7 Maintaining the Packed Column Inlet
To Change the Septum on the Packed Column Inlet
Maintaining Your GC 99
To Change the Septum on the Packed Column Inlet
1 Gather the following:
• Replacement septum. See “Consumables and Parts for the Packed Column Inlet” on
page 96.
• Septum nut wrench
• 0- or 00-grade steel wool (optional)
• Tweezers
2 Launch the GC maintenance wizard: Maintenance > Inlets, select the inlet, then select
Perform Maintenance > Replace Septum > Start Maintenance. The wizard will walk
through the steps needed to replace the septum (those same steps are repeated below).
Be careful! The oven and/or inlet may be hot enough to cause burns. If the inlet is hot, wear
heat-resistant gloves to protect your hands.
3 Remove the septum retainer nut or Merlin cap.
4 Use tweezers to remove the septum or Merlin Microseal from the retainer nut. Do not
gouge or scratch the interior of the septum head.
5 Firmly press the new septum or Merlin Microseal into the fitting. The metal parts side of
the Merlin Microseal should face down (toward the oven).
Septum retainer nut
Septum
Merlin Microseal and cap
Standard septum
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