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8
Maintaining the MMI
To Clean the Septum Seat in the Insert Assembly of the MMI
132
Maintaining Your GC
To Clean the Septum Seat in the Insert Assembly of
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
•
Compressed, filtered, dry air or nitrogen
2
Manually set the inlet and oven temperature to < 40
°
C, and wait for the inlet, oven, and
other parts you might come into contact with inside the oven, to cool before continuing.
Alternately, place the GC in maintenance mode:
Maintenance > Instrument > Perform
Maintenance > Maintenance Mode > Start Maintenance.
WARNING
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
.
3
Slide the locking tab forward (counterclockwise). Lift the insert assembly straight up and
away from the inlet to avoid chipping or breaking the liner.
4
Remove the septum retainer nut or Merlin cap.
5
Use tweezers to remove the septum or Merlin Microseal from the retainer nut. See
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.
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 ...