Operating Modes - Bosch GRL 250 HV Professional Originalbetriebsanleitung

of the Measuring Tool", page 23).
The precision of the measuring tool may be compromised
if exposed to extreme temperatures or fluctuations in
temperature.
Avoid substantial knocks to the measuring tool and
u
avoid dropping it. Always carry out an accuracy check
before continuing work if the measuring tool has been
subjected to severe external influences (see "Accuracy
Check of the Measuring Tool", page 23).
Starting Operation of the Remote Control
When pressing the operating controls, it is possible to bring
the measuring tool out of its level position, so that the rota-
tion is briefly interrupted. This effect is avoided when using
the remote control.
The remote control remains ready for operation as long as a
battery with sufficient voltage is inserted.
Set up the measuring tool in such a manner that the signals
of the remote control can directly reach one of the
sensors (7). If the remote control cannot be pointed directly
at a sensor, the working range will be reduced. By reflecting
the signal (e.g. against walls), the working range can be im-
proved even for indirect signals.
After pressing a button on the remote control, the signal
transmission indicator (25) will light up, indicating that a sig-
nal has been sent out.
It is not possible to switch the measuring tool on/off with the
remote control.
Starting Operation of the rotary laser
Keep the work area free from obstacles that could re-
u
flect or obstruct the laser beam. For example, cover
any reflective or shiny surfaces. Do not measure
through panes of glass or similar materials. The meas-
urements may be distorted by a reflected or obstructed
laser beam.
Setting up the measuring tool
Horizontal position
Position the measuring tool on a stable surface in the hori-
zontal or vertical position, mount it on the tripod (32) or on
the wall mount (36) with the alignment unit.
Due to its high levelling accuracy, the measuring tool is very
sensitive to knocks and vibrations and changes in position.
Take care, therefore, that the measuring tool is stable to
avoid interruptions to the operation caused by relevelling.
Switching On and Off
To switch on the measuring tool, press the on/off
button (4). All indicators light up briefly. The measuring tool
emits the variable laser beam (6) and the upwards plumb
point (9) from the outlet apertures (8).
Bosch Power Tools
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.
Vertical position
Line and point operation are not suitable for use with the
laser receiver (30).
Each time after switching on, the measuring tool is in rota-
tional operation mode with standard rotational speed
(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.
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.
Rotational Operation
−1
).
1 609 92A 7AR | (07.02.2022)
English | 21