o) Do not expose the supply cord to heat, oil or
sharp edges.
p) Never operate the mains adapter when it is dirty
or wet. Dust (especially dust from conductive
materials) or dampness adhering to the surface
of the mains adapter may, under unfavorable
conditions, lead to electric shock. Dirty or dusty
tools should thus be checked at a Hilti service
center at regular intervals, especially if used
frequently for working on conductive materials.
q) Avoid touching the contacts.
5.4.1 Battery tool use and care
a) Check that the tool is switched off before fitting
the battery. Use only the Hilti battery approved for
use with this tool.
b) Do not expose batteries to high temperatures or
fire. This presents a risk of explosion.
c) Do not disassemble, squash or incinerate batter-
ies and do not subject them to temperatures over
75°C. A risk of fire, explosion or injury through
contact with caustic substances may otherwise
result.
d) Avoid ingress of moisture. Moisture may cause
a short circuit resulting in a risk of burning injury
or fire.
e) Do not use batteries other than those approved
for use with the applicable tool or appliance.
Use of other batteries or use of the battery for
purposes for which it is not intended presents a
risk of fire and explosion.
f) Observe the special instructions applicable to the
transport, storage and use of Li-ion batteries.
g) Avoid short-circuiting the battery. Before insert-
ing the battery in the tool, check that the terminals
of the battery and the tool are free from for-
eign objects. Short-circuiting the battery terminals
presents a risk of fire, explosion or contact with
caustic substances.
h) Do not charge or continue to use damaged bat-
teries (e.g. batteries with cracks, broken parts,
bent or pushed-in and/or pulled-out contacts).
i) Use only the specified battery to power the tool
and use only the PRA 85 mains adapter or PRA 86
car charging connector for charging. Failure to
observe these points may result in damage to the
tool.
6. Before use
NOTE
The tool may be powered only by the Hilti PRA 84
battery, which is manufactured in accordance with
IEC 60285.
6.1 Switching the tool on
Press the on / off button.
NOTE
After switching on, the tool begins to level itself
automatically.
6.2 LED indicators
Please refer to section 2 “Description”.
6.3 Battery use and care
Store the battery in a cool, dry place. Never store
the battery where it is exposed to direct sunlight or
sources of heat, e.g. on heaters / radiators or behind a
motor vehicle windscreen. Batteries that have reached
the end of their life must be disposed of safely and
correctly to avoid environmental pollution.
6.4 Charging the battery
DANGER
Use only the Hilti batteries and Hilti mains adapters
listed under “Accessories”.
6.4.1 Charging a new battery for the first time
Charge the battery fully before using it for the first
time.
NOTE
Make sure the system to be charged is standing
securely.
6.4.2 Charging a previously used battery
Ensure that the outer surfaces of the battery are clean
and dry before inserting it in the tool.
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