Hilti SF 14-A Mode D'emploi page 17

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continue working with a battery in this condition but it should
be replaced in good time.
8.4 Maintenance
WARNING
Repairs to the electrical section of the power tool may be
carried out only by trained electrical specialists.
Check all external parts of the power tool for damage at regular
intervals and check that all controls operate faultlessly. Do not
operate the power tool if parts are damaged or when the controls
do not function faultlessly. If necessary, the power tool should be
repaired by Hilti Service.
8.5 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.
9 Troubleshooting
Fault Possible cause
The power tool The battery is dis-
doesn't run. charged or fitted in-
correctly.
Electrical fault.
The power tool The power tool has
doesn't run and all been overloaded.
4 LEDs blink.
The overheating pre-
vention cut-out has
been activated.
The power tool The battery is dis-
doesn't run and 1 charged.
LED blinks.
The battery is too hot
or too cold.
No hammering The torque and op-
action. erating mode setting
ring are not set to the
hammer drilling sym-
bol.
The on / off switch The forward / re-
can't be pressed, verse switch is in
i.e. the switch is the middle position
locked. (transport lock en-
gaged).
The battery runs Battery condition is
down more not optimal.
quickly than usual.
The battery does- The retaining lugs on
n't engage with the battery are dirty.
an audible double
click.
The power tool Electrical fault.
or the battery be-
comes very warm.
The power tool has
been overloaded (ap-
plication limits ex-
ceeded).
Printed: 26.08.2013 | Doc-Nr: PUB / 5152169 / 000 / 01
en
Remedy
The battery must be
heard to engage with
a double click or,
respectively, needs
to be charged.
Remove the battery
from the power tool
and contact Hilti Ser-
vice.
Release the control
switch and press it
again.
Allow the power tool
to cool down.
Clean the ventilation
slots.
Change the battery
and recharge the
discharged battery.
Bring the battery to
the recommended
working temperature.
Turn the torque and
operating mode set-
ting ring to the ham-
mer drilling symbol.
Push the forward /
reverse switch to the
left or right.
Have battery con-
dition diagnosed by
Hilti Service or re-
place with a new bat-
tery.
Clean the retaining
lugs and check that
the battery engages
securely. Contact Hilti
Service if the problem
persists.
Switch the power tool
off immediately, re-
move the battery and
contact Hilti Service.
Use the right power
tool for the job (don't
use a low-powered
tool for heavy work).
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