142 Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual
6
Troubleshooting and Diagnostics
Diagnostic Signals
Baseline Problems Deriving from Xenon Flash Lamp/Trigger Pack
Assembly
Problem Description
With the low noise of the Detector, the Xenon flash lamp or the trigger pack
assembly may cause periodic baseline instabilities at the end of lamp life.
Lamp instabilities come in many different forms. The period may vary from a
few seconds to hours.
Problem Verification
Perform the following steps to diagnose whether the lamp is the cause of the
baseline instability:
1 Ensure that the detector has been properly warmed up, see “Overview of
Diagnostic Signals” on page 141.
2 Flush the flow cell with water and start runs without sample injections
(blank runs).
3 Use a restriction capillary to remove any influence of the column.
4 If you see instabilities, stop the flow and compare.
a If there are no instabilities, it’s detector related and a replacement of the
trigger pack assembly (first) and lamp (second) is required.
b If there are still instabilities, check the system in front of the FLD (for
example for air leaks).
To Next Page
Loading...
Need help?
General
