CONCERN: Customer reports that the WHIRLPOOL dishwasher is not cleaning the dishes. Model WDF302PADS2 CAUSE: Dishwasher has soap and scum build up. CORRECTION: Performed dishwasher cabinet clean out, cleaned dishwasher sump and chopper area to remove debris. Cleaned spray arms as best as possible, installed citrus acid solution and ran machine to disinfect and clean spray ports and sump area of mold and mildred residue. Operation now normal.