Motor Check; Start Relay - Cornelius 500-Series Installation And Service Manual

IMPORTANT
Icemaker runs when
reset but problem has
not been found.
Continue checking for
overload as follows to
guard against future
OVERLOAD GUIDE
ELECTRICAL:
S High or low voltage. Weak power lines can cause overloads on icemakers restarts.
S High running current (2.4amps or above). Check motor circuits and start relay.
S Auger delay failed.
ICEMAKER
S
Mechanical parts worn. Scored evaporator or auger. Worn thrust bearing.
S
Icemaker not turning off. Failed ice level control.
S
Over compression. Low water inlet temperature. Restrictions in water line from reservoir.
REFRIGERANT
S Contaminated charge or bad compressor.
S Low charge or gas leak.
S Low suction pressure. Improper expansion valve. Sensing bulb location or insulation
and/or defective expansion valve.

MOTOR CHECK

The resistance readings on the winding will be between 5 to 25 ohms. A meter capable of these low readings
must be used. The start relay cover must be removed. (See Figure 16).
If no continuity on start or run winding test, replace gearmotor. If continuity on grounded motor test, replace
gearmotor.

START RELAY

1. Check between " 2"and " 4"on relay (with relay unplugged). If there is continuity replace the relay, as the
relay contacts should be open.
2. Check between " 3"and " 4"on relay, if no continuity replace the relay.
Icemaker
Short run. Trips
again in 2
problems.
minutes. Check
gearmotor circuits.
GEARMOTOR
OVERLOAD TRIPPED
Check water level control
and evaporator water tube
for line build-up restrictions.
NO
CAUTION
Clear ice from
evaporator and
auger before
resetting overload.
Reset overload.
Resets but
runs.
motor does
not run.
Resets but
motor does
not run.
Check
gearmotor
circuits.
19
YES
CLEAN
See Instructions.
Will not
Reset.
Overload
hot try
again.
Will not
reset.
Replace
overload.
638085278