English |
13
Bosch Power Tools
1 609 929 T98 | (9.12.09)
Switching On and Off
To
switch on
the measuring tool, slide the
On/Off switch
2
to the
“On”
position. Immedi-
ately after switching on, the measuring tool
sends laser beams out of the exit openings
1
.
f
Do not point the laser beam at persons or
animals and do not look into the laser beam
yourself, not even from a large distance.
To
switch off
the measuring tool, slide the
On/Off switch
2
to the
“Off”
position. When
switching off, the levelling unit is locked.
f
Do not leave the switched on measuring
tool unattended and switch the measuring
tool off after use.
Other persons could be
blinded by the laser beam.
Operating Modes
After switching on, the measuring tool is in cross-
line operating mode with automatic levelling.
To change the operating mode, press the
“Mode”
button
8
until the requested operating
mode is indicated by the corresponding illumi-
nated operating-mode indication
10
.
The following operating modes are available:
All three operating modes can be selected either
with or without automatic levelling.
Automatic Levelling
Working with Automatic Levelling
(see figure F–G)
When working with automatic levelling, the indi-
cator for working without automatic levelling
11
may not be lit. If required, switch the automatic
levelling on again by pressing the
“Lock”
button
7
so that the indicator
11
goes out.
Position the measuring tool on a level and firm
support, attach it to the holder
12
or to the tri-
pod
17
.
After switching on, the levelling function auto-
matically compensates irregularities within the
self-levelling range of
±
4°. The levelling is fin-
ished as soon as the laser beams do not move
any more.
If the automatic levelling function is not possi-
ble, e.g. because the surface on which the
measuring tool stands deviates by more than 4°
from the horizontal plane, the levelling warning
indicator
9
lights up red and the laser is auto-
matically switched off. In this case, bring the
measuring tool to the level 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 levelling warning indicator
9
goes
out and the laser is switched on.
When not within the self-levelling range of
±
4°,
working with automatic levelling is not possible,
because it cannot be assured that the laser lines
run at a right angle to each other.
In case of ground vibrations or position changes
during operation, the measuring tool is automat-
ically levelled in again. To avoid errors, check
the position of the horizontal and vertical laser
line with regard to the reference points upon re-
levelling.
Working without Automatic Levelling
(see figure E)
When working without automatic levelling, press
the
“Lock”
button
7
. When the automatic level-
ling is switched off, indicator
11
lights up red.
When the automatic levelling is switched off, the
measuring tool can be held by hand or placed on
an inclined surface. In cross-line operation, the
two laser lines do not necessarily run at a right
angle to each other.
Indica-
tion
Operating Mode
Cross-line operation
(see figures A,
B and E): The measuring tool gener-
ates a horizontal laser plane (360°
rotating laser line) and a vertical
laser line.
Horizontal operation
(see figure C):
The measuring tool generates a
horizontal laser plane.
Vertical operation
(see figure D):
The measuring tool generates a
vertical laser line.
OBJ_BUCH-979-002.book Page 13 Wednesday, December 9, 2009 12:50 PM
