IDC Pro 255 Installation Manual
© 2016-2018, Cornelius Inc.
- 37 -
Publication Number: 621058578INS
C
ARBONATOR
T
ROUBLESHOOTING
Unit will not dispense car-
bonated drinks. Dispenses
syrup only.
A. CO
2
pressure in carbonator tank is too
high.
B. Water valve will not open
A. Check CO
2
pressure regulator setting. 75
psig recommended. Relieve pressure from
carbonator tank.
B. Check electrical connection to water valve.
Check resistance of coil (should be 9
ohms). Check for voltage at coil when
brand button is depressed.
Unit will not dispense car-
bonated drinks. Spurts CO
2
and syrup only.
A. Carbonator tank is empty, because tank
was emptied while power was applied to
unit. 5 minute time-out of carbonator pump/
motor occurred and carbonator pump is
locked off.
B. Note that this can occur while the water fil-
ter system is serviced or water supply is
shutoff. If drinks are drawn from the unit
while water pressure is shutoff, the carbon-
ator pump starts and runs continuously,
then shuts off on the 5 minute timeout.
A. Unplug the unit and reconnect the unit.
Main control board will reset, ice agitation
will occur, and carbonator tank will refill to
normal level.
B. 1) low water pressure switch deactivates
carbonator pump, 2) after 5 minutes reset
and retry carbonator pump. If water supply
is restored, the 5 minute timeout will not
occur. Repeat reset a second time, but on a
third time, then lockout carbonator pump,
which will generate a service call.
Carbonated drinks are flat
(low on carbonation)
A. Unit is out of CO
2
B. Carbonator tank is 100% filled because the
city water pressure exceeds the carbonator
tank CO
2
pressure regulator setting.
A. Replace CO
2
cylinder
B. CO
2
setting for the carbonator tank is 75
psig, max water pressure is 60 psig. If nec-
essary, install a water pressure regulating
valve.
Low water pressure
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
A. Increase line size to 1/2”
B. Add water pressure booster pump
C. Change water filter
D. Replace water booster tank/bladder
Table 18
Symptom
Cause
Remedy
Carbonator pump does not
start to fill tank
A. Power cord for the carbonator pump motor
is not connected
A. Carbonator pump is powered off the main
control board inside the electrical box of the
unit. Check that the umbilical cord is con-
nected from the unit to the pump motor ter-
minal box.
Power cord is connected
but carbonator pump does
not run
A. Carbonator pump motor is disabled
B. Probes were dry, unit was powered up,
water was not turned on, and carbonator
did not fill
C. Water service was interrupted for more
than 5 minutes
A. Check the enable/disable switch on the car-
bonator pump terminal box and enable it, if
necessary.
B. This results in a 5 minute timeout. Unplug-
ging the unit and plugging it in will reset the
unit and start the carbonator pump
C. Unplugging the unit and plugging it in will
reset the unit and start the carbonator
pump
Carbonator pump is short
cycling with every drink
drawn
A. Lower liquid level probe reads “dry” while
upper probe reads “wet”
A. Check color of leads going to probes. Black
should go to bottom probe and white to top
probe. Reverse if incorrect.
Table 17
Symptom
Cause
Remedy
Содержание IDC PRO 255
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