Screening device and method for adjusting the tension at a screening device

A method for adjusting the tension of a plurality of endless and spaced-apart drive elements of a screening device, which is used for separating out and removing debris from wastewater, wherein the plurality of endless and spaced-apart drive elements are moved under tension on a circulating path with the aid of at least one drive motor of the screening device during the operation of the screening device, the method comprising the following steps:

• monitoring the energy consumption of the drive motor during the operation of the drive motor to move the plurality of endless and spaced-apart drive elements on a circulating path;
• monitoring the tension of the plurality of endless and spaced-apart drive elements;
• and
• increasing the tension of the plurality of endless spaced-apart drive elements as necessary until the energy consumption of the drive motor increases in a previously defined way.