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Error during dynamic leak test: excessive back-leakage during compression - WKB28156

Article number: 28156

SYMPTOMS

  • Pump fails dynamic leak test
  • Error on accumulator pump: "excessive back-leakage during compression".

ENVIRONMENT

  • ACQUITY UPLC
  • ACQUITY UPLC H-Class
  • ACQUITY UPLC I-Class

CAUSE

Failure of accumulator check valve. Ball inside is not moving.

FIX or WORKAROUND

Replace accumulator check valve 700002968 (H-Class)

Replace accumulator check valve 700005273 (I-Class)

ADDITIONAL INFORMATION

 

id28156, A-30SDM, checkvalve, DLT, UPAQSM, UPBINARY, UPBINARY, UPBSM+, UPIBSM, UPIBSM+, UPPBSM, UPPQSM, UPQSM, UPQSM+, UPQSMBIO, UPSMPMGR

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