Concordia XPRESS - Milk System: No Milk Pour

3033-015B Section 15: Troubleshooting
Concordia Xpress Technical Support Manual 15-19
2900-300B
Milk System: No Milk Pour
No Milk Pouring
Has a
milk clean been
performed?
Yes
No
Run a milk
clean.
Did
solution
pull from
cups?
Yes
Yes
Is there
milk in the
refrigeration
unit?
Insert milk
container in the
refrigeration unit.
No
Yes
Are the
milk weight
trays installed
correctly?
Is the
tubing inserted
correctly?
Verify the milk pick-up tube
sinks to bottom of the milk
container and that it is not
pinched or curled.
No
Navigate to TEST ROUTINES >
MILK LEVEL and reset the milk
weight trays. Trays should read 60
when empty. Adjust the magnet
with a slotted screwdriver.
Yes
Is the
problem in the
refrigeration
unit?
Yes
No
No
Run a test drink
with milk.
Milk
pouring
correctly?
END PROCESS
Yes
No
No
Run a test drink
with milk.
Milk
pouring
correctly?
END PROCESSYes
No
Inspect air gate
vent needles and
elbow fittings for
air leaks.
Elbow
fittings and vent
needles OK? No
air leaks?
Navigate to SPECIAL
FEATURES and ensure
the milk options selected
match the customer
profile.
Replace vent
needles. Reseal
and tighten fitting
with LocTite.
No
Yes
Navigate to TEST
ROUTINES > MILK PUMP/
AIR GATE to activate and
verify voltages are present.
Is the
input and output
pump tubing
blocked?
Repair or replace.
Is
there debris in
the input
tee?
Repair or replace.
No
Yes
Yes
No
24Vdc
present at air
vent control?
12Vdc
present for latte
gate?
2.5Vdc
at milk pump
control?
Yes
Yes
Yes
Cover the top of
the air vent stem
with fingers and
activate pump.
Yes
Inspect pins of
cable and verify
cable attached to
mini backplane.
Cables
and pins
correct?
Replace
CPU.
No
Yes
Repair or replace
cables.
No
Verify voltage
present at adjust
pot for 2.5Vdc.
No
Does
milk
pour?
Replace milk
pump.
PN 2340-112
Replace the air
gate assembly.
PN 2712-009
No
Yes
24Vdc
at milk pump
power?
No
No