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EXTRA PRECAUTIONS
- WELDING OPERATIONS:
INSTRUCTION MANUAL
- In environments with increased risk of electric shock
- In confined spaces
- In the presence of flammable or explosive materials
MUST BE evaluated in advance by an “Expert supervisor” and
WARNING! BEFORE USING THE WELDING MACHINE READ THE
must always be carried out in the presence of other people
INSTRUCTION MANUAL CAREFULLY.
trained to intervene in emergencies.
Technical protection measures MUST BE taken as described
ARC WELDING MACHINES FOR COATED ELECTRODES (MMA)
in 5.10; A.7; A.9. of the “IEC TECHNICAL SPECIFICATION or
FOR INDUSTRIAL AND PROFESSIONAL USE.
CLC/TS 62081”.
Note: In the following text the term “welding machine" will be used.
- The operator MUST NOT BE ALLOWED to weld in raised
positions unless safety platforms are used.
- VOLTAGE BETWEEN ELECTRODE HOLDERS OR TORCHES:
1. GENERAL SAFETY CONSIDERATIONS FOR ARC WELDING
working with more than one welding machine on a single
The operator should be properly trained to use the welding
piece or on pieces that are connected electrically may
machine safely and should be informed about the risks related to
generate a dangerous accumulation of no-load voltage
arc welding procedures, the associated protection measures
between two different electrode holders or torches, the value
and emergency procedures.
of which may reach double the allowed limit.
(Refer also to the “IEC TECHNICAL SPECIFICATION or CLC/TS
An expert coordinator must use measuring instruments to
62081”: INSTALLATION AND USE OF EQUIPMENT FOR ARC
determine the existence of a risk and should take suitable
WELDING).
protection measures as detailed in 5.9 of the “IEC TECHNICAL
SPECIFICATION or CLC/TS 62081”.
- Avoid direct contact with the welding circuit: the no-load
voltage supplied by the welding machine can be dangerous
RESIDUAL RISKS
under certain circumstances.
- OVERTURNING: position the welding machine on a
- When the welding cables are being connected or checks and
horizontal surface that is able to support the weight:
repairs are carried out the welding machine should be
otherwise (e.g. inclined or uneven floors etc.) there is
switched off and disconnected from the power supply outlet.
danger of overturning.
- Make the electrical connections and installation according to
the safety rules and legislation in force.
- IMPROPER USE: it is hazardous to use the welding machine
- The welding machine should be connected only and
for any work other than that for which it was designed (e.g. de-
exclusively to a power source with the neutral lead connected
icing mains water pipes).
to earth.
- Make sure that the power supply plug is correctly connected
- Do not use the handle to hang up the welding machine.
to the earth protection outlet.
- Do not use the welding machine in damp or wet places and do
- The only permitted lifting method is that described in the
not weld in the rain.
“INSTALLATION” section of this manual.
- Do not use cables with worn insulation or loose connections.
2.INTRODUCTION AND GENERAL DESCRIPTION
This welding machine is a power source for arc welding, made
specifically for MMA welding with direct current (DC) using coated
- Do not weld on containers or piping that contains or has
electrodes (rutile, acid, basic).
contained flammable liquid or gaseous products.
- Do not operate on materials cleaned with chlorinated
STANDARD ACCESSORIES:
solvents or near such substances.
- Wheels kit.
- Do not weld on containers under pressure.
OPTIONAL ACCESSORIES:
- Remove all flammable materials (e.g. wood, paper, rags etc.)
- MMA welding Kit.
from the working area.
- Provide adequate ventilation or facilities for the removal of
3. TECHNICAL DATA
welding fumes near the arc; a systematic approach is needed
DATA PLATE
in evaluating the exposure limits for the welding fumes, which
The most important data regarding use and performance of the
will depend on their composition, concentration and the
welding machine are summarised on the rating plate and have the
length of exposure itself.
following meaning:
Fig. A
1- Protection rating of the covering.
2- Symbol for power supply line:
,
*
3~: three phase alternating voltage.
- Use adequate electrical insulation with regard to the
3- Symbol for welding procedure provided.
electrode, the work piece and any (accessible) earthed metal
4- Symbol for internal structure of the welding machine.
parts in the vicinity.
5- EUROPEAN standard of reference, for safety and construction of
This is normally achieved by wearing gloves, shoes, head
arc welding machines.
coverings and clothing designed for this purpose and by
6- Manufacturer's serial number for welding machine identification
using insulating platforms or mats.
(indispensable for technical assistance, requesting spare parts,
- Always protect your eyes using masks or helmets with special
discovering product origin).
actinic glass.
7- Symbol S: indicates that welding operations may be carried out in
Use special fire-resistant protective clothing and do not allow
environments with heightened risk of electric shock (e.g. very
the skin to be exposed to the ultraviolet and infrared rays
close to large metallic volumes).
produced by the arc; other people in the vicinity of the arc
8- Performance of the welding circuit:
should be protected by shields of non-reflecting curtains.
- U : maximum no-load voltage (open welding circuit).
0
- I /U : current and corresponding normalised voltage that the
2 2
welding machine can supply during welding.
- X : Duty cycle: indicates the time for which the welding machine
- The electromagnetic fields generated by the welding process
can supply the corresponding current (same column). It is
may interfere with the operation of electrical and electronic
expressed as %, based on a 10 min. cycle (e.g. 60% = 6
equipment.
minutes working, 4 minutes pause, and so on).
Users of vital electrical or electronic devices (e.g. pace-
If the usage factors (on the plate, referring to a 40°C
makers, respirators etc.) should consult a doctor before
environment) are exceeded, the thermal safeguard will trigger
stopping in the vicinity of areas where this welding machine
(the welding machine will remain in stand-by until its
is used.
temperature returns within the allowed limits).
Users of vital electrical or electronic devices should not use
- A/V-A/V: shows the range of adjustment for the welding current
the welding machine.
(minimum-maximum) at the corresponding arc voltage.
9- Technical specifications for power supply line:
- U : Alternating voltage and power supply frequency of welding
1
machine (allowed limit ±10%):
- I : Maximum current absorbed by the line.
- This welding machine complies with the requirements of the
1 max
- I : : effective current supplied.
technical standard for the product for use only and
1eff
exclusively in industrial environments and for professional
10- : Size of delayed action fuses to be used to protect the
power line.
purposes. It is not guaranteed to meet electromagnetic
11- Symbols referring to safety regulations, whose meaning is given in
compatibility requirements in the home.
chapter 1 “General safety considerations for arc welding”.
Note: The data plate shown above is an example to give the meaning
- 3 -
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