Operating Instruction SD 4500 (01)

English 17
Trouble or fault Possible cause Action to be taken
The screwdriver
doesn’t work and
all four LEDs blink.
The overload cut-out
has been activated.
▶ Release the control
switch and then press
it again. Reduce the
load on the tool.
The control switch
can’t be pressed, i.e.
the switch is locked.
The safety lock is en-
gaged.
▶ Set the forward / re-
verse selector switch
to forward or reverse
rotation.
The screwdriver runs
but the screw can’t
be driven.
The wrong direction of
rotation is set.
▶ Use the forward
/ reverse selector
switch to set the right
direction of rotation.
Running speed sud-
denly drops consid-
erably.
Low battery. ▶ Charge the battery.
→ page 11
The battery runs
down more quickly
than usual.
Battery condition is not
optimal.
▶ Have the battery
condition diagnosed
by Hilti Service or fit a
new battery.
The battery doesn’t
engage with an audi-
ble click.
The retaining lugs on the
battery are dirty.
▶ Clean the retaining
lugs and engage the
battery in the working
position.
The screwdriver or
the battery gets very
hot.
Electrical fault. ▶ Switch the screw-
driver off immediately,
remove the battery
and contact Hilti Ser-
vice.
The screwdriver has
been overloaded by
exceeding its application
limits.
▶ Select a screwdriver
with adequate per-
formance for the
application.
9 Disposal
Most of the materials from which Hilti tools and appliances are manu-
factured can be recycled. The materials must be correctly separated before
they can be recycled. In many countries, your old tools, machines or appli-
ances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti
representative for further information.
Printed: 15.07.2019 | Doc-Nr: PUB / 5295850 / 000 / 02