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Installation, Operation and Care of
MODEL HM1200 MICROWAVE OVEN
SAVE THESE INSTRUCTIONS
GENERAL
Microwave heat is generated inside the food rather than being conducted through the food as in
conventional methods. Time is used to control the amount of heating that occurs.
Microwave energy is absorbed in proportion to the moisture content of the food. The microwave energy
causes water molecules to vibrate at high speeds, resulting in friction (HEAT).
The Model HM1200 produces microwave energy in a magnetron where an electric current is changed
to microwave energy by large magnets. From the magnetron, microwave energy is transmitted to the
oven cavity where it is reflected, transmitted or absorbed.
Microwaves are reflected by metal (on interior walls and the rotating waveguide located underneath the
ceramic tray). This assures that the microwaves are well distributed within the oven cavity and
produces even heating or cooking of foods.
Microwaves pass through paper, glass and plastic much like sunlight shining through a window.
Because these substances do not absorb or reflect the microwave energy, they make ideal food
containers for microwave cooking.
Microwaves penetrate the food to a depth of about
3
/4 to 1
1
/2 inches where they excite molecules –
especially water, fat and sugar. The excited molecules vibrate at a rate of 2.45 billion cycles per second
which causes friction and produces heat. The internal heating of larger food volumes is done by
conduction. The microwave heat produced in the outer 1
1
/2 inches is conducted to the center of the
food. Food continues to heat by conduction after microwave production has stopped. Microwaves
dissipate and cannot be stored in food.
RADIO INTERFERENCE
There is a possibility of a small amount of interference with weak broadcast signals if the microwave
oven is too close to a radio or TV or similar equipment. If interference is present, it may be reduced
by: 1) Cleaning the door and sealing surface of the oven, 2) Increasing the separation of the oven from
the receiving device or 3) Using an antenna to obtain stronger signal reception for the receiving device.
INSTALLATION
UNPACKING
Immediately after unpacking the microwave oven, check it for possible shipping damage. If this oven
is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Before installing the oven, test the electrical service to make sure it agrees with the specifications on
the data plate on the right side of the oven.