To Clean The Septum Seat In The Septum Head Assembly Of The Ptv Inlet - Agilent Technologies Agilent 7890 Series Maintenance Manual

To Clean the Septum Seat in the Septum Head Assembly of the PTV Inlet

WA R N I N G
C A U T I O N
Maintaining Your GC
1 Gather the following:
• Replacement septum (See
the PTV Inlet"
• 5/8- inch wrench
• Tweezers
• Compressed, filtered, dry air or nitrogen
• Lint- free gloves
Load the inlet maintenance method
2
to become ready.
Be careful! The oven and/or inlet may be hot enough to cause
burns. If either is hot, wear heat-resistant gloves to protect your
hands.
Wear clean, lint-free gloves to prevent contamination of parts with
dirt and skin oils.
Remove the septum retainer nut or Merlin cap. If the
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septum head begins to turn during removal, support it
manually while removing the cap.
Unscrew the septum head assembly from the inlet and
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move it up and away from the inlet.
5 Use tweezers to remove the septum or Merlin Microseal
from the retainer nut. Do not gouge or scratch the
interior of the septum head.
6 Scrub the residue from the retainer nut and septum
holder with a small piece of rolled- up steel wool and
tweezers. Do not do this over the inlet.
Use compressed air or nitrogen to blow away the pieces
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of steel wool and septum.
Replace the septum head assembly on the inlet.
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Finger- tighten the septum head and then tighten an
additional 1/2 turn with a wrench.
Firmly press the new septum or Merlin Microseal into the
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fitting. (See "To Change the Septum on the PTV Inlet"
page 163.)
Maintaining the PTV Inlet
"Consumables and Parts for
on page 152.)
and wait for the GC
9
on
165