Hilti ST 1800--A18 Mode D'emploi Original page 14

7 Troubleshooting
▶ If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
7.1 The metal construction screwdriver is not operational.
Trouble or fault
The metal construction
screwdriver doesn't start.
The control switch can't be
pressed, i.e. the switch is
locked.
The battery is not heard to
engage.
LED 1 blinks.
The screwdriver doesn't work
and all four LEDs blink.
7.2 The metal construction screwdriver is operational.
Trouble or fault
Speed of rotation drops con-
siderably.
The metal construction
screwdriver or battery gets
very hot.
The screw is pressed too
tightly against the surface.
The screw is not pressed
tightly enough against the
surface.
The screwdriver runs but the
screw can't be driven.
8 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.
8
Possible cause
The battery is not fully inserted.
The battery is discharged.
Electrical fault.
The forward / reverse switch is in
the middle position.
The retaining lugs on the battery
are dirty.
The battery is discharged.
The battery is too hot.
The battery is too cold.
The product is overloaded (appli-
cation limits exceeded).
Possible cause
The battery is discharged.
Electrical fault.
The depth gauge is set incorrectly.
The depth gauge is set incorrectly.
The wrong direction of rotation is
set.
Action to be taken
▶ Push the battery in until it
engages with an audible click.
▶ Charge the battery.
▶ Switch the metal construction
screwdriver off immediately,
remove the battery, keep it
under observation, allow it
to cool down and contact
HiltiService.
▶ Push the forward / reverse
switch to the left or right.
▶ Clean the retaining lugs and
push the battery in until it
engages. Contact Hilti Service
if the problem persists.
▶ Charge the battery.
▶ Bring the battery to the recom-
mended operating temperature.
▶ Bring the battery to the recom-
mended operating temperature.
▶ Release the control switch and
then press it again. Reduce the
load on the tool.
Action to be taken
▶ Charge the battery.
▶ Switch the metal construction
screwdriver off immediately,
remove the battery, keep it
under observation, allow it
to cool down and contact
HiltiService.
▶ Turn the depth gauge to the
right.
▶ Turn the depth gauge to the left.
▶ Set the forward/reverse switch
to the desired direction of
rotation.