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Waters

Pressure fluctuations on ACQUITY H-Class QSM - WKB19400

Article number: 19400

SYMPTOMS

  • Pressure fluctuates

ENVIRONMENT

  • ACQUITY H-Class Quaternary Solvent Manager (QSM)

CAUSE

Blockage in gradient proportioning valve (GPV).

Affects either A/B solvent lines or C/D solvent lines.

FIX or WORKAROUND

Replace the dual-channel GPV (700005161) for the affected solvent lines.

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