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Waters

Shifting retention times within run on ACQUITY I-Class - WKB75244

Article number: 75244

SYMPTOMS

  • Shifting retention times on ACQUITY I-Class
  • B Pump primary unable to compress when running leak test

ENVIRONMENT

  • ACQUITY I-Class

CAUSE

Primary check valve is sticking.             

FIX or WORKAROUND

Replace the primary check valve (700004139 - ASSY, CARTRIDGE, I2V, HEXANE/THF 2 PK).

ADDITIONAL INFORMATION

Faulty accumulator check valves can also cause this problem.

id75244, checkvalve, UPIBSM, UPIBSM+, UPISMFL, UPISMFL+, UPISMFTIVD, UPISMFTN, UPISMFTN+

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