Bosch GLL2-50 Operating/s Operations Instructions download pdf (Page 8)

18 | English

1 609 929 S04 | (30.6.09) Bosch Power Tools

Switching On and Off

To switch on the measuring tool, slide the

On/Off switch 7 to the “on” position (when

working without automatic levelling) or to the

“on” position (when working with automatic

levelling). Immediately after switching on, the

measuring tool sends laser beams out of the exit

openings 1.

f 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.

When exceeding the maximum permitted oper-

ating temperature of 45 °C, the measuring tool

switches off to protect the laser diode. After

cooling down, the measuring tool is ready for

operation and can be switched on again.

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 bat-

teries.

To switch on the measuring tool after automatic

shut-off, either slide the On/Off switch 7 to the

“off” position and then switch the measuring

tool on again or press the operating mode but-

ton 4 once or press the pulse-function button 3

once.

To deactivate the automatic shut-off, keep the

operating mode button 4 pressed for at least 3 s

(while the measuring tool is switched on). Deac-

tivation of the automatic shut-off is confirmed

by brief flashing of the laser beams.

f Do not leave the switched on measuring

tool unattended 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 or press

and hold the operating mode button 4 for at

least 3 s.

Deactivating the Signal Tone

After the measuring tool has been switched on,

the audio signal is always activated.

To deactivate/activate the audio signal, press

and hold the operating mode button 4 and the

pulse-function button 3 at the same time for at

least 3 s.

The audio signal activation and deactivation are

both confirmed by three short beeps.

Operating Modes

The measuring tool has three operating modes

between which you can switch at any time:

– Horizontal operation: generates a horizontal

laser plane,

– Vertical operation: generates a vertical laser

plane,

– Cross-line operation: generates a horizontal

and vertical laser plane.

After switching on, the measuring tool is in hor-

izontal operation. Press the operating mode

button 4 to change the operating mode.

All three operating modes can be selected either

with or without automatic levelling.

Pulse Function

When working with the laser receiver 17, the

pulse function must be activated, – independ-

ent 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 5 lights up green.

When the pulse function is switched on, the vis-

ibility of the laser lines is reduced for the human

eye. Therefore, shut off the pulse function by

pushing button 3 again when working without

laser receiver. When the pulse function is

switched off, the pulse-function indicator 5 is

deactivated.

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