Removing/Replacing The Septum Head - Agilent Technologies 6890 Series Service Manual

2. Push the guide cap and the new Teflon ferrule over the syringe needle so
that at least 10 mm of the needle tip is exposed.
3. Guide the end of the syringe needle into the septumless head until the
ferrule meets the septumless head.
4. Tighten the guide cap until resistance is first felt.
5. Check for leaks when the syringe needle has been fully introduced.
6. If necessary, carefully tighten the guide cap until the inlet stops leaking.

Removing/replacing the septum head

The septum head connects to the inlet via a free-spinning retaining nut.
1. Turn off the inlet heater and allow it cool.
2. If replacing the septum head, disconnect the split vent and septum purge
lines.
3. Use a 5/8-inch wrench to loosen the retaining nut on the septum head.
Jun 2001
Programmed Temperature Vaporization Inlet (PTV)
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Replacement procedures
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