Bosch GRL 150 HV Professional Original Instructions Manual page 31

OBJ_BUCH-757-004.book Page 31 Wednesday, December 10, 2008 4:25 PM
starts the automatic levelling. During the level-
ling, the levelling indicator 3 lights up green and
the laser flashes in point operation.
The measuring tool is levelled in as soon as level-
ling indicator 3 lights up green continuously and
the laser beam is steady. After the levelling is
completed, the measuring tool automatically
starts in rotational operation.
With the operating mode buttons 5 and 11, the
operating modes can already be specified during
levelling in (see "Operating Modes of the Rota-
tional Laser Level", page 31). In this case, the
measuring tool starts in the set operating mode
upon completion of levelling in.
To switch off the measuring tool, press the
On/Off button 4 again.
To save the batteries, the measuring tool is auto-
matically switched off when not within the self-
levelling range for more than 2 h or when the
shock warning is actuated for more than 2 h (see
"Automatic Levelling of the Rotational Laser
Level", page 33). Reposition the measuring tool
and switch it on again.
Operating Modes of the Rotational
Laser Level
Overview
All three operating modes are possible with the
measuring tool in horizontal and vertical position.
Rotational Operation
Rotational operation is especial-
ly recommended when using the
laser receiver. You can select be-
tween different rotational
speeds.
Line Operation
In this operation mode, the vari-
able laser beam moves within a
limited aperture angle. This in-
creases the visibility of the laser
beam in comparison to rotation-
al operation. You can select be-
tween different aperture angles.
Point Operation
This operation mode enables the
best visibility of the variable laser
beam. As an example, it is used
for easy projecting of heights or
checking building lines.
Bosch Power Tools
Rotational Operation
-1
(150/300/600 min )
Each time after switching on, the measuring tool
is in rotational operation mode with average ro-
tational speed.
To switch from line operation to rotational oper-
ation, press the rotational operation button 5.
Rotational operation starts with average rota-
tional speed.
To change the rotational speed, press the rota-
tional operation button 5 again until the re-
quested speed is reached.
When working with the laser receiver, the high-
est rotational speed should be set. When work-
ing without laser receiver, reduce the rotational
speed for improved visibility of the laser beam
and use the laser viewing glasses 42.
Line Operation, Point Operation
(10°/25°/35°, 0°)
To switch to line or point operation, press the
line operation button 11. The measuring tool
switches to line operation with the smallest
aperture angle.
To change the aperture angle, press the line
operation button 11. The aperture angle is in-
creased in two steps; at the same time, the
rotational speed is increased with each step.
When pressing the line operation button 11 a
third time, the measuring tool switches to point
operation after brief post-pulsation. Pressing
button 11 again takes you back to line operation
with the smallest aperture angle.
Note: Due to inertia, it is possible for the laser
to slightly move beyond the end point of the
laser line.
To position the laser line or the laser point with-
in the rotational plane, manually turn the rota-
tion head 10 to the requested position or use
the remote control 46.
Turning the Rotational Plane when in the
Vertical Position
When the measuring tool is in the vertical posi-
tion, it is possible to rotate the laser point, laser
line or rotational plane around the vertical axis
with help of the remote control 46. For this, ob-
serve the operating instructions of the remote
control.
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