The SFD is a wall-mounted filter unit for use with one (FAN-28 or FAN-42) or two (FAN-28) fans and extraction arms.
The SFD contains an aluminium spark arrester and a square disposable cellulose cartridge filter. This cartridge filter is
with a precoat to extend filter life and improve filter efficiency.
A filter clogging indicator shows when the filter needs to be replaced.
The SFD system is based on the DuraFilter mechanical filter system and has been designed for low to regular use
Welding operation. The SFD is a completely mechanical system that does not require any electrical components
electrical components. It is a simple, effective and economical solution for filtering dry welding fumes. The system is
equipped with a dirt indicator as standard, which checks the extraction performance and signals when the filter needs to be changed.
The contaminated fume is extracted by an external extraction fan via a spiral tube or flexo hose into the
Welding fume filter and thus reaches the centre of the filter. In the spark arrester, the separation of the larger
Particles and the sparks. The air is then cleaned by the filter (with a filter surface area of approx. 50 m²),
whereby almost all particles (up to 0.3 1-1m) are captured. The air leaves the filter via the air outlet or outlets
cleaned air leaves the filter and can either be returned to the workplace or discharged outside.
The mechanical DuraFilter can be equipped with a maximum of 2 extraction arms. The SFD was designed for welding operations in
different work areas where dry welding fumes are released. The SFD system is
together with the 50m² DuraFilter is virtually unrivalled. The disposable cassette filter was specially developed for the
Filtering welding fumes. Its special design and the SurfacePlus treatment give it
extraordinary features. For the welder, for example, this results in a strong and, above all, constant
Extraction performance that is maintained over a longer period of time. The DuraFilter has a much longer service life
Than a conventional cassette filter. This allows you to drastically reduce operating costs.
These features ensure that the stationary SFD welding fume extraction system is a reliable and economical option
for removing welding fumes from your work areas.
Advantages
▪ Mechanical system without electrical components
▪ Simple, effective and economical filtering of dry welding fumes
▪ Integrated dirt indicator for checking the extraction performance and filter change indicator
▪ When using the DuraFilter, 50m² large, unrivalled filter surface can be combined with fan
fAN-28 and max. 2 extraction arms
Applications
▪ MIG-MAG/GMAW welding (annual consumption: <700 kg/1500 lbs)
▪ MIG welding
fCAW welding (annual consumption: <700 kg/1500 lbs)
▪ Stick/MMAW welding (annual consumption: <500 kg/1100 lbs)