11MaintenanceSHARPENING VERSIONS WITH BUILT-IN SHARPENERTo sharpen the blade periodically as soon as the cutting capacity decreases. Please proceed as per thefollowing instructions:1. After disconnecting form the mains, clean the blade accurately using denaturized alcohol to degrease it;2. Loosen the knob (1) and turn the sharpener (2) by 180° and insert the wheels on the slicer blade. Re lockthe knob (1);3. Operate the switch (3) and press the button (4);4. Allow the blade to rotate for about 30 to 40 seconds then use the switch (3) to stop it. Brush a pencil lightlyon the external side of the blade to check for a slight spud;We advise performing this operation with the utmost care as the blade is extremely sharp.5. If some spud is found, operate the switch (3) again for 3 to 4 seconds by pressing the buttons 4 and 5 atthe same time;DO NOT PROLONG THIS OPERATION BEYOND THE FEW SECONDS MENTIONED OTHERWISE THEBLADE EDGE WILL WARP.6. After completing sharpening, we advise cleaning the wheels using a small brush and alcohol;7. Now return the sharpener to its original position.