1. Air polluted with oily particles and suspended fumes is sucked in from the machine tool cabin and conveyed through the intake port to the filters by the vacuum generated by the centrifugal fan. Here, the principle of coalescence, the propensity of oil droplets to aggregate with each other, is exploited, which allows accumulation and conveyance toward the base of the collection container.

2. The air rich in oil particles passes from the inside to the outside of the filter chamber, resulting at the end of the process completely purified of pollutants. Oily droplets separated from the air stream do not undergo any kind of treatment and can therefore be recovered and reused.

3. A drainage tube under continuous “overpressure” effectively recovers recondensed mists by allowing them to be fed directly back into the machine tool.