-24-
Locking the keyboard
The keyboard of the laser level
and the remote control can be
locked via the Bosch Leveling Re-
mote App. The keyboard lock in-
dicator will appear on the laser level’s display.
The keyboard can be unlocked as follows:
– via the Bosch Leveling Remote App,
– by switching the laser level on and off via
the on/off button (11)
– or by pressing the ▲/ (4) and ▼/ (3) but-
tons on the measuring tool at the same
time.
Operating Modes
Alignment of X and Y-axis
-X
+X
-Y
+Y
(16)
(16)
Pr
ofes
sio
na
l
GR
L4
00
0-8
0C
HV
The alignment of the X and Y axes is marked
on the housing above the rotation head. The
markings are exactly above the alignment
notches (16) at the bottom edge of the hous-
ing and on the lower handle. The laser level
can be aligned along the axes by using the
alignment notches.
Operating modes overview
All three operating modes are possible with
the laser level in horizontal and vertical posi-
tion.
Rotational operation
Rotational operation is es-
pecially recommended when
using the laser receiver. For
GRL4000-80CHV it is possible
to select between different ro-
tational speeds.
Line operation
(for GRL4000-80CHV only)
In this operating mode, the vari-
able laser beam moves within a
defined aperture angle. This
increases the visibility of the
laser beam in comparison to
rotational operation. You can
select between different aper-
ture angles.
Point operation
(for GRL4000-80CHV only)
In this operating mode, the
best visibility of the variable
laser beam can be reached.
For example, it is used to eas-
ily project heights or to check
building lines.
Line and point operation are not suitable for
use with the laser receiver (42).
Rotational operation
(for GRL4000-80CHV)
Each time after switching on, the measuring
tool is in rotational operation mode with stan-
dard rotational speed (300 min–1).
To switch from line operation to rotational op-
eration, press the rotational operation button
(6) or the rotational operation button (27) on
the remote control.
To change the rotational speed,
press the rotational operation
button (6) or the rotational opera-
tion button (27) on the remote
control until the required speed is indicated
on the display.
The set speed can be seen on the rotational
speed indicator (h) on the home screen.
When working with the laser receiver, the
highest rotational speed should be set. When
not working with the laser receiver, reduce
the rotational speed for improved visibility of
the laser beam and use the laser goggles (52).
Rotational operation (for GRL4000-80CH)
Each time after switching on, the measuring
tool is in rotational operation mode with stan-
dard rotational speed (600 min–1). Adjusting
the speed for the GRL4000-80CH is not pos-
sible.
