Agilent Technologies 6850 Series II - Page 139

Routine Maintenance: Inlets
Maintaining a purged packed inlet
Released: March 2004 6850 Series II GC User Information page 139 of 256
3. Remove the knurled nut at the top of the inlet. See Figure 28.
Figure 28. Installing a glass insert in a purged packed inlet
4. Carefully remove the old insert. A thin wire (such as a paper clip) may be
helpful when lifting the insert from the inlet. See Figure 28.
5. Using tweezers or similar tool, grasp the top of the insert and install in the
inlet with the flared end up.
6. If a capillary column is installed and the insert does not seat properly, you
must remove the capillary column, install the insert, and replace the
column.
7. Reinstall the knurled nut and tighten finger tight.
Changing septa
If the septum leaks, you will see symptoms such as longer or shifting retention
times, loss of response, and/or loss of column head pressure. Additionally, the
detector signal will become increasingly noisy.
Knurled nut
Insert
Flared end