Bosch LR Professional 1 Original Instructions Manual page 17

OBJ_BUCH-780-004.book Page 17 Friday, July 15, 2011 10:29 AM
Position the measuring tool at least 50 cm away from the rotational laser level. Posi-
tion the measuring tool in such a manner that the laser beam can reach the reception
area 6. Set the highest rotational speed on the rotational laser level.
Switching On and Off
A loud audio signal sounds when switching on the measuring tool. "At a dis-
tance of 0.2 m, the A-weighted sound pressure level of the audio signal can be up
to 95 dB(A)."
Do not hold the measuring tool close to your ear! The loud audio signal can
cause hearing defects.
To switch on the measuring tool, press the On/Off button 1. Two audio signals sound
and all display indicators light up briefly.
To switch off the measuring tool, press the On/Off button 1 again.
When no button is pressed on the measuring tool for approx. 10 minutes and when no
laser beam reaches the reception area 6 for 10 minutes, the measuring tool automat-
ically switches off in order to save the battery. The switching off is indicated by an
audio signal.
Selecting the Setting of the Centre Indicator
With button 2, you can specify with which accuracy the position of the laser beam is
indicated as central on the reception area:
– "Fine" adjustment, (indication g on the display),
– "Medium" adjustment, (indication b on the display).
An audio signal sounds when the accuracy setting is changed.
Whenever switching on the measuring tool, the accuracy level "medium" is set.
Direction Indicators
The bottom a, centre f and top d indicators (both on the front and rear side of the
measuring tool) indicate the position of the rotating laser beam in the reception area
6. Additionally, the position can be indicated with an audio signal (see "Audio Signal
for Indication of the Laser Beam", page 18).
Measuring tool too low: When the laser beam runs through the top half of the recep-
tion area 6, the bottom direction indicator a appears on the display.
When the audio signal is switched on, a slow-beat signal sounds.
Move the measuring tool upward in the direction of the arrow. When approaching the
centre mark 5, only the tip of the direction indicator a is indicated.
Measuring tool too high: When the laser beam runs through the bottom half of the
reception area 6, the top direction indicator d appears on the display.
When the audio signal is switched on, a fast-beat signal sounds.
Move the measuring tool downward in the direction of the arrow. When approaching
the centre mark 5, only the tip of the direction indicator d is indicated.
Bosch Power Tools
English | 17
2 610 A12 917 | (15.7.11)