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Инструкция по эксплуатации Страница: 8

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gll 5-50
Инструкция по эксплуатации Страница: 8

Bosch gll 5-50 — инструкция по использованию измерительного инструмента с лазером [8/46]

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Bosch gll 5-50 [8/46] Operation modes see figures b d

8 | English

1 609 92A 0MH | (16.5.14) Bosch Power Tools

Deactivating the Automatic Shut-off

The measuring tool automatically switches itself off after

30 minutes of operation. To deactivate the automatic shut-

off, hold down either the vertical mode button 18 or the hori-

zontal mode button 19 for 3 seconds when switching on the

measuring tool. The laser lines will flash briefly after 3 sec-

onds if the automatic shut-off is deactivated.

 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 on again (without holding down a button).

Operation Modes (see figures B–D)

The horizontal and vertical modes can be switched on and off

independently of each other. All operation modes can be used

both with and without automatic levelling.

Horizontal operation

After it has been switched on, the measuring tool is in horizon-

tal mode and emits a horizontal laser line forwards.

To switch the horizontal laser line off or on, press the horizon-

tal mode 19 button.

Vertical mode and plumb point

The measuring tool has multiple vertical operation modes:

– vertical laser line forwards

– vertical laser line forwards and to the left-hand side

– vertical laser line forwards and backwards

– vertical laser lines to all four sides

A plumb point is additionally projected downwards in all ver-

tical operation modes.

To switch the vertical mode on/off or to change the vertical

operation mode, press the vertical mode 18 button repeated-

ly until the required operation mode is reached.

If the measuring tool is mounted on the rotating platform 12,

you can precisely align the vertical laser lines to reference

points using the fine adjustment knob 11.

Pulse Function

When working with the laser receiver 25, 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 25.

To switch on the pulse function, press button 17. When the

pulse function is switched on, the pulse-function indicator 15

lights up red.

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

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

the pulse function by pushing button 17 again when working

without laser receiver. When the pulse function is switched

off, the pulse-function indicator 15 is deactivated.

Automatic Levelling

Working with Automatic Levelling

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

it to the rotating platform 12.

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 ±3°.

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 3°

from the horizontal plane, the laser lines will begin to flash

quickly.

Set up the measuring tool in a level position and wait for the

self-levelling to take place. As soon as the measuring tool is

within the self-levelling range of ±3°, the laser lines will light

up continuously.

In case of ground vibrations or position changes during oper-

ation, the measuring tool is automatically levelled again. Upon

re-levelling, check the position of the laser lines with regard to

the reference points to avoid errors.

Working without Automatic Levelling

For work without automatic levelling, slide the on/off switch 7

to the “On” position. When automatic levelling is switched

off, the indicator 14 lights up red and the laser lines continu-

ously 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.

As thermal fluctuation is largest close to the ground, the

measuring tool, if possible, should be mounted on the tripod

21 and placed in the centre of the working 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.

First check the height accuracy and levelling accuracy of the

horizontal laser line, 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 Height Accuracy of the Horizontal Line

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 close to wall A on the rotating

platform or a tripod, or place it on a firm, flat surface.

Switch on the measuring tool in the mode with automatic

levelling. Switch on horizontal mode and any vertical oper-

ation mode.

OBJ_BUCH-2195-001.book Page 8 Friday, May 16, 2014 2:18 PM

Bosch gll 5-50 — инструкция по использованию измерительного инструмента с лазером [8/46]

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