Infrared radiation unit for drying or heat treatment of paper or board lengths features compact and simple mechanical switch

摘要

The switch (80) features a tube element (86), which accommodates a shifting rod element (84) of the operating part (82). The closing section (88) of the operating part is located close to one end of the tube element. At least one pre-tensioned spring (90) is positioned between the tube element and a support section of the operating part; the spring provides for the pre-tensioning of the operating part. A holding section (94) of the operating part is supported on the tube element directly or indirectly to keep the operating part in a stand-by position. An Independent claim is made for the mechanical switch of the infrared radiation unit.