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Operation and Maintenance Instructions
Envistar Top 04-21
DSET.181201.00.EN
Continuous product development may give rise to specification changes without notice.
The aluminium filter is intended for use where the extract air contains grease
particles to avoid grease being sucked into the unit. The filter is a knitted flat-
type filter. The aluminium filter can be cleaned using hot water and a mild alka-
line detergent.
The carbon filter can be used to remove odours in the form of organic and odor-
ous gases/vapours. The carbon filters are fitted to the supply air side.. The car-
bon filters are Black Ridge filters, constructed as compact and highly efficient,
molecular filters. The filters are designed for one-time use and the filter is com-
bustible in its entirety.
Lifespan and filter control Carbon filter
The function and lifespan of the carbon filters depends on the volume of air
that passes through and on the molecular density of odorous substances. This
means that the time intervals for filter replacement can vary from unit to unit
depending on operation mode and the volume of odorous substances in the air.
Units delivered with control equipment (code MX) are equipped with the filter
control function – FLC (Filter Lifetime Control). FLC indicates when it is time to
replace the carbon filter. Indication is through an alarm on the Climatix display.
FLC calculates the volume of air passing through the carbon filters and triggers
the alarm for filter replacement when the preset value has been reached. The
volume of air passing through is measured in mega cubic metres (Mm³). The
function does not take into account the odour content of the air, which means
that the indication should be regarded as a recommendation for checking the
filter function. If no odours pass through, there is no need to replace the filter.
Preset FLC values are based on max. air flow over 12 months of full-time opera-
tion. If required, the value can be lowered in order to: - change to more frequent
filter replacement intervals for max. air flow - retain the filter replacement interval
