I had to be transported to the cellar my SHT TDA 15 pellet / firewood burner. The naked weighs about 640 kg. The winch was used as restore so that the burner can not runterpurzeln the stairs. From the front, we have drawn with an identical winds that was set at 300 kg. Clamped between two winds, we were able to deal with the burner itself, as we him the spiral staircase runterkriegen.Die whole operation lasted 4 hours and the winds have thereby reliably served its purpose.