The safety requirements of bonded abrasive products are determined by the EN 12413, of the flap disc by EN 13743. Granit is the member of oSa (Organization for the Safety of Abrasives).
Look for the oSa logo on the products!
→ TO ENSURE THE SAFE USE OF ABRASIVES IT IS ESSENTIAL THAT BOTH THE MANUFACTURER AND THE USER OF THE GRINDING TOOLS STRICTLY FOLLOW THE
• The inappropriate use of abrasives could be very dangerous. Always follow the safety rules for abrasives and the instructions in the machine’s user manual!
• Grinding wheels are fragile, please transport, store and handle them with care. They should always be stored in a frost free, dry place in its original packaging, on shelves or racks.
• Always use the oldest manufactured product fi rst! (follow rules of FIFO)
• Always inspect carefully the products for possible damage, cracks before mounting! Vitrified wheels exceeding the 80mm in diameter can be subjected to a sound (ring) test.
• Never use broken, damaged wheels or wheels from unknown source. Ensure that you always read all user instructions and strictly adhere to the guidance provided!
• MAKE SURE THAT THE OPERATING SPEED OF THE MACHINE DOES NOT EXCEED THE ALLOWED MAXIMUM OPERATING SPEED LISTED ON THE WHEEL!
• If something is not clear about the safety requirements of the tool, do not hesitate to contact the manufacturer!
Mounting of Abrasives
• Carefully inspect the wheel guard and mounting devices, they must conform to the relevant rules, must be in good mechanical condition and free of foreign bodies!
• The clamping fl anges and mounting devices must conform to the machine manual, EN 13218, ISO 666 and “Fepa Safety Code”!
• The blotters should conform to EN 12413!
• Mounting, balancing and dressing of abrasives must be performed only according to the rules listed in the machine manual.
• Only qualifi ed and trained persons should handle these products and operate these machines!
• After mounting, start the machine and let it run idle for at least 30 seconds. Make sure all personnel are at a safe distance from the machine
• Operating speed and RPM must never exceed the maximum operating speed or RPM printed on the wheel label or on the grinding wheel itself!
• When using cooling detergent, always stop the detergent fi rst and the wheel after to prevent an unbalance problem upon restarting the machine.
• After mounting the wheel on a hand held machine, rotate the wheel fi rst to make sure that the wheel is running freely. Turn on the machine only after close review and checking that everything is aligned per the instructions!
• Always make sure you do not put others or yourself in danger when proceeding with trial run!
• Hand held machines should be held with two hands!
• Never force the wheel when using it on a hand held machine! The weight of the machine is suffi cient.
• When using a hand held machine keep in mind the sparks! Make sure that the sparks do not land on you or others in the vicinity.
• NEVER USE CUTTING DISCS FOR GRINDING!
• Always stop using grinding disc or depressed centre cutting discs before you reach the depressed section around the bore!
• Take care to only grind in location which has good ventilation or use an exhaust system to vent out any residue!
• Never cut or grind when there are fl ammable or combustible materials around or in the vicinity of any explosive materials.
• Resinoid bonded tools can be used within three years from the production date!
• ALWAYS USE THE APPROPRIATE SAFTEY GEAR TO ENSURE YOU ARE PROPERLY PROTECTED!
Advice for the use of cutting and grinding discs:
→ Make sure that the work piece is fi xed properly!
→ When choosing the direction of mounting, select the side of the work piece with the smallest cross section!
→ When the work piece is larger or longer, fi x it without any strain to assure the cut particular can fall freely without fastening or hitting the wheel itself.
→ When starting to work with a new disc, use a bit higher force at the beginning.
→ Always touch the work piece carefully with the disc!
→ When the wheel started the cut you can increase the pressure.
→ Do not apply too much pressure, let the disc do the cutting.
→ When you feel the disc vibrating reduce the pressure.
→ When the vibration is too much, stop the machine and look for the source of the failure. Start to cut only after fi xing the problem.
→ Do not use the cutting disc for side grinding!
→ Always hold the centre of the wheel over the work spot to be able to keep the control through the cut!