Honeywell GasAlert Max XT II User Manual page 69

1. Deactivate the detector.
2. Remove the pump inlet screw and the pump inlet. Refer
to Figure 13.
3. Remove the six machine screws from the rear shell.
4. Because the pump hose is connected to the rear shell
and front shell pump, carefully remove the rear shell by
lifting upward and tilting to the left. The front and rear
shells are laying flat side by side
Figure 10. Front and Rear Shells Side by Side
(Figure 10.).
5. Remove the two PCB screws.
6. Lift the PCB upward and tilt to the left. Lay the PCB
(sensors facing up) onto the rear shell.
7. For CO, H S, and LEL sensors, slide outward to remove.
2
To remove the O sensorgently insert a screwdriver to the back
2
of the oxygen sensor to push out the sensor. Refer to
Figure 11. Remove the O
Detectors that are configured for 1, 2, or 3 gases may contain a
dummy sensor in one of the four sensor locations.
8. Insert the new sensor(s).
9. If required, replace the sensor filter.
GasAlertMaxXT II
Maintenance
Figure 11.
Sensor With a Scredriver
2
Note
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