Electrical Checkout; Overload Check; Compressor Check - Cornelius Quantum 1000 Service Manual

Continuous Flow Icemaker Service Manual
E C
LECTRICAL HECKOUT
!
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.
!
WARNING:
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
!
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.
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
!
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.
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 compres-
sor 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.
Publication Number: 630460174SER
Figure 18. Overload Check
Figure 19. Compressor Check
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