Deca P-ARC 735 [7/44] Avertissements de sécurité
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Deca P-ARC 735 [7/44] Avertissements de sécurité

Deca P-ARC 840 [7/44] Avertissements de sécurité
6
950492-03 10/09/14
in which you are welding.
Do not exceed the welding service “X” shown on the technical plate, as any
overheating could damage the welding machine.
Remember to leave the welding machine to rest in order to allow it to cool down.
Recommendations for use
Only use an extension lead when absolutely necessary and providing it has an equal or
larger section to the power cable and is tted with a grounding conductor.
Do not block the welder air intakes. Do not store the welder in containers or on shelving
that does not guarantee suitable ventilation.
Do not use the welder in any environment in the presence of gas, vapours, conductive
powders (e.g. iron shavings), brackish air, caustic fumes or other agents that could
damage the metal parts and electrical insulation.
L The electric parts of the welder have been treated with protective resins. When used for
the rst time, smoke may be noticed; this is caused by the resin drying out completely.
The smoke should only last for a few minutes.
Maintenance
Switch off the welder and remove the plug from the power socket before carrying out any
maintenance operations.
Extraordinary maintenance to be carried out by expert staff or qualied electrical
mechanics periodically depending on use.
• Inspect the inside of the welder and remove any dust deposited on the electrical parts
(using compressed air) and the electronic cards (using a very soft brush and appropriate
cleaning products). • Check that the electrical connections are tight and that the insulation
on the wiring is not damaged. • Lubricate the moving parts of the transformer with high
temperature grease.
FR
Manuel d’instruction
Lire attentivement ce manuel d’instructions avant d’utiliser la soudeuse.
Les appareils de soudage à l’arc avec électrode enrobée MMA, ci-dessous appelés
“soudeuse”, ont été conçus pour un usage industriel et professionnel.
S’assurer que la soudeuse est installée et réparée par des personnes qualiées,
conformément aux lois et aux normes de prévention des accidents.
S’assurer que l’opérateur est instruit sur l’utilisation et les risques liés au procédé de
soudage à l’arc, ainsi que sur les mesures de protection et les procédures d’urgence
nécessaires.
Pour plus d’informations, consulter la brochure “Installation et utilisation des appareils de
soudage à l’arc” : IEC ou CLC/TS 62081.
Avertissements de sécurité
S’assurer que la prise d’alimentation à laquelle est branchée la soudeuse est protégée
par des dispositifs de sécurité (fusibles ou interrupteur automatique) et que la mise à
la terre a été effectuée.
S’assurer que la che et le câble d’alimentation sont en bon état.
S’assurer que la soudeuse est éteinte avant de brancher la che dans la prise
d’alimentation.
Éteindre la soudeuse et débrancher la che de la prise d’alimentation dès que l’opération
est terminée.
Éteindre la soudeuse et débrancher la che de la prise d’alimentation avant de brancher
les câbles de soudage, installer le l continu, remplacer des pièces de la torche ou du
dévidoir, effectuer les opérations d’entretien, déplacer la soudeuse (utiliser la poignée
qui se trouve sur cette dernière).
Les parties sous tension électrique ne doivent pas entrer en contact avec la peau nue ou
des vêtements mouillés. S’isoler électriquement de l’électrode, de la pièce à souder et de
toutes parties métalliques accessibles mises à la terre. Utiliser des gants, chaussures,
vêtements spéciques et des tapis isolants secs et ininammables.
Utiliser la soudeuse dans un local sec et aéré. Ne pas exposer la soudeuse à la pluie
et au soleil battant.
N’utiliser la soudeuse que lorsque tous les panneaux et écrans sont à leur place et
correctement montés.
Ne pas utiliser la soudeuse après l’avoir fait tomber ou l’avoir heurtée car elle pourrait
ne plus être able. La faire contrôler par une personne experte ou qualiée.
Éliminer les fumées de soudage grâce à une ventilation naturelle appropriée ou un
aspirateur de fumées. Utiliser une approche systématique pour déterminer les limites
d’exposition aux fumées de soudage (en fonction de leur composition, concentration
et durée d’exposition).
Ne pas souder de matériaux nettoyés avec des solvants à base de chlore ou de
substances analogues.
welding machines have directly connected cables).
Technical data
A data plate is afxed to the welding machine. Fig. 2 shows an example of this plate.
A) Constructor name and address.
B) European reference standard for the construction and safety of welding equipment.
C) Symbol of the welding machine internal structure.
D) Symbol of the foreseen welding process.
E) Symbol of delivered current: E1 alternate; E2 direct.
F) Input power required:
1˜ alternate single phase voltage; frequency.
3˜ alternate three-phase voltage; frequency.
G) Level of protection from solids and liquids.
H) Symbol indicating the possibility to use the welding machine in environments
potentially subject to electric discharges.
I)
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 eld and corresponding arc voltage.
J) Power supply data.
U1 Input voltage (permitted tolerance: +/- 10%).
I1 eff Effective absorbed current.
I1 max Maximum absorbed current.
K) Serial number.
L) Weight.
M) Safety symbols: Refer to Safety Warnings.
Starting up
Connections to the mains must be made by expert or qualied 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.
The device must be connected only to a supply system, with an earthed ‘neutral’ lead.
Assembly and electrical connections
¾ Assembly the detached parts found in the packaging Fig. 6.
¾ Check that the electrical supply delivers the voltage and frequency corresponding to the
welding machine and that it is tted with a delayed fuse suited to the maximum delivered
rated current (I2max) Fig. 3,1.
L (Only for three-phase models) 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).
L 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.
¾ Plug. If the welding machine is not tted with a plug, t a normalised plug (2P+T for 1Ph
and 3P+T for 3Ph) of suitable capacity to the power cable Fig.3,2.
¾ To select two supply voltages in those welding machines tted with a switch, make sure
that the limit switch is on and allows the use of only one voltage Fig. 4.
L The welding machines are set to the highest voltage at the factory.
Preparing the welding circuit
¾ 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.
¾ 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.
L In welding machines delivering alternate current, it is not important which connection
the electrode is connected to.
L 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.
L The recommended sections (mm2) of the welding cable, based on the maximum
delivered rated current (I2 max), are shown in Fig. 3,3.
** (This component may not be included with some models).
Welding process: description of controls and signals
Once you have put the welding machine into operation, switch it on and carry out the
required adjustments.
Adjusting the welding current
Select the welding current depending on the electrode, the joint and the welding position.
Indicatively, the currents to be used with the different electrode diameters are listed in
Fig. 5.
L Do not force the adjustment ywheel as this could damage the welding machine. Check
the adjustment on the current adjustment indicator.
L To strike the welding arc with the coated electrode, brush it onto the piece to be
welded and as soon as the arc is struck, hold it constantly at a distance equal to the
electrode diameter and at an angle of approximately 20 - 30 degrees in the direction

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