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Wear fireproof gloves, footwear and clothing to protect the skin from the rays produced
by the welding arc and from sparks. Do not wear greasy garments as a spark could set
fire to them. Use protective screens to protect people nearby.
Do not allow bare skin to come into contact with hot metal parts, such as the torch,
electrode holder grippers, electrode stubs, or freshly welded pieces.
Metal-working gives off sparks and splinters. Wear safety goggles with protective side
eye guards.
Welding sparks can trigger fires.
Do not weld or cut anywhere near inflammable materials, gasses or vapours.
Do not weld or cut containers, cylinders, tanks or piping unless a qualified technician
or expert has checked that it is possible to do so, or has made the appropriate
preparations.
Remove the electrode from the electrode holder gripper when you have completed
the welding operations. Make sure that no part of the electrode holder gripper electric
circuit touches the ground or earth circuits: accidental contact could cause overheating
or trigger a fire.
EMF Electromagnetic Fields
Welding current creates electromagnetic fields (EMF) near the welding circuits and
the welder. Electromagnetic fields may interfere with medical prostheses such as
pacemakers.
Suitable and sufficient measures should be implemented to protect those operators
having such aids. For instance, they should not be allowed to enter that area where
welding equipment is used. Any operator having such aids should consult their doctor
before coming close to an area where welding equipment is used.
This device meets the specific requirements of the product technical standard and is
intended for professional use in an industrial environment only. Compliance to expected
limits for human exposure to electromagnetic fields at home is not ensured.
Follow these strategies to minimise exposure to electromagnetic fields (EMF):
Do not place your body between the welding cables. Both welding cables should be on
the same side of your body.
Twist both welding cables together and secure them with tape when possible.
Do not wrap the welding cables around your body.
Connect the earth cable to the workpiece as close as possible to the area to be
welded.
Do not work with the welder hanging from your body.
Keep your head and trunk as far as possible from the welding circuit. Do not work
close to the welder, or seated or leaning on it. Minimum distance: Fig 7 Da = cm 50;
Db = cm.20
Class A equipment
This equipment has been designed to be used in professional and industrial
environments.
If this equipment is used in domestic environments and those directly connected to a
low voltage power supply network which supplies buildings used for domestic purposes,
it may be difficult to ensure compliance to electromagnetic compatibility as the result of
conducted or radiated disturbances.
Welding in conditions of risk
If welding needs to be done in conditions of risk (electric discharges, suffocation, the
presence of inflammable or explosive materials), make sure that an authorised expert
evaluates the conditions beforehand. Make sure that trained people are present who
can intervene in the event of an emergency. Use the protective equipment described in
5.10; A.7; A.9 of the IEC or CLC/TS 62081 technical specification.
If you are required to work in a position raised above ground level, always use a safety
platform.
If more than one welding machine has to be used on the same piece, or in any case on
pieces connected electrically, the sum of the no-load voltages on the electrode holders
or on the torches may exceed the safety levels. Make sure that an authorised expert
evaluates the conditions beforehand to see if such risk exists and adopt the protective
measures described in 5.9 of the IEC or CLC/TS 62081 technical specification if
required.
Additional warnings
Do not use the welding machine for purposes other than those described, for example
to thaw frozen water pipes.
Place the welding machine on a flat stable surface, and make sure that it cannot move.
It must be positioned in such a way as to allow it to be controlled during use but without
the risk of being covered with welding sparks.
Do not lift the welding machine. No lifting devices are fitted on the machine.
Do not use cables with damaged insulation or loose connections.
Description of the welding machine
The machine is a current generator for manual metal arc welding (MMA, with coated
electrodes) and TIG welding with a torch suitable for both LIFT or HF arc striking.
The welding machine is built using electronic INVERTER technology.
The delivered current is direct.
The static output of the current generator is of a drooping type.
The electrical characteristic of the transformer is of the falling type.
