Field Controls Trio Plus Instructions D'installation page 13

Replacement of the Filters
The Filter indicator on the control panel will blink indicating the filters
require inspection and/or replacement.
It is recomended the pre-filter screen be inspected and cleaned at least
every 2 months. When there is dust on the surface of the pre filter screen,
remove it with a dust collector to extend the usage period of the filter.
The filters should be replaced every 6 months. However, the life of the
filter may differ according to the degree of pollution in the environment.
The filter can be replaced earlier if necessary.
HEPA and
carbon filters
In environments with poorer air quality the filters may need to be
replaced more frequently.
The used filter shall be disposed of as non-combustible refuse.
Replacement Period
The filters should be
replaced at least every
6 months.
Condition
Absorb the emission
amount of 3 cigarettes
every day