Height Of Instrument Alert - DeWalt DW074LR Guide D'utilisation

ENGLISH
Mounting on a Grade Rod (Fig.
To secure your detector to a grade rod, first attach the detector
to the clamp using the 1/4"-20 threaded knob
of the clamp. Slide the tracks
33 on the grade rod.
1. Position the detector at the height needed and turn the
clamp knob clockwise to tighten the jaws of the clamp
around the grade securing the clamp on the rod.
2. To make adjustments in height, slightly loosen the clamp,
reposition and retighten.
Construction Grade Rod (Fig.

DANGER: NEVER attempt to use a grade rod in a
storm or near overhanging electric wires. Death or
serious personal injury will occur.
Some laser kits include a grade rod. The D
Rod is marked with measurement scales on both sides and
is constructed in telescoping sections. A spring-loaded button
actuates a lock to hold the grade rod at various lengths.
The front of the grade rod has the measurement scale starting
at the bottom. Use this for measuring from the ground up when
grading or leveling jobs.
The back of the grade rod is designed to measure the height
of ceilings, joists, etc. Fully extend the top section of the grade
rod until the button locks into the previous section. Extend that
section either until it locks into the adjacent section or until the
grade rod touches the ceiling or joist. The height is read where
the last extended section exits the previous lower section, as
shown in Figure .
L
Target Card (Fig.
Some laser kits include a Laser Target Card to aid in locating
and marking the laser beam. The target card enhances the
visibility of the laser beam as the beam crosses over the card.
The card is marked with standard and metric scales. The laser
beam passes through the red plastic and reflects off of the
reflective tape on the reverse side. The magnet at the top of
the card is designed to hold the target card to ceiling track or
steel studs to determine plumb and level positions. For best
performance when using the Target Card, the D
should be facing you.
Laser Enhancement Glasses (Fig.
Some laser kits include a pair of Laser En hancement Glasses.
These glasses improve the visibility of the laser beam under
bright light conditions or over long distances when the laser is
used for interior applications. These glasses are not required to
operate the laser.

CAUTION: These glasses are not ANSI approved
safety glasses and should not be worn while operating
other tools. These glasses do not keep the laser beam
from entering your eyes.
DW074_DW079 User Manual - NA - TRANSLATED.indd 16
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on the back
47
32 on the clamp around the rail
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WALT Grade
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WALT logo
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DANGER: To reduce the risk of serious personal injury,
never stare directly into the laser beam, with or without
these glasses.
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 Calibrating the Laser.
• Calibration checks and other maintenance repairs can be
performed by D WALT service centers. Two free calibration
e
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.
Troubleshooting

Height of Instrument Alert

The DW074LR and DW079LR/LG have a built-in alarm feature
that alerts the operator if the unit is disturbed after the unit has
self-leveled. The laser unit will stop rotating, the control panel
LED indicator light will flash, and the beeper will sound.
Turning the Laser Off
Press the the power button for 3 sec to turn the laser off. The
power LED indicator light will no longer be illuminated.
To Reset The Laser Unit for Continued Use
Turn the unit off and back on again using the power button on
the laser unit control panel.
NOTE: Always recheck the laser setup after the Height of
Instrument Alert (Hi mode) has triggered.
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WALT One Year Free
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5/17/2018 2:05:34 PM