Possible Cause

Remedial Action

Trap column aged or clogged

  1. Run the script: D01 - Test System Back Pressure with the parameter Test only trap column resistance.

  2. Write down the resistance value and compare it to a former result.

  3. If the resistance is too high for your application, run the complete backpressure test. Run the script: D01 - Test System Back Pressure.

  4. Check the test result and replace the clogged component if any.

  5. If you have replaced a component, run the backpressure test again: D01 - Test System Back Pressure.

Needle seat clogged

See Pressure, subsection High Backpressure.