Bosch BL 200 GC Professional - Manual (Page 27)

English | 27
Bosch Power Tools 1 609 929 L80 | (26.7.07)
Stand-by-operation with Storage of the
Operating Mode
The measuring tool can be switched to stand by
for a maximum of 24 hours. When the automatic
levelling was activated (“auto” indicator 26
lights up continuously) prior to the beginning of
the stand by operation, the automatic levelling
continues to monitor the position of the measur-
ing tool. The operating mode on the measuring
tool is retained.
To activate stand by operation, press the line
operation pushbutton 19 for at least 5 seconds.
In stand by, the laser beam and the levelling in-
dicators go out; only the battery charge control
indicator 27 flashes once every 5 seconds.
To switch from stand by operation to normal op-
eration, press the line operation pushbutton 19
again for at least 5 seconds. The measuring tool
starts in the same operating mode as it was pri-
or to the stand by. When the position of the
measuring tool is changed as compared to the
starting position prior to stand by, the automat-
ic levelling reacts as if the out-of-level safety
(see “Out-of-level Safety”) were activated: Ei-
ther the laser beam can be self-levelled to the
same height as before the stand by or the laser
beam is switched off as a protective measure
against vertical errors.
Operating Modes
Overview
All three operating modes are possible with the
measuring tool in horizontal and vertical position.
Rotational Operation
Rotational operation is especial-
ly recommended when working
with the receiver 38. Four differ-
ent rotation speeds can be se-
lected.
Line Operation
In this operating mode, the varia-
ble laser beam moves within a
defined aperture angle. This in-
creases the visibility of the laser
beam as when compared to rota-
tional operation. Four different
aperture angles are available.
Point Operation
In this operating mode, the best
visibility of the variable laser
beam is achieved. It is used, e.g.,
for easy projecting of heights or
for checking building lines.
Course of X- and Y-axis
The X- and Y-axis are at a right angle to each oth-
er, in accordance with the marks 7 and 6 on the
housing. The marks are exactly above the plumb
notches 10 (X-axis) and 11 (Y-axis) at the bot-
tom edge of the housing.
Making Use of the Operating Modes
Turning the Rotational Plane in the
Vertical Position
When the measuring tool is in the vertical posi-
tion, the laser point, the laser line or the rota-
tional plane can be rotated around the Y-axis for
basic sighting out or parallel alignment. For this,
press the left 21 or right 24 direction pushbut-
ton.
Rotation is only possible within the self-levelling
range (8 % to the left or right). When the meas-
uring tool reaches the limit of this range, a warn-
ing signal sounds, the laser and the “man” 25
and “auto” 26 indicators flash once per second.
Either press the opposite direction pushbutton
(21 or 24), or switch the measuring tool off in
order to reposition it.
Rotational Operation
After switching on, the measuring tool is in rota-
tional operation. It starts with the highest rota-
tional speed.
By pressing the pushbutton for rotational oper-
ation 22, the speed can be reduced to a stand-
still (point operation) in four steps. Repeated
pressing of the pushbutton 22 starts the rota-
tional operation again at the highest speed.
When working with the receiver 38, it is recom-
mended to select the highest rotational speed.
When working without the receiver, reduce the
rotational speed for improved visibility of the la-
ser beam or use the laser viewing glasses 31 (ac-
cessory).
OBJ_BUCH-78-004.book Page 27 Thursday, July 26, 2007 2:04 PM