Hilti PR 20, Operating Instructions Manual

Page: 9 / 52

6
5.4.2 Laser classification
The tool conforms to laser class 2 based
on the IEC825-1 / EN60825-01 standard
and class II based on CFR 21 § 1040
(FDA). These tools may be used without
need for further protective measures. The
eyelid closure reflex protects the eyes if a
person looks into the beam unintentionally
for a brief moment. The eyelid closure
reflex can, however, be negatively influ-
enced by medication, alcohol or drugs.
Nevertheless, as with the sun, a person
should not look directly into sources of
bright light. The laser beam should not be
directed towards persons.
Laser information plates based
on IEC825 / EN6082-1
Laser information plates for the US
based on CFR 21 § 1040 (FDA)
This laser product complies with 21 CFR
1040, as applicable.
5.5 General safety precautions
– Check the tool before use. If the tool is
found to be damaged, have it repaired at
a Hilti service center.
– The accuracy of the tool must be
checked after it has been dropped or
subjected to other mechanical stressing.
– When the tool is brought into a warm
environment from very cold conditions,
or vice versa, allow it to become acclima-
tized before use.
– If mounting on an adaptor, ensure that
the tool is screwed on securely.
– Keep the laser exit aperture clean to
avoid measurement errors.
– Although the tool is designed for the
tough conditions of jobsite use, as with
other optical instruments (binoculars,
spectacles, cameras) it should be treated
with care.
– 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.
– Check the tool before using it for impor-
tant leveling work.
5.5.1 Electrical
– Do not allow the batteries to fall into the
hands of children.
– Do not overheat or incinerate the batter-
ies. They may explode or release toxic
substances.
– Do not attempt to recharge the batteries.
– Do not solder the batteries into the tool.
– Do not discharge the batteries by short
circuiting. This may cause overheating
and swelling of the batteries.
– Do not attempt to open the batteries and
do not subject them to excessive
mechanical stress.
5. Safety precautions
Printed: 07.07.2013 | Doc-Nr: PUB / 5070169 / 000 / 00