Split/Splitless Injector Maintenance; When Replacing The Septum; When Cleaning Or Replacing The Liner - Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual

Chapter 2
Maintaining a Split/Splitless Injector
17 Liner cap removal tool
18 Kit Assy Split line 1/8-in.

Split/Splitless Injector Maintenance

The S/SL (Split/Splitless) injector will normally be serviced by Thermo Fisher
Scientific authorized technical personnel.
In order to operate at peak performances, the injector requires maintenance from
the user. This maintenance includes:
•
•
•

When replacing the septum

The septum should be replaced at least after every 100-200 injections, or every
time a problem related to septum damage or wear occurs (refer to Chapter 19
Analytical Troubleshooting
the septum with a new one every time the liner is replaced.
The Injector temperature, when high, it makes a prematurely "aging" of the septum. 
CAUTION
It is good practice to replace the septum of the S/SL injector every week
independently on the number of injections done.

When cleaning or replacing the liner

The liner must be replaced periodically, depending on the number of injections
performed and the characteristics of the samples injected. Typical symptoms will
indicate that the liner must be replaced (refer to Chapter 19
Troubleshooting). The most common is the appearance of tailing peaks in the
chromatogram, particularly for polar compounds.
It is good practice to replace the septum every time the liner is replaced.
28
Table 2-1. Split/Splitless Injector parts identification table
the replacement of the septum
the cleaning or replacement of the liner
the replacement of the split line tubing
for more information). It is a good practice to change
Maintenance and Troubleshooting Manual
Split/Splitless Injector Maintenance
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Analytical