Question: The oven should be cleaned regularly and any food deposits removed

Put a towel in clean water, squeeze by hand to let most of water goes out. Then put the towel in microwave oven                 and heat on full power for around 30 seconds. 
   
    The steam which comes from the wet towel could get some of food deposits on   the surface loose. After unplug the            power plug from socket, open the door of   microwave oven and let it cooling down for a while, you can use a piece of          cloth to clean the surface. 
   
    If the food deposits still exist, please put 1/2 cup of vinegar in a glass   then put into microwave oven to heat for 2-3            minutes. Then use a piece of   cloth to clean the surface.
   
    Hard detergent, gasoline, abrasive powder or metal brush could not be used   to clean any part of the appliance, which        may break the surface of microwave oven.