Hilti SF 2H-A Operating Instructions Manual page 29

▶ Always hold the tool securely by the grip. If the accessory tool (e.g.
the drill bit) sticks and stalls, the power tool, due to its high torque, may
tend to rotate about its own axis in the direction opposite to that of the
accessory tool.
Use and care of electric tools
▶ Secure the workpiece. Use clamps or a vice to hold the workpiece
in position. The workpiece is thus held more securely than by hand and
both hands remain free to operate the power tool.
▶ Check that the accessory tools used are compatible with the chuck
system and that they are secured in the chuck correctly.
Use and care of battery-powered tools
▶ Check that the tool is switched off before inserting the battery.
Inserting a battery into an electric tool that is switched on can lead to
accidents.
▶ Do not expose batteries to high temperatures and keep them away
from fire. There is a risk of explosion.
▶ Do not disassemble, squash or incinerate batteries and do not subject
them to temperatures over 80°C. This presents a risk of fire, explosion
or injury through contact with caustic substances.
▶ Avoid ingress of moisture. Ingress of moisture may cause a short circuit,
resulting in burning injuries or fire.
▶ Observe the special guidelines applicable to the transport, storage
and use of Li-ion batteries.
▶ Avoid short circuiting the battery terminals. Check that the battery
terminals and the terminals in the power tool are free from foreign
objects before inserting the battery in the tool. Short circuiting the
battery terminals presents a risk of fire, explosion and chemical burns.
▶ Do not continue to use or attempt to charge damaged batteries (e.g.
batteries with cracks, broken parts, bent or pushed-in / pulled-out
contacts).
▶ If the battery is too hot to touch it may be defective. In this case,
place the power tool in a non-flammable location, well away from
flammable materials, where it can be kept under observation and
allowed to cool down. Contact Hilti Service after the battery has
cooled down.
Electrical safety
▶ Before beginning work, check the working area (e.g. using a metal
detector) to ensure that no concealed electric cables or gas and
water pipes are present. External metal parts of the power tool may
become live, for example, when an electric cable is damaged accidentally.
This presents a serious risk of electric shock.
*2125996*
Printed: 19.06.2019 | Doc-Nr: PUB / 5251707 / 000 / 01
2125996 English 23