6 Maintaining the Purged Packed Inlet
To Change the Septum on the Purged Packed Inlet
74 Maintaining Your GC
To Change the Septum on the Purged Packed Inlet
1 Gather the following:
• Replacement septum, see “Consumables and Parts for the Purged Packed Inlet” on
page 66.
• 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. Wait for the GC to become
ready. The wizard will guide you through the maintenance steps described 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