Routine Maintenance: Inlets
Maintaining a purged packed inlet
Released: March 2004 6850 Series II GC User Information page 145 of 256
If you are using capillary columns:
• No-hole ferrule, 5020-8294
• Column nut, 5181-8830
• 7/16-inch wrench
If you are using packed columns:
• Solid Vespel plug, 0100-1372
• 9/16-inch wrench
Warning Be careful! The oven and/or inlet may be hot enough to cause burns.
This test requires either a Control Module or a ChemStation/Cerity Chemical to
edit setpoints.
Procedure
1. Load the SERVICE method or reset the inlet and oven temperatures to
OFF. Let the heated zones cool to room temperature. Also, make sure that:
• If you have entered parameters that you do not want to lose, store
them as a method
• If the detector is on, turn it off
2. Turn the inlet pressure off at the source.
3. Remove the column, if one is installed, and cap the column fitting. If you
are using a capillary column, insert a no-hole ferrule in the column nut to
create a plug. If you are using a packed column, use the Vespel plug.
4. Remove the old septum and replace it with a new one. For instructions on
changing septa, see “Changing septa” on page 139.
5. Inspect the O-ring and replace it if it is hard and brittle or cracked. See
“Changing the O-ring” on page 142 for instructions on changing the O-ring.
To Next Page
Loading...
Need help?
General
