The mobile air cleaners Series C, with filtration system EXPANSION ELECTRONIC, thanks to the electrostatic precipitator are suitable for these applications: welding smoke, small welding station and precious metal welding, electronic circuit, welding station, optical, novelty and jewelry production. The A.F.C. System offers complete control of filtration in all conditions. Providing a visible check on filter performance. In addition to the A.F.C. System (Automatic Filter Control) all EXPANSION ELECTRONIC units are specified with automatic protection of electronic components.