The present invention relates to an installation having a plurality of conduits (3) hung by means of pairs of steel cables (4) connected to rotary shafts (5) such that the rotation of same causes some conduits (3) to ascend and others to descend, allowing same to be situated at different heights. The rotary shafts (5) from which the cables (4) of the conduits (3) hang are actuated by means of reducers (14) actuated by means of a chain-and-sprocket drive that is actuated by a main shaft (16) connected to a motor reducer (17).
