Hilti DX 351-CT Manuale utente
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*388037* 388037 English 1
Original operating instructions
1 Information about the operating instructions
1.1 About these operating instructions
• Read these operating instructions before the product is used or operated for the first time. This is a
prerequisite for safe, trouble-free handling and use of the product.
• Observe the safety instructions and warnings in these operating instructions and on the product.
• Always keep the operating instructions with the product and make sure that the product is accompanied
by these operating instructions only, when the product is given to other persons.
1.2 Explanation of symbols
1.2.1 Warnings
Warnings alert persons to hazards that occur when handling or using the product. The following signal words
are used:
DANGER
DANGER !
▶Draws attention to imminent danger that will lead to serious personal injury or fatality.
WARNING
WARNING !
▶Draws attention to a potential threat of danger that can lead to serious injury or fatality.
CAUTION
CAUTION !
▶Draws attention to a potentially dangerous situation that could lead to personal injury or damage to the
equipment or other property.
1.2.2 Symbols in the operating instructions
The following symbols are used in these operating instructions:
Comply with the operating instructions
Instructions for use and other useful information
Dealing with recyclable materials
Do not dispose of electric equipment and batteries as household waste
1.2.3 Symbols in illustrations
The following symbols are used in illustrations:
These numbers refer to the illustrations at the beginning of these operating instructions.
The numbers in illustrations refer to important work steps or to components important for the
work steps. In the text, the corresponding numbers draw attention to these work steps or compo-
nents, e.g. (3).
Item reference numbers are used in the overview illustration and refer to the numbers used in
the key in the product overview section.
This symbol is intended to draw your special attention to certain points for handling the product.
2 English 388037 *388037*
1.3 Product-dependent symbols
1.3.1 Warning symbols
Warning symbols are warnings of hazards.
Warning: Hot surface
1.3.2 Obligation symbols
Obligation symbols indicate "must do" actions.
Wear eye protection
Wear head protection
Wear ear protection
1.4 Product information
products are designed for professional users and only trained, authorized personnel are
permitted to operate, service and maintain the products. This personnel must be specifically informed about
the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by
untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.
▶Write down the serial number in the table below. You will be required to state the product details when
contacting Hilti Service or your local Hilti organization to inquire about the product.
Product information
Cartridge fastening tool DX 351-CT
Generation 01
Serial no.
2 Safety
2.1 Safety instructions
Basic safety precautions
WARNING! Read all safety instructions and other instructions. Failure to comply with the safety
instructions and instructions can cause serious injuries.
Keep all safety instructions and instructions for future reference.
▶Do not tamper with or modify the fastening tool in any way.
▶Use only fastening tools and items of equipment that are compatible with each other (base plates,
fastener guides, magazines, pistons and accessories) and consumables (fasteners and cartridges).
▶Check the fastening tool and accessories for damage.
▶Moving parts must be in full working order; make sure that they cannot jam. Comply with the
instructions on cleaning and oiling in these operating instructions → page 11.
▶All parts must be correctly installed to ensure faultless operation of the fastening tool. Damaged
parts must be properly repaired or replaced by Hilti Service unless otherwise stated in the operating
instructions.
▶Use only Hilti DX cartridges, or other suitable cartridges that meet the minimum safety requirements.
→ page 4
▶Use the fastening tool only for the applications defined in the section headed "Intended use" → page 4.
Do not attempt to drive fasteners into unsuitable base materials, for example material that is too thin, too
hard, or too brittle. Driving a fastener into these materials can cause the fastener to break, splinter the
material or be driven right through. Examples of unsuitable materials are:
▶Weld seams in steel, cast iron, glass, marble, plastic, bronze, brass, copper, insulating material,
hollow brick, ceramic brick, thin sheet metal (< 4 mm) and cellular concrete.
▶Comply with the Hilti 'Direct Fastening Technology Manual' or the corresponding local Hilti 'Technical
Guide to Fastening Technology'. Always also comply with the operating instructions of the fastener
to be used.
*388037* 388037 English 3
Requirements to be met by users
▶Only appropriately trained persons who have been duly authorized and informed of the possible hazards
are allowed to operate or service this fastening tool.
▶Wear your personal protective equipment while the tool is in use.
▶Wear suitable eye protection and a hard hat.
▶Wear protective gloves. The fastening tool can get hot in use.
▶Wear ear protectors. The ignition of a propellant charge can damage the hearing.
▶Wear non-skid shoes.
Safety at the workplace
▶Keep the workplace tidy. Objects which could cause injury should be removed from the working area.
Disorder in the working zone can lead to accidents.
▶Make sure that the working area is well lit and, when working in an enclosed space, make sure it is
adequately ventilated.
Personal safety
▶Never press the nosepiece of the fastening tool against your hand or any other part of the body! Never
point the fastening tool toward other persons! → page 8
▶Do not compress the fastening tool with your hand on the magazine or fastener guide, piston or piston
guide or a loaded fastener. Compressing the fastening tool by hand can make the fastening tool ready
to fire, even without a fastener guide installed. This gives rise to a risk of serious injury for yourself and
others.
▶Everyone in the vicinity must wear ear protection, eye protection and a hard hat.
