Bosch PLR 50 Manual Original página 33

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OBJ_BUCH-946-002.book Page 33 Thursday, June 25, 2009 9:00 AM
Cause
"Error" indication flashes at in display (top)
Addition/Subtraction of
measured values with
different units of measure
Unreliable measuring result
The target surface does not
reflect correctly (e.g. water,
glass).
The laser beam outlet 19
or the reception lens 20 are
covered.
Measuring result not plausible
Wrong reference level set
Obstruction in path of laser
beam
The measuring tool monitors the correct func-
tion for each measurement. When a defect is
determined, only the symbol shown aside flash-
es in the display. In this case, or when the above
mentioned corrective measures cannot correct
an error, have the measuring tool checked by an after-sales
service agent for Bosch power tools.
Accuracy Check of the Measuring Tool
The accuracy of the measuring tool can be checked as follows:
– Select a permanently unchangeable measuring section with
a length of approx. 3 to 10 metres; its length must be pre-
cisely known (e.g. the width of a room or a door opening).
The measuring distance must be indoors; the target surface
for the measurement must be smooth and reflect well.
– Measure the distance 10 times after another.
The deviation of the individual measurements from the mean
value must not exceed ±3 mm (max.). Log the measurements,
so that you can compare their accuracy at a later point of time.
Bosch Power Tools
English | 33
Corrective Measure
Only add/subtract measured
values with the same units of
measure
Cover off the target surface
Make sure that the laser
beam outlet 19 or the recep-
tion lens 20 are unobstructed
Select reference level that
corresponds to measurement
Laser point must be com-
pletely on target surface.
2 609 140 621 | (25.6.09)