Replacing The Filter & Sensor

13.Replacing The Filter & Sensor

The sensor needs to be replaced when it is unable to be calibrated or behaves erratically. Also, the filter should be inspected periodically, and it should be replaced if it shows signs of accumulated dust, dirt, or debris.

13.1.Filter Color Reference

One of the holes in the sensor cover has a clear plastic window. While the other holes allow ambient air (and dirt, debris, etc.) to reach the filter, the window keeps the part of the filter under it clean. As a result, it is easy to visually confirm that the filter needs replacement by simply comparing the clean spot with the other spots.

13.2.Removing The Cover

Remove the front cover by using the tab end of the calibration cap or a flat-blade screwdriver to pry it upwards from the slot. This exposes the sensor with its filter attached.

13.3.Replacing The Filter

If the filter appears dirty, replace it by peeling it off the sensor