Scotsman NDE554 - Manual (Page 29)

TO REMOVE AND REPAIR THE GEARMOTOR ASSEMBLY
(Assuming that the procedures through removal of
the water seal have been performed.)
To Check the Motor:
1. Remove wires from terminals 1 and 2.
2. Use an ohmmeter to check for continuity. If there
is none, replace the motor only. If there is
continuity but the motor will not start, check the
motor's start switch.
3. Remove motor end bell or motor stator.
With ohmmeter wires attached to 1 and 2
move centrifugal switch actuator up and
down to simulate motor rotation. If the
ohmmeter does not show any change,
replace the switch or motor. If the
ohmmeter shows an open circuit, replace
the switch or motor.
To Replace:
1. Remove the electrical wires from the
gear drive motor.
2. Unscrew the 4 cap screws holding the
gearmotor to the gearmotor plate.
3. Remove the gearmotor from the
icemaker.
To Inspect the gearmotor.
A) Remove the cap screws holding the
gearmotor case halves together and pry the
two cases apart.
B) To lift off the cover, lift up until you can
feel internal contact, then pull the cover
towards the output gear end, and then lift
the cover (with drive motor attached) up
and away from the gear motor case.
Note: The case cover output gear,
bearings, and shaft are one pressed
together assembly. Replace as a unit.
C) Inspect the oil, gears, and bearings. If
the oil level and condition is acceptable,
quickly check the gears and bearings. They
are likely to be fine if the oil is.
If there is evidence of water in the oil (rusty
bearings and gears; the oil having a creamy white
appearance; oil level too high) carefully inspect the
bearings and gears. If in doubt about the condition
of a part, replace it. The oil quantity is 14 fluid
ounces, do not overfill.
Note: The gears and bearings are available only as
pressed together sets.
D) After replacing parts as required, (if any)
reassemble the gearcase. The two smaller gears
and the oil should be in the lower case, the output
gear will be with the cover. As you lower the cover
onto the lower case, cover will have to be moved
closer to the second gear after the output gear has
cleared the second gear top bearing.
E) After the case is together, and the locating pins
are secure in both ends, replace all cap screws.
4. Bench test the gearmotor, check for oil leaks,
noise, and amp draw.
NDE554 & NDE654
March 2000
Page 29
ROTOR
BEARING
GASKET
FIRST GEAR &
BEARINGS
Electrical Shock Hazard.
Disconnect electrical
power to the icemaker -
dispenser before
beginning.
GEARCASE
COVER