How do I clean the filter system in my dishwasher?
The filter system consists of a Large Object Trap, Fine Filter, and Micro Filter located under the lower rack. First, remove the bottom rack and grasp the filter assembly, turning it counterclockwise to remove it. Examine the Large Object Trap for debris and gently tap it upside-down on a flat surface to dislodge debris. Flush the Micro Filter clean by holding it under running water. To reinstall, return the fine filter to position and turn the locking nut clockwise until locked.
From the official Bosch Ascenta Dishwasher manual, page 14
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