Hafele Nagold 538.01.051 User Manual page 4

If the supply cord is damaged, it must be replaced
by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
Do not use harsh abrasive cleaners or sharp metal
scrapers to clean the oven door glass since they
can scratch the surface, which may result in
shattering of the glass.
A steam cleaner is not to be used.
The appliances are not intended to be operated by
means of an external timer or separate remote-
control system.
The instructions for ovens that have shelves shall
include details indicating the correct installations of
the shelves.