are damaged or when the controls do not function
faultlessly. If necessary, the power tool should be
repaired by Hilti Service.
en
9. Troubleshooting
Fault
The power tool
doesn't start.
No hammering
action.
The power tool
doesn't achieve full
power.
The chisel can't be
released from the
chuck.
10. Disposal
Most of the materials from which Hilti tools or machines are manufactured can be recycled. The materials must
be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements
for taking back your old tools for recycling. Please ask your Hilti customer service department or Hilti
representative for further information.
10
Printed: 07.07.2013 | Doc-Nr: PUB / 5070791 / 000 / 00
Possible cause
Interruption in the electric supply.
The supply cord or plug is defective.
Other electrical fault.
The carbon brushes are worn.
The power tool is too cold.
The extension cord's conductor cross
section is inadequate.
The control switch is not pressed fully.
The chuck is not pulled back fully.
8.4 Checking the power tool after care and
maintenance
After carrying out care and maintenance work on
the power tool, check that all protective and safety
devices are fitted and that they function faultlessly.
Remedy
Plug in another electric appliance and
check whether it works.
Have the supply cord and plug checked
by an electrical specialist and replaced if
necessary.
Have it checked by a trained electrical
specialist.
Have the supply cord and plug checked
by an electrical specialist and replaced if
necessary.
Allow the power tool to warm up to the
minimum operating temperature.
See section: 7.2.1 Chiseling 6
Use an extension cord with an adequate
conductor cross section. (Please refer to
"Before use".)
Press the control switch as far as it will
go.
Pull the chuck back as far as it will go and
remove the insert tool.