Main parts Fig. 1
A)
Power cable
B)
Connector for remote (foot pedal) control
C)
Gas hose connection
D)
Welding current adjustment
E)
HOT START adjustment
F)
MMA/TIG LIFT/TIG HF selector
G)
TIG 2T/TIG 4T selector
950476-03 0/06/2
All manuals and user guides at all-guides.com
H1) Remote (foot pedal) control connection pilot lamp
H2) Thermal cutout signal
H3) Fault indicator pilot lamp
I)
I1)
L)
M)
N)
A data plate is affixed to the welding machine. Fig. 2 shows an example of this plate.
A)
B)
C)
D)
E)
F)
G)
H)
I)
J)
K)
L)
M)
Connections to the mains must be made by expert or qualified personnel.
Make sure that the welding machine is switched off and the plug is not in the power
socket before carrying out this procedure.
Make sure that the power socket that the welding machine is plugged into is protected
by safety devices (fuses or automatic switch) and grounded.
Assembly and electrical connections
Assembly the detached parts found in the packaging (Fig.5).
Check that the electrical supply delivers the voltage and frequency corresponding to the
welding machine and that it is fitted with a delayed fuse suited to the maximum delivered
rated current (I2max) Fig. 3,1.
Plug. If the welding machine is not fitted with a plug, fit a normalised plug (2P+T for 1Ph)
of suitable capacity to the power cable Fig.3,2.
Connection to motor generators
Some welding machines may be powered by a motor generator (see symbol on data
plate). Make sure that this has a power of at least 6 kVA and does not deliver a voltage
greater than 270V.
Preparing the welding circuit MMA
Connect the ground lead** to the welding machine and to the piece to be welded, as
close as possible to the point to be welded.
Connect the cable with the electrode holder gripper** to the welding machine and mount
the electrode on the gripper. Refer to the electrode manufacturer's instructions concerning
connection and welding current.
Preparing the welding circuit TIG
Connect the ground lead** to the welding machine and to the piece to be welded, as
close as possible to the point to be welded.
Connect the TIG torch** power connector to the negative attachment on the welding
machine and mount the electrode.
Connect the torch control connector into the connector "N" on the front panel.
Connect the TIG torch gas hose to the gas fitting "M" on the front panel.
6
STAND BY/ON switch
STAND BY /ON pilot lamp
Couplings for welding cables / torch coupling
Torch welding gas fitting
TIG torch 3-pin socket
Technical data
Constructor name and address
European reference standard for the construction and safety of welding
equipment
Symbol of the welding machine internal structure
Symbol of the foreseen welding process: D1: MMA welding; D2: TIG welding
Symbol of the continuous current delivered.
Input power required:
˜ alternate single phase voltage, frequency: F1: from electrical power supply; F2:
from motor generator
Level of protection from solids and liquids
Symbol indicating the possibility to use the welding machine in environments
potentially subject to electric discharges
Welding circuit performance
U0V
Minimum and maximum open circuit voltage (open welding circuit).
I2, U2 Current and corresponding normalised voltage delivered by the welding
machine.
X
Duty cycle. Indicate how long the welding machine can work for and how
long it must rest for in order to cool down. The time is expressed in % on
the basis of a 10 minute cycle (e.g. 60% means 6 min. work and 4 min.
rest).
A/V
Current adjustment field and corresponding arc voltage.
Power supply data
U1
Input voltage (permitted tolerance: +/- 10%)
I1 eff Effective absorbed current
I1 max Maximum absorbed current
Serial number
Weight
Safety symbols: Refer to Safety Warnings
Starting up
The requirements set out in the IEC/EN61000-3-12 standard do not apply to this
equipment. If this equipment is connected to low voltage power supply network, either
the installer or the user is responsible for checking that this can be done (consult the
distribution system operator if required).
In order to comply with the requirements set out in the EN61000-3-11 (Fliker) standard,
it is advisable to connect the welder to the supply network interface points having an
impedance lower than the reference Zmax = Fig.3,4.
In welding machines that deliver direct current, most of the electrodes are connected
to the positive attachment, and only some electrodes (such as Rutile coated ones)
are connected to the negative attachment.
The recommended sections (mm2) of the welding cable, based on the maximum
delivered rated current (I2 max), are shown in Fig. 3,3.
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