Filter device and method for removing liquid paint over-spray

The invention relates to a filter device for removing paint over-spray from a crude gas flow (104) that contains over-spray particles, said device comprising at least one filter element (122) to which at least one portion of the crude gas flow (104) can be fed, and a clean gas chamber (124) to which the crude gas flow (104), filtered by means of the filter element (122), can be fed as a clean gas flow.; In order to obtain such a filter device with which, in the event of a filter rupture on at least one filter element (122) of the filter device, contamination of the clean gas side of the filter device and contamination of the regions lying downstream of the filter device in a painting installation containing said filter device can be kept to a minimum, at least one security filter (168) arranged downstream of the at least one filter element is associated with the clean gas chamber (124), by means of which security filter at least one portion of the crude gas flow can be filtered in the event of a filter ruptur