The vacuum separator consists of two main components, the collecting vessel B1 and the drainage vessel B2. A vacuum is created in the two vessels and the vessels filled with process water via tube and hose lines. When the limit level is obtained, the connecting valve between the two vessels closes and pressure builds in drainage vessel B2 to drain the content over strainer into the sewer. The contact lenses or lens remains collect in two switchable strainer vessels. The strainers must be emptied manually and are not included in the disinfection process, i.e., the strainer and the filter baskets must be cleaned manually.

At the end of a defined time, drainage vessel B2 is evacuated again and the connecting valve between the vessels opens. The drainage procedure starts again when the limit level in the vessel is reached. The procedure of the vacuum separator is controlled by a programmable controller. The operator operates the units via controls and a touch display. All processes are controlled automatically. Operating faults and off-limit warnings and alarms are displayed in uncoded format. Visual alarms are indicated at the control cabinet of the vacuum separator.