Compressor Check; Capacitor Check; Safety Controls - Cornelius UC 701 SERIES Installation And Service Manual

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 compressor
as the motor is grounded.
4. Check between screw terminal on the overload and "C" on the compressor. Check and repair the lead or con-
nections if there is no continuity.
C C
APACITOR HECK
1. Check or replace start capacitor, disconnect bleed resistor before checking for shorted capacitor.
2. Check or replace run capacitor (if supplied) check for shorted capacitor or either terminal grounded to case.
S C
AFETY ONTROLS
Your icemaker unit has several safety and control devices incorporated into its design.
!
WARNING:
None of the below described devices should ever be "bypassed" to allow the unit to function.
The safety and control system shut-off devices are:
1. Low water shut off reed switch located in icemaker float assembly. (Automatic reset type.) See Figure 3.
2. Gearmotor thermal overload, manual reset type (red button on motor). See Wiring Diagram Figure 13.
3. Compressor thermal overload, automatic reset type. See Figure 10.
4. Anti-freeze relay and associated circuit. See Wiring Diagram Figure 13.
5. Main service switch located on top of the control box. See Wiring diagram Figure 13.
6. Bin Control.
7. High pressure cut out (water cooled only).
© 2000-2012, IMI Cornelius Inc.
UC 701 Series Continuous Flow Icemaker Installation and Service Manual
(See Figure 11)
Figure 12. Gear Motor Overload
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