Agilent Technologies 6850 Series II User Information page 148

Cleaning the inlet
It is unlikely that the inlet will frequently require thorough cleaning as
described below; however, deposits from injected samples occasionally build
up inside the purged packed inlet. Before cleaning the inlet, replace the column
liner and insert with clean ones. See
"Installing a glass insert" on page
inlet.
Materials needed:
•
•
•
1.
2.
3.
4.
5.
6.
Released: March 2004
Cleaning brushes—The FID cleaning kit contains appropriate brushes
(part no. 9301-0985)
Solvent that will clean the type of deposits in your inlet
Compressed, filtered, dry air or nitrogen
If you have entered parameters that you do not want to lose, store them as
a method.
Turn off the GC and unplug it.
Turn the inlet pressure off at the source.
Let the heated zones (inlet, detector, oven, and valve box) cool to room
temperature.
If the septum is worn out or dirty, replace it. See
page 139 for instructions.
Remove the column and the column liner and insert. See
Traps" on page 21,
insert" on page 138
6850 Series II GC User Information
"Installing a liner" on page 137
138. If the problem remains, then clean the
"Installing a liner" on page
for details.
Routine Maintenance: Inlets
Maintaining a purged packed inlet
and
"Changing septa" on
"Columns and
137, and "Installing a glass
page 148 of 256