MeshGuard LEL IR & CO2 IR User’s Guide
40
7.3. Sensor Filter Replacement
The filter should be replaced when it is visibly dirty. If readings fluctuate up even after a zero
calibration, this may indicate a dirty filter.
1. Use the 3-pin end of the tool to unscrew and open the filter holder by turning it
counterclockwise.
2. Remove and discard the filter.
3. Place a new filter inside the monitor.
4. Replace the filter holder by turning it clockwise with the 3-pin end of the tool.
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