Column Installation - Agilent Technologies 6890 Series Service Manual

350 Flame Photometric Detector (FPD)
Replacement procedures
7. If removing the detector board(s), loosen the captive mounting screw in
each board bracket and remove each board from the GC.
8. If removing the EPC flow module, disconnect the ribbon cable from the
pneumatics PCB and remove the mounting screw in the top of the module.
If not removing the EPC flow module, disconnect the gang fitting at the
module. Inspect the O-rings in the gang fitting and replace if damaged.
Straighten the tubing from the gang fitting and slide the module out of
the GC.
9. Remove the four mounting screws in the FPD bracket and remove the
FPD.
10. Reassemble in reverse order.

Column installation

Special FPD adapters
The FPD uses special adapters for capillary columns and 1/8-inch OD PTFE
columns. The FPD Capillary Adapter allows fused silica columns as large as
530 µm ID to be run right to the base of the FPD flame, minimizing sample
tailing or loss of chemically active sites. The FPD 1/8-inch OD Adapter allows
installation of PTFE columns concentrically around the FPD fused silica liner,
eliminating exposed hot stainless steel.
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Detectors
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001