Before using for the first time, the protective coating of the heating elements must be burnt in. To do this, heat the mini oven for 15 minutes on the ‘Top/bottom heat with convection’ setting at maximum temperature. The slight smoke and odour that develops for a short time is harmless and harmless. It is best to ensure that the room is well ventilated during this time. After cooling down, clean the oven cavity with a damp cloth and your mini oven is ready for many years of use.