Bosch DLE 40 Professional Operations Instructions download pdf (Page 15)

26 | English

1 609 929 R53 | (23.7.08) Bosch Power Tools

Troubleshooting – Causes and

Corrective Measures

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-

tioned 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 measur-

ing section with a length of approx. 3 to

10 metres; its length must be precisely

known (e.g. the width of a room or a door

opening). The measuring distance must be

indoors; the target surface for the measure-

ment must be smooth and reflect well.

– 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

the measurements in order to compare the ac-

curacy at a later time.

Cause Corrective

Measure

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).

Wait until the

measuring tool

has reached the

operating temper-

ature

Battery indication (b) is indicated

Battery voltage decreas-

ing (measurement still

possible)

Replace batteries

Battery indication (b) flashes, measurement

not possible

Battery voltage too low Replace batteries

“Error” and “

––––” indication in display

The angle between the

laser beam and the target

is too acute.

Enlargen the angle

between the laser

beam and the

target

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.

Work with the

laser target plate

25 (accessory)

The laser beam outlet 21

or the reception lens 22

are misted up (e.g. due to

a rapid temperature

change).

Wipe the laser

beam outlet 21

and/or the recep-

tion lens 22 dry

using a soft cloth

Calculated value is great-

er than 99999 m/m

2

/m

3

.

Divide calculation

into intermediate

steps

“Error” indication flashes at in display (top)

Addition/Subtraction of

measured values with dif-

ferent units of measure

Only add/subtract

measured values

with the same

units of measure

Unreliable measuring result

The target surface does

not reflect correctly

(e.g. water, glass).

Cover off the

target surface

The laser beam outlet 21

or the reception lens 22

are covered.

Make sure that the

laser beam outlet

21 or the recep-

tion lens 22 are

unobstructed

Measuring result not plausible

Wrong reference level set Select reference

level that corre-

sponds to meas-

urement

Obstruction in path of

laser beam

Laser point must

be completely on

target surface.

Cause Corrective

Measure

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