION
11
WARNING:
Inspection, testing and repair of electrical equipment should be performed only 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 power, attach test equipment and reap
ply power to test. When replacing electrical parts, disconnect power at source circuit breaker.
Possible Cause
Action
Faulty prime switch.
With the prime switch in the prime position,
check for voltage between the GREY and
WHITE/RED wires to switch. If 120V,
Faulty delime switch.
With the delime switch in the DELIME
position, check for voltage between the
WHITE/BLACK and WHITE/RED wires to
the delime switch. If 120V, replace the
delime switch.
Loose motor terminal wire.
Tighten connections.
Faulty sanitizer pump motor.
If you read 120V at the sanitizer motor
terminals during the sanitizer feed cycle,
replace the motor.
Misadjusted cam.
Adjust detergent cam on cam timer.
Faulty detergent microswitch on cam timer.
When the detergent cam is in the home
position, measure voltage between
ORANGE and GREY/ WHITE wires. If
120V, replace the microswitch.
Misadjusted cam.
Adjust rinse aid cam on cam timer.
Faulty rinse aid microswitch on cam timer.
When the rinse aid cam is in the home
position, measure the voltage between the
ORANGE and ORANGE/YELLOW wires. If
120V, replace the microswitch.
Loose or broken wire.
Tighten connections to microswitch.
Faulty sanitizer microswitch on cam timer.
When sanitizer cam is in home position,
measure voltage between ORANGE and
GREY wires on the microswitch. If 120V,
replace switch.
Faulty prime switch.
With the prime switch in the prime position,
check for voltage between the GREY and
WHITE/RED wires to switch. If 120V,
replace the switch.
Faulty delime switch.
With the delime switch in the DELIME
position, check for voltage between the
WHITE/BLACK and WHITE/RED wires to
the delime switch. If 120V, replace the
delime switch.
Loose motor terminal wire.
Tighten connections.
Faulty sanitizer pump motor.
If you read 120V at the sanitizer motor
terminals during the sanitizer feed cycle,
replace the motor.
Sanitizer pump doesn't run during the cycle
or through the use of the prime switch.
Sanitizer pump does not run during the
cycle, but runs when primed.
Prime switch does not activate sanitizer
pump.
Symptom
Prime switch does not activate sanitizer
pump.
Sanitizer pump doesn't run during the cycle
or through the use of the prime switch.
Detergent not feeding; rinse aid feeds okay.
Rinse aid not feeding, detergent feeds okay.
