PBD175 (Spire 3.0) Service Manual
Publication Number: 620062609SER - 28 - © 2015-2016, Cornelius Inc.
REPLACING THE BACKBLOCK
To replace a damaged backblock, perform the procedure below.
16. For valves or back blocks that have been replaced, enter priming mode and start the carb water priming
to run water until circuits that were serviced are observed (typically several cycles of the carb pump).
Then start the plain water and let it flow until a steady stream is observed and all air has been removed.
Select up to 5 syrups to simultaneously and run them until all the air has been removed, then continue
with balance.
17. Press the Priming button on the service screen and
follow the procedure to sanitize and BRIX the new
valves.
Figure 43.
18. Selecting Priming on the BIB popup allows the
technician to prime only one valve at a time.
Figure 44.
19. When priming the valve, the technician can choose
to Start Prime Dispense, which primes the valve
until the technician selects Stop Prime Dispense.
Figure 45.
20. Perform the procedure in “4 Second BRIX Calibration” on page 18.
21. Perform the procedure in “Priming” on page 19.
22. Resume normal operation.
1. Disconnect the CO
2 supply from the unit.
2. Bleed off syrup pressure using prime dispense for all valves that need to be replaced
3. Lubricate Valve inlet O-Rings with food safe lubricant.
4. Perform Step 1 through Step 9 on page 27.
5. Reconnect the CO
2 supply to the unit.
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