Dishwasher healthy maintenance

Dishwashers are a wonderful invention, but do need a little attention to keep them in good working order.
Before cleaning, switch off the electricity supply.
Clean filters after each use.
Spray arms should be cleaned in a a solution of washing-up liquid. Run water through the inlet of each spray arm to ensure that holes are not blocked with food debris.
To banish unpleasant smells coming from the dishwasher, sprinkle a couple of tablespoons of bicabornate of soda on the bottom of the machine before running a load.
To keep limescale and soap scum build-up at bay, periodically run a cup of white vinegar through the machine on a normal cycle. Alternatively, use one of the proprietary dishwasher cleaning products that are available.