Troubleshooting; Unit Troubleshooting - Cornelius IDC PRO 255 Service Manual

IDC Pro 255 Service Manual
!
WARNING:
Only trained and certified electrical, plumbing and refrigeration technicians should service this unit.
ALL WIRING AND PLUMBING MUST CONFORM TO NATIONAL AND LOCAL CODES. FAILURE TO COMPLY
COULD RESULT IN SERIOUS INJURY, DEATH OR EQUIPMENT DAMAGE.
!
WARNING:
If repairs are to be made to a product system, remove quick disconnects from the applicable product tank, then relieve
the system pressure before proceeding. If repairs are to be made to the CO
CO supply, then relieve the system pressure before proceeding. If repairs are to be made to the refrigeration system,
2
make sure electrical power is disconnected from the unit.
Should your unit fail to operate properly, check that there is power to the unit and that the hopper contains ice. If the
unit does not dispense, check the following chart under the appropriate symptoms to aid in locating the defect.
U T
NIT ROUBLESHOOTING
Symptom
Blown fuse or circuit breaker
Agitator does not turn
Ice dispenses continuously
Slushy ice or water in hopper
Beverage does not dispense
Beverage is too sweet
Low water pressure
Publication Number: 621058649SER

TROUBLESHOOTING

Table 25.
Cause
A. Short circuit in electrical wiring.
B. Inoperable agitator motor (shorted motor).
A. No power.
B. Improperly installed upper ice chute
assembly (Reed switch is not being
activated).
C. Inoperable reed switch.
D. Electrical board driver circuit is defective.
E. Gear motor has open circuit.
F. Reed switch is not activated, improper
assembly of upper ice chute to lower chute.
G. Broken wire in the 2-wire harness leading
to the reed switch.
H. Bad connection at main control board.
I. Door not closed or not making switch con-
nections to lid.
A. Ice gate mechanism is stuck in open
position
B. Stuck or bent ice lever (does not allow gate
to close and open reed switch).
A. Blocked drains in cold plate
B. Poor ice quality due to water quality or ice
maker problems
A. No 30 VDC to valves.
B. No touch response.
A. Valve BRIX requires adjustment.
A. Could be caused by excessively long runs
(over 40 ft.) of 3/8" water supply line.
B. Low water pressure.
C. Plugged water filter.
D. Water booster bladder has burst.
system, stop dispensing, shut off the
2
A. Repair wiring.
B. Replace gear motor.
A. Restore power or plug in unit.
B. Check the upper ice chute assembly for
proper assembly and operation.
C. Replace reed switch.
D. Replace main control board.
E. Replace gear motor.
F. Check to make sure tongue of upper chute
engages into the back of the lower chute,
ensure upper chute engages outside the
lower chute, and snap front of chute into
place.
G. Repair of replace 2-wire harness.
H. Repair connection or replace 2-wire har-
ness.
I. Check distance from screen to lid.
A. Inspect gasket for proper position. Examine
gate plate to see if it slides freely behind
the lower ice chute.
B. Examine ice dispense lever to see if it is
bent.
A. Remove access covers in cold plate cover
& inspect/clean drains.
B. Correct water quality or repair ice maker.
A. Restore 30 VDC to valves.
B. Re-start the unit.
A. Adjust valve BRIX.
A. Increase line size to 1/2".
B. Add water pressure booster pump.
C. Change water filter.
D. Replace water booster tank/bladder.
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Remedy
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