Switching On/Off; Operating Modes; Automatic Levelling - Bosch GLL 3-80 G Professional Originalbetriebsanleitung

14 | English

Switching On/Off

To switch on the measuring tool, slide the on/off switch (7)
to the " On" position (for working with the pendulum lock)
or to the " On" position (for working with automatic level-
ling). As soon as it is switched on, the measuring tool emits
laser lines from the outlet apertures (1).
Do not direct the laser beam at persons or animals and
u
do not stare into the laser beam yourself (even from a
distance).
To switch off the measuring tool, slide the on/off switch (7)
to the Off position. The pendulum unit is locked when the
tool is switched off.
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.
If the maximum permitted operating temperature of 40 °C is
exceeded, the tool shuts down to protect the laser diode.
Once it has cooled down, the measuring tool is operational
again and can be switched back on.
If the temperature of the measuring tool is approaching the
maximum permissible operating temperature, the laser lines
will gradually become dimmer.
Deactivating the Automatic Shut-Off Function
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 auto-
matically switched off, you can either slide the on/off switch
(7) to the "Off" position first and then switch the measuring
tool back on, or press either the laser mode button (6) or the
receiver mode button (4) once.
To deactivate the automatic shut-off function, hold down the
laser mode button (6) for at least 3 s (with the measuring
tool switched on). If the automatic shut-off function is deac-
tivated, the laser beams will flash briefly as confirmation.
To activate the automatic shut-off function, switch the meas-
uring tool off and on again.
Deactivating the Signal Tone Function
The signal tone function is always activated once the meas-
uring tool is switched on.
To deactivate or activate the signal tone function, simultan-
eously press the laser mode button (6) and the receiver
mode button (4) and hold them down for at least 3 s.
Three short signal tones will sound as confirmation both
when the signal tone function is activated and deactivated.

Operating Modes

The measuring tool has several operating modes which you
can switch between at any time. These are for:
– Generating a horizontal laser plane,
– Generating a vertical laser plane,
– Generating two vertical laser planes,
– Generating a horizontal laser plane and two vertical laser
planes.
1 609 92A 5DL | (02.10.2019)
After you switch it on, the measuring tool generates a hori-
zontal laser plane. To change the operating mode, press the
laser mode button (6).
All operating modes can be selected with both automatic lev-
elling or the pendulum lock.
Receiver Mode
Receiver mode must be activated when working with the
laser receiver (18), regardless of which operating mode is
selected.
In receiver mode, the laser lines flash at a very high fre-
quency, enabling them to be detected by the laser receiver
(18).
To switch on receiver mode, press the receiver mode button
(4). The receiver mode indicator (5) will light up green.
When receiver mode is switched on, the laser lines are less
visible to the human eye. Therefore, switch receiver mode
off by pressing the receiver mode button (4) again to work
without a laser receiver. The receiver mode indicator (5) will
go out.

Automatic Levelling

Working with Automatic Levelling
Position the measuring tool on a level, firm surface or attach
it to the universal holder (16) or the tripod (21).
For work with automatic levelling, slide the on/off switch (7)
to the " On" position.
The automatic levelling function automatically compensates
irregularities within the self-levelling range of ±4°. The level-
ling is finished as soon as the laser lines stop moving.
If automatic levelling is not possible, e.g. because the sur-
face on which the measuring tool stands deviates by more
than 4° from the horizontal plane, the laser lines will begin to
flash quickly. If the signal tone function is activated, rapid
signal tones will sound.
Set up the measuring tool in a horizontal position and wait
for the self-levelling to take place. As soon as the measuring
tool is within the self-levelling range of ±4°, the laser lines
will light up continuously and the signal tones will cease.
In case of ground vibrations or position changes during oper-
ation, the measuring tool is automatically levelled again.
Upon re-levelling, check the position of the horizontal or ver-
tical laser line with regard to the reference points to avoid er-
rors by moving the measuring tool.
Working with the Pendulum Lock
For work with the pendulum lock, slide the on/off switch (7)
to the " On" position. The pendulum lock indicator (3)
lights up red and the laser lines continuously flash slowly.
For work with the pendulum lock, the automatic levelling is
switched off. You can hold the measuring tool freely in your
hand or place it on a sloping surface. This means that the
laser lines are no longer levelled and no longer necessarily
run perpendicular to one another.
Bosch Power Tools