Troubleshooting - Jackson 24P-NSU Service Manual

TROUBLE SHOOTING GUIDE
PROBLEM
Rinse doesn't operate on
automatic during timed cycle
(but does operate on manual
rinse/fill operation).
Rinse water runs continuously
with circuit breaker controlling
machine turned off.
Note: In disassembling solenoid valve, use instructions shown on separate page.
Rinse water runs
continuously with power applied
to machine, but when circuit
breaker to machine Is turned
off, water stops.
Note: Excessive water line pressure can cause water to continually run even though the power to the machine is turned off. Check
Wash temperature not at
required reading on
thermometer.
Note: Any switches, water level controls, heater elements, relays or contactor that have to be checked out, can be done using the
CAUSE
Micro switch defective
(this is the micro switch
furthest from the timer motor
on the timer assembly).
Rinse fill switch defective
on N.C. contacts.
Defective plunger In
solenoid valve.
Detective diaphragm in
solenoid valve.
Defective rinse/flll switch.
Defective timer that has
stopped In a position
keeping the rinse on.
Defective micro switch on
timer assembly.
specifications for required pressure.
Defective thermometer.
Rinse temperature not at
required temperature, causing
wash temperature to be
lowered during rinse cycle.
heater checkout system page.
15
SOLUTION
Replace.
Replace.
Replace plunger.
Check both holes in diaphragm
cartridge to Insure that they
are open. The one on the outside
perimeter should be the size of an
ordinary straight pin. If it's not.
heat a straight pin and put It
through this hole to enlarge. If
this fails to correct situation.
replace diaphragm.
Replace.
Replace timer motor or
timer as necessary
Replace.
Using a thermometer (fast
reading type that's known
to be correct), insert In wash
reservoir and check reading
against wash thermometer on
machine. If machine thermometer
isn't correct within three or four
degrees, replace.
Check out rinse heat using
heater checkout system page
in manual.