Bosch Professional DLE 70 Manual Original página 26

OBJ_BUCH-703-002.book Page 26 Wednesday, July 23, 2008 3:15 PM
26 | English
Troubleshooting Causes and
–
Corrective Measures
Cause
Temperature indicator (c) flashes; measure-
ment not possible
The measuring tool is out-
side the operating tem-
perature range from
– 10 °C to + 50 °C (in the
function continuous
measurement up to
+40 °C).
Battery indication (b) is indicated
Battery voltage decreas-
ing (measurement still
possible)
Battery indication (b) flashes, 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 mir-
ror) or insufficiently (e.g.
black fabric), or the ambi-
ent light is too bright.
The laser beam outlet 21
or the reception lens 22
are misted up (e.g. due to
a rapid temperature
change).
Calculated value is great-
2 3
er than 99999 m/m /m .
"Error" indication flashes at in display (top)
Addition/Subtraction of
measured values with dif-
ferent units of measure
1 609 929 R53 | (23.7.08)
Cause
Unreliable measuring result
Corrective
The target surface does
Measure
not reflect correctly
(e.g. water, glass).
The laser beam outlet 21
Wait until the
or the reception lens 22
measuring tool
are covered.
has reached the
operating temper-
ature
Measuring result not plausible
Wrong reference level set Select reference
Replace batteries
Obstruction in path of
laser beam
Replace batteries
Enlargen the angle
between the laser
beam and the
tioned corrective measures cannot correct an
target
error, have the measuring tool checked by an
Work with the
after-sales service agent for Bosch power tools.
laser target plate
25 (accessory)
Accuracy Check of the Measuring Tool
The accuracy of the measuring tool can be
checked as follows:
Wipe the laser
– Select a permanently unchangeable measur-
beam outlet 21
ing section with a length of approx. 3 to
and/or the recep-
10 metres; its length must be precisely
tion lens 22 dry
known (e.g. the width of a room or a door
using a soft cloth
opening). The measuring distance must be
Divide calculation
indoors; the target surface for the measure-
into intermediate
ment must be smooth and reflect well.
steps
– Measure the distance 10 times after another.
The measuring error must not amount to more
than a maximum of ± 2.0 mm. Keep a record of
Only add/subtract
measured values the measurements in order to compare the ac-
with the same curacy at a later time.
units of measure
Corrective
Measure
Cover off the
target surface
Make sure that the
laser beam outlet
21 or the recep-
tion lens 22 are
unobstructed
level that corre-
sponds to meas-
urement
Laser point must
be completely on
target surface.
The measuring tool monitors the
correct function for each meas-
urement. When a defect is deter-
mined, only the symbol shown
aside flashes in the display. In this
case, or when the above men-
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