Trumpf LASERCELL 1005, Operator'S Manual

Page: 561 / 645

B337EN06.doc
Machine maintenance
6-45
Note
Reference screws (marked) on the beam deflection mirrors may not
be adjusted.
Cleaning the copper beam
bending mirror
Coated and uncoated copper mirrors are cleaned in the same way.
If the mirror surface is damaged, e.g. by deep scratches or
scorched areas, the mirror must be replaced. Dirty or scratched
optics result in loss of performance.
1. Blow the mirror clean using oil-free compressed air or nitrogen.
2.
Moisten lens cleaning paper with acetone and draw it across
the mirror surface. Repeat several times, using a new sheet of
lens cleaning paper each time.
3. If the mirror cannot be cleaned with acetone and lens cleaning
paper: clean mirror surface with Topol 2.
Cleaning beam bending
mirror with
Topol 2
Only cotton pads may be used for cleaning. Viscose cleaning
pads or cloths may not be used as they will scratch the copper
surfaces.
1. Moisten a pad of surgical cotton with plenty of Topol 2.
2.
Carefully clean the mirror surface with the moistened cotton,
applying light pressure. Regularly change the piece of cotton
you use, since the loosened dirt particles can scratch the
surface of the mirror.
3. Let the Topol residue dry completely. The mirrors must not be
rubbed dry with the cotton. The Topol should not be left on the
copper mirror for long periods of time.
4. Carefully wipe off the dried Topol residue with cotton.
5.
Then, clean the mirror surface with acetone and lens cleaning
paper; the alumina residue must be completely removed.
Cleaning coated mirrors in
the laser welding head
The molybdenum-coated deflection mirrors in the welding optics
generally have a high degree of contamination. Wenol is used for
cleaning here instead of Topol 2. Neither solvents nor water can be
allowed onto the coating!
1. Blow the mirror clean using oil-free compressed air or nitrogen.
2.
Clean the mirror surface with surgical cotton and Wenol,
applying light pressure.
3. Completely remove any residual Wenol with acetone.