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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.
-
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 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 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 flow of the welding current generates electromagnetic
fields (EMF) around the welding circuit.
Electromagnetic fields 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 fields in the
domestic environment.
The operator must adopt the following procedures in order to
reduce exposure to electromagnetic fields:
-
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 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
-
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).
2. INTRODUCTION AND GENERAL DESCRIPTION
This welding machine is a power source for arc welding, made
specifically for direct current (DC) .
The specific characteristics of this regulation system (INVERTER), i.e.
high speed and precise regulation, mean the welding machine gives
excellent results when welding both with coated electrodes (rutile,
acid, basic).
Regulation with the "inverter" system at the input of the power supply
line (primary) means there is a drastic reduction in the volume of both
the transformer and the levelling reactance. This allows the
construction of a welding machine with extremely reduced weight and
volume, enhancing its advantages of easy handling and
transportation.
OPTIONAL ACCESSORIES:
- MMA welding Kit.
- TIG welding Kit.
- Argon gas bottle adapter.
- Pressure reducing valve with gauge.
- TIG welding torch.
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:
- 4 -
Fig. A
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