- Accumulator passes leak test
- Primary pump fails to compress at 12000 psi; cannot complete the dynamic leak test
- Flow pulses when priming
- ACQUITY UPLC BSM
A blocked in-line filter starves the primary check valve (passive).
FIX or WORKAROUND
- Replace the in-line filter (700002912 - ASSY, FILTER, IN-LINE, SS FRIT).
- Prime the pump for two minutes.
- Rerun the dynamic leak test.