- No flow from QSM
- No pressure readback in the console
- When priming through the console, no flow is seen from the vent valve tubing
- ACQUITY UPLC H-Class
- ACQUITY UPLC H-Class Quaternary Solvent Manager (QSM)
The primary pump is leaking.
FIX or WORKAROUND
- Rebuild the primary pump (700004747).