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8 9
User Manual
EN
Checking Accuracy –
Horizontal Beam, Pitch Direction (See figure
7
)
Checking the horizontal pitch calibration of the laser requires a
single wall at least 30’ (9m) long. 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. Attach the laser to one end of a wall using its pivot bracket.
2. Turn on the laser’s horizontal beam and pivot the laser toward
the opposite end of the wall and approximately parallel to the
adjacent wall.
3. Mark the center of the beam at two locations
c
,
d
at least
30’ (9m) apart.
4. Reposition the laser to the opposite end of the wall.
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
d
.
7. Mark the center of the beam
e
directly above or below the
farthest mark
c
.
8. Measure the distance between these two marks
c
,
e
.
9. If the measurement is greater than the values shown below,
the laser must be serviced at an authorized service center.
Checking Accuracy –
Vertical Beam (See Figure
8
)
Checking the vertical (plumb) calibration of the laser can be most
accurately done when there is a substantial amount of vertical
height available, ideally 30’ (9m), 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’ (1.5m) 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.
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
f
. 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
g
, directly
beside the first mark
f
.
Cleaning
Exterior plastic parts may be cleaned with a damp cloth. Although
these parts are solvent resistant, NEVER use solvents. Use a soft,
dry cloth to remove moisture from the tool before storage.
Accuracy Check and Calibration
Checking Accuracy –
Horizontal Beam, Scan Direction (See figure
6
)
Checking the horizontal scan calibration of the laser requires
two walls 30’ (9m) apart. 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. Attach the laser to a wall using its pivot bracket. Make sure the
laser is facing straight ahead.
2. Turn on the laser’s horizontal beam and pivot the laser
approximately 45˚ so that the right-most end of the laser line is
striking the opposing wall at a distance of at least 30’ (9m). Mark
the center of the beam
a
.
3. Pivot the laser approximately 90˚ to bring the left-most end of the
laser line around to the mark made in Step 2. Mark the center of
the beam
b
.
4. Measure the vertical distance between the marks.
5. If the measurement is greater than the values shown below,
the laser must be serviced at an authorized service center.
Distance Between Walls Allowable Distance
Between Marks
30’ (9m) 1/8” (3.0mm)
40’ (12m) 5/32” (4.0mm)
50’ (15m) 7/32” (5.0mm)
7. Measure the distance between these two marks.
8. If the measurement is greater than the values shown below,
the laser must be serviced at an authorized service center.
Distance Between Walls Allowable Distance
Between Marks
30’ (9m) 1/4” (6.0mm)
40’ (12m) 5/16” (8.0mm)
50’ (15m) 13/32” (10.0mm)
Troubleshooting
The Laser Does Not Turn On
• Make sure AA batteries (when used) are installed correctly
according to (+) and (–) on the inside of the battery door.
• Make sure the batteries or rechargeable pack are in proper
working condition. If in doubt, try installing new batteries.
• Make sure that the battery contacts are clean and free of rust or
corrosion. Be sure to keep the laser level dry and use only new,
high-quality, name brand batteries to reduce the chance of battery
leakage.
• If the laser unit is heated above 120˚F (50˚C), the unit will not turn
on. If the laser has been stored in extremely hot temperatures,
allow it to cool. The laser level will not be damaged by pressing
the on/off button before cooling to its proper operating
temperature.
The Laser Beams Flash
The DW088LR and DW088LG have been designed to self-level up
to an average of 4° in all directions when positioned as shown in
3
. If the laser is tilted so much that internal mechanism cannot
level itself, the laser beam will flash indicating that the tilt range
has been exceeded. The flashing beams created by the laser
are not level or plumb and should not be used for determining
or marking level or plumb. Try repositioning the laser on a more
level surface.
The Laser Beams Will Not Stop Moving
The DW088LR and DW088LG are precision instruments.
Therefore, if the laser is not positioned on a stable (and
motionless) surface, the laser will continue to try to find level.
If the beam will not stop moving, try placing the laser on a more
stable surface. Also, try to make sure that the surface is relatively
flat, so that the laser is stable.
The Battery Meter LED’s Flash
When all 4 LED’s continuously flash on the Battery Meter this
indicates that the unit has not been fully powered off using the
Pendulum Lock switch
B
. The Pendulum Lock switch should
always be placed in the LOCKED/OFF position when the laser is
not in use.
Service and Repairs
• Note: Disassembling the laser level(s) 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
DeWALT service center call 1-800-4-DeWALT (1-800-433-9258)
or go to http://www.dewalt.com on the Internet.
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