TQD UPLC sensitivity gradually decreases - WKB98297

SYMPTOMS

• TQD UPLC sensitivity gradually decreases
• When confirm with setup reagent using infusion, there is no sign that it will decrease in a short time, and there is no change in intensity when switching to the positive/negative.

ENVIRONMENT

• TQD
• UPLC

CAUSE

It got heated because the RF2 generator fan stopped and the sensitivity was affected.

FIX or WORKAROUND

1. Replace the 700005470 ASSY, FAN, 35 X 35 X 10MM, 5VDC, 5.6 CFM

ADDITIONAL INFORMATION