If the gas sensors were installed before delivery or no gas sensors are to be installed, skip these steps.
To remove the unit, first disconnect any connected cables, and then press the two tabs inward. Next, lift the unit off the mounting bracket as shown in figure 1.
Use an PH2 Phillips screwdriver to unscrew the sensor-house from the base as shown in figure 2.
Place the sensor-house upside down next to the base, without disconnecting the cable between them as shown in figure 3. Up to three gas sensors and one front-end module can be installed in the sensor-house. The front-end module is already installed from factory.
To remove the plugs, use a small Phillips head screwdriver as shown in Figure 4. Make sure the gas sensor is aligned with the mounting holes and pressed down before fastening the screws.
The gas sensors need to stabilize when the device is powered on. This may take several hours.
Use an PH2 Phillips screwdriver to screw the sensor-house back the base as shown in figure 5.
Double check that the cable between the sensor-house and base does not get squeezed in the seal between them.
