Overview
This guide walks through the process of removing and replacing the Gen 2 CO2 Regulator Assembly with a replacement of the same kind (Gen 2) in North American (NA) and UK/European (UK/EU) Bevi 2.0 Standup units.
NOTE: Make sure you’re using the right guide. This guide is for removing and replacing a Gen 2 CO2 regulator with another Gen 2 CO2 regulator only.
UK/Europe: Gen 2 is the only CO2 regulator used in UK/Europe Standup 2.0 machines.
UK/Europe: Gen 2 is the only CO2 regulator used in UK/Europe Standup 2.0 machines.
If you are replacing an older Gen 1 CO2 regulator, visit the below article instead (US/North America only):
Required Tools & Materials
- #2 Phillips screwdriver
- 1 -1/8” Wrench or equivalent adjustable wrench (NA)
- 28mm Wrench or equivalent adjustable wrench (UK/EU)
- 3/8” Combination wrench or socket wrench
- Flush cut cable snips
- Zip ties
- Spray bottle with soapy water solution
NOTE: Prior to proceeding with the removal and replacement procedure, verify you received the correct CO2 Regulator for your region.
- There are two versions of the Gen 2 CO2 Regulator assembly to accommodate the different tank connection standards.
- North American Regulators use a CGA-320 tank adaptor.
- UK/EU Regulators use a BS341 No. 8 tank adaptor.
- If you have received the incorrect regulator version, do not continue with installation.
- Contact Bevi Support at 866-704-2384.
Remove and Replace Procedure
Task 1: Enter the Service Panel to open the door.
- Navigate to the Service Panel.
- Touch the Service button in the top left corner of the main dispense screen.
- Touch "Start Service" on the right side of the screen.
- Enter the access code “1986”.
- The door should open. If it doesn't, press the “Open Door” button.
- If the door does not open, please contact Bevi Support at 866-704-BEVI.
Task 2: Disconnect CO2 tank
- Once the door is opened, locate the CO2 tank.
- CO2 tank is located inside the door at the base of the machine.
- Turn off co2 tank.
- Turn tank valve clockwise to close.
- Using and adjustable wrench, disconnect high pressure hose from tank.
WARNING | |
HAZARDOUS VOLTAGE (120 V / 240 V). CONTACT MAY CAUSE ELECTRICAL SHOCK AND INJURY. DISCONNECT POWER BEFORE SERVICING. |
Task 3: Power off and remove both the top and center panels from the back of the Bevi 2.0
- Power off the Bevi
- At this point you will be working closely around some delicate electronics inside the machine. It is important the machine is turned off to avoid damaging any electrical components.
- With a #2 Phillips screwdriver, loosen the screws securing the panels to the back of the Bevi.
- The top panel has 6 screws, and the center panel has 4.
- You do not need to fully remove the screws, only loosen a few turns
- Once loose, you can lift the panels up and off of the mounting screws
Task 4: Disconnect the CO2 tubing from the Chiller.
- Depressurize the Co2 tubing.
- Locate the pressure relief valve on the CO2 Regulator.
- Pull the ring to open the relief valve and release all CO2 pressure.
- Remove the locking clip from the push-to-connect fitting on the Chiller.
- Disconnect the 1/4” CO2 tubing from the Chiller.
- New 1/4” tubing is supplied with the replacement Regulator.
Task 5: Disconnect the CO2 Pressure Sensor cable.
- Disconnect the CO2 Pressure Sensor cable from the BUC Board.
- The Pressure Sensor connector is located along the bottom, far right corner of the BUC Board.
- Cut any zip ties securing the Pressure Sensor cable
- The Pressure Sensor cable runs from the CO2 assembly up to the BUC Board.
- Cut zip ties securing the Pressure Sensor cable to any other wiring
NOTE: BE EXTREMELY CAREFUL NOT TO CUT OR DAMAGE ANY WIRING.
- Pull the Pressure Sensor cable through the access hole .
Task 6: Removing the CO2 Regulator Assembly
- Using a 3/8” wrench or socket, remove the two Nylock nuts securing the regulator bracket to the chassis.
- Once mounting hardware is removed, the CO2 Regulator bracket can be removed by carefully pulling the co2 assembly out from the back of the machine
- Note the routing of the high pressure CO2 hose for reference during reinstallation.
Task 7: Installing Gen2 CO2 Regulator Assembly
- Feed the CO2 tube through the existing access hole through the front of the machine.
