To Replace Bearing; Electrical Checkout; Overload Check; Compressor Check - Cornelius UCR 700 Series Installation & Service Manual

UCR 700 Series Continuous Flow Icemaker Installation/ServiceManual

TO REPLACE BEARING

1. Disconnect unit from electric power.
2. Remove top panels.
3. Remove Dispense Tray Cover.
4. Use an open end wrench on auger nut connected to bearing and turn counterclockwise to remove assem-
bly.
5. Remove worn bearings. Replace with new bearings and then reinstall assembly.
NOTE: If auger turns with nut, remove cover on top of gearmotor stator and hold motor while loosening
nut.
Figure 10. Overload Check
E C
LECTRICAL HECKOUT
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.
O C
VERLOAD HECK
Using a volt-ohmmeter check the continuity across the overload, contact #1 and # 3. If none, wait for unit to cool
down and try again. If still no continuity, the overload protector is defective and should be replaced.
C C
OMPRESSOR HECK
The resistance readings on the windings will be between 0.25 to 10.00 ohms, a meter capable of these low
readings must be used.
1. Check between "C" and "R." Replace the compressor if there is no continuity as the run windings are open.
2. Check between "C" and "S." Replace the compressor if there is no continuity as the start windings are
open.
3. Check between "C" and "R" or "S" and the shell of the compressor. If there is continuity, replace the com-
pressor as the motor is grounded.
4. Check between screw terminal on the overload and "C" on the compressor. Check and repair the lead or
connections if there is no continuity.
Publication Number: 630460154
(See Figure 10)
(See Figure 11)
Figure 11. Compressor Check
- 17 -
Overload
Ground
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