L2 - R4.6 Dispensing Warning

STEP 1 - Verify if the BiB is not empty or folded.

• Result 1 - The BiB is not empty or folded. 
  Start "Pump" chapter.
  
  
• Result 2 - The BiB is empty or folded. 
  Start STEP 2.
  
  

STEP 2 - Change BiB / Push the remaining ingredients in the BiB towards to the spout, and fill tube to see if the ingredients can be dispensed smoothly.

• Result 1 - The ingredients can be dispensed smoothly. 
  Start STEP 3.
  Root cause: Empty BiB / Folded BiB.
  
  
• Result 2 - Still dispense warning. 
  Start "Pump" chapter.

STEP 1 - Activate the malfunctioning pump, and measure the voltage at the control board connector for the corresponding pump. The expected reading should be 24V

• Result 1 - The reading is 24V. Control board functioning properly, continue diagnosing pump failure. 
  Start STEP 3.
  
  
• Result 2 - The reading is not 24V. Control board defective, replace control board and re-test.
  Start STEP 2.

STEP 2 - Replace the control board (see SOP here) and verify pump functionality.

• Result 1 - The pump works fine. 
  Start STEP 6.
  Root cause: The control board failed.

• Result 2 - The pump is still not working.
  Start STEP 3.

STEP 3 - Replace the pump (see fridge pump SOP / ambient pump SOP here) and verify pump functionality.

• Result 1 - The pump works fine. 
  Start STEP 6.
  Root cause: The pump failed.

• Result 2 - The pump is still not working 
  Start STEP 4.

STEP 4 - Inspect the pipeline for leaks that may reduce pump extraction efficiency.

• Result 1 - There are leaks. 
  Start STEP 5.

• Result 2 - There are no leaks. 
  Start "Flowmeter" chapter.

STEP 5 - Seal the leaks as follows, make sure no leaks, and start STEP 6.

Pipeline rupture: Replace the damaged section of the pipeline.

Incomplete connection sealing: Properly install the pipeline and clamps to their designated positions (following the Standard Operating Procedure - SOP).

STEP 6 - Make a drink to verify the resolution of the dispensing warning issue.

• Result 1 - No dispense warning pops up. 
  Issue close. (If the issue is closed after completing STEP 5, the root cause for your case is tubing leaks)

• Result 2 - Dispensing warning still happens.
  Start "Flowmeter" chapter.

STEP 1 - Flush the line with hot water and check if the flowmeter can read.

• Result 1 - The flowmeter is readable now.
  Start STEP 4.
  Root cause: the flowmeter clog.

• Result 2 - The flowmeter is still unreadable.
  Start STEP 2

STEP 2 - Replace the flowmeter (see fridge flowmeter SOP / ambient flowmeter SOP here), and verify flowmeter functionality.

• Result 1 - The flowmeter is readable now.
  Start STEP 4.
  Root cause: the flowmeter fail.

• Result 2 - The flowmeter is still unreadable.
  Start STEP 3.

STEP 3 - Replace the control board (see SOP here), and verify flowmeter functionality.

• Result 1 - The flowmeter is readable now.
  Start STEP 4.
  Root cause: the control board failed

• Result 2 - The flowmeter is still unreadable.  
  Escalate to PSE.

STEP 4 - Fill tube, and make a drink to verify the resolution of the dispensing warning issue.

• Result 1 - No dispense warning pops up. 
  Issue close.

• Result 2 - Dispensing warning still happens.
  Escalate to PSE.