Hilti SF 10W-A18 Manual page 14

Trouble or fault
The power tool doesn't work
and all four LEDs blink.
The power tool doesn't work
and one LED blinks.
The on/off button cannot be
pressed, i.e. the button is
locked.
The battery runs down more
quickly than usual.
The battery doesn't engage
with an audible double click.
The power tool or battery
gets very hot.
8 Disposal
WARNING
Risk of injury. Hazards presented by improper disposal.
▶ Improper disposal of the equipment may have the following consequences: The burning of plastic
components generates toxic fumes which may present a health hazard. Batteries may explode
if damaged or exposed to very high temperatures, causing poisoning, burns, acid burns or
environmental pollution. Careless disposal may permit unauthorized and improper use of the
equipment. This may result in serious personal injury, injury to third parties and pollution of the
environment.
▶ Dispose of defective batteries right away. Keep them out of reach of children. Do not disassemble
or incinerate the batteries.
▶ Batteries that have reached the end of their life must be disposed of in accordance with national
regulations or returned to Hilti.
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.
9 Manufacturer's warranty
▶ Please contact your local Hilti representative if you have questions about the warranty conditions.
Possible cause
The power tool has been over-
loaded briefly.
The overheating cut-out has been
activated.
Low battery.
The battery is too hot or too cold.
The forward/reverse selector
switch is in the middle position.
Very low ambient temperature.
The retaining lugs on the battery
are dirty.
The tool is overloaded (application
limits exceeded).
Action to be taken
▶ Release the control switch and
then press it again.
▶ Allow the power tool to cool
down. Clean the air vents.
▶ Change the battery and charge
the empty battery.
▶ Bring the battery to the recom-
mended operating temperature.
▶ Push the forward/reverse switch
to the left or right.
▶ Allow the battery to warm up
slowly to room temperature.
▶ Clean the retaining lugs and
push the battery in until it
engages. Contact Hilti Service
if the problem persists.
▶ Pay attention to the power
and performance rating of the
product before using it, i.e
check its suitability for the job
on hand. See "Technical data"
section.
9