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Telwin FORCE 170 Manual

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INSTRUCTION MANUAL
WARNING! BEFORE USING THE WELDING MACHINE READ
THE INSTRUCTION MANUAL CAREFULLY.
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 off and disconnected from the power supply outlet.
- Switch off 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.
- Keep the gas bottle (if used) away from heat sources,
including direct sunlight.
- 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.
This welding machine conforms to technical product standards
for exclusive use in an industrial environment for professional
purposes. It does not assure compliance with the basic limits
relative to human exposure to electromagnetic elds in the
domestic environment.
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. I).
- Class A equipment:
This welding machine conforms to technical product standards
for exclusive use in an industrial environment and for
professional purposes. It does not assure compliance with
electromagnetic compatibility 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 risk of 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”.
-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
different 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
- 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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