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Retention time and pressure irregularities on H-Class Bio - WKB29485

Article number: 29485

SYMPTOMS

  • Retention time shifts
  • Pressure fluctuates
  • Replacement of dual GPV and all pump tubing brought no improvement
  • Other H-Class Bio systems in the lab do not show this issue

ENVIRONMENT

  • ACQUITY HPLC H-Class Bio

CAUSE

Bad actuator

FIX or WORKAROUND

  1. Replace the actuator (700005409 - UPLC ACTUATOR, BIO QSM).
  2. Perform the pump leak test.

ADDITIONAL INFORMATION

 

gradient proportioning valve, UPQSM, UPQSM+, UPQSMBIO, UPQSMBIO+, UPSMFTN, UPSMFTN+, UPSMFTNB+, UPSMFTNBIO

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