Initial Operation - Bosch PLR 50 Manual Original

OBJ_BUCH-946-004.book Page 20 Tuesday, July 29, 2014 4:02 PM
20 | English
Operation

Initial Operation

 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.
 Protect the measuring tool against moisture and direct sun light.
 Do not subject the measuring tool to extreme temperatures or varia-
tions in temperature. As an example, do not leave it in vehicles for longer
periods. In case of large variations in temperature, allow the measuring tool
to adjust to the ambient temperature before putting it into operation.
 Avoid heavy impact to or falling down of the measuring tool. After severe
exterior effects to the measuring tool, it is recommended to carry out an ac-
curacy check (see "Accuracy Check of the Measuring Tool", page 25) each
time before continuing to work.
Switching On and Off
To switch on the measuring tool, briefly press the On/Off button 7 or measuring
button 12. When switching on the measuring tool, the laser beam is not
switched on yet.
To switch off the measuring tool, press the On/Off button 7 for a few seconds.
If none of the measuring tool buttons are pressed for approx. 5 minutes, the
measuring tool switches off automatically in order to extend the service life of
the battery.
When a measured value has been stored, it is retained in automatic switch-off
mode. When switching on the measuring tool again, "M" is indicated in the dis-
play.
Measuring Procedure
After switching on, the measuring tool is in the length measurement mode. Oth-
er measuring modes can be switched to by pressing the respective func-
tion/mode button (see "Measuring Functions", page 21).
After switching on, the rear edge of the measuring tool is preset as the reference
level for the measurement. To change the reference level, see "Selecting the
Reference Level (see figures A–C)", page 21.
Upon selection of the measuring function and the reference level, all further
steps are carried out by pushing the measuring button 12.
With the reference level selected, place the measuring tool against the desired
measuring line (e.g. a wall).
Push the measuring button 12 to switch on the laser beam.
 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.
Aim the laser beam at the target surface. Push the measuring button 12 again to
initiate the measurement.
In the tracking function, the measurement already starts upon first actuation of
the measuring button 12.
The measured value typically appears after 0.5 seconds and at the latest after 4
seconds. The duration of the measurement depends on the distance, the light
conditions and the reflection properties of the target surface. The end of the
measurement is indicated by a signal tone. The laser beam is switched off auto-
matically upon completion of the measurement.
When no measurement has taken place approx. 20 seconds after sighting, the
laser beam is switched off automatically to save the batteries.
1 609 92A 0K1 | (29.7.14) Bosch Power Tools