18
| English
1 609 929 S04 | (30.6.09)
Bosch Power Tools
Switching On and Off
To
switch on
the measuring tool, slide the
On/Off switch
7
to the
“ on”
position (when
working without automatic levelling) or to the
“
on”
position (when working with automatic
levelling). Immediately 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
7
to the
“off”
position. When
switching off, the levelling unit is locked.
When exceeding the maximum permitted oper-
ating temperature of 45 °C, the measuring tool
switches off to protect the laser diode. After
cooling down, the measuring tool is ready for
operation and can be switched on again.
Deactivating the Automatic Shut-off
When no button on the measuring tool is
pressed for approx. 30 minutes, the measuring
tool automatically switches off to save the bat-
teries.
To switch on the measuring tool after automatic
shut-off, either slide the On/Off switch
7
to the
“off”
position and then switch the measuring
tool on again or press the operating mode but-
ton
4
once or press the pulse-function button
3
once.
To deactivate the automatic shut-off, keep the
operating mode button
4
pressed for at least 3 s
(while the measuring tool is switched on). Deac-
tivation of the automatic shut-off is confirmed
by brief flashing of the laser beams.
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.
To activate the automatic shut-off, switch the
measuring tool off and then on again or press
and hold the operating mode button
4
for at
least 3 s.
Deactivating the Signal Tone
After the measuring tool has been switched on,
the audio signal is always activated.
To deactivate/activate the audio signal, press
and hold the operating mode button
4
and the
pulse-function button
3
at the same time for at
least 3 s.
The audio signal activation and deactivation are
both confirmed by three short beeps.
Operating Modes
The measuring tool has three operating modes
between which you can switch at any time:
– Horizontal operation: generates a horizontal
laser plane,
– Vertical operation: generates a vertical laser
plane,
– Cross-line operation: generates a horizontal
and vertical laser plane.
After switching on, the measuring tool is in hor-
izontal operation. Press the operating mode
button
4
to change the operating mode.
All three operating modes can be selected either
with or without automatic levelling.
Pulse Function
When working with the laser receiver
17
, the
pulse function must be activated, – independ-
ent of the selected operating mode.
In pulse function, the laser lines flash at very
high frequency and thus become detectable by
the laser receiver
17
.
To switch on the pulse function, press button
3
.
When the pulse function is switched on, the
pulse-function indicator
5
lights up green.
When the pulse function is switched on, the vis-
ibility of the laser lines is reduced for the human
eye. Therefore, shut off the pulse function by
pushing button
3
again when working without
laser receiver. When the pulse function is
switched off, the pulse-function indicator
5
is
deactivated.
OBJ_BUCH-907-001.book Page 18 Tuesday, June 30, 2009 2:32 PM
