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Telwin NORDICA 4.185 TURBO Manual

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(EN)
INSTRUCTION MANUAL
WARNING:
BEFORE USING THE WELDING MACHINE READ THE INSTRUCTION
MANUAL CAREFULLY.
ARC WELDING MACHINES FOR COATED ELECTRODES (MMA) FOR
INDUSTRIAL AND PROFESSIONAL USE.
Note: In the following text the term “welding machine” will be used.
1. GENERAL SAFETY CONSIDERATIONS FOR ARC WELDING
The operator should be properly trained to use the welding machine
safely and should be informed about the risks related to arc welding
procedures, the associated protection measures and emergency
procedures.
(Please refer to the applicable standard ”EN 60974-9: Arc welding
equipment. Part 9: Installation and Use).
- Avoid direct contact with the welding circuit: the no-load voltage
supplied by the welding machine can be dangerous under certain
circumstances.
- When the welding cables are being connected or checks and
repairs are carried out the welding machine should be switched o
and disconnected from the power supply outlet.
- Switch o the welding machine and disconnect it from the power
supply outlet before replacing consumable torch parts.
- Make the electrical connections and installation according to the
safety rules and legislation in force.
- The welding machine should be connected only and exclusively to
a power source with the neutral lead connected to earth.
- Make sure that the power supply plug is correctly connected to the
earth protection outlet.
- Do not use the welding machine in damp or wet places and do not
weld in the rain.
- Do not use cables with worn insulation or loose connections.
- Do not weld on containers or piping that contains or has contained
ammable liquid or gaseous products.
- Do not operate on materials cleaned with chlorinated solvents or
near such substances.
- Do not weld on containers under pressure.
- Remove all ammable materials (e.g. wood, paper, rags etc.) from
the working area.
- Provide adequate ventilation or facilities for the removal of
welding fumes near the arc; a systematic approach is needed in
evaluating the exposure limits for the welding fumes, which will
depend on their composition, concentration and the length of
exposure itself.
- Use adequate electrical insulation with regard to the electrode, the
work piece and any (accessible) earthed metal parts in the vicinity.
This is normally achieved by wearing gloves, shoes, head coverings
and clothing designed for this purpose and by using insulating
platforms or mats.
- Always protect your eyes with the relative lters, which must
comply with UNI EN 169 or UNI EN 379, mounted on masks or use
helmets that comply with UNI EN 175.
Use the relative re-resistant clothing (compliant with UNI EN
11611) and welding gloves (compliant with UNI EN 12477) without
exposing the skin to the ultraviolet and infrared rays produced by
the arc; the protection must extend to other people who are near
the arc by way of screens or non-reective sheets.
- Noise: If the daily personal noise exposure (LEPd) is equal to or
higher than 85 dB(A) because of particularly intensive welding
operations, suitable personal protective means must be used (Tab.
1).
- The ow of the welding current generates electromagnetic elds
(EMF) around the welding circuit.
Electromagnetic elds can interfere with certain medical equipment
(e.g. Pace-makers, respiratory equipment, metallic prostheses etc.).
Adequate protective measures must be adopted for persons
with these types of medical apparatus. For example, they must
be forbidden access to the area in which welding machines are in
operation.
The operator must adopt the following procedures in order to reduce
exposure to electromagnetic elds:
- Fasten the two welding cables as close together as possible.
- Keep head and trunk as far away as possible from the welding
circuit.
- Never wind welding cables around the body.
- Avoid welding with the body within the welding circuit. Keep both
cables on the same side of the body.
- Connect the welding current return cable to the piece being
welded, as close as possible to the welding joint.
- Do not weld while close to, sitting on or leaning against the
welding machine (keep at least 50 cm away from it).
- Do not leave objects in ferromagnetic material in proximity of the
welding circuit.
- Minimum distance d= 20 cm (Fig. M).
- Class B equipment:
This welding machine conforms to technical product standards
for use in an industrial environment, in domestic dwellings and in
premises directly connected to a low-voltage power supply system
feeding buildings for domestic use.
EXTRA PRECAUTIONS
- WELDING OPERATIONS:
- In environments with increased riskof electric shock;
- In conned spaces;
- In the presence of ammable or explosive materials;
MUST BE evaluated in advance by an “Expert supervisor” and
must always be carried out in the presence of other people
trained to intervene in emergencies.
All protective technical measures MUST be taken as provided
in 7.10; A.8; A.10 of the applicable standard EN 60974-9: Arc
welding equipment. Part 9: Installation and Use”.
- Welding MUST NOT be allowed if the welding machine or wire
feeder is supported by the operator (e.g. using belts).
- The operator MUST NOT BE ALLOWED to weld in raised positions
unless safety platforms are used.
- VOLTAGE BETWEEN ELECTRODE HOLDERS OR TORCHES: working
with more than one welding machine on a single piece or on
pieces that are connected electrically may generate a dangerous
accumulation of no-load voltage between two dierent electrode
holders or torches, the value of which may reach double the
allowed limit.
An expert coordinator must be designated to measuring the
apparatus to determine if any risks subsist and suitable protection
measures can be adopted, as foreseen by section 7.9 of the
applicable standard ”EN 60974-9: Arc welding equipment. Part 9:
Installation and Use”.
RESIDUAL RISKS
- OVERTURNING: position the welding machine on a horizontal
surface that is able to support the weight: otherwise (e.g. inclined
or uneven oors etc.) there is danger of overturning.
- IMPROPER USE: it is hazardous to use the welding machine for any
work other than that for which it was designed (e.g. de-icing mains
water pipes).
- Do not use the handle to hang the welding machine.
… 5 …


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