A method for operating a filling machine for filling up liquid or pasty mass, the filling machine comprising a feed pump for conveying said mass, a vacuum pump for generating a vacuum in the feed pump, wherein the feed pump is connectable with the vacuum pump via a first channel and via an integrated collecting vessel for entrained ingredients, and a supply means, wherein the feed pump is additionally connectable by the supply means to an external collecting vessel via the first channel, where the supply means is a connection means, the method comprising:
- selecting an operating mode for the filling machine;
- and
- generating the vacuum in the feed pump by the vacuum pump, wherein
- in a first operating mode, an evacuation opening of the feed pump is connected to the integrated collecting vessel for entraining pasty mass via a first channel, and wherein in a second operating mode, the evacuation opening of the feed pump is additionally connected to an external collecting vessel via the first channel.