Using The Oven - Bosch HB933R500 Gebrauchsanweisung

Instructions for the user

6. USING THE OVEN

Before operating the oven, make sure the timer is on
cooking". (See paragraph 3.3.2.)
6.1 Warnings and general advice
Before using the oven for the first time, pre-heat it to maximum
temperature (250°C) for long enough to burn off any oily residues left by
the manufacturing process, which might contaminate foods with
unpleasant odours.
During cooking, do not cover the bottom of the oven with aluminium or tin
foil and do not place pans or oven trays on it as this may damage the
enamel coating. If you wish to use greaseproof paper, position it so that it
does not interfere with the hot air circulation inside the oven.
To prevent any steam in the oven from causing
problems, open the door in two stages: keep it
half open (5 cm approx.) for 4-5 seconds and then
fully open. If you need to access the food, always
leave the door open for as short a time as
possible to prevent the temperature in the oven
from falling and ruining the food.
"Manual
41