[. . . ] This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance. Caution Charge, use and store the appliance at a temperature between 5°C and 35°C. Do not immerse the appliance in water or any other liquid, nor rinse it under the tap. [. . . ] , Travel lock indicator if the appliance is locked (see section `Travel lock' in this chapter). Beard trimming Always comb your beard or moustache with a fine comb before you start trimming. Trimming with trimming comb The hair length settings are indicated in millimetres on the display of the appliance. If you trim for the first time, start with the maximum hair length setting (18mm). Note: During trimming, you can use the turbo function for extra suction power and trimming speed (see section `Turbo function' below). 4 To trim most effectively, move the appliance against the direction of hair growth (Fig. Note: Make smooth and gentle movements and make sure the surface of the trimming comb always stays in contact with the skin. 5 Switch off the appliance after use and clean it (see chapter `Cleaning'). Creating a stubble look Use the trimmer with the trimming comb set to a hair length of 1mm to create a stubble look (Fig. Trimming without trimming comb Use the trimmer without trimming comb to trim full beards and single hairs. 2 Make well-controlled movements and touch the hair lightly with the cutting unit. Shaping with the precision trimmer (QT4090 only) You can use the precision trimmer to shape your moustache and sideburns, to define contours and to cut single hairs. 4 When you use the precision trimmer, hold the appliance in such a way that the trimmer points upwards and make downward strokes (Fig. Turbo function You can use the turbo function for greater suction power and increased cutting speed. When you switch off the appliance, the turbo function is deactivated automatically. Absorbing cut hairs The vacuum system is activated automatically as soon as you switch on the appliance. We advise you to empty the hair-collection chamber after each trimming session. When you trim long, dense beards, it may also be necessary to empty the hair-collection chamber during the trimming session in order to maintain optimal suction performance (see chapter `Cleaning', section `Hair-collection chamber'). Note:To ensure optimal functioning of the vacuum system, do not cut off more than approx. If you want to cut your beard shorter, repeat the process one or more times. The travel lock prevents the appliance from being switched on by accident. Activating the travel lock 1 Press and hold the on/off button for at least 6 seconds. [. . . ] The staff of this centre will remove the battery for you and will dispose of it in an environmentally safe way. 23) Removing the rechargeable battery Do not connect the appliance to the mains again after you have opened it. 1 Disconnect the appliance from the mains and let the appliance run until the motor stops. 3 Remove the 4 screws inside the hair chamber with a screwdriver (Fig. [. . . ]