Backflow Preventer Remove and Replace, CT 1.5 (Compact Chiller)

Overview

Use this guide to remove and replace the Backflow Preventer in the Countertop 1.5 Compact Chiller.

In this article (click to jump)

• Required Tools & Parts
• Remove and Replace Procedure
  • Task 1: Depressurize the water system.
  • Task 2: Power Off the Bevi.
  • Task 3: Remove the chiller from the cabinet.
  • Task 4: Remove the right side panel.
  • Task 5: Remove the Backflow Preventer.
  • Task 6: Install the new Backflow Preventer.
  • Task 7: Reinstall the Chiller.
  • Task 8: Fill the Buffer Tank and Ice Bank.

Required Tools & Parts

• Part #720-0334 - FRU - BACKFLOW PREVENTER - VENTED
• #2 Phillips Head Screwdriver
• Flush cut pliers
• Small bucket or collection container

Remove and Replace Procedure

Task 1: Depressurize the water system.

1. Turn off the water source to the Compact Chiller.
2. Open the front access panel.
3. Turn off the Buffer tank.
   1. Rotate the shut off valve to the CLOSED position.

4. Navigate to the Troubleshooting Tools screen.
   1. Touch the service icon in the upper left corner.
   2. Touch "Start Service".
   3. Enter the PIN to access the service panel.

5. On the left side of the screen, touch "Machine Alerts".
   • Touch "Troubleshooting Tools".

6. Place a container under the nozzle, and pour COLD water until water is no longer dispensing.

Task 2: Power Off the Bevi.

1. Power off the Bevi using the power switch on the front of the chiller.
2. Disconnect the power cord from the back of the chiller.

Task 3: Remove the chiller from the cabinet.

1. Carefully lift the front of the chiller so the locating tabs on the bottom can come up and out of the ventilation holes.

NOTE: Avoid spilling water from the ice bank by taking extra care to keep the chiller flat and level, and minimize any excess handling.

2. Slide the chiller forward so the front hangs over the edge of the cabinet.

   

3. Remove the red locking clip and disconnect the 3/8" water-in tube from the back of the chiller.
   • NOTE: This step may not be necessary if there is enough slack on the water line to fully remove the chiller without putting tension on the tubing.

4. Lifting from the front and the rear grab handle, carefully lift the chiller out of the cabinet and place on the floor.

Task 4: Remove the right side panel.

1. Using a #2 Phillips screwdriver, loosen the two screws securing the right side panel of the chiller.
2. With the screws fully loosened, lift the panel up and out of the locating tabs at the bottom.
3. Place the panel to the side.
4. With the panel removed, you now have access to the Backflow Preventer.

Task 5: Remove the Backflow Preventer.

1. Using cable snips, cut the zip tie securing the backflow preventer to the plastic panel mount.
   1. Take care not to damage any tubing when cutting zip ties.
2. Pull the backflow preventer slightly out from the side of the chiller to allow for easier access.

3. Disconnect the input and output tubes from the push to connect fittings on the Backflow preventer.
   1. If present, remove the red locking clips.
   2. Disconnect the 1/4" to 3/8" stem adapter from the top.
   3. Disconnect the stem elbow from the bottom.

4. Remove the Backflow preventer from the Compact Chiller.

Task 6: Install the new Backflow Preventer.

1. Unbox the new Backflow Preventer.
2. Insert the supplied zip tie into the plastic mounting tab.

3. Reconnect the input and output tubes to the Backflow Preventer fittings.
   1. Ensure the backflow preventer is in the correct orientation, with the arrow indicating flow in the upward direction.
   2. Ensure the fittings are fully seated.

4. Secure the backflow preventer in place with the new zip tie.
   1. Ensure that the vent fitting is facing backwards towards the fan and copper coils.
   2. If the vent fitting is facing out towards the side panel it could cause a leak out of the chiller.
   3. If needed, pliers can be used to pull extra tension on the zip tie.
   4. Using flush cut snips, cut off the excess zip tie.

Task 7: Reinstall the Chiller.

1. Reinstall the side panel.
   1. Ensure the locating tabs slot into place
   2. Tighten the screws to secure the panel.
2. Carefully lift the chiller into place in the cabinet.
   1. Ensure the locating tabs on the bottom of the chiller fit into the ventilation holes and the chiller sits flush on the cabinet floor.

Note: Avoid spilling water from the ice bank by taking extra care to keep the chiller flat and level, and minimize any excess handling.

3. If it was disconnected during removal, reconnect the 3/8" water supply tube.
   1. Ensure the tubing is fully seated into the push to connect fitting.
   2. Reinstall the red locking clip.
4. Reconnect the chiller power cord.
5. In the front access panel, open the buffer tank valve.
   1. NOTE: Confirm that the Filter Flush valve is in the closed position.
6. Power on the chiller.

Task 8: Fill the Buffer Tank and Ice Bank.

1. Once the chiller is reinstalled, navigate back to the troubleshooting tools menu.
2. In the front access panel, confirm the buffer tank valve is in the open position.

NOTE: Confirm that the Filter Flush valve is in the closed position.

3. Confirm the water source is turned on.
4. From the "Water" controls menu, open the inlet solenoid.
   1. This will allow water to enter the chiller and fill the buffer tank.
   2. While filling the buffer tank, observe the internal water pressure increasing in the Data section.
   3. Once water pressure has stabilized, the buffer tank should be full.

5. Confirm the Ice Bank is full.
   1. After removing and reinstalling the chiller, it is possible the ice bank is no longer full.
   2. In the Chiller Data section, confirm that Chiller "Full" reads YES.
   3. If the chiller is not full, press "Start" in the Chiller Controls menu to fill the ice bank.

6. Once the Buffer Tank and Ice Bank are filled, test the functionality of the Bevi.
7. Dispense both Cold and Sparkling water to verify they are working properly.
8. Press "Back" at the top right corner of the screen to exit the Troubleshooting Tools menu.
9. Be sure to resolve any machine alerts that may have fired while servicing the machine.

If you have any questions or need further assistance, please contact Bevi Technical Services at support@bevi.co, or call our support line at 866-704-2384 (BEVI)