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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.
(Refer also to the "IEC TECHNICAL SPECIFICATION or CLC/TS
62081": INSTALLATION AND USE OF EQUIPMENT FOR ARC
WELDING).
-
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.
-
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 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.
,
*
-
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 using masks or helmets with special
actinic glass.
Use special fire-resistant protective clothing and do not allow
the skin to be exposed to the ultraviolet and infrared rays
produced by the arc; other people in the vicinity of the arc
should be protected by shields of non-reflecting curtains.
-
The electromagnetic fields generated by the welding process
may interfere with the operation of electrical and electronic
equipment.
Users of vital electrical or electronic devices (e.g. pace-
makers, respirators etc.) should consult a doctor before
stopping in the vicinity of areas where this welding machine
is used.
Users of vital electrical or electronic devices should not use
the welding machine.
-
This welding machine complies with the requirements of the
technical standard for the product for use only and
exclusively in industrial environments and for professional
purposes. It is not guaranteed to meet electromagnetic
compatibility requirements in the home.
EXTRA PRECAUTIONS
-
WELDING OPERATIONS:
- 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
must always be carried out in the presence of other people
trained to intervene in emergencies.
Technical protection measures MUST BE taken as described
in 5.10; A.7; A.9. of the "IEC TECHNICAL SPECIFICATION or
CLC/TS 62081".
- 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 use measuring instruments to
determine the existence of a risk and should take suitable
protection measures as detailed in 5.9 of the "IEC TECHNICAL
SPECIFICATION or CLC/TS 62081".
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.
-
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 up the welding machine.
-
The only permitted lifting method is that described in the
"INSTALLATION" section of this manual.
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
electrodes (rutile, acid, basic).
STANDARD ACCESSORIES:
- Wheels kit.
OPTIONAL ACCESSORIES:
- MMA welding Kit.
3. TECHNICAL DATA
DATA PLATE
The most important data regarding use and performance of the
welding machine are summarised on the rating plate and have the
following meaning:
1- Protection rating of the covering.
2- Symbol for power supply line:
3~: three phase alternating voltage.
3- Symbol for welding procedure provided.
4- Symbol for internal structure of the welding machine.
5- EUROPEAN standard of reference, for safety and construction of
arc welding machines.
6- Manufacturer's serial number for welding machine identification
(indispensable for technical assistance, requesting spare parts,
discovering product origin).
7- Symbol S: indicates that welding operations may be carried out in
environments with heightened risk of electric shock (e.g. very
close to large metallic volumes).
8- Performance of the welding circuit:
- 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
can supply the corresponding current (same column). It is
expressed as %, based on a 10 min. cycle (e.g. 60% = 6
minutes working, 4 minutes pause, and so on).
If the usage factors (on the plate, referring to a 40°C
environment) are exceeded, the thermal safeguard will trigger
(the welding machine will remain in stand-by until its
temperature returns within the allowed limits).
- A/V-A/V: shows the range of adjustment for the welding current
(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.
1 max
- I : : effective current supplied.
1eff
10-
: Size of delayed action fuses to be used to protect the
power line.
11- Symbols referring to safety regulations, whose meaning is given in
chapter 1 "General safety considerations for arc welding".
Note: The data plate shown above is an example to give the meaning
- 3 -
Fig. A
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