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90º Accuracy Between Vertical Beams
(DW089)
Checking 90º accuracy requires an open fl oor area at
least 33' x 18' (10m x 5m). Refer to Figure
position of the laser at each step and for the location of
the marks made at each step. Always mark the center
of the beam's thickness.
Place the laser on a smooth, fl at, stable surface
1.
that is level in both directions.
Move the Power/Transport Lock switch to the right
2.
to turn the laser ON.
Press
to turn on the side vertical beam.
3.
Mark the center of the beam at three locations
4.
(
,
,
) on the fl oor along the side laser line.
a
b
c
Mark
should be at the midpoint of the laser line
b
(Figure
).
N 1
Pick up and move the laser to
.
5.
b
Press
to turn on the front vertical beam too
6.
(Figure
).
N 2
Position the front vertical beam so it crosses
7.
precisely at
, with the side beam aligned with
b
(Figure
).
N 2
Mark a location
along the front vertical beam at
8.
e
least 14' (4m) away from the unit (Figure
Rotate the laser 90º so the side vertical beam now
9.
passes through
and
(Figure
e
b
Directly above or below
, mark
10.
a
vertical beam.
Measure the distance between
11.
measurement is greater than the values shown
below, the laser must be serviced at an authorized
service center.
for the
N
Distance from
a
to
b
14' (4m)
17' (5m)
20' (6m)
23' (7m)
Using the Laser
Leveling the Laser
As long as the laser is properly calibrated, the laser is
self-leveling. Each laser is calibrated at the factory to
fi nd level as long as it is positioned on a fl at surface
within average ± 4° of level. No manual adjustments
are required.
If the laser has been tilted so much that it cannot
self-level (> 4°), the laser beam will fl ash. There are
two fl ashing sequences associated with the out of level
condition.
c
• Between 4° and 10° the beams fl ash with a constant
blink cycle
).
N 2
• At angles greater than 10° the beams fl ash with a
three blink cycle.
).
N 3
When the beams fl ash THE LASER IS NOT LEVEL
along the front
f
(OR PLUMB) AND SHOULD NOT BE USED FOR
DETERMINING OR MARKING LEVEL OR PLUMB.
Try repositioning the laser on a more level surface.
and
. If the
a
f
E
Allowable Distance
a
Between
and
f
5/32" (3.5mm)
3/16" (4.5mm)
7/32" (5.5mm)
1/4" (6mm)
17
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