DeWalt DW089LR - Laser Accuracy Verification Procedures; Horizontal Beam Pitch Accuracy; Vertical Beam Accuracy (DW089)

16
E
Horizontal Beam - Pitch Direction
Checking the horizontal pitch calibration of the
laser requires a single wall at least 30′ (9m) long.
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.
Place the laser against the end of the wall on a
smooth, fl at, stable surface that is level in both
directions (Figure
L 1
).
2.
Move the Power/Transport Lock switch to the right
to turn the laser ON.
3.
Press to turn on the horizontal beam.
4.
At least 30′ (9m) apart along the laser beam, mark
a
and
b
.
5.
Move the laser to the opposite end of the wall
(Figure
L 2
).
6.
Position the laser toward the fi rst end of the same
wall and parallel to the adjacent wall.
7.
Adjust the height of the laser so the center of the
beam is aligned with
b
.
8.
Directly above or below
a
, mark
c
along the laser
beam (Figure
L 3
).
9.
Measure the distance between
a
and
c
.
10.
If your measurement is greater than the Allowable
Distance Between
a
and
c
for the correspond-
ing Distance Between Walls in the following table,
the laser must be serviced at an authorized service
center.
Distance
Between Walls
Allowable Distance
Between
a
and
c
30’ (9m) 1/4” (6.0mm)
40’ (12m) 5/16” (8.0mm)
50’ (15m) 13/32” (10.0mm)
Vertical Beam (DW089)
Checking the vertical (plumb) calibration of the
laser can be most accurately done when there is a
substantial amount of vertical height available, ideally
30’ (9m), with one person on the fl oor 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.
Place the laser on a smooth, fl at, stable surface
that is level in both directions (Figure
M 1
).
2.
Move the Power/Transport Lock switch to the right
to turn the laser ON.
3.
Press and to turn on both vertical beams.
4.
Mark two short lines where the beams cross
a
,
b
and also on the ceiling
c
,
d
. Always mark
the center of the beam's thickness (Figure
M 2
).
5.
Pick up and rotate the laser 180º, and position it
so the beams line up with the marked lines on the
level surface (
e
,
f
) (Figure
M 3
).
6.
Mark two short lines where the beams cross on the
ceiling
g
,
h
.
7.
Measure the distance between each set of marked
lines on the ceiling (
c
,
g
and
d
,
h
). If the mea-
surement is greater than the values shown below,
the laser must be serviced at an authorized service
center.
Ceiling Height
Allowable Distance
Between Marks
8’ (2.5m) 1/16” (1.5mm)
10’ (3m) 3/32” (2.0mm)
14’ (4m) 1/8” (2.5mm)
20’ (6m) 5/32’ (4mm)
30’ (9m) 1/4’ (6mm)