Filtering device and method for operating same

A filtering device for filtering a fluid, the filtering device comprising:

• a housing having a receptacle, a fluid inlet channel, and a fluid outlet channel;
• a screen carrier movable inside said receptacle, the screen carrier having at least one cavity for receiving a screen support plate having a filter element,
• wherein the screen carrier is movable from a filtering position into a screen replacement position,
• wherein the screen carrier and/or the receptacle has a filling recess for filling the at least one cavity with fluid, which releases a flow cross-section having a size dependent on a position of the screen carrier in the receptacle to feed fluid from the fluid inlet channel and/or the fluid outlet channel into the at least one cavity, and
• wherein the screen carrier has at least one ventilation recess for releasing any air which is in the at least one cavity during filling;
• and
• a control unit configured to change the position and/or a feed speed of the screen carrier such that a fluid pressure in the fluid inlet channel and/or in the fluid outlet channel remains within predetermined pressure ranges while the at least one cavity is being filled,
• wherein the control unit is configured to change the position and/or the feed speed of the screen carrier in steps and repeatedly, or continuously, by means of control signals.