To Replace Bearings; Troubleshooting Compressor; Electrical Checkout; Figure 10. Overload Check - Cornelius IMD Series Installation Manual

TO REPLACE BEARINGS

1. Dispense all ice from unit.
2. Disconnect unit from electrical power.
3. Remove panels.
4. Unplug Dispense Motor and Ice Level Switch.
5. Remove four screws holding dispense cover in place.
6. Remove dispense cover assembly.
7. Use an open end wrench on auger nut connected to bearing and turn and turn counterclockwise to remove
assembly.
8. Remove worn bearings. Replace with new bearings and then reinstall assembly.
NOTE: If auger turns with nut, remove cover on top of gear motor stator and hold rotor while loosening nut.
9. Reconnect power to icemaker.

TROUBLESHOOTING COMPRESSOR

Basically the compressor problems can be narrowed down to three areas of checkout--
1. THE COMPRESSOR WILL NOT RUN
No voltage to the compressor terminals -- check circuit.
Low voltage -- below 90% of nameplate rated voltage.
Problems in the compressor electrical circuit. See Electrical Checkout instructions.
2. THE COMPRESSOR STARTS BUT TRIPS REPEATEDLY ON THE OVERLOAD PROTECTOR
Check for proper fan operation and clean condenser.
Check the compressor suction and discharge pressures.
Voltage -- The voltage should be within 10% of the rated nameplate voltage.
High compressor amperage draw, it should never exceed 120% of the rated nameplate amperage. See
Electrical Checkout Instructions.
3. THE COMPRESSOR RUNS BUT WILL NOT REFRIGERATE
Check the compressor suction and discharge pressures. See Chart on Page 12.

ELECTRICAL CHECKOUT

1. Be sure the unit is disconnected from the power source. Remove the compressor electrical box cover.
Check for obvious damage and loose wires.
2. Disconnect the fan motor leads. Since capacitors store energy, short the capacitor with a screwdriver. This
will prevent shocks.
3. Disconnect the compressor terminal wires.

FIGURE 10. OVERLOAD CHECK

638085277
FIGURE 11. COMPRESSOR CHECK
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