ACQUITY I-Class SM-FL error: "Sample pressure low" - WKB86781

SYMPTOMS

• "Sample pressure low (##): possibly no wash solvent" error appears when trying to perform an injection.
• Sample and wash syringe leak tests pass.
• Needle seal leak test passes.
• Back pressure regulator passes.
• Needle seal and needle loop and volume characterizations pass.
• No visible leaks at wash manifold.

ENVIRONMENT

• ACQUITY UPLC Sample Manager
• ACQUITY UPLC I-Class
• ACQUITY UPLC I-Class PLUS
• ACQUITY UPLC M-Class
• nanoACQUITY UPLC

CAUSE

PEEK connector that connects the line that carries wash solution from the wash manifold to the SM/SM-FL needle wash station is lose or damaged.

FIX or WORKAROUND

Reconnect, tighten, or replace the fitting that connects the wash line to the needle wash station. 

ADDITIONAL INFORMATION