Overview
This guide will walk you through the step by step process for removing the Gen 1 CO2 regulator, and replacing it with either the same Gen 1 regulator assembly, or upgrade to a Gen 2 CO2 regulator assembly.
NOTE: Make sure you're using the right guide. This guide is for Gen 1 CO2 regulators to replace with another Gen 1, or upgrade to a Gen 2 regulator. The Gen 1 CO2 regulators were only used in US/North America.
If you are working with a Gen 2 CO2 regulator already (including all UK/European machines) and need to replace with the same style Gen 2 regulator, visit the Gen 2 article linked below:
If you are working with a Gen 2 CO2 regulator already (including all UK/European machines) and need to replace with the same style Gen 2 regulator, visit the Gen 2 article linked below:
Gen 1 CO2 Regulator for Standup 2.0 | Gen 2 CO2 Regulator for Standup 2.0 |
The CO2 Assembly is at the plumbing shelf in the back side of the Bevi Standup 2.0.
Required Tools & Materials
- #2 Phillips screwdriver
- Large adjustable wrench
- 3/8” Combination wrench or socket wrench
- Flush cut cable snips
- Zip ties
- Small bucket
- Spray bottle with soapy water solution
Removing the CO2 Regulator Assembly
Task 1: Enter the Service Panel to open the door to the Bevi 2.0
- 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 at the top right of the service panel.
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 turn off
- Using and adjustable wrench, disconnect high pressure hose from tank
Task 3: Access the Troubleshooting Tools menu
- From the main Service Panel screen, press the “Machine Alerts” button
- On the lower left hand side of the Machine Alerts screen, press “Troubleshooting Tools”
Task 4: Depressurize the CO2 Regulator Assembly
- In the Troubleshooting Tools menu, locate the Dispense controls in the lower left corner
- Place a small bucket under the dispense nozzle
- Press and hold the “POUR” button for sparkling water
- Pour ~1 Liter of sparkling water
- This will depressurize the CO2 supply, to make it easier to disconnect the tubing from the push-to-connect fitting on the CO2 assembly
Task 5: 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.
- Loosen the #2 Phillips screws in the corners of the panels
- 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 6: Disconnect the CO2 tubing from the CO2 Regulator Assembly
- Remove the locking clip from the push-to-connect fitting
- Disconnect the ¼” CO2 tubing from the Regulator Assembly
Task 7: Disconnect the CO2 Pressure Sensor wiring
- 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
- Pull the Pressure Sensor cable through the access hole
NOTE: BE EXTREMELY CAREFUL NOT TO CUT OR DAMAGE ANY WIRING
Task 8: Removing the CO2 Regulator Assembly
- Remove mounting hardware for CO2 Regulator Assembly
- The CO2 Regulator Assembly is secured with two P-Clamps, attached to the chassis with two 3/8” nylock nuts
- Using a 3/8” wrench or socket, remove the two nuts holding the p-clamps to the chassis
- Note the orientation of the p-clamps for reinstallation
- Once mounting hardware is removed, the CO2 Regulator Assembly 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
Installing the new CO2 Regulator Assembly
Task 1: Identify which version of the CO2 Regulator Assembly you are installing.
- If you are installing a replacement Gen1 CO2 Regulator Assembly, continue to Task 2.
- The Gen 1 Regulator will have a grey high pressure hose, with the Anti-Kink Spring on the regulator end, next to the pressure sensor.
- If you are installing an updated Gen 2 CO2 Regulator Assembly, skip to Task 3.
- The Gen 2 Regulator will have a black high pressure hose, with the Anti-Kink Spring on the end of the hose at the tank connection.
Task 2: Installing Gen 1 CO2 Regulator Assembly
- Feed the high pressure hose through the access hole to the front of the machine
- The high pressure hose fits through between the chassis and the buffer tank
- Feeds out the front of the machine from access hole behind the filter
- Mount the new CO2 Regulator Assembly to the chassis.
- Install the new p-clips onto the CO2 Regulator Assembly.
- Mount the p-clips onto the threaded studs in the chassis.
