During the week of 8/26, we have started to note that, due to a design flaw, there are a small number of v1.5 Standup machines (units with silver slanted shelves) experiencing a steady CO2 leak at the pressure transducer fitting (noted in red arrow below). This area is towards the back left part of the machine near the flavor pumps.
To verify that you are experiencing this issue, with the CO2 tank connected and the tank valve open, first turn off power to the machine. A typical office environment is quiet enough that you should be able to hear the leak. In a noisy environment or if you are unsure, you can apply a small amount of dilute soapy water to the fitting and observe if bubbles form. Bubbles indicate the presence of a leak.
Note: This issue is not likely to develop over time, and should only occur during new installs.
To resolve this issue, please follow the steps below:
1. Turn off power to the machine. Leave the CO2 tank connected with the tank valve open.
2. Unmount the CO2 regulator by removing the two screws located behind flavor BIB #2 with a #2 Phillips screwdriver.
3. Disconnect the white 4 pin connector attached to CO2 pressure sensor cable.
4. Spray a small amount of diluted cleaning solution on the connection as shown to confirm the presence of the leak.
5. Using a wrench tighten the fitting approximately ¼ turn at a time until the leak stops.
6. Re-connect the 4 pin electrical connector disconnected in step 3.
7. Re-install the regulator using the screws removed in step 2.
8. Turn the machine back on and verify functionality.
- If you are having trouble working on the regulator in place you can remove it from the system entirely. To do this, close the valve on the CO2 tank, disconnect the tank from the black high-pressure hose, and remove the low pressure tube from the push-to-connect fitting on the back of the regulator. The regulator, high pressure hose, and pressure sensor can then be removed from the Bevi as a single sub-assembly and brought over to a bench.
- If after tightening the sensor 1 full turn the leak has not stopped, the sensor will need to be completely removed and reinstalled. After unscrewing the sensor entirely, clean the treads of old thread sealant and apply 2 wraps of teflon tape per manufacturer's directions. When re-installing sensor, turn until “finger tight” and then tighten two full additional turns with a wrench. The regulator sub-assembly must be fully removed from the Bevi to perform this procedure.
As of week of 8/26, the engineering team has started to redesign the thread material used in the transducer fitting to ensure a tighter seal.