350 Flame Photometric Detector (FPD)
Replacement procedures
22 of 36
Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Replacing the ignitor glow plug
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.
Caution Always turn the electrometer or the main power off before removing the PMT
housing to avoid destroying the tube.
3. Pull the PMT housing off the detector module and remove the filter from
the detector. Set both in a safe place. Keep the open end of the PMT
covered whenever practical to avoid light damage to the tube.
4. Remove the exhaust tubing.
5. Remove the sheet metal cover. On the single wavelength detector, it is
held by two screws at the top and two at the bottom, while on the dual
wavelength detector it is held by two screws at the top.
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