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CT 1.5 No Water Dispensing Troubleshooting, Buffer Tank Pressure Sensor (Compact Chiller)

Updated

Overview

This article helps troubleshoot customer/technician complaints related to no water dispensing (CT 1.5, compact chiller). This may happen at or after install. The user will report that they are able to click dispense but, no water will dispense and may lead to gas out of sparkling water. Other alerts that may fire in turn with this are: Ice Bank Low and Early CO2 Runout.

In this article (click to jump):

Required Tools & Parts

  • Phillips screw driver
  • Small bucket or collection container
  • Pressure Gauge
  • 720-0336 - FRU - BUFFER TANK PRESSURE SENSOR (if needed)
  • 720-0340 FRU - CABLE - WATER PRESSURE SENSOR - KIT (if needed)

Troubleshooting Steps

Task 1: Check the water system.

  1. Verify buffer tank is open.
    1. Open the access panel on the front of the chiller.
    2. Confirm the buffer tank valve is in the open position.

bt open buffer tank valve ct compact chiller cc.png

  1. Verify water source pressure does not exceed the stated 80 psi maximum per the CT 1.5 Pre-Installation Guide.
    1. Turn off the water source.
    2. Disconnect the 3/8" water supply line from the water in fitting on the back of the chiller.
    3. Using a pressure gauge, confirm the source pressure is below 80 psi.

Task 2: Checking the water pressure data.

  1. 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.

ct 1.5 enter sp service panel.png

  1. On the left side of the screen, touch "Machine Alerts".
  2. Touch "Troubleshooting Tools"

enter TT CC compact chiller CT 1.5

  1. Open the Inlet Solenoid for 1 minute
    • From Water Controls, open the inlet, and wait 1 minute, then close.
  1. Turn off the water supply.
    1. Locate the shut off valve on the water line prior to the compact chiller.
    2. Turn the valve until it is perpendicular to the tubing to close.
  2. Check the water pressure data.
    • In the "Data" section under "Water", check and record the Internal Water Pressure, and Dispense Detect Pressure.

  1. Dispense Cold water to depressurize the system.
    1. Place a container under the dispense nozzle.
    2. Press and hold the Pour button for cold water until there is no water coming from the nozzle.
    3. Observe both the internal and dispense detect pressure while depressurizing.
  2. Confirm that the Internal Water Pressure has decreased.
    • After all the water has been dispensed, the internal pressure should be close to 0psi.
  3. If the internal pressure has not dropped below 5psi, but the dispense pressure has decreased, then there may be an issue with the Buffer Tank Pressure Sensor or its connection.

Task 3: Check Pressure Sensor harness connections.

  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.

CT 1.5 cc power off compact chiller switch unplug plug.png

  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.

CT 1.5 compact chiller pull out remove slide lift cabinet.png

  1. Slide the chiller forward so the front hangs over the edge of the cabinet.
  2. Remove the red locking clip and disconnect the 3/8" water in tube from the back of the chiller.
    • 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.

CT 1.5 connections back water in supply disconnected tube cc compact chiller.png

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

on floor sitting outside cabinet pulled out CT 1.5 compact chiller.png

  1. Remove the left side panel.
  2. Using a #2 Phillips screwdriver, loosen the two screws securing the left side panel of the chiller.
  3. With the screws fully loosened, slide the panel up to release the locating tabs at the base.
  4. Place the panel to the side.

left side panel removed compact chiller ct 1.5.png

  1. Remove the PCB panel.
  2. Using a #2 Phillips screwdriver, loosen the screw securing the PCB panel on the left side of the chiller.
  3. With the screws fully loosened, lift the panel to release the lower locating tab and remove.
  4. Place the panel to the side.

left panel and PCB buc panel removed compact chiller CT 1.5.png

  1. Locate the Buffer Tank Pressure Sensor below the Demand Pump.
  2. Depress the lock latch to release the connector, and disconnect the cable from the sensor.
    1. Inspect the cable and connector for any damage.
    2. Check for any loose wiring pins in the connector.
  3. Reconnect the cable to the pressure sensor.
    • Ensure the connector is fully seated and clicks into place.

Buffer Tank Pressure Sensor reseat compact chiller.png

  1. Locate the Pressure Sensor connector at the top right corner of the BUC Board.
  2. Depress the lock latch to release the connector, and disconnect the cable from the BUC Board.
    1. Inspect the cable and connector for any damage.
    2. Check for any loose wiring pins in the connector.
  3. Reconnect the cable to the pressure sensor.
    • Ensure the connector is fully seated and clicks into place.

pressure sensor sense harness compact chiller.png

  1. If any damage is found on the pressure sensor harness, it should be replaced.  
    1. 720-0340 FRU - CABLE - WATER PRESSURE SENSOR - KIT
    2. Contact Bevi Support at 866-704-BEVI (2384).

Task 4: Reinstall the Chiller.

  1. Reinstall the left side panel, and the PCB panel.
    1. Take care not to pinch any wiring in the panels.
    2. Ensure the locating tabs slot into place
    3. Tighten the screws to secure the panel.
  2. Reconnect the chiller power cord.
  3. Carefully lift the chiller into place in the cabinet.
    • Ensure the locating tabs on the bottom of the chiller fit into the ventilation holes and the chiller sits flush on the base of the cabinet.
  4. 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.
    3. Turn on the water supply.
  5. If it was closed, open the Buffer tank.
  6. Open the water supply.
  7. Power on the chiller.

Task 5: Retest.

  1. Repeat Task 2 from earlier in this document.
  2. If the Internal Water Pressure is now decreasing normally during a dispense, then the issue may be resolved.
    1. Exit the Troubleshooting Tools screen.
    2. Navigate back to the dispense screen.
    3. Test all water types to ensure machine is functioning properly.
  3. If the Internal Water Pressure continues to stay above 40psi after fully depressurizing the system, then the pressure sensor has failed and should be replaced. 
    1. 720-0336 - FRU - BUFFER TANK PRESSURE SENSOR.
    2. Contact Bevi Technical Services at 866-704-2384. 
    3. Replace the Buffer Tank Pressure Sensor.