English | 13
Bosch Power Tools 1 609 92A 0KZ | (14.5.14)
Whenthebatteriesarelow,thebatterylowindicator3flashes
red. Additionally, the laser beams flash for approx. 5 s every
10 minutes. When the flashing initially begins, the measuring
tool can be operated for approx. 1 more hour. When the
batteriesbecome empty,thelaserbeams flash onemoretime
directly prior to the automatic shut-off.
Always replace all batteries at the same time. Only use batter-
ies from one brand and with the identical capacity.
Remove the batteries from the measuring tool when
not using it for extended periods. When storing for
extended periods, the batteries can corrode and self-
discharge.
Operation
Initial Operation
Protectthe measuring toolagainst moistureanddirect
sun light.
Do not subject the measuring tool to extreme tempera-
tures or variations in temperature. As an example, do
not leave it in vehicles for a long time. In case of large vari-
ationsin temperature, allow themeasuringtooltoadjustto
the ambient temperature before putting it into operation.
In case of extreme temperatures or variations in tempera-
ture, the accuracy of the measuring tool can be impaired.
Avoidheavyimpacttoor falling downofthemeasuring
tool. Damage to the measuring tool can impair its accura-
cy. After heavy impact or shock, compare the laser lines or
plumbbeamswitha known horizontalorvertical reference
line or with already checked plumb points.
Switch the measuring tool off during transport. When
switching off, the levelling unit, which can be damaged in
case of intense movement, is locked.
Switching On and Off
To switch on the measuring tool, slide the On/Off switch 4to
the “on”position (when working without automatic level-
ling) or to the “on”position (when working with auto-
matic levelling). Immediately after switching on, the measur-
ing tool sends laser beams out of the exit openings 1.
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.
Toswitchoffthe measuring tool, slide the On/Off switch 4to
the “off” position. When switching off, the levelling unit is
locked.
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 batteries.
To switch on the measuring tool after automatic shut-off, ei-
ther slide the On/Off switch 4to the “off” position and then
switch the measuring tool on again or press the operating
mode button 2once.
To deactivate the automatic shut-off, keep the operating
mode button 2pressed for at least 3 s (while the measuring
tool is switched on). Deactivation of the automatic shut-off is
confirmed by brief flashing of the laser beams.
Do not leave the switched-on measuring tool unattend-
ed 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 measuringtool
off and then on again.
Operating Modes
The measuring tool has several operating modes between
which you can switch at any time:
– Cross and point-line operation: The measuring tool gener-
ates a horizontal and a vertical laser line facing toward the
front as well as a vertical point beam each facing upward
and downward, and a horizontal point beam each facing
toward the front and to both sides.
– 5-point operation: The measuring tool generates a vertical
point beam each facing upward and downward, as well as
ahorizontalpoint beameachfacingtowardthe frontandto
both sides.
– Horizontal line operation: The measuring tool generates a
horizontal laser line facing frontward.
– Verticalline operation:Themeasuring toolgeneratesaver-
tical laser line facing frontward.
Allpoint beamsrunata 90° angletoeachother;thelaserlines
also cross each other ata 90° angle.
After switching on, the measuring tool is in cross-line and
point-line operation. To change the operating mode, press
the operating mode button 2.
All operating modes can be selected both with and without
automatic levelling.
Automatic Levelling
Working with Automatic Levelling (see figures C–E)
Positionthemeasuringtoolona level and firm support,attach
it to the holder 15 or to the tripod 16.
When working with automatic levelling, push the On/Off
switch 4to the “ on”position.
After switching on, the automatic levellingfunction automati-
callycompensatesirregularitieswithintheself-levellingrange
of ±4°. The levelling is finished as soon as the laser points or
laser lines do not move any more.
If the automatic levelling function is not possible, e.g.
because the surface on which the measuring tool stands
deviates by more than 4° from the horizontal plane, the laser
beams flash. This alarm is deactivated within 10 s after
switching on, in order to allow adjustment of the measuring
tool.
Set up the measuring tool in 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 laser beamslight up
continuously.
In case of ground vibrations or position changes during oper-
ation, the measuring tool is automatically levelled in again. To
avoiderrors by moving the measuringtool,checktheposition
of the laser beams with regard to the reference points upon
re-levelling.
OBJ_BUCH-1546-003.book Page 13 Wednesday, May 14, 2014 4:32 PM