-24-
Automatic leveling
Overview
After switching on, the laser level checks the
horizontal and vertical position and automati-
cally levels out any unevenness within the
self-leveling range of approx. ±8.5% (±5°).
The leveling indicator flashes on
the display during leveling. The
status display (12) on the laser
level and the status display for the
respective axis ((35) or (34)) on the remote
control flash a uniform green at the same
time.
The rotation is stopped until leveling has been
completed and the laser beams are flashing.
The home screen will appear after leveling
has been successfully completed. The laser
beams will light up continuously and rotation
will start. The status display (12) on the laser
level and the status display for the leveled axis
((35) or (34)) on the remote control will light
up green continuously.
If the laser level is at a slant
of more than 8.5% or it is
positioned differently to
the horizontal or vertical
position, leveling will no longer be possible.
An error message will appear on the display
and the status display (12) will flash red.
Reposition the laser level and wait for it to re-
level.
If the maximum leveling
time is exceeded, leveling
will be discontinued with
an error message.
Reposition the laser level and briefly press the
on/off button (11) to restart leveling.
Position changes
When the laser level is leveled in, it continu-
ously checks the horizontal and vertical posi-
tion. Re-leveling is automatically performed if
there are any position changes.
Minimal position changes are leveled out
without interrupting the operation. This auto-
matically compensates subsoil ground vibra-
tions or weather influences.
For larger position changes, the rotation of
the laser beam will be stopped in order to
avoid faulty measurements during the leveling
process and the laser beams will flash. The
leveling indicator will appear on the display.
The shock-warning function will be actuated,
if required.
The laser level will automatically detect the
horizontal or vertical position. To change be-
tween the horizontal and the vertical posi-
tion, switch the laser level off, reposition it
and switch it on again.
If the position is changed without
switching on/off, an error mes-
sage will appear and the status
display (12) will quickly flash red.
Briefly press the on/off button (11) to restart
leveling.
Shock-warning function
The laser level has a shock-warning function.
After position changes or shock to the laser
level, or in case of ground vibrations, it keeps
the laser level from leveling in at changed po-
sitions, and thus prevents errors caused by a
change in the laser level’s position.
Activating the shock-warning function:
The shock-warning function is
switched on by default. It is acti-
vated approximately 30 seconds
after the laser level has been
switched on. During activation, the shock-
warning indicator (c) will light up on the dis-
play. The indicator lights up continuously after
activation.
Shock warning actuated:
If the position of the laser level is
changed or a severe knock is reg-
istered, the shock warning will be
actuated. The laser will stop rotat-
ing and an error message will appear. The sta-
tus display (12) will quickly flash red and a
warning signal will sound at a faster rate.
Confirm the warning message with by
pressing the slope button (14) on the laser
level or the slope button (32) on the remote
control. When working with automatic level-
ing (including slope operation), leveling is au-
tomatically restarted.
Now check the position of the laser beam at a
reference point and, if necessary, correct the
height or alignment of the laser level.
To adjust/switch off the shock warning
function:
On the home screen, the current setting is
shown with the shock-warning indicator (c):
GRL4000-90CHVG 10-21.indd 24
10/20/21 3:24 PM