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English
19
Trouble or fault
Possible cause
Action to be taken
The tool cuts out while run-
ning.
The overheating prevention cut-out
has been activated.
▶
Allow the tool to cool down.
Clean the air vents. Running
under no load is still possible.
ATC has been triggered.
▶
Release the control switch and
then press it again.
No hammering action.
The tool is too cold.
▶
Bring the tip of the drill bit
into contact with the working
surface, switch the rotary
hammer on and allow it to
run. If necessary, repeat the
procedure until the hammering
mechanism begins to operate.
The function selector switch is set
to “Rotary drilling only”
.
▶
Set the function selector switch
to the “Hammer drilling” position
.
Contact pressure too low.
▶
Press harder to increase contact
pressure so that hammer
mechanism cuts in.
Combihammer does not
achieve full power.
The gauge (cross section) of the
extension cord conductors is inad-
equate.
▶
Use an extension cord with
an adequate conductor cross
section.
The control switch is not fully
pressed.
▶
Press the control switch as far
as it will go.
The tool has been set to reverse
rotation.
▶
Set the tool to forward rotation.
Voltage from generator is too low.
▶
Make sure that voltage rating of
electricity supply is correct.
The drill bit does not rotate.
The function selector switch is not
engaged or is in the
“Chiseling”
or
“Chisel adjustment” position.
▶
Set the function selector switch
to “Drilling without hammering”
or “Hammer drilling”
.
The drill bit is stuck (not free
to rotate).
The drill bit is stuck in the hole.
▶
Release the switch, hold the
power tool securely, and then
switch the tool on again.
The drill bit cannot be re-
leased.
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.
▶
Disposal of electric tools or appliances together with household waste is not permissible.
10 Manufacturer’s warranty
▶
Please contact your local
Hilti
representative if you have questions about the warranty conditions.
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