PLYMOVENT SFD Instrucciones Para El Uso página 26

The mechanical welding fume filter functions
only if the harmful fumes are blown directly
through an extraction fan into the filter.
Therefore, never connect the SFD to the suction
opening of the extraction fan. The mechanical
welding fume filter has been designed to be
used in a configuration with one extraction arm
with one extraction fan or two extraction arms
with two fans. When using two arms+fans it is
necessary to mount a non-return valve (NRV).
When using two arms simultaneously, the
extraction volume per arm will be less.
0507300010/SFD/190303/D