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Olympus Post-Mix Service Manual
TROUBLESHOOTING REFRIGERATION SYSTEM
Trouble
1. Refrigeration compres-
sor does not operate.
2. Compressor will not stop
after sufficient ice bank is
produced.
Publication Number: 750300229
Probable Cause
A. No water in water tank.
B. Control board power
switch on top of dis-
penser in "OFF" position,
or building power not con-
nected to unit (small)
C. Ice sensor electrically dis-
connected.
D. Dispenser power cord
unplugged, or drop-in
refrigeration assembly
power cord unplugged.
E. No power source (blown
fuse or tripped circuit
breaker).
F. Low/high voltage.
G. Loose, disconnected, or
broken wiring.
H. Overload protector cut
out; overheated compres-
sor. Condenser fan motor
not operating as required.
I.
Inoperative overload pro-
tector or start relay.
J. Inoperative ice bank
probe.
K. Inoperative control board.
A. Ice bank probe location
incorrect.
B. Ice temperature sensor
inoperative.
C. Control board inopera-
tive.
- 24 -
Remedy
A. Fill water tank with water
as instructed.
NOTE: Ice Bank Control
will not turn compres-
sor on unless probes
are covered with water.
B. Place control board
power switch in "ON"
position or connect unit to
power source.(will be a
built-in 3-minute time
delay before refrigeration
compressor starts).
C. Electrically connect or
replace inoperable sen-
sor.
D. Plug in power cord.
E. Replace fuse or reset cir-
cuit breaker. (Note: Fuse
or circuit breaker are not
part of dispenser).
F. Voltage must be 90-130
or 180-255 VAC.
G. Tighten connections or
replace broken wiring.
H. Compressor will cool
enough to restart. Do not
overdraw cooling capac-
ity of dispenser. Refer to
"Condenser Fan Motor
Not Operating" in this
section.
I.
Replace inoperative part.
J. Replace ice bank probe.
K. Replace control board.
A. Place probe in proper
location.
B. Replace ice temperature
sensor.
C. Replace control board.
© 2002, IMI Cornelius Inc.
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