© Copyright AirBench Ltd 2022
Page 12 of 20
Filter indication - Mechanical gauge
Normal operation (Green)
If the needle is sat in the green area then this
indicates a system which is running well with no
air flow restrictions or blocked filters
Restricted pre-filter or main filter (Amber)
When the needle is sat showing a low running
pressure this is an indication that your pre-filter
or main filter is becoming restricted or has
become blocked.
An amber indication requires attention to the air
inlet mesh, pre-filter and main filter to be
cleaned as described above
