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DeWalt DW078 Manual

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ENGLISH
39
Voltage NiCd NiMH LI
9.6 DE9061 – –
12 DE9071/DE9075 DE9501 –
14.4 DE9091/DE9092 DE9502 DE9140
18 DE9095/DE9096 DE0503 DE9180
Consult your dealer for further information on the
appropriate accessories.
MAINTENANCE
Your DEWALT laser unit has been designed to
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper laser care and regular
cleaning.
• 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 DEWALT service
centres.
• 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
-18˚C (0˚F) or above 41˚C (105˚F).
• The charger is not serviceable. There are no
serviceable parts inside the charger.
Field Calibration Check (fi g. 5, 6)
WARNING: Always have the laser head
calibrated by a qualified repair agent.
Field calibration checks should be done frequently.
NOTE: As part of the DEWALT guarantee,
the owner is entitled to one FREE calibration
service within the first year. Simply complete
the enclosed voucher and return along with the
laser and proof of purchase to an authorised
DEWALT agent. A certificate will be awarded at
no additional charge.
Field calibration checks do not calibrate the laser.
These checks indicate whether or not the laser is
providing a correct level line and do not correct
errors in the leveling capability of the laser.
These checks cannot take the place of professional
calibration performed by a DEWALT service centre.
LEVEL CALIBRATION CHECK (X-AXIS)
1. Set up a tripod between two walls that are at
least 15 m (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 5.
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 6.
7. Calculate the total error using the equation:
Total Error = (AA – A) – (BB – B)
8. Compare total error to the allowable limits
shown in the following table.
Distance between walls Allowable Error
L = 15 m (50 ft.) 3 mm (0.125")
L = 25 m (80 ft.) 5 mm (0.2")
L = 50 m (160 ft.) 10 mm (0.4")
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.
Cleaning
WARNING:
• Unplug the charger before cleaning. Dirt
and grease may be removed from the
exterior of the charger using a cloth or
soft non-metallic brush. Do not use water
or any cleaning solutions.
• Remove the battery pack before cleaning
your laser unit.
• Never use solvents or other
harsh chemicals for cleaning the
non-metallic parts of the laser. 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.
… 41 …


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