Inserting/Replacing The Battery; Initial Operation - Bosch Professional GLL 2 Manual Original

OBJ_BUCH-1236-001.book Page 16 Thursday, May 20, 2010 12:18 PM
16 | English
Assembly

Inserting/Replacing the Battery

Alkali-manganese batteries are recommended
for the measuring tool.
To open the battery lid 7, press the latch of the
battery lid 6 in the direction of the arrow and re-
move the battery lid. Insert the supplied batter-
ies. When inserting, pay attention to the correct
polarity according to the representation on the
inside of the battery compartment.
When the batteries become weak, the laser
beams flash rapidly for about 5 s (while the
measuring tool is switched on).
Always replace all batteries at the same time.
Only use batteries 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 batter-
ies can corrode and discharge themselves.
Operation

Initial Operation

Protect the measuring tool against mois-
ture and direct sun light.
Do not subject the measuring tool to ex-
treme temperatures or variations in tem-
perature. As an example, do not leave it in
vehicles for longer periods. In case of large
variations in temperature, allow the measur-
ing tool to adjust to the ambient temperature
before putting it into operation. In case of ex-
treme temperatures or variations in tempera-
ture, the accuracy of the measuring tool can
be impaired.
Avoid heavy impact or falling of the measur-
ing tool. After heavy exterior impact on the
measuring tool, an accuracy check should
always be carried out before continuing to
work (see "Levelling Accuracy").
Switch the measuring tool off during trans-
port. When switching off, the levelling unit,
which can be damaged in case of intense
movement, is locked.
1 609 929 W91 | (20.5.10)
Switching On and Off
To switch on the measuring tool, push the
On/Off switch 3 to the "On" position. Immedi-
ately after switching on, the measuring tool
sends two laser beams out of the exit opening 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 3 to the "Off" position. When
switching off, the levelling unit is locked.
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.
The measuring tool switches off automatically
after an operating duration of 30 minutes.
Working with Automatic Levelling
Position the measuring tool on a level and
firm support, attach it to the holder 8 or to the
tripod 18.
After switching on, the levelling function auto-
matically compensates irregularities within the
self-levelling range of ±4°. The levelling is fin-
ished as soon as the laser beams do not move
any more.
If the automatic levelling function is not possi-
ble, e.g. because the surface on which the
measuring tool stands deviates by more than 4°
from the horizontal plane, the laser beams flash
slowly. In this case, bring the measuring tool to
the 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°, the laser
lines light up continuously again.
In case of ground vibrations or position changes
during operation, the measuring tool is automat-
ically 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.
Bosch Power Tools