DeWalt DW0822 - Vertical Beam Accuracy

ENGLISH
13
4. Reposition the laser to the opposite end of thewall.
5. Turn on the laser's horizontal beam and pivot the laser back toward the first end of the
wall and approximately parallel to the adjacentwall.
6. Adjust the height of the laser so that the center of the beam is aligned with the nearest
mark (b).
7. Mark the center of the beam (c) directly above or below the farthest mark (a).
8. Measure the distance between these two marks(a,c).
• If the measurement is greater than the values shown below, the laser must be serviced at
an authorized servicecenter.
Distance
Between Walls
Allowable Distance
Between
a
and
b
30' 1/4"
40' 5/16"
50' 13/32"
Distance
Between Walls
Allowable Distance
Between
a
and
b
9.0 m 6.2 mm
12.0 m 8.3 mm
15.0 m 10.4 mm
Checking Accuracy – Vertical Beam (Fig. G)
Checking the vertical (plumb) calibration of the laser can be most accurately done when
there is a substantial amount of vertical height available, ideally 20' (6m), with one person
on the floor positioning the laser and another person near a ceiling to mark the position of
the beam. It is important to conduct a calibration check using a distance no shorter than the
distance of the applications for which the tool will beused.
1. Start by marking a 5' (1.5 m) line on thefloor.
2. Turn on the laser's vertical beam and position the unit at one end of the line, facing
theline.
3. Adjust the unit so its beam is aligned and centered on the line on thefloor.
4. Mark the position of the laser beam on the ceiling (a). Mark the center of the laser beam
directly over the midpoint of the line on thefloor.
5. Reposition the laser at the other end of the line on the floor. Adjust the unit once again
so its beam is aligned and centered on the line on thefloor.