To get the best cleaning possible from your Baumatic dishwasher its important that the spray arms can spin freely and spray water onto the dishes being cleaned. If the little holes in the spray arms become clogged with food or lime scale they will not rotate and clean properly.
note the holes in the spray arm, remove the arm by unscrewing it from the basket or pulling it up from the mounting in the base of the machine, clean with warm water to remove food blockages from the holes.