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8
Maintaining the MMI
To Change the Septum on the MMI
130
Maintaining Your GC
To Change the Septum on the MMI
1
Gather the following:
•
Replacement septum, see
“Consumables and Parts for the Multimode Inlet”
•
Wrench, hex for changing septum
•
0- or 00-grade steel wool (optional)
•
Tweezers
2
Launch the GC maintenance wizard:
Maintenance > Inlets,
select the multimode 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).
WARNING
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 insert assembly. Do not
gouge or scratch the interior of the 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.
CAUTION
Overtightening the septum nut can cause contamination.
Septum retainer nut
Septum
Insert assembly
Summary of Contents for 8890
Page 1: ...Agilent 8890 Gas Chromatograph Maintaining Your Gas Chromatograph GC ...
Page 8: ...8 Maintaining Your GC ...
Page 22: ...2 Removing Covers To Remove the Electronics Cover 22 Maintaining Your GC ...
Page 142: ...8 Maintaining the MMI To Bakeout Contaminants from the MMI 142 Maintaining Your GC ...
Page 178: ...10 Maintaining the VI To Bakeout Contaminants from the VI Inlet 178 Maintaining Your GC ...
Page 208: ...12 Maintaining the TCD To Bakeout Contaminants from the TCD 208 Maintaining Your GC ...
Page 240: ...14 Maintaining the ECD To Bakeout the ECD 240 Maintaining Your GC ...
Page 264: ...16 Maintaining EPC Modules Installing or Replacing Frits in the PCM 264 Maintaining Your GC ...
Page 276: ...17 Maintaining a Valve To Install the Upper Valve Box 276 Maintaining Your GC ...