What maintenance tasks do I need to perform on my dishwasher?

Regular maintenance includes: wiping up spills and splash-outs to prevent floor damage, cleaning the stainless steel door and tub edges to remove debris, checking and cleaning spray arm nozzles for obstructions, and inspecting the filter system (Large Object Trap, Fine Filter, and Micro Filter) for foreign objects. The filter system is self-cleaning during normal use but should be occasionally inspected. If your dishwasher will be unused for extended periods in freezing temperatures, have it winterized by a professional, and turn off the water supply if it won't be used for more than one month.