Troubleshooting; Disposal - Hilti SF 151-A Operating Instructions Manual

9. Troubleshooting

Fault
The tool doesn't
run.
en
No hammering
action.
The on / off switch
can't be pressed,
i.e. the switch is
locked.
Running speed
suddenly drops
considerably.
The battery reaches
the end of its
capacity more
quickly than usual.
The battery doesn't
engage with an
audible double
click.
The tool or the
battery become
very warm.

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.
For EC countries only
Disposal of electric tools together with household waste is not permissible!
In observance of European Directive 2002/96/EC on waste electrical and electronic equipment
and its implementation in accordance with national law, electric tools that have reached the end
of their life must be collected separately and returned to an environmentally compatible recycling
facility.
22
Possible cause
The battery is discharged or fitted
incorrectly.
Electrical fault.
Check the position of the torque and
operating mode setting ring.
The forward / reverse switch is in the
middle position (transport lock engaged).
The battery is discharged.
Battery condition is not optimal.
The retaining lugs on the battery are dirty. Clean the retaining lugs and check that
Electrical fault.
The tool has been overloaded (application
limits exceeded).
Remedy
The battery must engage with an audible
click or, respectively, needs to be
charged.
Remove the battery from the tool and
contact Hilti.
Turn the torque and operating mode
setting ring to the hammer drilling
symbol.
Push the forward / reverse switch to the
left or right.
Change the battery and recharge the
discharged battery.
Charge the battery in refresh charge mode
(please refer to the operating instructions
for the charger).
the battery engages securely. Contact
Hilti Service if the problem persists.
Switch the tool off immediately, remove
the battery and contact Hilti Service.
Use the right tool for the job (don't use a
low-powered tool for heavy work).