ACQUITY H-Class QSM - Pressure fluctuations (Guided Troubleshooting) - WKB93279
Article number: 93279
SYMPTOMS
- Pressure fluctuations
- Unstable delta psi
- Delta psi above 20
ENVIRONMENT
ACQUITY H-Class Quaternary Solvent Manager (QSM)
STRATEGY
- Inspect lines for air bubbles and prime solvents - WKB28335
- Inspect degasser tubing for kinks and confirm degasser pressure reading - WKB9737
- Confirm that solvent filters and solvent sinkers are not clogged - WKB45863
- Possible sticky check valves after switching solvents - WKB55705
- Possible faulty check valves - WKB21289
- Blockage in GPV - WKB19400
- Possible leak at pump heads due to worn seals - WKB4833
ADDITIONAL INFORMATION
id93279, A-30SDM, checkvalve, gradient proportioning valve, pressure ripple, UPAQSM, UPPQSM, UPQSM, UPQSM, UPQSM+, UPQSM+, UPQSMBIO, UPQSMBIO, UPQSMBIO+, UPSMFTN, UPSMFTN+, UPSMFTNB+, UPSMFTNBIO