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15

E

900W

The heating category (a letter A to E) developed
by MAFF (Ministry of Agriculture, Fisheries and
Food) with microwave oven and food
manufacturers shows the ability of the oven to heat
small quantities of food (up to 500g [1lb 2oz]). It
does not represent the general performance of the
oven.

Food packs carry cooking instructions for heating
categories A to E.  Follow instructions for the letter
corresponding to the oven’s heating category.
The higher the output power and heating category
of the oven, the less heating time is required, as
shown opposite.

Microwave output power in
watts (based on international
(IEC 705) standard.

600  700  800  900  1000 Watts

OVEN 
OUTPUT 
POWER

Less heating time required

More heating time required

Letter representing the oven
heating category.

Microwave 
Symbol.

A       B       C      D       E

OVEN 
OUTPUT 
CATEGORY

Less heating time required

More heating time required

WARNING -
Always attend the oven when in use. Carefully follow the SHARP Operation Manual at all times.  If
you exceed recommended cooking times and/or use power levels that are too high, food may
overheat, burn, and in extreme circumstances, catch fire and damage the oven.  The microwave
power level will default to 100P (HIGH) unless you press the MICROWAVE POWER LEVEL key to
the desired setting.  Take care when heating foods with high sugar or fat content, for example,
Christmas pudding, mince pies and fruit cakes. 
Before use, the user should check that utensils are suitable for use in microwave ovens.
Lids: Always remove lids from food jars and containers before you use them in the oven. If you do
not, steam and pressure will build up inside and the container may explode.
Liquids and other foods must not be heated in sealed containers since they are liable to explode.
Do not place hot foods/utensils on a cold turntable, or cold foods/utensils on a hot turntable.

A variety of cookware can be used for microwaving. Round/oval dishes rather than square/oblong ones are
recommended, as food in corners tends to overcook.

16

Microwave cling film and bags must be
vented for steam to escape, pierce in 4-5 
places. Do not use plastic or metal ties 
as they may melt or catch fire due to 
electrical ‘arcing’.

* Dishes with metallic decoration must 
not be used.

When heating food in plastic or paper
containers, keep an eye on the oven
due to possiblity of ignition.

When heating food in plastic or paper
containers, keep an eye on the oven
due to possiblity of ignition.

The metal racks supplied have been 
specifically designed for all cooking 
modes, their use will not cause arcing

or damage to the oven.

Heat resistant glass, 
(e.g. Pyrex®, 
Fire King®, 
Corning Ware ®).

Microwave-safe 
plastic cookware.

Microwave cling film,
microwave roasting
bags.

Heat resistant china 
and ceramics.

Disposable containers:
Thin plastic, paper, 
straw and wooden 
containers.

Kitchen paper.

Metal Racks.

17

For even cooking stir, turn or rearrange food during
cooking.  Where recommended, leave food to stand
after cooking or defrosting.

The initial temperature of food affects the amount of
cooking time needed, eg. chilled food requires
more cooking than food at room temperature. 

Check the temperature of food and drink and stir
(Before serving). Take special care when serving
babies, children or the elderly.  The contents of
feeding bottles and baby food jars should be stirred
or shaken and the temperature checked before
consumption in order to avoid burns. 

The temperature of the container is not a true
indication of the temperature of the food or drink. Cut
into foods with fillings, for example, jam doughnuts,
to release heat or steam. 

Face & Hands: Always use oven gloves to remove food or cookware from the oven. Stand back
when opening the oven door to allow heat or steam to disperse. When removing covers (such as
cling film), opening roasting bags or popcorn packaging, direct steam away from face and hands.

YES
Always place on an up-turned plate on the
turntable to prevent heat stress. Follow
manufacturers' instructions. Be careful as
these become very hot. Popcorn: Only
use microwave popcorn within
recommended packaging (follow popcorn
manufacturer's instructions). Never use oil
unless the manufacturer recommends and
never cook for longer than instructed.
NO

YES/NO
Use small pieces of aluminium foil to shield
food from overheating. Keep foil at least
2cm from the oven walls. Foil containers
are not recommended unless specified by
the manufacturer, eg. MicroFoil ®, follow
instructions carefully.

Browning dishes
& self-heating 
packages.

Metal cookware.

Aluminium
foil & foil 
containers, made 
from
"Micro Foil®".

Metal trays 
may be used

See method
recommended
for cooking
& defrosting

18

Food high in fat or sugar (Christmas cake, mince pies)
requires less heating time and should be watched,
over-heating can lead to fire.
Good quality ingredients should be used for
microwaving. Economical cuts of meat are
recommended for casseroles. 

Food with skin (such as potatoes, apples, fish,
chicken), or with membrane (such as the white and
yolk of eggs), must be pierced in several places. If
not, steam will build up and may cause food to
explode.
Note: Eggs in their shell and whole hard boiled
eggs should not be heated in microwave ovens since
they may explode even after heating has ended.
Canned potatoes should not be heated in the
microwave oven as they may burst.

Place thickest parts of food on the outside of the dish,
for example, the meaty ends of chicken drumsticks
should be placed on the outside of the dish.

Fish, vegetables and certain other foods benefit from
being covered during microwave cookery, follow
recommendations where given and use vented
microwave cling film or a suitable lid.   

Food size and shape affect the amount of cooking time
required. When cooking more than one portion of the
same food ensure they are of a similar size and shape.

Food density and quantity affect the amount of
cooking time needed, for example, potatoes require
more cooking than peas; four potatoes will take
longer to cook than two.