General Safety Rules; Before Use; Led Indicators; Switching The Tool On - Hilti PR 3 Manual De Instrucciones

medicines, alcohol or drugs. Nevertheless, as with the
sun, one should not look directly into sources of bright
light. Do not direct the laser beam toward persons.

5.4 General safety rules

a) Check the condition of the tool before use. If the
tool is found to be damaged, have it repaired at a
Hilti service center.
b) The user must check the accuracy of the tool
after it has been dropped or subjected to other
mechanical stresses.
c) When the tool is brought into a warm environment
from very cold conditions, or vice-versa, allow it
to become acclimatized before use.
d) If mounting on an adapter, check that the tool is
screwed on securely.
e) Keep the laser exit aperture clean to avoid meas-
urement errors.
f) Although the tool is designed for the tough condi-
tions of jobsite use, as with other optical and elec-
tronic instruments (e.g. binoculars, spectacles,
cameras) it should be treated with care.
g) Although the tool is protected to prevent entry
of dampness, it should be wiped dry each time
before being put away in its transport container.
h) Check the tool before using it for important meas-
uring work.
i) Check the accuracy of the measurements several
times during use of the tool.
Use the mains adapter only for connecting to the
j)
mains supply.
k) Check to ensure that the tool and mains adapter
do not present an obstacle that could lead to a
risk of tripping and personal injury.
l) Ensure that the workplace is well lit.
m) Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
n) Check the condition of the extension cord and
replace it if damage is found. Do not touch the
mains adapter if the extension cord or mains ad-
apter are damaged while working. Disconnect the

6 Before use

NOTE
The tool may be powered only by the Hilti PRA 84 battery.

6.1 Switching the tool on

Press the on / off button.
NOTE
After switching on, the tool begins to level itself automat-
ically.
supply cord plug from the power outlet. Damaged
supply cords or extension cords present a risk of
electric shock.
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 ma-
terials) or dampness adhering to the surface of
the mains adapter may, under unfavorable condi-
tions, 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) Use only the Hilti battery approved for use with this
tool.
b) Do not expose batteries to high temperatures and
keep them away from fire. This presents a risk of
explosion.
c) The batteries must not be taken apart, crushed,
heated to more than 75°C (167°F) or burnt. A risk of
fire, explosion or injury through contact with caustic
substances may otherwise result.
d) Avoid ingress of moisture. Moisture in the interior
of the tool may cause a short circuit and chemical
reactions resulting in burns to the skin or fire.
e) Use only batteries of the type approved for use
with the applicable tool. Use of other batteries or
use of the batteries for purposes for which they are
not intended presents a risk of fire and explosion.
f) Observe the special guidelines applicable to the
transport, storage and use of Li-ion batteries.
g) Avoid short circuiting the battery terminals. Check
that the battery terminals and the terminals in the
device are free from foreign objects before inserting
the battery in the device. Short circuiting the bat-
tery terminals presents a risk of fire, explosion and
chemical burns.
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.

6.2 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
en
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