Cornelius QUANTUM SERIES Manuale Utente

Quantum Series Installation and Service Manual

- 11 -

720901120

The following pages contain trouble-shooting charts designed to aid an experienced serviceman in 
diagnosing any operating problems that may be experienced. In order to gain maximum benefit 
from the charts, please note:

1.

Start at the beginning of the chart and supply the appropriate answer to each question.

2.

Do not skip any section, unless instructed to do so. You may miss the solution to your prob-
lem.

3.

Evaluate the possible problem causes in the sequence in which they are presented. In gen-
eral, they began with the most likely and/or easiest to check, and proceed to the less likely 
and/or more complicated.

4.

If, after checking all indicated causes, the problem is not resolved, it is recommended that you 
try a second time. Evaluate symptoms carefully and modify your answers as necessary.

5.

If you are unable to resolve a problem after several attempts, contact customer service de-
partment at (1-800-238-3600) for assistance.

Totally Inoperative

 No power to dispenser due 

to tripped circuit 
breaker.

 Reset circuit breaker. Confirm that 

breaker is correct size and no 
other equipment is operating on 
the same circuit. Also confirm 

that supply voltage is +10% of 
nameplate specifications.

 Loose or broken power sup-

ply connection inside 
dispenser.

 

 Repair connection

 

No cooling

 Line voltage is not within 

+10% of nameplate 
specifications causing 
compressor overload to 
trip

 Contact an electrician

 Both thermostats in OFF 

position

 Turn ON thermostats and recali-

brate the temperatures to 34

o

F 

-40

 o

F (1.1

 o

C –4.5

 o

C).

 Defective compressor over-

load or start capacitor

 Replace