Whirlpool MT6900XW Use And Care Manual page 31

General information
If your electric power line or outlet voltage is less
than the normal 120 volts, cooking times may be
longer.
To test a
dlsh
for safe use,
put it into the oven
with a cup of water
beslde It.
Cook on 100%
Cook Power for one minute.
If the dlsh gets hot
and water stays cool, do not use lt.
Some
dishes (melamine, Centura" etc.) absorb micro-
wave energy, becoming too hot to handle and
slowing cooking times.
Product Damage Hazard
Remove wlre twlst-tles from paper or
plastic bags before placlng bag In oven.
Cooklng In metal containers not deslgned
for mkxowave uee can damage the oven,
as can containers wlth hidden metal (twlst-
tles, foll Ilnlng, staples, metallic glaze
or Mm).