350 Flame Photometric Detector (FPD)
Replacement procedures
4 of 36
Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Replacement procedures
Replacing the entire detector
1. 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.
Caution Always turn the main power off before replacing the entire detector assembly.
2. Allow time for heated zones to cool to safe temperatures.
3. Turn off all gas flows at the source.
4. Inside the oven, remove the column to the FPD.
Caution 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.
5. 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.
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