Troubleshooting Guide - Cornelius QUEST ELITE 4000 Service Manual

Quest Elite 4000 Service Manual
Symptom
Unit totally inopera-
tive
No Cooling
Publication Number: 620048956SER

TROUBLESHOOTING GUIDE

The following tables contain trouble-shooting information intended to aid an
experienced service person in diagnosing operational problems that may occur. For
further assistance, contact the Cornelius Customer Services department at 800-
283-3600 between the hours of 7:30A.M. and 5:00P.M. Central Standard Time. You
must have the model and serial number (Located on the right side of the dispenser)
when calling.
Probable Cause
A. No power to dispenser due to tripped
circuit breaker.


B. Loose or broken power supply connec-
tion inside dispenser.
A. Line voltage not within nameplate
specification causing compressor
overload to trip.
B. No water in water ice bath or water
level extremely low, exposing ice bank
sensing probe.
C. Defective Ice Bank Control or sensing
probe.
D. Cabinet fan inoperative resulting in
warm concentrate (water continues to
cool).
E. Compressor short cycles on overload.

F. Compressor starts but hums & trips
overload.
G. Defective compressor overload or start
capacitor.
H. Compressor starts but does not switch
off of start winding.
I. Refrigerant leak.
- 20 -
Table 2
A. Reset circuit breaker. Confirm that
breaker is correct size & no other
equipment is operating on the same
circuit. Also confirm that supply voltage
is +/-10% of nameplate specification.
B. Repair connection.
A. Contact an electrician.

B. Fill ice bath to proper water level.

C. Replace.
D. Replace.
E. Excessively high discharge pressure
due to restricted condenser or inopera-
tive condenser fan motor.
F. Seized or shorted compressor,
replace.
G. Test & replace.
H. Relay or compressor is defective. Test
& replace faulty item.
I. Repair leak, evacuate & recharge sys-
tem.
Remedy
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