Cornelius TEA URN Service Manual page 12

CAUTION: Do not puncture
bag-in-box or it's internal bag.
2. Open flap on new bag-in-box by rapping box
sharply with palm of your hand. Do not use a
sharp instrument to open the box.
3. Pull bag connector from inside the bag-in-box
container, then remove dust cap from the
connector.
4. Dip concentrate line quick disconnect connector
in warm water to clean it.
5. Connect concentrate line quick disconnect
connector to new bag-in-box connector.
Note: The bag-in-box container, once connected
into the concentrate system, may be placed in
any convenient position.
6. Dispense from dispensing valve until a good
flow of syrup is dispensed.
CONCENTRATE FLAVOR CHANGE
1. Perform sanitizing procedure (as instructed in
SERVICE AND MAINTENANCE section of this
manual) on concentrate system syrup flavor
change will be made on.
2. Check concentrate line quick disconnect
connector for sticky operation. Wash quick
disconnect in warm water.
3. Connect full bag-in-box container containing
new flavor concentrate into the concentrate
system.
CLEANING CO SYSTEM CO
2
CHECK VALVES
(see Figures 2 and 4)
The primary CO regulator CO
2
must be inspected and serviced at least once a year
under normal conditions and after any servicing or
disruption of the CO system. ALWAYS REPLACE
2
BALL SEAT (QUAD RING SEAL) EACH TIME GAS
CHECK VALVE IS SERVICED.
312020000
GAS
2
gas check valve
2
FIGURE 4. CO GAS CHECK VALVE ASSEMBLY
2
WARNING: WEAR PROTECTIVE EYE
WEAR TO AVOID INJURY FROM
GAS-DRIVEN PARTICLES.
To service the CO gas check valve, proceed as
2
follows:
1. Close CO cylinder shut off valve.
2
2. Disconnect concentrate pump CO
from primary CO
gas check valve outlet.
3. Using two wrenches, slowly loosen the CO
check valve from the primary CO
assembly to allow gas to escape, then remove
check valve from the regulator.
4. Disassemble the CO
Figure 4.
5. Discard quad ring seal.
6. Rinse parts in warm water and dry with a soft
lint free cloth.
7. Inspect each part for burrs, nicks, etc.
8. Reassemble parts using new quad ring seal.
9. Install CO gas check valve in primary CO
2
regulator assembly outlet.
10. Connect concentrate pump CO
primary CO regulator assembly CO
2
check valve outlet.
11. Open CO cylinder shut off valve.
2
10
inlet line
2
regulator assembly CO
2
regulator
2
gas check valve following
2
2
inlet line to
2
gas
2
2
gas
2