A fine filter assembly for a dishwasher includes a filter body, a filter screen coupled to the body; and a pressure relief tube. The device utilizes two sets of structures. The unit further comprises means for rotational mounting the cover on the housing at the coupling portion of the cover, an electrical circuit for connecting the battery source to the light source and a switch associated with said housing and said cover for closing and opening said electrical circuit. Covers prevent unauthorized persons from viewing confidential inputs to the keypad. A third number of parallel valve bores open into the color channel at third openings and a fourth number of parallel valve bores open into the color channel at fourth openings. If no different instance exists within the scope, new resources for the control are created and stored.