Accumulator pump head is unable to maintain pressure during dynamic leak test - WKB277841
Article number: 277841
SYMPTOMS
- Dynamic leak test failure
- Accumulator pump unable to maintain pressure
- Seal wash primed, pump primed; pumps pressurized and delta psi is low
- Fittings and check valves were tightened, and no visible signs of leaks; accumulator still unable to maintain pressure
ENVIRONMENT
- ACQUITY UPLC
- ACQUITY UPLC BSM
- ACQUITY UPLC H-Class
- ACQUITY UPLC H-Class Bio
- ACQUITY UPLC H-Class Quaternary Solvent Manager (QSM)
- ACQUITY UPLC I-Class
- ACQUITY UPLC H-Class PLUS
- ACQUITY UPLC H-Class PLUS Bio
- ACQUITY UPLC I-Class PLUS
CAUSE
Faulty accumulator check valve
FIX or WORKAROUND
- Replace the accumulator check valve
- Prime and pressurize the pump head.
- Rerun the dynamic leak test.