[. . . ] Also follow carefully each step of the assembly instructions, and once installation has been completed, make sure that the hood is firmly secured in place. To facilitate installation, before starting remove the grease filters: press inward on the clamp at the handle and pull the filter downward (Fig. For installation reasons the pipe must absolutely be flexible) inside the telescopic flue so that they are sufficiently long to reach the lower flue outlet (Fig. [. . . ] For installation reasons the pipe must absolutely be flexible) inside the telescopic flue so that they are sufficiently long to reach the lower flue outlet (Fig. ­ If your unit is installed in a ducting hood or in a hood with outside motor, prepare the air exhaust hole. When installing ducting hoods and hoods with external motor, to achieve the best possible conditions use an air exhaust pipe that : is as short as possible, has a minimum of curves (maximum angle: 90°), is made of a material that complies with the standards (which vary from nation to nation) and is smooth on the inside. It is also advisable to avoid any drastic changes in pipe section (diameter: 150 mm). ASSEMBLING - Using the special drilling template, drill the holes for fixing to the ceiling on the vertical side of your hob. carefully observe all the indications for final positioning of the apparatus. Take into account that one of the template axes must correspond to the axis of the hood controls. Fix the bracket to the ceiling using the screws and screw anchors provided (Fig. 18: Button A: turns the lights on/off; every 30 hours of operation the corresponding pilot lamp (S) comes on to indicate that the grease filters must be cleaned; every 120 hours of operation the corresponding pilot lamp (S) flashes to indicate that the grease filters must be cleaned and the charcoal filter replaced. To restart the hour counter (RESET), hold the button A pressed down for about 1" (while the pilot lamp S is on). Button B: drives the motor in first speed (the corresponding pilot lamp comes on); when holding it down for about 1", the motor cuts out. Lamp comes on); when pressing the button a second time (while the pilot lamp is on), the TIMER is activated and thus the motor stops after 5' (the pilot lamp flashes). Button D: drives the motor in third speed (the corresponding pilot lamp comes on); when pressing the button a second time (while the pilot lamp is on) , the TIMER is activated and thus the motor stops after 5' (the pilot lamp flashes). Button E: drives the motor in fourth speed (the corresponding pilot lamp comes on); when pressing the button a second time (while the pilot lamp is on) , the TIMER is activated and thus the motor stops after 5' (the pilot lamp flashes). Pay special attention to the grease filters: if the model purchased has the commands shown in Figure 17: the grease filters must be cleaned approximately once every 30 hours of operation. to remove the filters: press inward on the clamps at the handles and pull the filter downward. [. . . ] Pay special attention to the grease filters: if the model purchased has the commands shown in Figure 17: the grease filters must be cleaned approximately once every 30 hours of operation. to remove the filters: press inward on the clamps at the handles and pull the filter downward. If the model purchased has the commands shown in Figure 18: the grease filters must be cleaned approximately once every 30 hours of operation (when the light button lamp comes on) (Fig. [. . . ]