- The CO2 Regulator assembly should “hang” from the studs.
- NOTE: Installing the hardware upside-down will cause the CO2 supply tube to be too short.
- Reinstall the two 3/8” nylock nuts, and tighten.
- Reconnect CO2 Supply Tube.
- Connect 1/4” CO2 supply tube to the CO2 Regulator.
- Ensure that the tubing is fully seated into push-to-connect fitting.
- Reinstall red locking clip.
- Reconnect pressure sensor cable.
- Route the new cable through the access hole to the BUC Board.
- Plug pressure sensor connector into the BUC Board.
- Ensure connector is fully seated and clicks into place.
- Install new zip ties to secure cabling.
- Connect the high pressure hose to the CO2 tank.
- The replacement Regulator already has a new CO2 washer installed in the tank connection, do not add an additional washer.
- If there is no washer present, install a new washer. (Part #720-0250)
- Tighten the high pressure hose onto the CO2 tank
- The replacement Regulator already has a new CO2 washer installed in the tank connection, do not add an additional washer.
- Turn the tank valve counter clockwise to open the CO2 tank.
- Once the CO2 Regulator is installed, continue to Task 4.
Task 3: Installing Gen 2 CO2 Regulator Assembly
- Feed the CO2 tube through the existing access hole through the front of the machine.
- Remove the beaded zip tie securing the washers and instruction card from the high pressure hose.
- The high pressure hose fits through between the chassis and the buffer tank.
- Feeds out the front of the machine from access hole behind the filter.
- Once the hose in in place reinstall the beaded zip tie with washers and instruction card.
- Using a 3/8” socket, attach the metal bracket with the two 10-32 nuts provided with the assembly.
- Remove the old 1/4” CO2 In tubing from the Chiller.
- The old tube will be too short when using the Gen 2 Regulator.
- Connect the 1/4” tubing already connected to the new Regulator to the CO2 In fitting on 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.
- Ensure 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.
- The updated washer is GREEN.
- You MUST use the green washer when installing the Gen2 Regulator.
- Insert one of the provided CO2 washers into the high pressure hose fitting.
- The replacement Gen 2 CO2 Regulator Assembly includes 6x replacement CO2 washers.
- Tighten the high pressure hose to the tank.
- Once the CO2 Regulator is installed, continue to Task 4.
Task 4: Power on the Bevi
- Now that we have completed the work inside the Bevi, it is safe to power the machine back on.
Task 5: 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 700 psi.
- If you have NO CO2 pressure, make sure your CO2 tank is open.
- If your CO2 pressure is much lower than 700psi, check both the high pressure hose, and the CO2 supply tubing for any twist or kinks.
- If the are no issues with the high pressure hose or the supply tubing, your CO2 tank may be low.
Task 6: 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 high pressure hose and all connection points at and around the tank.
- Check the CO2 Pressure Sensor and Regulator Assembly for leaks.
- Repeat the soapy water test on all connections and fittings.
Task 7: Fill Carbonator and Test Sparkling Dispense
- From the Troubleshooting Tools menu, pour sparkling water using the dispense controls.
- Check and make sure your sparkling dispense is functioning properly.
- Dispense 1/2 liter of sparkling water.
- If sparkling dispense is functioning, reinstall back panels, and close door.
- If sparkling dispense has little or no carbonation, purge the carbonator.
- Turn off buffer tank.
- Turn off source water.
- Dispense sparkling from TT tools until only CO2 gas is coming out from nozzle.
- Turn on buffer tank.
- Turn on source water.
- Dispense SPARKLING for 5 seconds, then wait 30 seconds (demand pump will run attempting to fill carbonation tank, then shut off).
- Repeat the 5-second dispense and 30-second wait until the Carbonator Fill reads "Yes" (this should take 5 - 10 cycles).
- Dispense COLD water purge any trapped air.
- Dispense a drink to ensure all is working properly.
- Replace Back Panels.
If you have any issues or questions after following the above steps, please contact Bevi Technical Support at support@bevi.co or 866-704-2384 (866-704-BEVI).