• Consistenly high collecting efficiency
• Longest possible service intervals.
• The filtered air can usually be returned to the premises
• The returned oil can be used for recycling
• ODF filter cassette can usually be washed
• Low noise level

Functional description
Contaminated air is sucked into the inlet (1) in the lower section of the filter unit and passes through an Absolent filter (3), where most of the oil particles are arrested. Before the filter becomes saturated with oil, the oil is drained down to the bottom of the unit that serves as a collection vessel.

The oil is then conveyed back to the machine, to a receptacle or to a central purification system (2).

The air passes on through another Absolent filter (4), where the remaining larger particles are arrested, and then through a HEPA filter (7) to the fan.

By now, the air is usually so clean that it can be returned directly to the premises.