Troubleshooting - Cornelius In-N-Out Burger NGF 255 Installation Manual

In-N-Out Burger NGF 255 Installation Manual
IMPORTANT: Only qualified personnel should service internal components or electrical wiring.
!
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.
Symptom
Blown fuse or circuit
breaker
Agitator does not turn
Ice dispenses continu-
ously
Slushy ice or water in
hopper
Beverage does not dis-
pense
Beverage is too sweet
Unit will not dispense car-
bonated drinks. Dis-
penses syrup only.
Publication Number: 621058476INS

TROUBLESHOOTING

Dispenser Troubleshooting
Cause
Short circuit in electrical wiring
Inoperable agitator motor (shorted motor)
No power
Improperly installed upper ice chute assembly
(Reed switch is not being activated)
Inoperable reed switch
Electrical board driver circuit is defective
Gear motor has open circuit
Reed switch is not activated Improper assembly
of upper ice chute to lower chute.
Broken wire in the 2-wire harness leading to the
reed switch
Bad connection at main control board, J3, pins 2 &3 Repair connection or replace 2-wire harness
Ice gate mechanism is stuck in open position
Stuck or bent ice lever (does not allow gate to
close and open reed switch)
Blocked drains in cold plate
Poor ice quality due to water quality or ice maker
problems
No 24VAC to valves
No CO pressure
2
Valve brix requires adjustment
Carbonator is not operating
No CO in carbonator
2
City water pressure supply low or inconsistent
CO pressure in carbonator tank is too high.
2
system, stop dispensing, shut off the
2
Repair Wiring
Replace gear motor
Restore power or plug in unit
Check the upper ice chute assembly for proper
assembly and operation
Replace reed switch
Replace main control board
Replace gear motor
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.
Repair of replace 2-wire harness
Inspect gasket for proper position. Examine gate
plate to see if it slides freely behind the lower ice
chute.
Examine ice dispense lever to see if it is bent.
Remove access covers in cold plate cover &
inspect/clean drains
Correct water quality or repair ice maker
Restore 24 VAC to valves
Restore CO
Adjust valve brix
Repair carbonator
Restore CO
Booster pump must be used if dynamic water
pressure drops below 40 psig.
Check CO
2
recommended. Relieve pressure from carbon-
ator tank.
- 12 -
Remedy
pressure
2
pressure in carbonator
2
pressure regulator setting. 75 psig
© 2011, IMI Cornelius Inc.