[. . . ] When using any electric product, basic precaution should always be taken. [. . . ] Care should be taken so that object do not fall onto and liquids are not spilled inside the product. Connect the apparatus to a power supply only with a power cord included. L = brown N = blue GND = yellow/green Make sure that the power supply has a ground connection in working order. The power supply cord should be unplugged from the outlet when left unused for a long period of time. The installation must only be carried out by an qualified personnel taking into account all relevant safety regulations. The installation must always be secured with a secondary safety attachment (safety rope). This secondary safety attachment must be constructed in a way that no part of the installation can fall down if the main attachment fails. A safety rope which already hold the strain of a crash or which is defective must not be used again. [. . . ] A safety rope which already hold the strain of a crash or which is defective must not be used again. [. . . ]