7 of 24
Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Electron Capture Detector (ECD) 340
Replacement procedures
6. Disconnect the ECD vent tube at the rubber sleeve.
7. Use a 5/16-inch wrench to disconnect the 1/16-inch Swagelok union on
the anode purge line.
8. Remove the one Torx T-20 screw securing the top ECD detector cover to
the detector pallet and remove the cover.
9. Disconnect the anode signal wire from the detector.
Figure 340-6 Removing the cover, anode purge fitting, vent tube, and anode signal
wire
10. Fully loosen the four Torx T-20 screws on the detector pallet and lift the
pallet and detector from the GC.
11. Thread the heater/sensor leads out of the detector pallet and remove the
detector from the pallet.
Anode purge line
(disconnect fitting)
Remove ECD vent tube
Detector top cover
Remove anode signal wire
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