To Change The Septum On The Mmi - Agilent Technologies Agilent 7890 Series Maintenance Manual

To Change the Septum on the MMI

WA R N I N G
Maintaining Your GC
1 Gather the following:
• Replacement septum. (See
the MMI" on page 128.)
• Wrench, hex for changing septum
• 0- or 00- grade steel wool (optional)
• Tweezers
Load the inlet maintenance method
2
to become ready.
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.
Remove the septum retainer nut or Merlin cap.
3
4 Use tweezers to remove the septum or Merlin Microseal
from the insert assembly. Do not gouge or scratch the
interior of the insert assembly.
Septum retainer nut
Septum
Insert assembly
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).
6 Install the septum retainer nut or Merlin cap and
finger- tighten. Tighten the septum retainer nut until the
C- ring is about 1 mm above the nut.
Maintaining the MMI
"Consumables and Parts for
and wait for the GC
8
137