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Jun 2001
Mainframe
Agilent 6890 Gas Chromatograph Service Manual
Oven and Temperature Control 420
Replacing the oven sensor
Replacing the oven sensor
The oven temperature sensor can be replaced after removing the oven shroud.
WARNING Before proceeding, turn off the oven and let it and any heated zones cool
down. Turn off the main power switch and unplug the power cord.
1. Remove the oven shroud as described in the Replacing the oven shroud
assembly procedure in this section.
2. Loosen the two Torx T-20 screws securing the sensor retainer to the back
of the shroud.
Figure 420-7 Removing the shroud
3. Slide the old sensor out of the retainer. Thread a new sensor through the
opening in the rear of the oven.
4. Slide the new sensor under the retainer. One of the grill holes on the front
of the shroud is stamped. Make sure that the end of the sensor is
positioned behind the stamped hole before tightening the retainer.
Loosen
Retainer
Sensor
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