20
English
2064795
*2064795*
Trouble or fault
Possible cause
Action to be taken
The power tool doesn’t start
and the service indicator
lights red.
The carbon brushes are worn.
▶
Have the parts checked by a
trained electrical specialist and
replaced if necessary.
A fault has occurred in the tool.
▶
Have the tool repaired by
Hilti
Service.
No hammering action.
The power tool is too cold.
▶
Bring the tip of the drill bit
or chisel into contact with the
workpiece and allow the power
tool to run under no load until it
reaches the minimum operating
temperature.
A fault has occurred in the tool.
▶
Have the tool repaired by
Hilti
Service.
The power tool doesn’t start.
Electronics initialization in progress
(takes up to 1 second after plug-
ging in) or the electronic restart
safety interlock has been activated
after an interruption in the electric
supply.
▶
Switch the power tool off and
then on again.
Interruption in the electric supply.
▶
Plug in another power tool or
appliance and check whether it
works.
The supply cord or plug is defec-
tive.
▶
Have the parts checked by a
trained electrical specialist and
replaced if necessary.
The control switch is defective.
▶
Have the power tool checked by
a trained electrical specialist and
the carbon brushes replaced if
necessary.
Generator in sleep mode
▶
Apply a load to the generator
by connecting a second power
consumer (e.g. worklight).
The power tool starts and the
service indicator lights red.
The service indicator lights.
▶
Have the power tool serviced or
repaired by
Hilti
Service.
The tool does not achieve full
power.
Power reduction is active.
▶
Press the power level selector
switch (observe the power level
indicator). Switch the power
tool off and then on again.
The extension cord is too long or
its gauge is inadequate.
▶
Use an extension cord with
an adequate conductor cross
section. (1.5 mm² for lengths up
to 40 m; 2.5 mm² for lengths up
to 65 m).
The voltage provided by the elec-
tric supply is too low.
▶
Connect the power tool to a
different electric supply.
The chisel cannot be released
from the chuck.
The chuck is not pulled back fully.
▶
Pull the chuck back as far
as it will go and remove the
accessory tool.
9
Disposal
Most of the materials from which
Hilti
tools and appliances 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.
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