Bedienungsanleitung Bosch GLL 3-80 P (Seite 14 von 220) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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14 | English

1 609 92A 0KL | (12.5.14) Bosch Power Tools

To deactivate the automatic shut-off, keep the operating

mode button 5 pressed 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.

To activate the automatic shut-off, switch the measuring tool

off and then on again or press and hold the operating mode

button 5 for at least 3 s.

Deactivating the Signal Tone

After the measuring tool has been switched on, the audio sig-

nal is always activated.

To deactivate/activate the audio signal, press and hold the

operating mode button 5 and the pulse-function button 3 at

the same time for at least 3 s.

The audio signal activation and deactivation are both con-

firmed by three short beeps.

Operating Modes

The measuring tool has several operating modes between

which you can switch at any time. These are for:

– Generating a horizontal laser plane,

– Generating a vertical laser plane,

– Generating two vertical laser planes,

– Generating a horizontal laser plane as well as two vertical

laser planes.

After switching on, the measuring tool generates a horizontal

laser plane. To change the operating mode, press the operat-

ing mode button 5.

All operating modes can be selected both with and without au-

tomatic levelling.

Pulse Function

When working with the laser receiver 17, 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 17.

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

pulse function is switched on, the pulse-function indicator 4

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 4 is deactivated.

Automatic Levelling

Working with Automatic Levelling

Position the measuring tool on a level and firm support, attach

it to the holder 19 or to the tripod 22.

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 levelling is finished as soon as the laser beams do not

move any more.

If automatic levelling 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 lines begin to flash rapid-

ly. When the audio signal is activated, a fast-beat signal

sounds for 30 s (maximum). 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°, all laser beams light up

continuously and the audio signal is switched off.

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-level-

ling.

Working without Automatic Levelling

For working without automatic levelling, slide the On/Off

switch 7 to the “ on” position. When automatic levelling is

switched off, indicator 6 lights up red and for the first 30 s

laser beams flash slowly.

When automatic levelling is switched off, you can hold the

measuring tool freely in your hand or place it on an inclined

surface. The laser lines no longer necessarily run perpendicu-

lar to each other.

Levelling Accuracy

Influences on Accuracy

The ambient temperature has the greatest influence. Espe-

cially temperature differences occurring from the ground up-

ward can divert the laser beam.

Because the largest difference in temperature layers is close

to the ground, the measuring tool should always be mounted

on a tripod when measuring distances exceeding 20 m. If pos-

sible, also set up the measuring tool in the centre of the work

area.

Apart from exterior influences, device-specific influences

(such as heavy impact or falling down) can lead to deviations.

Therefore, check the accuracy of the measuring tool each

time before starting your work.

Firstly, check the levelling accuracy of the horizontal laser line

and then the levelling accuracy of the vertical laser lines.

Should the measuring tool exceed the maximum deviation

during one of the tests, please have it repaired by a Bosch af-

ter-sales service.

Checking the Horizontal Levelling Accuracy of the Lateral

Axis

For this check, a free measuring distance of 5 m on a firm sur-

face between two walls A and B is required.

– Mount the measuring tool onto a tripod, or place it on a firm

and level surface close to wall A. Switch on the measuring

tool to operation with automatic levelling. Select the oper-

ating mode in which a horizontal laser plane as well as a

vertical laser plane in front of the measuring tool are gener-

ated.

OBJ_DOKU-32907-002.fm Page 14 Monday, May 12, 2014 12:52 PM

Bosch GLL 3-80 P Seite 14

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