If you do not use your stove for a longer period of time - as is usually the case during the summer months, for example - close the air slides of your appliance as a precautionary measure to prevent the possible formation of rust due to condensation.
Oven paint is designed for mechanical hardness and colour retention at high temperatures, but is neither water-repellent nor particularly protective against corrosion. Therefore, please clean painted surfaces only dry and avoid moisture in the firing chamber. This can get into the appliance through too timid a start-up, through firewood with too much residual moisture or, in the case of an outside air connection, through condensing outside air. In rare cases, moisture can also get into the stove through the chimney. Always take enough kindling and kindling wood, use only firewood with a residual moisture content of less than 20% and close the air slides of your appliance when it is not in use.