Installation, maintenance, and operation indication Installation, operation and maintenance of equipment must be carried out in accordance with manufacturer's instructions and applicable standards. The device, in particular all wires, protective wires and fuses, shall be inspected and checked periodically. Any defects and anomalies found must be removed in a timely and professional manner. Any repair, cleaning or other operations within the equipment must be carried out during the operation of the equipment. It's all turned off. Access to equipment maintenance must always be free of any obstacles, especially next to the EL.box. Placement and installation of devices The device must be placed in a fully dry place from a construction point of view. In case of heat loss, the device should be placed in a cool and well ventilated place. The fourth device shall not be located near any source of radiation. Equipment check before it is put into operation External wire connection check Check to protect wire connection Visual inspection of equipment status (damage or impurities during transportation) Inspection of status of delivery documents (user manual, product quality and integrity certification, EC declaration)The device must not be turned on until it is checked!