Working Advice - Bosch DLE 40 Professional Originalbetriebsanleitung

OBJ_DOKU-39730-001.fm Page 15 Friday, June 27, 2014 11:40 AM
Subtracting Measured Values
Push the memory subtraction button 11 in order to subtract
the current measured value from the memory value. As soon
as a value has been subtracted, "M" is indicated in the display
and the "–" behind it briefly flashes.
If a value is already stored in the memory, the new measured
value can be subtracted only when the measures of unit corre-
spond (see "Storing/Adding Measured Values").
Displaying the Stored Value
Push the memory retrieve button 2
in order to display the value stored
in the memory. "M=" is indicated
in the display. When the memory
contents "M=" is indicated in the
display, it can be doubled by push-
ing the memory add button 3 or set
to zero by pushing the memory
subtract button 11.
Deleting the Memory
To delete the memory contents, first push the memory re-
trieve button 2, so that "M=" is indicated in the display. Then
briefly press button 13; "M" is no longer indicated in the dis-
play.

Working Advice

General Information
The reception lens 19 and the laser beam outlet 18 must not
be covered when taking a measurement.
The measuring tool must not be moved while taking a meas-
urement (with the exception of the continuous measurement
function). Therefore, place the measuring tool, as far as this is
possible, against or on the measuring points.
Measurement takes place at the centre of the laser beam,
even when target surfaces are sighted at an incline.
Influence Effects on the Measuring Range
The measuring range depends upon the light conditions and
the reflection properties of the target surface. For improved
visibility of the laser beam when working outdoors and when
the sunlight is intense, use the laser viewing glasses 21 (ac-
cessory) and the laser target plate 22 (accessory), or shade
off the target surface.
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements cannot be ex-
cluded 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).
If required, use the laser target plate 22 (accessory) on these
surfaces.
Also, air layers with varying temperatures or indirectly re-
ceived reflections can affect the measured value.
Bosch Power Tools
Sighting with the Alingment Aid (see figure E)
With the alignment aid 7, sighting over larger distances is a lot
easier. For this, look alongside the aligning aid on the top side
of the measuring tool. The laser beam runs parallel to this line
of sight.
Working with the Tripod (see figure C)
The use of a tripod is particularly necessary for larger distanc-
es. Position the measuring tool with the 1/4" thread 14 onto
the quick-change plate of the tripod 20 or a commercially
available camera tripod. Tighten the measuring tool with the
locking screw of the quick-change plate.
When positioning the tripod, observe that the measurement
will take place beginning from the rear or front edge of the
measuring tool, depending on the selected reference level.
Troubleshooting Causes and Corrective
–
Measures
Cause
Temperature warning indicator (b) flashing;
measurement not possible
The measuring tool is outside the
operating temperature range from
– 10 °C to + 50 °C (in the function
continuous measurement up to
+40 °C).
Battery low indicator (a) appears
Battery voltage decreasing
(measurement still possible).
Battery low indicator (a) flashing; measurement not
possible
Battery voltage too low
"Error" and "––––" indication in display
The angle between the laser beam
and the target is too acute.
The target surface reflects too
intensely (e.g. a mirror) or insuffi-
ciently (e.g. black fabric), or the
ambient light is too bright.
The laser beam outlet 18 or the re-
ception lens 19 are misted up
(e.g. due to a rapid temperature
change).
Calculated value is greater than
2 3
99999 m/m /m .
"Error" indication flashes at in display (top)
Addition/Subtraction of
measured values with different
units of measure
English | 15
Corrective Measure
Wait until the measuring
tool has reached the
operating temperature
Replace batteries
Replace batteries
Enlarge the angle
between the laser beam
and the target
Work with the laser
target plate 22
(accessory)
Wipe the laser beam out-
let 18 and/or the recep-
tion lens 19 dry using a
soft cloth
Divide calculation into
intermediate steps
Only add/subtract
measured values with
the same units of
measure
1 609 92A 0L7 | (27.6.14)