Appendix
When measuring on curved surfaces the curvature radius should not go
above 0.3mm in both concave and convex angles. Always use
supporting rings on non-flat surfaces.
Figure A.1: Measuring on curved surfaces
Control your impact device on a reference test block at least every 500
impacts to check its condition.
Always make sure that the unit has been correctly configured for
material, impact device type and impact device angle.
Do not use lubricants or grease in the mechanical parts of your impact
device. The impact device is cleaned using the brush included with the
unit.