[. . . ] The appliance must be installed by a qualified person in compliance with the instructions provided. [. . . ] HOW TO REMOVE IT: position the charcoal filter inside the hood and fit the 2 filter clips (M) Filtering version The hood purifies the air and recycles the clean air back into the room. Speed display PU1: ON/OFF Lights PU2: ON/OFF Motor 1st speed PU3: ON/OFF Motor 2nd speed PU4: ON/OFF Motor 3rd speed PU5: ON/OFF Motor 4th speed 5' timer function: Pressing PU2, PU3 or PU4 for two seconds when the motor is set to the corresponding speed, the 5' timer function is activated. If you change the speed while the timer is running, the function is NOT deactivated. NOTE ­ the 5' timer function can be activated for the normal speeds only (1st, 2nd, 3rd) Buzzer: Each time the key is pressed, a beep is sounded. filter alarm: After 30 hours of motor operation , the grease filter alarm is activated (all the LEDs come on). The alarm is activated when the motor is off and remains displayed for 30". [. . . ] If the hood has turned off during normal functioning: Check that: - The power has not been disconnected. [. . . ]