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• Turn the unit on if not already on, so that the lasers are on and
rotating.
• Go to surface #1 and mark the center of the beam.
• Go to surface #2 and mark the center of the beam.
• The difference between the marks on surface #1 must equal the
difference between the marks on surface #2. If these are not
equal, there was user set up or marking error.
• If the difference between the marks on surface #1 is 1/4" or less,
the Laser is properly calibrated.
• If the difference between the marks on surface #1 is more than
1/4", have your Rotary Laser calibrated at a D
EWALT service
center.
CONE ERROR CHECK
• Your D
EWALT Rotary Laser contains 2 laser diode assemblies. It
is highly unlikely that both lasers would have shifted by identical
amounts. The easiest way to test for possible “cone error” is to
compare the two laser beams.
• Level the laser, following instructions in the “Horizontal Leveling”
section of this manual.
• Quick Check:
1. Turn the unit on so that the lasers are on and rotating.
2. You should see a single red line on a vertical surface. If you see
a double line, have your Rotary Laser calibrated by a DEWALT
service center.
• Turn unit on so that the lasers are on but NOT rotating.
• Using the Manual Rotation Button, rotate the head so that the
lasers appear as two dots on a vertical surface about 25 feet
away.
• Compare the vertical position of the center of each laser beam.
The centers should be within 3/32"(vertically) of each other.
• If the centers of the two beams differ by more than 3/32" (verti-
cally), then have your Rotary Laser calibrated at a D
EWALT ser-
vice center.
PLUMB ERROR CHECK
• Set up a tripod about 25 feet from a vertical surface.
• Mount your Rotary Laser on the tripod.
• Following the procedure in the “Two Position Pivoting Head”
section of this manual, set the Rotary Laser head in the plumb
position.
• Hang a plumb bob from the vertical surface.
• Level the laser, following instructions in the “Vertical Plumbing”
section of this manual.
• Turn the unit on so that the lasers are on and rotating.
• Rotate the laser on the tripod so that the beam is in the line with
the plumb bob.
• Ensure that the laser is still level.
• If the beam lies along the same line as the plumb bob string, then
the calibration is acceptable.
• If the beam does not lie along the same line as the plumb bob
string, have your Rotary Laser calibrated at a D
EWALT service
center.
Accessories
Recommended accessories for use with your tool are available at
extra cost from your local service center. If you need any assistance
in locating any accessory, please contact D
EWALT Industrial Tool Co.,
701 East Joppa Road, Baltimore, MD 21286 or call 1-800-4-D
EWALT.
(1-800-433-9258) See our catalog on the World Wide Web at www.
D
EWALT.com.
CAUTION: The use of any non-recommended accessory may be
hazardous.
Repair
To assure product SAFETY and RELIABILITY, repairs, maintenance
and adjustment should be performed by certified service centers or
other qualified service organizations, always using identical replace-
ment parts.