Using a wood or coal stove? Put an approved stove board under the unit to shield the floor from the heat and the hot coals, which might fall out. For the maintenance and installation of the unit, follow the manufacturers instructions.
For the cleaning of a painted fire screen, you have to mix a gallon of warm water with half a cup of vinegar and a teaspoon of ammonia. Then dipping a cloth into the solution, just wipe both the sides of the sides of the fire screen. Finally rinse with a cloth dipped in warm and clear water.