Skip to main content

Water Pressure Sensor Cable Remove & Replace, CT 1.5 (Compact Chiller)

Updated

Overview

This guide provides instructions for removing and replacing the Water Pressure Sensor cable in the Countertop 1.5 Compact Chiller.  

In this article (click to jump) 

Required Tools & Parts

  • Water Pressure Sensor Cable, FRU P/N #111623-01
    Phillips Screwdriver (#2)
  • Flush cut cable snips 
  • Zip Ties
⏱️ This process takes approximately 10 – 20 minutes to complete.

Remove and Replace Procedure

Task 1: Power off the Chiller. 

  1. Power off the chiller using the power switch on the front first. 
  2. Once the switch is off, disconnect the power cord from the back of the chiller.
DO NOT UNPLUG THE POWER CORD BEFORE SWITCHING OFF THE CHILLER!

Task 2: Remove the Left Side Panel and PCB Panel.

  1. Rotate the chiller to access the left side. 
    • You will need to gently lift the front of the chiller so the bottom locating tabs can come out of the ventilation holes.  
    • Take care not to tip the chiller too much to avoid any water spilling from the ice bank.  
  2. Using a #2 Phillips screwdriver, remove the side panel, and PCB panel.  
  3. Loosen the 2 screws at the top of the side panel.
  4. Loosen the single screw at the top of the PCB panel.  
    • These are captive screws and will stay attached to the panels. 
  5. Lift up to release the bottom tabs and remove both panels.

Task 3: Disconnect the Dispense Pressure Sensor Cable. 

  1. Locate the Dispense Pressure Sensor at the top of the chiller, above the ice bank. 
  2. Carefully pull the sensor out of the side of the chiller to access the connector.  
  3. Depress the lock latch to release the connector, and disconnect the cable from the sensor.  

Task 4: Disconnect the Buffer Tank Pressure Sensor Cable. 

  1. Locate the Buffer Tank Pressure Sensor at the top of the chiller, above the ice bank. 
  2. Depress the lock latch to release the connector, and disconnect the cable from the sensor.  

Task 5: Disconnect Pressure Sensor harness from the BUC Board.  

  1. Locate the Pressure Sensor connector at the top right corner of the BUC Board. 
  2. Carefully press the lock latch to release the connector, and disconnect from the board.

Task 6: Remove the Pressure Sensor harness. 

  1. Cut the 4 zip ties that secure the harness to the other wiring. 
    • Be very careful not to cut or damage any wires.  

  1. Feed the BUC board connector end of the cable through the hole. 
  2. Remove the cable from the chiller.  

Task 7: Install the new Pressure Sensor Harness.

  1. Feed the BUC Board connector through the access hole to the PCB panel.  
  2. Connect the harness to the BUC Board. 
    • Ensure the connector is fully seated and clicks into place.  

  1. Route the Buffer Tank and Dispense Pressure sensor cables to the appropriate sensors.  
    • Both leads on the harness are labeled for easy identification.  

  1. Connect both cables to the pressure sensors.  
    • Ensure the connectors are fully seated and click into place.  
    • The Buffer Tank Pressure cable routes behind the panel and down to the sensor. 

  1. Install 4 new zip ties to secure the harness.  
  2. Tuck the Dispense Pressure Sensor back into place above the ice bank.  

  1. Reinstall the side and PCB panels.  
    • Slot the bottom locating tabs into place, and tighten the top screws to secure.  

  1. Carefully move the chiller back into place.  
    • Ensure the bottom locating tabs slot into the ventilation holes so the chiller sits flat on the base of the cabinet.  
  2. Plug in the power cord. 
  3. Power on the chiller. 

Task 8: Check the Water Pressure Sensor Data.

  1. Navigate to the Service Panel. 
    • Tap the gear icon (top left), tap Start Service, enter PIN (1986).

CT SP enter service panel

  1. Touch “Machine Alerts”.
  2. Touch “Troubleshooting Tools”.

  1. In the Data section under the Water tab, verify that the Dispense and Buffer Tank Pressure are both reporting correctly.  
    • If the water pressure data is “Unknown” or reading a negative pressure, power off the chiller (use power switch first) and recheck the pressure sensor cable connections.