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Primary pump fails to compress during BSM dynamic leak test - WKB52648

Article number: 52648

SYMPTOMS

  • Accumulator passes leak test
  • Primary pump fails to compress at 12000 psi; cannot complete the dynamic leak test
  • Flow pulses when priming

ENVIRONMENT

  • ACQUITY UPLC BSM

CAUSE

A blocked in-line filter starves the primary check valve (passive).

FIX or WORKAROUND

  1. Replace the in-line filter (700002912 - ASSY, FILTER, IN-LINE, SS FRIT).
  2. Prime the pump for two minutes.
  3. Rerun the dynamic leak test.

ADDITIONAL INFORMATION

In-line filter assembly part number

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