Manual Bosch GRL 300 HVG Professional (page 24 of 351) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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24 | English

1 609 92A 0D9 | (24.3.14) Bosch Power Tools

Switching On and Off

 Do not direct the laser beam at persons or animals (es-

pecially not at their eye level), and do not stare into the

laser beam yourself (not even from a distance). Imme-

diately after switching on, the measuring tool sends out the

vertical plumb beam 9 and the variable laser beam 6.

–For switching on the measuring tool, press the On/Off

button 4. The indicators 1, 3 and 12 light up briefly. The

measuring tool immediately starts the automatic levelling.

During the levelling, the levelling indicator 3 lights up

green and the laser flashes in point operation.

The measuring tool is levelled in as soon as levelling indicator

3 lights up green continuously and the laser beam is steady.

After the levelling is completed, the measuring tool automati-

cally starts in rotational operation.

With the operating mode buttons 5 and 11, the operating

modes can already be specified during levelling in (see “Oper-

ating Modes of the Rotational Laser Level”, page 24). In this

case, the measuring tool starts in the set operating mode up-

on completion of levelling in.

–To switch off the measuring tool, press the On/Off button

4 again.

 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 save the batteries, the measuring tool is automatically

switched off when not within the self-levelling range for more

than 2 h or when the shock warning is actuated for more than

2 h (see “Automatic Levelling of the Rotational Laser Level”,

page 25). Reposition the measuring tool and switch it on

again.

Starting Operation of the Remote Control

 Protect the remote control against moisture and direct

sunlight.

 Do not subject the remote control to extreme tempera-

tures or variations in temperature. As an example, do

not leave it in vehicles for longer periods. In case of large

variations in temperature, allow the remote control to ad-

just to the ambient temperature before putting it into oper-

ation.

The remote control remains ready for operation as long as a

battery with sufficient voltage is inserted.

– Set up the measuring tool in such a manner that the signals

of the remote control can directly reach one of the recep-

tion lenses 7. When the remote control cannot be pointed

directly against a reception lens, the working range is re-

duced. By reflecting the signal (e.g. against walls), the

working range can be improved, even for indirect signals.

After pressing a button on the remote control, the illuminated

operation indicator 30 indicates that a signal was sent out.

Switching the measuring tool on/off with the remote control is

not possible.

Operating Modes of the Rotational Laser Level

Overview

All three operating modes are possible with the measuring

tool in horizontal and vertical position.

Rotational Operation

Rotational operation is especially recom-

mended when using the laser receiver.

You can select between different rota-

tional speeds.

Line Operation

In this operation mode, the variable laser

beam moves within a limited aperture an-

gle. This increases the visibility of the la-

ser beam in comparison to rotational op-

eration. You can select between different

aperture angles.

Point Operation

This operation mode enables the best vis-

ibility of the variable laser beam. As an ex-

ample, it is used for easy projecting of

heights or checking building lines.

Rotational Operation (150/300/600 min

-1

)

Each time after switching on, the measuring tool is in rotation-

al operation mode with average rotational speed.

– To switch from line operation to rotational operation, press

the rotational operation button 5 or button 25 on the re-

mote control. Rotational operation starts with average ro-

tational speed.

– To change the rotational speed, press the rotational oper-

ation button 5 or button 25 again until the requested

speed is reached.

When working with the laser receiver, the highest rotational

speed should be set. When working without laser receiver, re-

duce the rotational speed for improved visibility of the laser

beam and use the laser viewing glasses 38.

Line Operation, Point Operation

(10°/25°/50°, 0°)

– To switch to line or point operation, press the line opera-

tion button 11 or button 26 on the remote control. The

measuring tool switches to line operation with the smallest

aperture angle.

– To change the aperture angle, press the line operation but-

ton 11 or button 26 on the remote control. The aperture

angle is increased in two steps; at the same time, the rota-

tional speed is increased with each step. When pressing

the line operation button a third time, the measuring tool

switches to point operation after brief post-pulsation.

OBJ_BUCH-757-008.book Page 24 Monday, March 24, 2014 11:19 AM

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Bosch GRL 300 HVG Professional Manual

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