Smeg SC170 - Manual (Page 13)

Instructions for the user
40
4. USE OF THE OVEN
In models equipped with analogue digital timer, the user has only to
press the central key for 1/2 seconds to enable use of the oven on first
use or after a power blackout.
4.1 Warnings and general advice
Before using the oven for the first time, pre-heat it to maximum
temperature long enough to burn any manufacturing oily residues which
could give the food a bad taste.
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, place it so that it
will not interfere with the hot air circulation inside the oven.
To prevent any steam in the oven creating
problems, open the door in two stages: half open
(5 cm approx.) for 4-5 seconds and then fully
open. To access food, always leave the door
open as short a time as possible to prevent the
temperature in the oven from falling and ruining
the food.