Maintaining A Ssl Injector; When Replacing The Standard Septum; When Cleaning Or Replacing The Liner - Thermo Scientific FOCUS GC Instruction Manual

Chapter 15
Maintenance and Troubleshooting

Maintaining a SSL Injector

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 periodic maintenance from the user. This
maintenance includes:
•
•
•
•

When Replacing the Standard Septum

The septum should be replaced at least after every 200 injections, or every time a
problem related to septum damage or wear occurs.
It is a good practice to change the septum with a new one every time the liner is
replaced.
CAUTION Use original Thermo Fisher Scientific standard septum. Septa from other
manufacturers may show different rates of degradation.

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. 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.
You can replace the liner with a new one or clean the liner and reinstall it.
The following table shows the available types of liners and the indications for the
correct choice.
262
The replacement of the standard septum
The maintenance of the Merlin Microseal Valve when used insted of the
standard septum
The cleaning or replacement of the liner
The replacement of the carbon filter from the DPFC control module.

Maintaining a SSL Injector

Instruction Manual