Metabo MLL 3-20 Mode D'emploi page 12

en
Horizontal check
Checking the level of the horizontal laser line
2 parallel walls at a distance S of at least 5 m apart are needed to carry
out the horizontal check.
1. Position the MLL 3-20 as close as possible in front of wall A on a horizontal
surface.
2. The MLL 3-20 is aligned with wall A using an exit aperture for the
vertical laser line.
3. Switch on the laser unit ( sliding switch (15) ).
4. Once automatic levelling has ended, mark the laser line cross projected
onto wall A. Marking 1.
5. Turn the MLL 3-20 by 180° and align with wall B using the same exit
aperture for the vertical laser line. The height adjustment must not
be changed.
6. Once automatic levelling has ended, mark the laser line cross projected
onto wall B. Marking 2.
7. Now reposition the laser unit so that it is directly in front of wall B. The
MLL 3-20 is aligned with wall B using the same exit aperture for the
vertical laser line.
8. Move the laser line cross by turning and adjusting the height until it
precisely coincides with point 2.
9. Turn the MLL 3-20 by 180° and align with wall Am using the same exit
aperture for the vertical laser line. The height adjustment must not
be changed.
10. Move the laser line cross by turning until it precisely coincides
with point 1.
11. Once automatic levelling has ended, mark the laser line cross
projected onto wall A. Marking 3.
12. Measure the vertical distance between points 1 and 3.
Perform this check for both vertical laser lines!
Clearance S to the wall:
05 m
10 m
15 m
12
maximum permissible clearance:
3.0 mm
6.0 mm
9.0 mm
Fig. (C3)
I.
II.