Accuracy Check - Milwaukee L4 CLL Manual Original

ACCURACY CHECK

This cross laser left the factory fully calibrated. Milwaukee recommends the user to check the
accuracy of the laser periodically, especially if the unit falls or is mishandled.
If the maximum deviation of the laser is exceeded in one of the accuracy checks,please
contact one of our Milwaukee service agents (see our list of guarantee/service addresses).
1. Checking the height accuracy of the horizontal beam.
2. Checking the leveling accuracy of the horizontal beam.
3. Checking the leveling accuracy of the vertical beam.
4. Checking the plumb accuracy.
Before checking the laser accuracy, after mounting the laser on the tripod, check the leveling
of the tripod.
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CHECKING THE HEIGHT ACCURACY OF THE HORIZONTAL
BEAM (UP AND DOWN DEVIATION)
1. Set up the laser on a tripod or on a fl at surface
between two walls A and B, approximately 5 meters apart.
2. Position the laser level approximately 0.5 meter from wall A.
3. Switch ON the self-leveling mode and press the button to project the horizontal and the
vertical cross beams towards wall A.
4. Mark the center of the cross beams on the wall as a1.
A
a1
ENGLISH
5. Turn the laser 180° towards wall B and mark the center of the cross beams as b1 on the
wall.
a1
6. Move the laser level towards wall B and position it approximately 0.5 meter from wall B.
7. Mark on wall B the center of the cross beams as b2.
A
a1
8. Turn the laser 180° towards wall A, and mark on the wall the center of the cross beams
as a2.
A
B
a2 2 2 2 2
a1 a1
9. Measure the distances:
Δa= |a2-a1|
Δb= |b1-b2|
10. The diff erence | Δa – Δb| should be no more than 2 mm.
180°
b1
B
b2
b1
B
180°
b2
b1
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