Replacement Procedures; Replacing The Entire Detector - Agilent Technologies 6890 Series Service Manual

Gas chromatograph

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Flame Photometric Detector (FPD)

Replacement procedures

Turn off power to the gas chromatograph and disconnect the main power

cord. Remove the detector cover, the right side cover, the RFI cover, and

the top rear panel.

Always turn the main power off before replacing the entire detector assembly.

Allow time for heated zones to cool to safe temperatures.

Turn off all gas flows at the source.

Inside the oven, remove the column to the FPD.

To avoid damaging the printed circuit board electronics, use a grounded wrist

strap (part no. 9300-1408) and connect it to a bare metal surface of the GC.

Trace the wires from the heater/sensor cables to their connections on

the GC. Note these locations, then remove the heater/sensor connectors

from the GC. If the actuator solenoid bracket is to be removed, remove

the two mounting screws, disconnect the connector from the main board,

and remove the bracket.

Agilent 6890 Gas Chromatograph Service Manual

6890a 6890 plus