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ENGLISH
14
• The direction of the scan zone can be controlled with the
arrow buttons
6
and
7
.
Slope Mode Button
• To activate Slope Mode press the slope modebutton
2
.
• To return to self‑leveling mode and re‑engage full
self‑leveling, press and hold the mode button
2
again.
Setting the Slope Direction
When Slope Mode is activated, the unit automatically engages
the X‑ Axis. This allows you to slope the laser in the direction
of the X‑Axis, as indicated by the “gunsights” (
48
, Fig. E) on
therollcage.
The LED light
24
or
25
indicates the current slope direction.
DW079LR/LG only: In certain situations, it may be desirable to
slope the laser in the Y‑axis. The direction of Slope Mode can be
changed back and forth between the Y‑axis and the X‑axis by
pressing the X‑Y axis button
5
. The selected axis is identified by
LED light
24
or
25
.
Setting the Amount of Slope
1. Turn on SlopeMode.
2. Select the desiredaxis.
3. Use the Arrow buttons (Fig. B,
6
and
7
) to tilt the laser
rotor head up anddown.
‑ Each quick press of an Arrow button will move the
slope by 0.01º (1/16" @ 30ft. or 1.6mm @10m).
‑ If you press and hold an Arrow button between 2sec‑
10sec, the slope will move from .0.01º/sec to 0.2º/sec.
‑ If you press and hold an Arrow button longer than
10sec, the slope will move 0.2º/sec.
Arrow Buttons (Fig.B, R)
The arrow buttons (Fig. B,
6
and
7
) are used for different
functions depending on the operating mode of the laserunit.
• In Self‑Leveling Horizontal Mode, the arrow buttons
rotate the direction of the laser beam clockwise or
counter‑clockwise during rotation, or adjust the position
of the laser beam clockwise or counter‑clockwise during
ScanMode.
• In Self‑Leveling Vertical Mode, the arrow buttons
rotate the direction of the laser beam clockwise or
counter‑clockwise during rotation, or adjust the position
of the laser beam clockwise or counter‑clockwise during
ScanMode.
• In Slope Mode, the arrow buttons are used to tilt the
laserhead.
Turning the Laser On (Fig.B, E)
1. Insert the fully charged 20V battery pack as shown in
FigureE.
2. Gently press the power button
1
to power ON the laser.
‑ The power LED indicator light
9
will illuminate
‑ Self‑leveling mode is activated automatically and
the laser unit will self‑level. Once the laser unit is
level, the beam will rotate once at 600RPM in the
clockwisedirection.
‑ After 10sec., Hi Mode (anti‑ drift / bump alert)
is activated automatically and the Hi LED
8
willilluminate.
3. Press the speed/rotation button
3
to adjust the rotation
speed. The direction can be changed using buttons
6
and
7
.
4. Press the Scan button
4
to set the laser to scan in 0°, 15°,
45°, or 90° degreemode.
If you turn ON Slope Mode, the Slope LED
12
will light. If using
X‑axis leveling, the X‑axis LED
24
will light, or if using Y‑axis
leveling, the Y‑axis LED
25
will lightinstead.
Calibrating the Laser (Fig.O, P)
Field calibration checks should be done frequently. This section
provides instructions for performing simple field calibration
checks of your DeWALT Rotary Laser. Field calibration checks do
not calibrate the laser. That is, these checks do not correct errors
in the leveling or plumbing capability of the laser. Instead, the
checks indicate whether or not the laser is providing a correct
level and plumb line. These checks cannot take the place of
professional calibration performed by a DeWALT servicecenter.
Level Calibration Check (X‑axis)
1. Set up a tripod between two walls that are at least 50feet
apart. The exact location of the tripod is notcritical.
2. Mount the laser unit on the tripod so that the X‑axis points
directly toward one of thewalls.
3. Turn the laser unit on and allow it to self‑level.
4. Mark and measure points A and B on the walls as shown in
FigureO.
5. Turn the entire laser unit 180º so the X‑axis points directly
toward the oppositewall.
6. Allow the laser unit to self‑level, and mark and measure
points AA and BB on the walls as shown in FigureP.
7. Calculate the total error using the equation:
Total Error = AA – A and BB– B
8. Compare total error to the allowable limits shown in the
following table. If either error above is greater that the value
in the table below, the laser must berecalibrated.
Distance
Between Walls
Allowable Error
DW074LR
Allowable Error
DW079LR/DW079LG
40 ft. 3/32" 3/64"
50 ft. 1/8" 1/16"
70 ft. 5/32" 3/32"
100 ft. 1/4" 1/8"
Level Calibration Check (Y‑axis)
Repeat the procedure above, but with the laser unit positioned
so the Y‑axis is pointed directly toward thewalls.
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