User's Manual

c) When the tool is brought into a warm environ-
ment 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 con-
ditions of jobsite use, as with other optical and
electronic instruments (e.g. binoculars, spec-
tacles, 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.
j) Use the AC adapter only for connecting to the AC
supply.
k) Check to ensure that the tool and AC 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
AC adapter if the extension cord or AC adapter are
damaged while working. Disconnect the 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 AC adapter when it is dirty
or wet. Dust (especially dust from conductive
materials) or dampness adhering to the surface
of the AC 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) 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 AC adapter or PRA 86
car charging connector for charging. Failure to
observe these points may result in damage to the
tool.
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