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Waters

BSM unable to compress during leak test - WKB12857

Article number: 12857

SYMPTOMS

  • BSM compresses to about 9,000-10,000 psi during dynamic leak test, and then terminates with error: "unable to compress" on primary pump
  • Accumulator pump passes leak test
  • The pump is airtight between the check valve on accumulator pump and the vent valve

ENVIRONMENT

  • ACQUITY UPLC BSM
  • ACQUITY H-Class QSM
  • ACQUITY I-Class BSM

CAUSE

Traces of rust and scratches on the head support plate or the seal wash plate cause a leak between them.

FIX or WORKAROUND

Replace the head support plate (700002601) or the seal wash plate, or both.

ADDITIONAL INFORMATION

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