Agilent Technologies 6850 Series II User Information page 154

Replacing the Teflon ferrule
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Released: March 2004
Load the SERVICE method or reset the inlet and oven temperatures to
OFF or turn the main power switch off. Let the heated zones cool to room
temperature. Also, make sure that:
• If you have entered parameters that you do not want to lose, store
them as a method
• If the detector is on, turn it off.
Unscrew the guide cap from the septumless head and remove the Teflon
ferrule.
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.
Guide the end of the syringe needle into the septumless head until the
ferrule meets the septumless head.
Tighten the guide cap until resistance is first felt.
Check for leaks when the syringe needle has been fully introduced.
If necessary, carefully tighten the guide cap until the inlet stops leaking.
6850 Series II GC User Information
Routine Maintenance: Inlets
Maintaining a PTV
page 154 of 256