(HUCB) Head Unit Control Board Remove & Replace (Signature CT 2.0)

Overview

This guide will walk you through the step-by-step process to remove and replace the HUC Board (HUCB) in the Signature Countertop 2.0 (CT 2.0) Head Unit.

In this article (click to jump):

• Required Tools & Parts
• Remove and Replace Procedure
  • Task 1: Power Off the Bevi
  • Task 2: Remove the Shell
  • Task 3: Remove the HUCB
  • Task 4: Install the New HUCB
  • Task 5: Reinstall the Shell
  • Task 6: Confirm HUC Board is connected.
  • Task 7: Check for updates.
  • Task 8: Test the machine functionality.

Required Tools & Parts

• 720-0370 - FRU - HUC BOARD
• Flathead screwdriver or vehicle key
• #1 size Phillips head screwdriver
• Small container for holding loose screws

Remove and Replace Procedure

Task 1: 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 2: Remove the Shell

1. Remove the drip tray from the base of the CT 2.0 and place it to the side. 
2. Place one hand on the left and one hand on the right of the shell and twist toward one side until the shell releases from the front of the head unit. 
3. Insert a key or flatheaded screwdriver straight into the shell latch-release hole until the tool stops moving. 

CAUTION: It is possible to slip the tool underneath the latch. 

4. Lift the shell up to remove it from the CT 2.0. 

CAUTION: The shell may require some force to remove.

5. Locate the split nut securing the head unit to the countertop.
6. Turn the split nut counterclockwise by one or two full turns to loosen it.  

Task 3: Remove the HUCB

1. Rotate the CT 2.0 such that the HUCB is facing you.
2. Disconnect all 14 connectors from the HUCB.  
   1. 24VDC Power to HUCB cable
   2. USB-C cable
   3. 8x Flavor Pump Cables
   4. RFID Antenna
   5. Flow Meter Cable
   6. HUCB to Valve Cable 
   7. Nozzle LED Cable 

CAUTION: Do not pull directly on any of the cables; they are easy to damage and the wires may pull out of the connectors.

3. Use a #1 Phillips head screwdriver to remove the two screws securing the HUCB to the pump towers. 
   1. Take care not to drop the screws into the base of the head unit.
   2. Note: The bottom screw secures the flavor sense carrier to the HUCB. The flavor sense carrier is loose and will come out of the pump towers with the HUCB if the screw is not removed. 

4. Disengage the mounting snaps securing the HUCB to the pump towers.
   1. Mounting snaps are paired together and lettered G, H, K, and  L. 
   2. Simultaneously disengage one pair of the HUCB snaps and pull on the HUCB, starting with G and H. 

5. Once the HUCB has been removed from all snaps, slide it up and out of its locating features to remove it from the back of the pump towers. 

CAUTION: Do not grab any surface-mount components!

6. Once the HUCB has been removed from its mounting features, remove it from the flavor sense carrier. 
   1. There is a screw and a set of snaps (labeled Q and R) securing the HUCB to the flavor sense carrier.

Task 4: Install the New HUCB

1. Place the HUCB in the flavor sense carrier.
   1. Push the HUCB down to seat it in the three alignment features on the base of the flavor sense carrier.
   2. Engage snaps Q and R at the top of the flavor sense carrier. 

2. Place the HUCB in its alignment features. 
   1. Align the HUCB with its locating features and push down to slide it into place. 

3. Firmly push on the HUCB near the mounting snaps to secure the HUCB to the head unit going down the length of the HUCB.

4. Use a #1 Phillips screwdriver to reinsert and tighten all three of the HUCB’s mounting screws. 
5. Reconnect all of the cables to the HUCB.

Task 5: Reinstall the Shell

1. Rotate the head unit back to its original position.
   1. Take care not to twist any cables or wires underneath the countertop. 
2. Loosely place the shell onto the head unit. 
   1. Ensure proper alignment of the hooks on the front of the shell.
   2. Ensure no cabling or flavor lines are pinched in the shell prior to seating it. Components at risk of being pinched are:
      1. Flavor lines - pump to nozzle
      2. Flow meter cable 
      3. Cables from the touchscreen 
   3. Ensure the power cord is effectively routed through the port on the back of the shell.
3. Reseat the shell onto the head unit. 
   1. Firmly press on the top of the shell directly above one of the snaps to seat it into the touchscreen.
   2. Perform the same step on the other side of the shell. 
   3. Ensure the snaps fully click into place. 
4. Tighten the split nut underneath the countertop.
5. Replace the drip tray. 

Task 6: Confirm HUC Board is connected.

1. Reconnect the power cord to the back of the chiller.
2. Power on the Bevi and allow the CT 2.0 to fully boot up and load the dispense UI. 
3. Navigate to the Service Panel.
   1. Touch the service icon in the upper left corner.
   2. Touch "Start Service"
   3. Enter the PIN to access the service panel.

4. Enter Troubleshooting Tools

5. In the “Data” column under the Electrical tab, verify the HUCB is connected.  
   1. You should see HUC Board Connected = YES. 

6. If the HUC Board is not connected, power off the machine and troubleshoot the USB connections between the HUC Board and the SBC in the head.

Task 7: Check for updates.

After installing the new board, it is important to be sure the firmware is up to date. 

1. In the upper left corner of Troubleshooting Tools, check if there is an update available.  
   1. Touch the “UPDATE” button if present.  
   2. The Bevi will download the board firmware update. 

2. After downloading an update, the Bevi may need a restart. Touch “Restart” if a popup appears. 
3. Confirm that there are no updates available. 
   1. If the “UPDATE” button is still showing, press it again. 
   2. Once completed, it should read “Up To Date” in the top left corner of the Troubleshooting Tools menu.  

4. If you are unsure if the updates went through successfully, or if you need any assistance in confirming that the machine is up to date, please contact Bevi Support at 866-704-2384.  
   1. Bevi Support can assist in checking that the current software and firmware versions are up to date, and assist in pushing a remote update if required.  

Task 8: Test the machine functionality.

1. Touch the “Flavor and Enhancements” dropdown menu.
2. Hold a container directly under the nozzle.
3. Perform a short dispense of each water type.
   1. Cold water
   2. Sparkling water
   3. Ambient water
4. Press the “Prime all flavor/enhancement lines” button.

5. Validate that all eight flavor pumps are dispensing concentrate into the cup. 
6. Touch the “Electrical” drop down menu and ensure all readable fields are providing a value.

7. Ensure all fields of all drop down menus are providing data and no fields are reading “Unknown.”
8. Exit Troubleshooting Tools and enter the service menu. 
9. If all the above checks pass, exit out of the service menu and return the CT 2.0 to the dispense UI.

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)