Panasonic NN-E221 MM Operating Instructions Manual page 7

 Clean the inside of the oven, door seals and
door seal areas regularly. When food splatters
or spilled liquids adhere to the oven walls,
door seals and door seal areas wipe off with
a damp cloth. Mild detergent may be used if
they get very dirty. The use of harsh detergent
or abrasive is not recommended.
 DO NOT USE COMMERCIAL OVEN
CLEANERS.
 Failure to maintain the oven in a clean
condition could lead to deterioration of
surfaces that could affect the life of the
appliance and possibly result in a hazardous
situation.
 A steam cleaner is not to be used for
cleaning.
En- 5