[. . . ] Do not cut off the adapter to replace it with another plug, as this causes a hazardous situation. -- 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 -- Never immerse the appliance in water or rinse it under the tap. [. . . ] Continue to use the appliance until the motor almost stops operating during a session. 8 English Using the appliance The hair length settings are indicated in millimeters, the comb cuts the hair to a length of 1mm to 23mm. Tip: Start trimming at a high length setting and reduce the length setting gradually until you have reached the desired hair length. Note:When you trim for the first time, start at the highest length setting to familiarise yourself with the appliance. 4 To trim most effectively, move the trimmer against the hair growth direction. Make sure the surface of the comb always stays in contact with the skin. English Trimming without comb Use the trimmer without the trimming comb to clip hair close to the skin (0. Be careful when you trim without comb because the cutting element removes every hair it touches. Using the beard comb (HC5440/80, HC3420/80, HC3420/17 only) The hair length settings are indicated in millimeters, the comb cuts the hair to a length of 1mm to 23mm. 10 English 2 Turn the length setting adjuster to the desired length setting. 4 To trim most effectively, move the trimmer against the hair growth direction. Make sure the surface of the comb always stays in contact with the skin. Cleaning Never use scouring pads, abrasive cleaning agents or aggressive liquids such as alcohol, petrol or acetone to clean the appliance. Note: Only the cutting element and the comb can be cleaned with water. 1 Make sure the appliance is switched off and disconnected from the mains. 3 Remove the comb and clean it with the brush or rinse it under the tap. English 5 Clean the cutting unit with the brush or rinse it under the tap. To reattach the cutting unit, insert the lug of the cutting unit into the guiding slot. 8 Insert the lug of the cutting unit into the guiding slot (1) and push the cutting unit back onto the appliance (2). Replacement Only replace a worn or damaged cutting unit with an original Philips cutting unit, available from authorised Philips service centres. [. . . ] Press down the screwdriver as far as it will go English 4 Tilt the handle of the screwdriver downwards (1) and separate the back panel from the appliance (2). Pull the bottom part of the printed circuit board with the rechargeable batteries attached from the appliance. 6 Cut the wires to separate the rechargeable batteries from the appliance. Do not connect the appliance to the mains again after you have opened it. [. . . ]