No signal using QDa - WKB9029

SYMPTOMS

Instrument exhibits any or all of the following symptoms:

• No  or low signal intensity
• Clean sample cone and cone gas nozzle
• New conductive O-ring, 700009810 O-ring conductive 7.10 I/D x 1.60 c/s
• No error messages
• Calibration beam okay
• No Capillary Voltage
• Solvent peaks on the tune page are of low intensity and appear "scratchy"
• Spluttering of solvent when flowing through the probe

ENVIRONMENT

• ACQUITY QDa Mass Detector
• ACQUITY UPLC H-Class
• ACQUITY UPC2
• MassLynx
• Empower

CAUSE

Blocked probe

FIX or WORKAROUND

Replace the probe, 700009642 ESI Probe Assembly 500 mm or 700009641 ESI Probe Assembly 250 mm.

ADDITIONAL INFORMATION