Hilti DCH 300 Handbuch Seite 38

Trouble or fault
The power tool doesn't start
or switches itself off.
The service indicator blinks.
The power tool doesn't start.
The service indicator lights.
The power tool doesn't start.
The tool doesn't achieve full
power.
9 Disposal
Most of the materials from which Hilti products are manufactured can be recycled. The materials must be
correctly separated before they can be recycled. In many countries, your old tools, machines or appliances
can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative for further information.
In accordance with the European Directive on waste electrical and electronic equipment and its implemen-
tation in conformance with national law, electric tools or appliances that have reached the end of their life
must be collected separately and returned to an environmentally compatible recycling facility.
▶ Disposal of electric tools or appliances together with household waste is not permissible.
Cutting slurry
The disposal of cutting slurry directly into rivers, lakes or the sewerage system without suitable pretreatment
presents problems of an environmental nature.
▶ Ask the local public authorities for information about current regulations.
We recommend the following pretreatment:
▶ Collect the cutting slurry (for example, using a wet-type vacuum cleaner).
▶ Allow the slurry to stand for some time or add a flocculation agent to help the fine particles in the cutting
slurry settle and separate from the water.
▶ Dispose of this solid portion of the waste at a construction waste disposal location.
▶ Neutralize the remaining water from the cutting slurry (alkaline, pH-value > 7) by adding an acidic
neutralizing agent or dilute it by adding a large quantity of water before allowing it to enter the sewerage
system.
32 English
Printed: 08.02.2018 | Doc-Nr: PUB / 5398318 / 000 / 01
Possible cause
Interruption in the electric supply.
The portable residual current de-
vice (PRCD) has tripped because
of water ingress into the power
tool.
The supply cord or plug is defec-
tive.
The on / off switch is defective.
The power tool has been
overloaded (overload protection
activated / application limits
exceeded).
The overheating protection system
is active.
The restart interlock is active after
disconnection or an interruption in
the electric supply.
The power tool is faulty.
The carbon brushes are worn.
The extension cord conductor
cross section is too small.
Action to be taken
▶ Check the electric supply
by connecting a different
appliance.
▶ Leave the power tool in a warm,
dry place until it has thoroughly
dried.
▶ Check the portable residual
current device. → page 28
▶ Have the supply cord and plug
checked by a trained electrical
specialist and replaced if
necessary.
▶ Have the power tool repaired by
Hilti Service.
▶ Release the on/off switch and
then press it again.
▶ Select a suitable power tool for
the application.
▶ Allow the power tool to cool
down and clean the air vents.
▶ Switch the power tool off and
then on again.
▶ Have the power tool repaired by
Hilti Service.
▶ Have the carbon brushes
checked by a trained electrical
specialist and replaced if
necessary.
▶ Use an extension cord with
conductors of adequate cross
section.
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