Agilent Technologies Agilent 7890 Series Maintenance Manual page 113

Maintaining Your GC
• If you are using a cooling tower, grasp the three rings
and unscrew. The spring and duckbill septum may pop
out of the inlet when you remove the cooling tower. Be
careful not to lose them. If they do not pop out, use a
thin wire to remove them from the inlet. Insert the
replacement duckbill septum into the spring and place
in the inlet. Reattach the cooling tower assembly, then
finger- tighten.
For manual 200-µm injections with
fused silica needle
Before making an injection, check the alignment of the
4
entire assembly using the proper size syringe.
Restore the analytical method.
5
Reset the septum EMF counter. See
6
Counter in the Operation Manual.
Maintaining the COC Inlet
To Reset an EMF
7
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