Capacitor Check; Safety Controls - Cornelius 500 Series Service Manual

Continuous Flow Icemaker Service Manual
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 compres-
sor if there is no continuity as the run windings are
open.
2. Check between "C" and "S." Replace the compres-
sor 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.
C C
APACITOR HECK
!
WARNING:
Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all
power is off to the unit before performing any work.
Failure to comply could result in serious injury, death or damage to the equipment.
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 devices described below should ever be "bypassed" to allow the unit to function.
Failure to comply could result in serious injury, death or damage to the equipment.
The safety and control system shut–off devices are:
1. Low water shut off reed switch located in icemaker float assembly. (Automatic reset type.)
2. Gearmotor thermal overload, manual reset type (red button on motor).
3. Compressor thermal overload, automatic reset type.
4. Anti–freeze relay and associated circuit. See wiring diagrams.
Publication Number: 630460174SER
Figure 22. Compressor Check
GEAR MOTOR OVERLAY
Figure 23. Gear Motor Overload
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