12
DEMOLITION HAMMER
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SHARPENING CHISELS
Good results are only achieved with sharp chisels; therefore,
sharpen the chiselling tools in good time. This ensures a long
service life of the tools and good working performance.
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RE-SHARPENING
Sharpen chiselling tools using grinding wheels (e.g.Ceramic
bonded corundum wheel) with a steady supply of water. Reference
values are shown in the figure. Take care that no annealing
coloration appears on the cutting edges; this impairs the hardness
of the chiselling tools.For forging, heat the chisel to between
850 and 1050 °C (bright red to yellow).
For hardening, heat the chisel to approx. 900°C and quench in
oil. Then anneal in an oven for approx. one hour at 320°C.
MAINTENANCE
- Remove the mains plug from the socket before carrying out
any work on the device.
- Keep your machine clean at all times.
- Never use caustic agents to clean the plastic parts.
- At the end of your work, to prevent dust deposits you should
use compressed air (max. 3 bar) to clean out the ventilation slots.
- Check the carbon brushes regularly (dirty or worn carbon brushes
result in excessive sparking and speed faults) and replaced by
an authorized specialist or after-sales service organization. (two
pairs of carbon brush shall be replaced at the same time).
