Routine Maintenance: General
Swagelok connections
Released: March 2004 6850 Series II GC User Information page 103 of 256
Early maintenance feedback
Four of the most frequently replaced or serviced parts on a GC are the inlet
septum, the column, the inlet liner, and the syringe. Using Early Maintenance
Feedback (EMF) and a G2629A Control Module, you can independently track
usage of these items by number of injections. After your preset limit on the
number of injections expires, you receive a warning message on the GC front
display. This warning prompts you to replace or service the item, but readiness
is not affected. You can still continue using the GC normally.
Always service the GC when not in a run or sequence. For details on how to set
up and use EMF, see the G2629A Control Module user information.
Swagelok connections
These connectors are widely used in gas chromatography. This procedure
minimizes dead volume and internal stresses inside swaged fittings.
Figure 14. Swagelok fittings
1. Secure a new female swage-type fitting in a bench vise.
2. Slide a new nut, back ferrule, and front ferrule onto the tubing. Make sure
their order and orientation is correct.
Correct
NutFront ferrule
Back ferrule
Insert tubing fully
Withdraw 1-2 mm
Tighten nut
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