User manual RYOBI HT20VSK

[. . . ] An undersized cord will cause a drop in line voltage resulting in loss of power and overheating INSPECT EXTENSION CORDS PERIODICALLY and replace them if damaged. When the tool is used outdoors, use only earthed extension cords that are approved for outdoor use and marked as such. Do not wear loose clothing, gloves, ties, rings, bracelets or other jewellery. They can get caught in the tool and draw you into the moving parts, possibly resulting in serious injury. [. . . ] If you have long hair, tie it back and wear protective hair covering to keep it from being drawn into the ventilation slots. Ordinary glasses have only impact-resistant lenses; they are NOT safety glasses. During extended periods of operation, wear proper hearing protection to dampen the sound pressure level . Do not use your tool while standing on a ladder or any other unstable support. Always secure your tool and remain aware of what is underneath you when working in elevated positions. For optimum safety and best results, keep your tool sharp and clean at all times. When not in use, during maintenance operations or when changing attachments (blades, bits, cutters, etc. Make sure the switch is in the "off" position or locked when you plug in your tool. If a tool part or accessory is damaged, check that it can continue to work and perform its function correctly before continuing to use the tool. Check the alignment of the moving parts and make sure they move freely. SANDPAPER The sander uses sheets of sandpaper that can be conveniently cut from large-size commercially available standard sheets (227 x 93 mm). Aluminium oxide, silicon carbide, or other synthetic abrasives are recommended for power sanding. To turn the tool "OFF", release the trigger switch which is spring-loaded and will return to the "OFF" position automatically. Wait till the sander has reached its full speed before placing it in contact with the workpiece. Release the clamp grip then insert the sandpaper with the grit side facing out, as shown in fig. After inserting and stretching the sheet, lift up the clamp lever making sure the teeth of the clamp grip the paper correctly. Wrap the sheet around the length of the pad and attach the free end of sheet under the clamp on the opposite side and repeat the procedure stated above. For efficient sanding, the sandpaper must be drawn as tightly as possible, as a loose sheet can slip on the work surface. 4 USING THE PUNCHER If the sheet of sandpaper has not been punched, you can use the puncher supplied with the tool to punch dust collection holes in the sandpaper. Align the sanding pad with the puncher and push down on the sander until the puncher pierces the sandpaper. [. . . ] Excessive pressure may result in uneven sanding and cause overheating which could damage the motor. CARBON BRUSHES The tool's brushes and commutator must be checked regularly (once every few months) at an Authorised Ryobi Service Centre. Good contact between the brushes and commutator is required for the tool to operate properly. The carbon brushes must be replaced when an abnormally big spark is produced around the commutator. [. . . ]