- NOTE: US/NA regulators ship with an washer size indication card and 6x replacement washers.
- Remove the beaded zip tie securing the washers and indication card from the high pressure hose.
- UK/EU specific regulators will not include the card.
- NOTE: US/NA regulators ship with an washer size indication card and 6x replacement washers.
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- The high pressure hose feeds through between the chassis and the buffer tank, and out the front of the machine from the access hole behind the filter.
- Once the hose is in place reinstall the beaded zip tie with washers and indication card if removed.
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- Locate the regulator bracket onto the two mounting studs in the machine.
- Using a 3/8” wrench, attach the metal bracket with the two 3/8” Nylock nuts provided with the assembly.
- Connect the pre-installed ¼” CO2 tubing from the Regulator to the CO2 In fitting on the Chiller.
- The CO2 tube routes behind Manifold 1 down to the chiller.
- Ensure that the tubing is fully seated into push-to-connect fitting.
- Reinstall red locking clip.
- Reconnect the pressure sensor cable to the BUC board.
- Route the cable up through the access hole to the BUC Board.
- Ensure the connector is fully seated and clicks into place.
- Secure the pressure sensor cable with 2x zip ties as shown in the images below.
- Reconnect high pressure hose to CO2 tank.
- The replacement Gen 2 CO2 Regulator Assembly includes 6x replacement CO2 washers.
- Insert the provided CO2 washer into the high pressure tank connection.
- The US/NA Gen 2 Regulator uses the smaller diameter green washer - Part Number 720-0276.
- UK/EU specific Regulators use a large diameter white washer - Part Number 720-0309.
- NOTE: EU CO2 washers are not available for sale from Bevi.
- Tighten the high pressure hose to the tank.
- Open the CO2 tank valve.
Task 8: Access the Troubleshooting Tools menu
- Power on the Bevi.
- Navigate back to the Service Panel screen, then press the “Alerts and Maintenance” button.
- On the lower left hand side of the Machine Alerts screen, press “Troubleshooting Tools”.
Task 9: Confirm that you have adequate CO2 pressure
- Once the new CO2 Regulator Assembly is fully installed and pressurized, it is important to check the system for any leaks and that the pressure sensor is working properly.
- With the CO2 tank turned on, check the the CO2 pressure reading.
- Locate the “Data” section of the Troubleshooting Tools menu.
- In the “Chiller” data, you will find the CO2 pressure reading.
- You should see at least 700psi.
- If you have NO CO2 pressure, make sure the CO2 tank is open.
- If CO2 pressure is NaN psi, recheck the CO2 pressure sensor connection at the BUC Board.
- If CO2 pressure is much lower than 500psi, check both the high pressure hose, and the CO2 supply tubing for any twist or kinks.
- If there are no issues with the high pressure hose or the supply tubing, the CO2 tank may be low and needs to be replaced.
Task 10: Check for leaks
- Using soapy water, spray down all fittings and connections for the CO2 Regulator assembly. Leaks will present with small bubbles coming from the fitting or connection.
- Check the high pressure hose and all connection points at and around the tank.
- If leaking from the tank connection, recheck that the nut is properly tightened onto the tank.
- If leaking from any of the other fittings shown below, the high pressure hose assembly may be faulty.
- Check the CO2 Pressure Sensor and Regulator Assembly for leaks.
- Repeat the soapy water test on all connections and fittings.
- Check the high pressure hose and all connection points at and around the tank.
Task 11: Fill Carbonator and Test Sparkling Dispense
- From the Troubleshooting Tools menu, pour sparkling water using the dispense controls.
- Dispense SPARKLING for 5 seconds, then wait 30 seconds (demand pump will run attempting to fill the carbonation tank, then shut off).
- Repeat the 5-second dispense + 30 second wait until the Carbonator Fill reads "Yes" (this should take 5 - 10 cycles).
- If sparkling dispense has little or no carbonation, purge the carbonator:
- Turn off the buffer tank.
- Turn off source water.
- Dispense sparkling from TT tools until only CO2 gas is coming out from the nozzle.
- Turn on the buffer tank.
- Turn on source water.
- Repeat the filling process from Task 11, Step 1.
- Exit Troubleshooting Tools and go back to the main dispense menu.
- Touch “Back to Alerts”
- Touch “Finish Service”
- Test all drink options to verify the machine is functioning properly.
- Reinstall the back panels.
If you need any further assistance, please contact Bevi Technical Support at support@bevi.co, or call our support line at 866-704-2384 (866-704-BEVI)