Initial Operation; Working Advice - Bosch GRL800-20HV Operating/Safety Instructions Manual

direct sun irradiation.
Do not subject the laser tool to extreme
temperatures or variations in temperature.
As an example, do not leave it in vehicles for
longer periods. In case of large variations in
temperature, allow the tool to adjust to the
ambient temperature before putting it into
operation. In case of extreme temperatures or
variations in temperature, the accuracy of the
tool can be impaired.
It is the user's responsibility to periodically
check the accuracy of the laser tool
as work progresses. Always check the
accuracy of the laser tool after it has
been dropped or subject to extreme
temperatures and temperature variations.
Avoid heavy impact and prevent the laser
tool from falling. After heavy exterior impact
on the laser tool, an accuracy check should
always be carried out before continuing to
work (see "Leveling Accuracy").
cause laceration hazard.
Horizontal Position
Set up the laser tool on a sturdy surface in the
horizontal or vertical position; mount it on a
tripod 21 or to the wall mount with alignment
unit 25.
Due to the high leveling accuracy, the laser
tool reacts sensitively to ground vibrations and
position changes. Therefore, pay attention
that the position of the laser tool is stable in
order to avoid operational interruptions due to
re-leveling.
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Initial Operation

Protect the laser tool
against moisture and
If cage breaks
dropped, broken cage can
Setting Up the Laser Tool
Vertical Position
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15
10 20
5 25
0 30
Operation
Turning on the Laser Tool
animals and do not stare into the laser
beam yourself, not even from a large
distance.
Do not leave the switched on laser tool
unattended and switch the laser tool off
after use. Serious eye injury could result from
the laser beam.
Immediately after switching on, the laser tool
sends out the vertical plumb beam 9 and the
variable laser beam 6.
For switching on the laser tool, press the On/
Off button 4. The indicators 1, 3 and 12 light
up briefly. The laser tool immediately starts
the automatic leveling. During the leveling,
the leveling indicator 3 lights up green and the
laser flashes in point operation.
The laser tool is leveled in as soon as leveling
indicator 3 lights up green continuously and
the laser beam is steady. After the leveling is
completed, the laser tool automatically starts
in rotational operation.
when
With the operating mode buttons 5 and 11,
the operating modes can already be specified
during leveling in (see "Operating Modes,
page 14). In this case, the laser tool starts in
the set operating mode upon completion of
leveling in.
Turning off the Laser Tool
To switch off the laser tool, press the On/Off
button 4 again.
unattended and switch the laser tool off
after use.
To save the batteries, the laser tool is
automatically switched off when not within the
self-leveling range for more than 2 h or when
the shock warning is actuated for more than
2 h (see "Automatic Leveling"). Reposition the
laser tool and switch it on again.

Working Advice

Always use the center of the laser point for
marking. The size of the laser point changes
with the distance.
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DO NOT direct the laser
beam at persons or
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