Bedienungsanleitung Bosch GLL 2-50 (Seite 14 von 239) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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14 | English

1 609 92A 0KJ | (6.5.14) Bosch Power Tools

Assembly

Inserting/Replacing the Batteries

Use only alkali-manganese batteries.

To open the battery lid 8, press the latch of the battery lid 11

in the direction of the arrow and remove the battery lid. Insert

the supplied batteries. When inserting, pay attention to the

correct polarity according to the representation on the inside

of the battery compartment.

When the battery indication 5 flashes red, the batteries must

be replaced.

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-dis-

charge.

Operation

Initial Operation

 Protect the measuring tool against moisture and direct

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-

ations in temperature, allow the measuring tool to adjust to

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.

 Avoid heavy impact or falling of the measuring tool. Af-

ter heavy exterior impact on the measuring tool, an accura-

cy check should always be carried out before continuing to

work (see “Levelling Accuracy”).

 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 7 to

the “on” position (when working without automatic level-

ling) or to the “on” position (when working with automat-

ic levelling). Immediately after switching on, the measuring

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.

To switch off the measuring tool, slide the On/Off switch 7 to

the “off” position. When switching off, the levelling unit is

locked.

Deactivating the Automatic Shut-off

The measuring tool switches off automatically after an operat-

ing duration of 30 minutes. To deactivate the automatic

switch-off, keep the operating mode button 4 pressed for 3 s

while switching on the measuring tool. When the automatic

switch-off is deactivated, the laser lines briefly flash after 3 s.

 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 measuring tool

off and then on again (without the operating mode button 4

pushed).

Operating Modes (see figures A–D)

The measuring tool has three operating modes between

which you can switch at any time:

– Horizontal operation “–”: Produces a horizontal laser line,

– Vertical operation “l”: Produces a vertical laser line,

– Cross-line operation “+”: Produces a horizontal and verti-

cal laser line.

After switching on, the measuring tool is in cross-line operat-

ing mode. To change the operating mode, press the operating

mode button 4.

All three operating modes can be selected either with or with-

out automatic levelling.

Pulse Function

When working with the laser receiver 21, the pulse function

must be activated, – independent of the selected operating

mode.

In pulse function, the laser lines flash at very high frequency

and thus become detectable by the laser receiver 21.

To switch on the pulse function, press button 3. When the

pulse function is switched on, the pulse-function indicator 2

lights up green.

When the pulse function is switched on, the visibility of the la-

ser lines is reduced for the human eye. Therefore, shut off the

pulse function by pushing button 3 again when working with-

out laser receiver. When the pulse function is switched off,

the pulse-function indicator 2 is deactivated.

Automatic Levelling

Working with Automatic Levelling (see figure C)

Position the measuring tool on a level and firm support or at-

tach it to a commercially available photographic tripod.

When working with automatic levelling, push the On/Off

switch 7 to the “ on” position.

After switching on, the levelling function automatically com-

pensates irregularities within the self-levelling range of ±4°.

The measuring tool is levelled in as soon as the laser lines no

longer flash.

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.

In this case, bring the measuring tool to the level position and

wait for the self-levelling to take place.

In case of ground vibrations or position changes during oper-

ation, the measuring tool is automatically 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

OBJ_BUCH-817-005.book Page 14 Tuesday, May 6, 2014 10:15 AM

Bosch GLL 2-50 Seite 14

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