Bosch GCL 2-50 G Professional Manual Original página 17

If the batteries are almost empty, the battery indicator (2)
will flash continuously. The laser lines will flash for 5 seconds
every 5 minutes.
If the batteries are empty, the laser lines and the battery in-
dicator will flash once before the measuring tool switches
off.
Always replace all the batteries at the same time. Only use
batteries from the same manufacturer and which have the
same capacity.
Take the batteries out of the measuring tool when you
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are not using it for a prolonged period of time. The bat-
teries can corrode and self-discharge during prolonged
storage in the measuring tool.
Operation
Starting Operation
Protect the measuring tool from moisture and direct
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sunlight.
Do not expose the measuring tool to any extreme tem-
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peratures or fluctuations in temperature. For example,
do not leave it in a car for extended periods of time. If it
has been subjected to significant fluctuations in temper-
ature, first allow the measuring tool to adjust to the ambi-
ent temperature and then always carry out an accuracy
check before continuing work (see "Accuracy Check of
the Measuring Tool", page 18).
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
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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 18).
Switch the measuring tool off when transporting it.
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The pendulum unit is locked when the tool is switched off,
as it can otherwise be damaged by big movements.
Switching On/Off
To switch on the measuring tool, slide the on/off switch (4)
to the "On" position. As soon as it is switched on, the meas-
uring tool emits laser beams from the outlet apertures (1).
Do not direct the laser beam at persons or animals and
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do not stare into the laser beam yourself (even from a
distance).
The measuring tool can be used with a laser receiver (19) at
any time.
To switch off the measuring tool, slide the on/off switch (4)
to the Off position. The pendulum unit is locked when the
tool is switched off. Never leave the measuring tool unattended when
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switched on, and ensure the measuring tool is
switched off after use. Others may be blinded by the
laser beam.
Bosch Power Tools
If the maximum permitted operating temperature of 45 °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.
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 auto-
matically switched off, you can either slide the on/off
switch (4) to the "Off" position first and then switch the
measuring tool back on, or press the laser operating mode
button (3).
To deactivate the automatic shut-off function, hold down the
laser mode button (3) 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.
Note: If the operating temperature exceeds 45 °C, automatic
shut-off can no longer be deactivated.
To activate the automatic shut-off function, switch the meas-
uring tool off and on again.
Operating Modes
The measuring tool has several operating modes, which you
can switch between at any time:
– Cross-line and point mode (see figure A): The measuring
tool generates a horizontal and a vertical laser line facing
forwards as well as two vertical laser points – one facing
up, the other down.
– Horizontal operation (see figure B): The measuring tool
generates a horizontal laser line.
– Vertical operation (see figure C): The measuring tool
generates a vertical laser line.
If the measuring tool is positioned in the room, the ver-
tical laser line is displayed on the ceiling beyond the up-
per laser point.
– Point mode: (see figure D): The measuring tool generates
two vertical laser points – one facing up, the other down.
To change the operating mode, press the button for laser op-
erating mode (3) as often as required until the laser beams
are generated in the required operating mode.
All operating modes can be used with both automatic level-
ling and the incline function.
All operating modes are suitable for operation with the laser
receiver (19).
Automatic Levelling
The measuring tool monitors the position at all times during
operation. It works with automatic levelling during set-up
within the self-levelling range of ±4°. Outside of the self-lev-
elling range, it will automatically switch to the incline func-
tion.
Working with automatic levelling (see figures A–D)
Position the measuring tool on a level, firm surface or attach
it to the rotating mount (11) or the tripod (21).
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1 609 92A 7LT | (28.04.2022)