Operating Instruction DCH 300 / DCH 300-X (01)

*2149877*
2149877 English 15
Trouble or fault Possible cause Action to be taken
The service indicator blinks.
The power tool doesn’t start.
The power tool is faulty. ▶ Have the power tool repaired by
Hilti Service.
The service indicator lights.
The power tool doesn’t start.
The carbon brushes are worn. ▶ Have the carbon brushes
checked by a trained electrical
specialist and replaced if
necessary.
The tool doesn’t achieve full
power.
The extension cord conductor
cross section is too small.
▶ Use an extension cord with
conductors of adequate cross
section.
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.
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.
10 Manufacturer’s warranty
▶
Please contact your local Hilti representative if you have questions about the warranty conditions.
Printed: 23.10.2018 | Doc-Nr: PUB / 5459266 / 000 / 00