DeWalt DCLE34220 Instructions Manual page 19

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
30'
40'
50'
Distance
Between Walls
9.0 m
12.0 m
15.0 m
Checking Accuracy – Vertical Beam
(Fig. F)
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.
Allowable Distance
Between and
a c
1/4"
5/16"
13/32"
Allowable Distance
Between and
a c
6.2 mm
8.3 mm
10.4 mm
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.
6. Mark the position of the laser beam on the ceiling
(b), directly beside the first mark (a).
7. Measure the distance between these two marks.
• If the measurement is greater than the values shown
below, the laser must be serviced at an authorized
service center.
• Ceiling Allowable Distance Between Marks Height 8'
Distance
Between Walls
8'
10'
14'
20'
Distance
Between Walls
2.5 m
3.0 m
4.0 m
6.0 m
Allowable Distance
Between and
a b
1/16"
3/32"
1/8 "
3/16"
Allowable Distance
Between and
b
a
1.7 mm
2.1 mm
2.8 mm
4.1 mm
E
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