Replacing The Transfer Line Fused Silica Liner - Agilent Technologies 6890 Series Operating Manual

Part 4. Maintaining the Detector

Replacing the transfer line fused silica liner

Occasionally the transfer line fused silica liner between the column and FPD
module must be inspected, cleaned, and/or replaced.
1. Turn off power to the gas chromatograph and disconnect the main power
cord. Remove the detector covers.
2. Allow time for heated zones to cool to safe temperatures.
3. Inside the oven, remove the column to the FPD.
Caution
Always turn the electrometer or the main power off before removing the PMT
housing to avoid destroying the tube.
Caution
In the next step, keep the open end of the PMT housing covered as much as
possible to avoid light damage to the tube.
4. Remove the photomultiplier tube assembly—or assemblies—from the
detector module; also remove the filter(s). Set them in a safe place.
The Flame Photometric Detector (FPD)
Replacing the transfer line fused silica liner
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