Hilti DX 351 Original Operating Instructions page 22

1.4 Improper use
● Manipulation or modification of the tool is not per-
missible.
● Do not operate the tool in an explosive or flammable
atmosphere, unless the tool is specially approved for
en
such use.
● Use only original Hilti fasteners, cartridges, acces-
sories and spare parts or those of equivalent quality.
● Observe the information printed in the operating
instructions concerning operation, care and mainte-
nance.
● Never point the tool at yourself or any bystander.
● Never press the muzzle of the tool against your hand
or other part of your body.
● Do not drive nails into excessively hard or brittle mate-
rials such as glass, marble, plastic, bronze, brass, cop-
per, natural rock, insulation material, hollow brick, glazed
tile, thin-gauge sheet metal (< 4 mm), grey cast iron,
spheroidal cast iron and gas concrete.
1.5 Technology
● This tool is designed with the latest available tech-
nology.
● The tool and its ancillary equipment may present haz-
ards when used incorrectly by untrained personnel or
not as directed.
1.6 Making the workplace safe
● Ensure that the workplace is well lit.
● Operate the tool only in well-ventilated working areas.
● The tool is for hand-held use only.
● Avoid unfavorable body positions. Work from a secure
stance and stay in balance at all times
● Keep other persons, children in particular, outside the
working area.
● Before using the tool, make sure that no one
is standing behind or below the point where fasteners
are to be driven.
● Keep the grip dry, clean and free from oil and grease.
1.7 General safety precautions
● Operate the tool only as directed and only when it is
in faultless condition.
● If a cartridge misfires or fails to ignite, proceed as fol-
lows:
1. Keep the tool pressed against the working surface for
30 seconds.
2. If the cartridge still fails to fire, withdraw the tool from
the working surface, taking care that it is not pointed
towards your body or bystanders.
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Printed: 12.08.2013 | Doc-Nr: PUB / 5069821 / 000 / 02
3. Manually advance the cartridge strip one cartridge.
Use up the remaining cartridges on the strip. Remove
the used cartridge strip and dispose of it in such a
way that it can be neither reused nor misused.
● Never attempt to pry a cartridge from the magazine
strip or the tool.
● Keep the arms flexed when the tool is fired (do not
straighten the arms).
● Never leave the loaded tool unattended.
● Always unload the tool before beginning cleaning,
servicing or changing parts and before storage.
● Unused cartridges and tools not presently in use must
be stored in a place where they are not exposed to humi-
dity or excessive heat. The tool should be transported
and stored in a toolbox that can be locked or secured to
prevent use by unauthorized persons.
1.8 Temperature
● Do not disassemble the tool while it is hot.
● Never exceed the recommended maximum fastener
driving rate (number of fastenings per hour). The tool
may otherwise overheat.
● Should the plastic cartridge strip begin to melt, stop
using the tool immediately and allow it to cool down.
1.9 Requirements to be met by users
● The tool is intended for professional use.
● The tool may be operated, serviced and repaired only
by authorised, trained personnel. This personnel must
be informed of any special hazards that may be encoun-
tered.
● Proceed carefully and do not use the tool if your full
attention is not on the job.
● Stop working with the tool if you feel any pain or dis-
comfort.
1.10 Personal protective equipment
● The operator and other persons in the immediate vicin-
ity must always wear approved eye protection, a hard
hat and suitable ear protection.