▶Stay alert, watch what you are doing and use common sense when operating a direct fastening tool. Do
not use the fastening tool when you are tired or under the influence of drugs, alcohol or medication. Stop
working if you experience pain or feel unwell. A moment of inattention while operating the fastening tool
can result in serious injury.
▶Avoid working in awkward body positions. Make sure you work from a safe stance and stay in balance
at all times.
▶Keep the arms slightly bent while operating the fastening tool, do not straighten the arms.
▶Keep other people away from the working area, especially children.
Use and care of direct fastening tools
▶Use the fastening tool only for its intended use and only when it is in faultless condition. Do not attempt
to use the tool for purposes for which it is not intended.
▶Do not use the fastening tool in places where there is a risk of fire and explosion.
▶Before driving fasteners, check behind the object to make sure that no-one is present in line with the
fasteners to be driven. Danger of fasteners penetrating right through!
▶Make sure that the nosepiece of the fastening tool is never pointed toward yourself or other persons.
▶Hold the fastening tool only by the gripping surfaces provided for the purpose.
▶Keep the gripping surfaces dry, clean and free from oil and grease.
▶Pull the trigger only when the fastening tool is at right angles to and pressed fully against the work
surface.
▶Before starting work, check the selected energy setting.
▶Carry out a test by driving fasteners into the base material you are working on.
▶When driving fasteners, always hold the fastening tool at right angles to the work surface. This reduces
the risk of a fastener being deflected by the base material.
▶Do not drive fasteners into existing holes except in situations where this is recommended by Hilti.
▶Do not re-use a fastener that was used beforehand - risk of injury! Use a new fastener.
▶Do not attempt to re-drive a fastener that was not driven in deeply enough! The fastener could break.
▶Never leave a loaded fastening tool unattended.
▶Always unload the fastening tool (remove cartridges and fasteners) before cleaning, maintenance and
care, changing the fastener guide, before work breaks and before storing the tool.
▶Transport and store the fastening tool in the Hilti case intended for the purpose.
▶Store fastening tools that are not in use in a dry, secure place where they are inaccessible to children.
▶Always position the nosepiece of the fastening tool on smooth, flat surfaces free of obstructions and fully
supported by the sub-structure.
▶Comply with the specifications for distances from edges and spacing between fasteners (see the section
headed "Minimum distances").
4 English 388037 *388037*
▶Before driving fasteners, check that there is no electrical wiring, water piping or gas piping behind the
surface into which you want to drive them.
▶For detailed information, request a copy of the Hilti 'Direct Fastening Technology Manual' or the
corresponding local Hilti 'Technical Guide to Fastening Technology' from your Hilti Store.
Thermal safety rules
▶Do not exceed the maximum fastener driving rate recommended in the section headed "Technical data".
▶If the fastening tool overheats or if the cartridge strip deforms or melts, remove the cartridge strip and
allow the fastening tool to cool down.
▶Do not dismantle the fastening tool while it is hot. Allow the fastening tool to cool down.
Risk of explosion with cartridges
▶Use only cartridges that are suitable and approved for use with the fastening tool.
▶Remove the cartridge strip when you are going to take a break and when you have finished the job, and
before you transport the fastening tool.
▶Do not use force to remove fasteners and/or cartridges from the magazine strip or the fastening tool.
▶Store unused cartridges in accordance with the storage specifications for cartridges for powder-actuated
fastening tools (e.g. dry, temperature between 5 °C and 25 °C) in a locked storage facility.
▶Do not leave unused or partly used cartridge strips lying around. Collect the used cartridge strips and
store the cartridge strips at a suitable location.
▶Follow all instructions relating to safety, handling and storage in the safety data sheet of the cartridges.
3 Description
3.1 Product overview 1
@Piston
;Piston guide
=Power-tool housing
%Switchgear box
&Latching pawl
(Locking sleeve
)Cartridge barrel (ejection)
+Cartridge barrel (insertion)
§Adjusting knob for driving energy
/Indicator for driving energy
:Air vents
∙Switchgear box
$Thread for extension rod
£Trigger mechanism (extension)
3.2 Intended use
The product described is a cartridge-actuated fastening tool for driving fasteners into steel and concrete and
it is designed for use on ceilings. The product can be used only with the appropriate X-PT-CT extensions
and grip sections.
Use the product only in combination with the equipment designed for use with the fastening tool. Fastener
guides, pistons and fasteners must be compatible with one another.
Use the product only with spare parts and accessories from Hilti and with cartridges and fasteners from
Hilti, or other suitable cartridges and fasteners.
3.3 Requirements to be met by cartridges
WARNING
Risk of injury by unexpected explosion! Use of cartridges that do not meet the minimum safety
requirements can lead to a build-up of unburned powder. A sudden explosion and severe injuries to the
operator and bystanders can result.
▶Use only cartridges that meet the minimum safety requirements of your local statutory regulations!
▶Adhere to the maintenance intervals as stated and have the fastening tool cleaned regularly by Hilti-
Service!
Use only the Hilti DX cartridges listed in this table, or other suitable cartridges that are compliant with the
minimum safety requirements:
• It is a requirement for EFTA countries that the cartridges must be CE-compliant and must bear the CE
mark of compliance.
• It is a requirement for the United Kingdom that the cartridges must be UKCA-compliant and must bear
the UKCA mark of compliance.
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