Laser Maintenance - DeWalt DW074LR Guide D'utilisation

ENGLISH
MAINTENANCE

Laser Maintenance

• Under some conditions, the glass lens may collect some dirt
or debris. This will affect beam quality and operating range.
The lens should be cleaned with a cotton swab moistened
with water.
• The flexible rubber shield can be cleaned with a wet lint-
free cloth such as a cotton cloth. USE WATER ONLY — DO
NOT use cleansers or solvents. Allow the unit to air dry
before storing.
• To maintain the accuracy of your work, check the calibration
of the laser often. Refer to Field Calibration Check.
• Calibration checks and other maintenance repairs can be
performed by D WALT service centers. Two free calibration
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checks are included under the D
Service Con tract.
• When the laser is not in use, store it in the kit box provided.
• Do not store your laser in the kit box if the laser is wet. Dry
exterior parts with a soft, dry cloth and allow the laser to
air dry.
• Do not store your laser at temperatures below 0˚F (-18˚C)
or above 105˚F (41˚C).

WARNING: Never use solvents or other harsh chemicals
for cleaning the non-metallic parts of the tool. These
chemicals may weaken the materials used in these parts.
Use a cloth dampened only with water and mild soap.
Never let any liquid get inside the unit; never immerse any
part of the unit into a liquid. Never use compressed air to
clean the laser.
Field Calibration Check (Fig. O, P)
Field calibration checks should be done frequently. This section
provides instructions for performing simple field calibration
checks of your D WALT Rotary Laser. Field calibration checks do
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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 D
Level Calibration Check (X-axis)
1. Set up a tripod between two walls that are at least 50 feet
apart. The exact location of the tripod is not critical.
2. Mount the laser unit on the tripod so that the X-axis points
directly toward one of the walls.
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
Figure O.
5. Turn the entire laser unit 180º so the X-axis points directly
toward the opposite wall.
6. Allow the laser unit to self-level, and mark and measure
points AA and BB on the walls as shown in Figure P.
7. Calculate the total error using the equation:
Total Error = (AA – A) – (BB– B)
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WALT service center.
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8. Compare total error to the allowable limits shown in the
following table.
Distance between walls
L = 50 ft. (15.3 m)
L = 75 ft. (22.9 m)
L = 100 ft. (30.5 m)
Level Calibration Check (Y-axis)
Repeat the procedure above, but with the laser unit positioned
so the Y-axis is pointed directly toward the walls.
Plumb Error Check (Fig. Q)
1. Using a standard plumb bob as a reference, mark the top
and bottom of a wall. (Be sure to mark the wall and not the
floor and ceiling.)
2. Position the rotary laser securely on the floor approximately
3' (1 m) from the wall.
3. Turn the laser on, and point the dot at the mark on the
bottom of the wall. Then, using the up/down arrows on the
remote control, rotate the dot upwards. If the center of the
dot scans over the mark on the top of the wall, the laser is
properly calibrated.
NOTE: This check should be done with a wall no shorter than
the tallest wall for which this laser will be used.
Service and Repairs
NOTE: Disassembling the laser level will void all warranties on
the product.
To assure product SAFETY and RELIABILITY, repairs,
maintenance and adjustment should be performed by
authorized service centers. Service or maintenance performed
by unqualified personnel may result in a risk of injury. To locate
your nearest D WALT service center call 1–800–4-D
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(1–800–433–9258) or visit our website: www.D
Register Online
Thank you for your purchase. Register your product now for:
• WARRANTY SERVICE: Registering your product will help
you obtain more efficient warranty service in case there is a
problem with your product.
• CONFIRMATION OF OWNERSHIP: In case of an insurance
loss, such as fire, flood or theft, your registration of
ownership will serve as your proof of purchase.
• FOR YOUR SAFETY: Registering your product will allow us
to contact you in the unlikely event a safety notification is
required under the Federal Consumer Safety Act.
Register online at www.dewalt.com/register.
Three Year Limited Warranty
D WALT will repair, without charge, any defects due to faulty
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materials or workmanship for three years from the date of
purchase. This warranty does not cover part failure due to
normal wear or tool abuse. For further detail of warranty
coverage and warranty repair information, visit www.D
com or call 1–800–4-D
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Allowable Error
1/8" ( 3 mm)
3/16" (4.5 mm)
1/4" (6 mm)
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WALT (1–800–433–9258). This warranty
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WALT
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WALT.
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