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manual abstract
Wear goggles Wear ear defenders Wear a breathing mask 5 Contents of carton The GMC ROS400A Random Orbital Sander is supplied with the following accessories as standard: • 5 x 80 grit hook & loop sanding sheets • Dust bag • Instruction manual Unpacking Due to modern mass production techniques, it is unlikely that your GMC Power Tool is faulty or that a part is missing. If you find anything wrong, do not operate the tool until the parts have been replaced or the fault has been rectified. Failure to do so could result in serious personal injury. Assembly The Random Orbital Sander is packed, fully assembled. 6 Know your product 1. Adjustable front handle 2. Front handle lock 3. Sanding base (platen) 4. On/off trigger switch 5. Lock-on button 6. Variable speed controller 7. Washable dust bag 8. Dust extraction port 9. Rear handle 2 1 8 4 9 7 3 56 7 Switching on and off 1. Connect the plug to the power supply. 2. Squeeze the on/off trigger switch (4) to start the sander. 3. To lock the switch “on” for continuous operation, press the lock-on button (5) while the trigger is engaged. 4. To release the lock-on button, squeeze and release the trigger switch. 5. Hold the tool securely and make sure that you have full control at all times. Using the sander The sander can be used for most sanding and polishing operations on materials such as wood, plastic, steel and painted surfaces. CAUTION. Always wear safety goggles and a mask. 1. Grip the rear handle (9) in one hand and push down on the adjustable front handle (1) with the other hand. Hold the sander flat against the workpiece before switching on. 2. Switch the sander on and move it evenly over the work surface in a circular motion using only moderate pressure. 3. If marks remain in the work surface, try using a coarser grit before recommencing with the original grit choice. Alternatively try using a new disc of the same grit before going on to a finer grit and finishing the job. 4. For polishing, a lambs wool polishing bonnet (not supplied) can be purchased to fit the platen. When fitted and used with a good quality polish it can be used to polish paintwork to a high sheen. Use a low speed to prevent burning the paintwork. WARNING. Use great care when polishing and follow all polish manufacturers recommendations. Always test first on a small area which will not be seen. Ensure any sanding grit residue is completely cleaned from the sander and platen before using as a polisher. If grit is present when polishing it can scratch the work surface. The manufacturer takes no responsibility for scratches resulting from sanding grit residue. Adjusting the speed The speed can be adjusted to suit the material being sanded. To adjust the speed, move the variable speed control (6) until you are satisfied that the speed is what you need for the job in hand. Fitting a sanding sheet WARNING. Always ensure that the tool is switched off and the plug is removed from the power point before making any adjustments or maintenance procedures. 1. Before fitting sandpaper, remove any dust or debris from the hooks and loops of the base. 2. Match the holes in a suitable sheet with the holes in the sanding base (3). 3. Simply press the sheet to the base to attach it. 4. To remove the sheet, peel it away from the base. CAUTION. Take care to regularly clean out the build up of dust on the base underneath the sandpaper and not to let the sandpaper wear completely down before replacing it. Failure to observe these two precautionary measures can lead to damage to the hooks and loops on the platen and the sandpaper will not attach properly. WARNING: Never use the sander unless the entire base is 8 fitted with sandpaper or another type of pad. Dust extraction Selecting the right grade of sandpaper WARNING. Always ensure that the tool is switched off and the plug is removed from the power point before making any adjustments or maintenance procedures. • Different grades of sanding paper can be purchased from your local hardware store. Available grades are: Coarse, Medium and Fine. • Use a coarse grit to sand down rough finishes, medium grit to smooth the work and fine grit to finish off. • It is best to make a trial run on a scrap piece of material to determine the optimum grades of sandpaper for a particular job. If there are still marks on your work after sanding, try either going back to a coarser grade and sanding the marks out before recommencing with the original choice of grit, or try using a new piece of sandpaper to eliminate the unwanted marks before going on to a finer grit and finishing the job. WARNING. Do not use the same sanding sheet for wood and metal. Metal particles become embedded in the sandpaper and will scour a wooden surface. Adjusting the front handle The front handle on this sander can be adjusted to suit the needs of the operator and the job. 1. To adjust the front handle loosen the front handle lock (2) enough so that you can easily move the handle into the desired position....