DeWalt DW071 Mode D'emploi page 33

These are:
- DE0732 Digital laser detector with clamp
- DE0734 Grade rod
- DE0736 Tripod
Maintenance
Your D WALT Power Tool has been designed to
E
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular cleaning.
Field calibration check
The field calibration checks must be performed
securely and accurately to make a correct diagnosis.
Whenever an error is registered, have the tool
calibrated by a qualified repair agent.
Always have the laser head calibrated by
a qualified repair agent.
Tilt error checks
The following checks are performed to check the
calibration of laser head for level alignment.
• Place the tool in an area midway between two
vertical surfaces that are about 30 m away from
each other.
• With the tool in a tripod set-up, adjust the head
for a level application.
• To perform a quick check, read the front and rear
air levels. After one of the air levels has been
adjusted they should both be level. If the other air
level is not level, the laser head must be calibrated.
To perform a front-to-back tilt error check:
• Position the tool so that it is aimed front-to-back
toward the vertical surfaces.
• Switch on the tool with the laser head rotating.
• Mark the centre of the laser beam on each of the
surfaces.
• Switch off the tool and rotate it 180° so that it is
aimed front to back the other way around.
• Switch on the tool with the laser head rotating
and once again mark the centre of the laser
beam on each of the surfaces. Switch off the
tool.
• Measure the difference between the marks on
both surfaces. The difference between the marks
on the one surface must equal the difference
between the marks on the other surface.
• If the difference between the marks is 6.35 mm
or less, the laser head is properly calibrated.
• If the difference between the marks is more than
6.35 mm, the laser head must be calibrated.
To perform a side-to-side tilt error check:
• Position the tool so that it is aimed side-to-side
toward the vertical surfaces.
• Following the same procedure as described
above, mark the centre of the laser beam on
each of the surfaces with the tool in this position,
after which the tool is rotated 180° to mark the
centre of the laser beam once again.
• Measure the difference between the marks on
both surfaces. The difference between the marks
on the one surface must equal the difference
between the marks on the other surface.
• If the difference between the marks is 6.35 mm
or less, the laser head is properly calibrated.
• If the difference between the marks is more than
6.35 mm, the laser head must be calibrated.
Cone error check
The following check is performed to check the
calibration of laser beam relative to the laser head.
• Place the tool in an area at about 7.5 m from a
vertical surface.
• Adjust the head for a level application.
• To perform a quick check, switch on the tool with
the laser head rotating. The tool should produce
a single line. If the tool produces a double line,
the laser head must be calibarated.
• Switch on the tool with the laser head stationary.
• Rotate the head so that the laser dots appear on
the vertical surface.
• Mark the vertical position of the centre of each of
the laser beams. Switch off the tool.
• Measure the difference between the marks.
• If the difference between the marks is 2.4 mm or
less, the laser head is properly calibrated.
• If the difference between the marks is more than
2.4 mm, the laser head must be calibrated.
Plumb error check
The following check is performed to check the
calibration of laser head for plumb alignment.
• Place the tool in an area at about 7.5 m from a
vertical surface.
E N G L I S H
33