Telwin LINEAR 350I Bedienungsanleitung Seite 5

ENGLISH
1. GENERAL SAFETY CONSIDERATIONS FOR ARC WELDING ......................................... 5
2. INTRODUCTION AND GENERAL DESCRIPTION .............................................................. 6
2.1 MAIN CHARACTERISTICS ............................................................................................ 6
2.2 OPTIONAL ACCESSORIES ........................................................................................... 6
3. TECHNICAL DATA ............................................................................................................... 6
3.1 DATA PLATE ................................................................................................................... 6
3.2 OTHER TECHNICAL DATA ............................................................................................ 6
4. DESCRIPTION OF THE WELDING MACHINE .................................................................... 6
4.1 CONTROL, ADJUSTMENT AND CONNECTION DEVICES .......................................... 6
4.1.2 WELDING MACHINE CONTROL PANEL ............................................................. 6
5. INSTALLATION . .................................................................................................................... 6
5.1 POSITIONING THE WELDING MACHINE ..................................................................... 6
5.2 CONNECTION TO THE MAIN POWER SUPPLY .......................................................... 6
5.2.1 Plug and outlet....................................................................................................... 6
5.3 WELDING CIRCUIT CONNECTION .............................................................................. 6
5.3.1 Recommendations................................................................................................. 6
INVERTER WELDING MACHINE FOR MMA WELDING, FOR INDUSTRIAL AND
PROFESSIONAL USE.
Note: The term "welding machine" will be used in the text that follows.
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.
- If a liquid cooling unit is present, filling operations must be carried out with the
welding machine off and disconnected from the power supply.
- Do not weld on containers or piping that contains or has contained flammable
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 flammable 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 electric insulation that is suitable for the torch, the workpiece and any
metal parts that may be placed on the ground and nearby (accessible).
This can normally be done by wearing gloves, footwear, head protection and
clothing that are suitable for the purpose and by using insulating boards or
mats.
- Always protect your eyes with the relative filters, 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 fire-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-reflective
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).
ELECTRIC AND MAGNETIC FIELDS MAY BE DANGEROUS
Electric current flowing through any conductor causes localized electric and
magnetic fields (EMF). Welding current creates an EMF field around welding
and welding equipment.
EMF fields may interfere with some medical implants (e.g. pacemakers,
respiratory equipment, metallic prostheses etc.).
Protective measures for persons wearing medical implants have to be taken.
INDEX
page
5.3.2 WELDING CIRCUIT CONNECTIONS IN MMA MODE ......................................... 6
5.3.2.1 Connection of the electrode-holder clamp welding cable ......................... 7
5.3.2.2 Connecting the welding current return cable ............................................ 7
6. MMA WELDING: PROCESS DESCRIPTION . ...................................................................... 7
6.1 GENERAL PRINCIPLES................................................................................................. 7
6.2 PROCEDURE ................................................................................................................. 7
7. MAINTENANCE .................................................................................................................... 7
8. TROUBLESHOOTING .......................................................................................................... 7
For example, access restrictions for passers-by or individual risk assessment
for welders.
This welding machine complies with technical product standards for exclusive
use in an industrial environment for occupational use. It does not assure
compliance with the restrictions for use by layman.
All operators should follow the rules listed herebelow, in order to minimize
exposure to EMF fields from the welding circuit:
- route the welding cables together. Secure them with tape when possible;
- place your trunk and head as far away as possible from the welding circuit;
- never coil welding cables around metal objects or your body;
- do not place your body between welding cables;
- keep welding cables on the same side of your body;
- connect the work clamp to the work piece as close as possible to the area
being welded;
- do not work next to welding power sources;
- all operators should keep the required minimum distances as given in the EMF
data sheet;
- distance from the EMF source to a point beyond which the exposure is less
than 20% of the lowest permissible value: d = 30 cm.
- 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 riskof electric shock;
- In confined spaces;
- In the presence of flammable 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 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".
- The use of the machine must be limited to the operator only.
- The operator must disconnect the cable and the electrode holder from the
machine once the MMA welding is over.
- The area around the welding machine must be forbidden to third parties. It
also should not be left unattended.
- The torches not in use should be stored in their housing.
RESIDUAL RISKS
- OVERTURNING: position the welding machine on a horizontal surface that is
able to support the weight: otherwise (e.g. inclined or uneven floors etc.) there
is danger of overturning.
- It is forbidden to lift the trolley together with the welding machine, the wire
feeder and the cooling unit (when present).
- 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).
- IMPROPER USE: the use the welding machine by more than one operator at
the same time may be dangerous.
- MOVING THE WELDING MACHINE: Always secure the gas bottle, taking
suitable precautions so that it cannot fall accidentally (if used).
- 5 -
page