Bosch GRC Professional GRL 300 HV Originalbetriebsanleitung Seite 22

22 | English
Do not direct the laser beam at persons or animals and
u
do not stare into the laser beam yourself (even from a
distance).
The measuring tool immediately starts automatic levelling.
During levelling, the status indicator (3) flashes green, the
laser does not rotate and flashes.
The measuring tool is levelled in as soon as the status
indicator (3) lights up green continuously and the laser lights
up continuously. After levelling is completed, the measuring
tool automatically starts in rotational operation.
Never leave the measuring tool unattended when
u
switched on, and ensure the measuring tool is
switched off after use. Others may be blinded by the
laser beam.
You can already set the operating mode during levelling with
the rotational operation button (5) or the line operation
button (11). In this case, the measuring tool starts in the set
operating mode after levelling is completed.
To switch off the measuring tool, press the on/off
button (4) again.
To save the batteries, the measuring tool is automatically
switched off when not within the self-levelling range for
more than 2 hours or when the shock warning is actuated for
more than 2 hours. Reposition the measuring tool and switch
on again.
Operating Modes
Operating Modes Overview
All three operating modes are possible with the measuring
tool in horizontal and vertical position.
Rotational operation
Rotational operation is especially recommen-
ded when using the laser receiver. It is possible
to select between different rotational speeds.
Line operation
In this operating mode, the variable laser beam
moves within a defined aperture angle. This in-
creases the visibility of the laser beam in com-
parison to rotational operation. You can select
between different aperture angles.
Point operation
In this operating mode, the best visibility of the
variable laser beam can be reached. For ex-
ample, it is used to easily project heights or to
check building lines.
Line and point operation are not suitable for use with the
laser receiver (30).
Rotational Operation
Each time after switching on, the measuring tool is in rota-
tional operation mode with standard rotational speed
−1
(300 min ).
To switch from line operation to rotational operation, press
the rotational operation button (5) or the rotational opera-
tion button (20) on the remote control.
1 609 92A 8LJ | (07.06.2023)
To change the rotational speed, press the rotational opera-
tion button (5) or rotational operation button (20) on the re-
mote control until the required speed is reached.
When working with the laser receiver, the highest rotational
speed should be set. When not working with the laser re-
ceiver, reduce the rotational speed for improved visibility of
the laser beam and use the laser googles (40).
Line Operation/Point Operation
To switch to line or point operation, press the line operation
button (11) or the line operation button (21) on the remote
control.
The measuring tool switches to line operation with the smal-
lest aperture angle.
To change the aperture angle, press the line operation
button (11) or the line operation button (21) on the remote
control until the required operating mode is achieved. The
aperture angle is gradually increased each time it is pressed;
at the same time, the rotational speed is increased with each
setting.
After the largest aperture angle, the measuring tool switches
to point operation after brief post-pulsation. Pressing the
line operation button (11) again takes you back to line oper-
ation 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.
Functions
Turning the Line/Point in a Horizontal Position
within the Rotational Plane (see figure A)
When the measuring tool is in a horizontal position, the laser
line or the laser point can be positioned within the rotational
plane of the laser. Rotation is possible by 360°.
For this, manually turn the rotation head (10) to the re-
quired position or use the remote control: Press the button
for clockwise rotation (23) on the remote control to rotate
clockwise, and the button for anticlockwise rotation (24) on
the remote control to rotate anticlockwise. In rotational op-
eration, pressing the buttons has no effect.
Turning the Rotational Plane when in the
Vertical Position (see figure B)
When the measuring tool is in the vertical position, it is pos-
sible to rotate the laser point, laser line or rotational plane
around the vertical axis for easy sighting out or parallel align-
ment in a range of ±8 %.
Press the button for clockwise rotation (23) on the remote
control to rotate clockwise.
Press the button for anticlockwise rotation (24) on the re-
mote control to rotate anticlockwise.
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