A separator includes an electrically conductive flat plate and two electrically conductive channel plates superposed on each other with the electrically conductive flat plate interposed therebetween. The covering apparatus would comprise two layers, a first layer and a second layer, with the first layer being fabricated from an absorbent material, such as terry cloth and a second layer being fabricated from a waterproof material, such as vinyl plastic backing. The first side includes a first set of contacts suitable for electrically contacting an integrated circuit having a first configuration. Spatial portions of the laser radiation are refracted and focused into the volume of the unremoved material at this entry edge. The stack may include a diluent chamber and adjacent anion or cation exchange membranes between the product chamber, diluent chamber and concentrate chamber to respectively convey anions or cations across multiple chambers. The resulting fan door, in the closed position, covers an access area of the rear of the cabinet and longitudinally adjacent to the fan door is arranged in fixed manner an air-to-fluid heat exchanger, whilst covering a residual area of the rear of the cabinet and to which is articulated the fan door.