User manual

20 | English
2 609 140 991 | (13.5.13) Bosch Power Tools
Working Advice
General Information
The reception lens 8 and the laser beam outlet 9 must not be covered
when taking a measurement.
Measurement takes place at the centre of the laser beam, even when tar-
get surfaces are sighted at an incline.
Influence Effects on the Measuring Range
The measuring range depends on the light conditions and the reflection
properties of the target surface.
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements cannot be excluded when
measuring on different surfaces. Included here are:
– Transparent surfaces (e.g., glass, water),
– Reflecting surfaces (e.g., polished metal, glass),
– Porous surfaces (e.g. insulation materials),
– Structured surfaces (e.g., roughcast, natural stone).
Also, air layers with varying temperatures or indirectly received reflec-
tions can affect the measured value.
Troubleshooting – Causes and Corrective Measures
Cause Corrective Measure
Temperature warning indicator (b) flashing; measurement not pos-
sible
Measuring tool not within the operat-
ing temperature range between
–10°C and +40°C.
Wait until the measuring tool has
reached the operating tempera-
ture
Battery low indicator (a) appears
Battery voltage decreasing (measure-
ment still possible).
Replace batteries
Battery low indicator (a) flashing; measurement not possible
Battery voltage too low Replace batteries
All indicators on the display flash
The measuring tool is defective. Contact the Customer Service
OBJ_BUCH-1900-001.book Page 20 Monday, May 13, 2013 11:40 AM