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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.
Distance
Between Walls
30' (9m)
40' (12m)
50' (15m)
CHECKING ACCURACY – VERTICAL BEAM (FIG. 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).
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.
Ceiling
Height
8' (2.5m)
10' (3.0m)
14' (4.0m)
20' (6.0m)
30' (9.0m)
8
Allowable Distance
Between Marks
1/4" (6.0mm)
5/16" (8.0mm)
13/32" (10.0mm)
Allowable Distance
Between Marks
5/32 (3,5 mm)
3/16 (4,5 mm)
1/4 (6,0 mm)
3/8 (9,0 mm)
1/2 (13 mm)
Troubleshooting
THE LASER DOES NOT TURN ON
• Make sure batteries are installed according to (+) and (–) on the inside of the battery door.
• Make sure the batteries 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 DW087 and DW088 have been designed to self-level up to an average of 4° in all directions when positioned as shown in Figure 3. If the laser is tilted so
much that internal mechanism cannot level itself, it will flash the laser (Fig. 4) – 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 DW087 and DW088 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.
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 cen-
ters. Service or maintenance performed by unqualified personnel may result in a risk of injury. To locate your nearest D
1-800-4-D
WALT (1-800-433-9258) or go to http://www.dewalt.com on the Internet.
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SPECIFICATIONS
Light Source
Semiconductor laser diode
Laser Wavelength
630 – 680nm Visible
Laser Power
<1mw (each beam) CLASS II LASER PRODUCT
Working Range
165' (50m) (with detector)
Accuracy (Level)
± 1/8" per 30' (±3mm per 9m)
Indicators
Flashing Indicator: battery low
Flashing Laser: tilt range exceeded
Power Source
3 AA (1.5V) size batteries (4.5V DC)
Operating Temperature
20°F to 115°F (-10°C to 45°C)
Storage Temperature
-5°F to 140°F (-20°C to 60°C)
Environmental
Water Resistant
Three Year Limited Warranty
D
WALT will repair, without charge, any defects due to faulty materials or workmanship for three years from the date of purchase. This warranty does not cover part
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failure due to normal wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit www.dewalt.com or call 1-800-4-D
433-9258). This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. This warranty gives you specific
legal rights and you may have other rights which vary in certain states or provinces.
In addition to the warranty, D
WALT tools are covered by our:
e
D
WALT will maintain the tool and replace worn parts caused by normal use, for free, any time during the first year after purchase.
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90 DAY MONEY BACK GUARANTEE
If you are not completely satisfied with the performance of your D
WALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of
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purchase with a receipt for a full refund – no questions asked.
RECONDITIONED PRODUCT: Reconditioned product is covered under the 1 Year Free Service Warranty. The 90 Day Money Back Guarantee and the Three Year Limited
Warranty do not apply to reconditioned product.
FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are missing, call 1-800-4-D
replacement.
WALT service center call
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1 YEAR FREE SERVICE
WALT or visit your local service center for a free
e
WALT (1-800-
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