Skip to main content
Waters

Leak test fails on ACQUITY Solvent Manager - WKB20628

Article number: 20628

SYMPTOMS

  • Dynamic leak test fails on Primary and/or Accumulator pump
  • Pump head already rebuilt with new plungers, seals, tubing transducer/check valves (CV) and CV
  • Vent valve is functional
  • During the leak test the leak rate will drop and then gradually increase towards the end of the leak monitoring

ENVIRONMENT

  • ACQUITY UPLC BSM
  • ACQUITY UPLC H-Class Quaternary Solvent Manager (QSM)
  • ACQUITY Arc
  • ACQUITY UPLC I-Class
  • ACQUITY UPLC M-Class BSM

CAUSE

Erosion of pump head/seal wash housing and/or support plant

FIX or WORKAROUND

  1. Replace the seal wash housing on the failing pump
  2. Replace the support plant on the failing pump
  3. Replace the pump head of the failing pump
  4. Rebuild seals, plunger and CV
  5. Perform dynamic leak test to confirm leak rate is within acceptable limit. Refer to article WKB82103 for leak test specifications.

ADDITIONAL INFORMATION

 

 

Not able to find a solution? Click here to request help.