Bosch GRL145HV Consignes De Fonctionnement/Sécurité page 9

lead to deviations. Therefore, check the
accuracy of the tool each time before starting
your work.
Should the tool exceed the maximum
deviation during one of the tests, see
recalibration procedure or have it recalibrated
by a Bosch after-sales service center.
Leveling
In the level position, the tool automatically
self-levels within ±6°. When the laser beam is
turned on, the LED flashes red, the laser dot
flashes, and the beeper sounds while the tool
self-levels. Once the tool is level, the LED
turns to a steady green, the beeping stops,
and the laser begins rotating at the
slow speed
Manual Sloping
The tool can be put into the manual slope
mode by pressing the rotation and
dithering/dot buttons simultaneously and
holding for 3 seconds. The unit will beep twice
to indicate the unit is in manual slope mode.
Note that the unit will not self-level when in the
manual slope mode.
Use the slope control buttons located on the
side portion of the keypad to move the beam
up or down to the desired slope angle. While
in the manual slope function, the tool can be
operated in the point, dither or rotation modes.
When the beam reaches its minimum or
maximum allowable slope, a continuous beep
sound is heard on further key press.
To return the tool back to the self-leveling
mode, press the rotation and dithering/dot
buttons simultaneously for 3 seconds. The unit
will beep once to indicate that it is back in
self-leveling mode
.
Calibration
Although the GRL 145HV laser tools are
calibrated to specification before leaving the
factory, they contain many precision-machined
parts that may be affected if subject to abuse.
Therefore, if a unit is dropped or sustains
significant impact, check its calibration. It is
also recommended that the tool be
periodically calibrated, as a normal
maintenance procedure.
Line I
Side I
To Calibrate the GRL 145HV:
1. Select a site for calibration that allows the
2. Set the unit on a level surface at one end
3. Turn on the unit with its power switch, then
4. Simultaneously press the keypad
5. Mark the laser beam height (center) on the
6. Rotate the tool 180°, taking care not to
Line II
Compare the height of A and B. If the heights
match, proceed to step 13. If the heights do
Side II
not match, proceed to step 7.
The goal of the next few steps is to position
the level laser beam dot at a height halfway
between A and B.
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unit to be placed about 50 ft. (15m) away
from a smooth vertical surface, such as
a wall.
of the range. Place the unit with the side
marked I toward the wall.
press the keypad laser on/off button
calibration axis I and II buttons. Hold for
five seconds, then release. Three beeps
indicate that the unit has entered
calibration mode. When in calibration
mode, the laser beam is in rotation mode
(rotational). Position the unit such that
Line I and the laser beam point toward the
vertical surface. Line I must be square
(90°) to the wall.
vertical surface of the wall, as A.
change its height. Line I should be
positioned exactly 180° from its original
position and the opposite side facing the
same wall as in step 4. Mark the laser
beam height on the same vertical surface,
as B.