A cleaning apparatus for cleaning articles to be cleaned includes at least one cleaning chamber; at least one conveying device configured to convey the articles to be cleaned in a conveying direction through the cleaning chamber, the at least one conveying device comprising a plurality of tracks arranged side by side; at least one nozzle system configured to act upon the articles to be cleaned with at least one cleaning fluid; at least one sensor configured to detect a loading of the conveying device with articles to be cleaned; and at least one control means programmed to select at least one operating mode of the cleaning apparatus corresponding to the loading of the conveying device detected by the sensor, and to propose the selected operating mode to a user of the cleaning apparatus by providing a visual indicator on one or several tracks of the conveying device.