Hilti NPR 19-22 Manual page 21

2.2 Additional safety instructions for pressing tools
Personal safety
▶ Comply with the country-specific standards and safety instructions for operation of pressing tools and
all work on, with or in proximity to electrically live equipment and lines.
▶ Persons who work in the vicinity of live lines must receive regular instruction and training.
▶ Use the pressing tool only when it is in technically faultless condition.
▶ Never tamper with or modify the product or accessories in any way.
▶ Keep the air vents clear at all times. Risk of burn injuries due to blocked air vents.
▶ If you notice oil escaping, cease working with the tool and consult Hilti Service. Immediately remove the
leaked oil.
▶ Check that the locking pin is pushed in all the way and securely engaged.
▶ Throughout the pressing operation, take great care to keep your hands and fingers well clear of the
pressing head.
▶ Switch the product on only after you have brought it to the working position.
▶ Wait until the product has come to a complete stop before you lay it down.
▶ Always hold the pressing tool firmly with both hands on the grips provided for the purpose.
▶ Do not secure a belt hook to this power tool.
▶ Risk of injury by falling tools and/or accessories. Before starting work, check that the battery and installed
accessories are secure.
▶ Do not look directly into the light source (LED) of the product and do not aim the beam at other persons'
faces. Risk of dazzling or eye damage.
▶ Keep the retaining strap and the tether clean and dry.
▶ Never carry out pressing work on parts of a gas supply network unless express approval has been given
by the system supplier for use of this pressing tool in conjunction with specially tested and approved
fittings.
▶ After pressing, pressure-test the piping system to ensure that it is free of leaks (resulting from misuse of
the tool, for example).
Electrical safety
▶ Before use of the pressing tool, all live cables and other equipment carrying electric voltage within the
area in which the user is working are to be switched off. If this is not possible, the corresponding safety
precautions for working in proximity to live cables or equipment must be implemented and observed.
▶ Before beginning work, check the working area for concealed electric cables or gas and water pipes.
External metal parts of the product could give you an electric shock or cause an explosion if you
accidentally damage an electric cable or a gas or water pipe.
▶ Do not press live parts, i.e. parts carrying electric voltage. The pressing tool must be considered as being
uninsulated and must therefore be used in combination with personal protective equipment (protective
gloves, protective footwear, protective clothing, etc.) of a type suitable to provide protection for yourself
and other persons in the vicinity.
Power tool use and care
▶ After approx. 50 consecutive pressing operations, switch the pressing tool off and allow it to cool down
for about 15 minutes. Overheating can lead to damage to the pressing tool.
▶ Store the pressing tool in a dry place inaccessible to children and unauthorized persons.
▶ Hilti recommends having the crimping tool overhauled by Hilti Service after 15,000 crimping operations.
▶ Before starting work, check the pressing tool, the pressing jaws (NPR PS) or, as applicable, the pressing
rings (NPR PR) in accordance with the instructions. Inadequately tested pressing tools, jaws or rings can
lead to substandard pressings and are a potential safety risk for the operator.
▶ Make sure that there are no foreign objects (e.g. plaster, grit particles, metal cuttings, etc.) in the pressing
jaws and no parts are damaged. Do not continue to use damaged or distorted pressing jaws!
2.3 Battery use and care
▶ Comply with the following safety instructions for the safe handling and use of Li-ion batteries.
Failure to comply can lead to skin irritation, severe corrosive injury, chemical burns, fire and/or explosion.
▶ Use only batteries that are in perfect working order.
▶ Treat batteries with care in order to avoid damage and prevent leakage of fluids that are extremely
harmful to health!
▶ Do not under any circumstances modify or tamper with batteries!
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