Operating Modes; Automatic Leveling - Bosch GLL50-40G Operating/Safety Instructions Manual

Automatic Shut-off
If no button on the measuring tool
is pressed for approx. 120 min, the
measuring tool will automatically switch
itself off to preserve battery life.
To switch the measuring tool back on after
it has been automatically switched off,
you can either slide the on/off switch (2)
to the "Off" position first and then switch
the measuring tool back on, or press the
laser operating mode button (4).
To deactivate the automatic shut-
of f function, hold down the laser
mode button (4) for at least 3 s (with
the measuring tool switched on). If the
automatic shut-off function is deactivated,
the laser beams will flash briefly as
confirmation.
To activate the automatic shut-of f
function, switch the measuring tool off
and on again.

Operating Modes

The measuring tool has three operating
modes, which you can toggle through with
the laser mode button (4):
– Cross-line mode (see figure A):
Generates one horizontal and one
vertical laser line
– Horizontal mode (see figure B):
Generates one horizontal laser line
– Vertical mode (see figure C): Generates
one vertical laser line
To change the operating mode, press the
button for laser operating mode (4) as
often as required until the laser beams are
generated in the required operating mode.
All operating modes can be used with
both automatic leveling and the incline
function.
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Automatic Leveling

The measuring tool monitors its position
at all times during operation. It works with
automatic leveling during set-up within
the self-leveling range of ±4°. Outside of
the self-leveling range, it will automatically
switch to the incline function.
Working with automatic leveling
(see figures A–C)
Position the measuring tool on a level,
firm surface or attach it to the magnetic
mount bracket LB 10 (10) or the tripod
(17).
T h e a u t o m a t i c l e v e l i n g f u n c t i o n
automatically compensates irregularities
within the self-leveling range of ±4°. Once
the laser beam is permanently lit, the
measuring tool has levelled in.
If automatic leveling is not possible,
e.g. because the surface on which the
measuring tool stands deviates by more
than 4° from the horizontal plane, the
laser lines will initially flash rapidly for
2 seconds, then flash rapidly every 5
seconds. The measuring tool is in the
incline function.
In case of ground vibrations or position
changes during operation, the measuring
tool is automatically leveled again. Upon
leveling, check the position of the laser
beams with regard to the reference points
to avoid errors arising from a change in
the measuring tool's position.
Working with the Incline Function
(see figure K)
Place the measuring tool on an inclined
surface. When working with the incline
function, the laser lines will initially flash
rapidly for 2 seconds, then flash rapidly
every 5 seconds.
In the incline function, the laser lines
are no longer leveled and no longer
necessarily run perpendicular to one
another.
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