Troubleshooting; Troubleshooting Compressors - Cornelius UCR 700 Series Installation & Service Manual

UCR 700 Series Continuous Flow Icemaker Installation/ServiceManual
IMPORTANT: Only qualified personnel should service internal components or electrical wiring.

TROUBLESHOOTING COMPRESSORS

Trouble
Basically the compressor problems can be narrowed down to three areas of checkout.
THE COMPRESSOR WILL
NOT RUN
THE COMPRESSOR STARTS BUT
TRIPS REPEATEDLY ON THE
OVERLOAD PROTECTOR
THE COMPRESSOR RUNS BUT
WILL NOT REFRIGERATE
Publication Number: 630460154

TROUBLESHOOTING

Probable Cause
A. No voltage to the com-
pressor terminals.
B. Low voltage.
C. Problems in the com-
pressor electrical cir-
cuit.
A.
B.
C. Voltage.
D. High compressor
amperage draw.
A. Compressor not work-
ing
- 23 -
Remedy
A. Check circuit.
B. Below 90% of name-
plate rated voltage.
C. See electrical check-
out instructions.
A. Check for proper fan
operation and clean
condenser.
B. Check the compressor
suction and dis-
charge pressures.
C. Voltage should be
within 10% of the
rated nameplate volt-
age.
D. It should never exceed
120% of the rated
nameplate amper-
age.See electrical
checkout instructions.
A. Check the compressor
suctions and dis-
charge pressures.
See chart on page 11.
© 2001-2012, IMI Cornelius Inc.