Agilent Technologies 6850 Series II User Information page 177

Depending on your analysis and injection technique, the inlet will have one of
the following septum nuts or a cooling tower assembly.
Septum nut for injections onto 250-
and 320-mm columns
Septum nut for injections onto
530-mm columns
Cooling tower assembly
(for manual injections only)
2.
Spring
3.
Septum nut
(250- and 320-mm
columns)
Septum
Spring
Released: March 2004
If you have a cooling tower assembly installed:
Remove the assembly by grasping it and turning counterclockwise. The
duckbill septum is underneath the cooling tower inside the spring. The
spring and 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.
Cooling tower assembly
Duckbill septum
Insert the duckbill septum into the spring and place them in the inlet. Reat-
tach the cooling tower assembly. Tighten it finger-tight.
If you have a septum nut installed:
Remove the septum nut by grasping the knurling and turning counter-
clockwise. The septum is probably attached to the septum nut. The spring
may also pop out when you remove the septum nut. Be careful not to lose
it. If the septum is not attached, you may need to use tweezers to grasp and
remove it.
6850 Series II GC User Information
Routine Maintenance: Inlets
Maintaining a cool on-column inlet
Septum nut
(530-mm columns)
Septum
Spring
page 177 of 256