Signature STI2B/2 Manuel D'utilisation page 56

Do not put any detergents or flammable materials in the equipment installed
under the ceramic cooker hob.
Because the hob can generate very high temperature, please use a pot
resistant to a temperature of over 200.
After being used the corresponding heating zone of the ceramic cooker is
still hot. Never touch the ceramic cooker surface to avoid burn.
If the supply is damaged, it must be replaced by the manufacture ,its service
agent or similarly qualified persons in order to avoid a hazard.
EN-21