Zanussi ZOB 985 QP Instruction Manual page 18

Clean the oven door glass with warm water and a softh
cloth only. Never use harsh abrasives as they could
damage the special heat-resistant surface of the inner
glasses.
Once the cleaning is carried out, refit the oven door,
following the procedure in reverse.
The two glasses in the middle are special glasses
that have been treated to resist heat. They are
marked with a small dot located on a corner and a
black frame respectively.
It is important that, when refitting the oven door,
the inner glasses are fixed in the right position.
To check if this operation has been carried out
correctly, when inserting the glass, make sure that
the surface of the glass marked with a black frame
looks downwards and that the dot is located on the
upper left corner of the glass (Fig 24).
DO NOT clean the oven door while the glass
panels are warm. If this precaution is not observed
the glass panels may shatter.
If the door glass panels become chipped or have
deep scratches, the glasses will be weakened and
must be replaced to prevent the possibility of the
panel shattering. Contact your local Service Force
Centre who will be pleased to advise further.
Fig. 24
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