Description Of The Welding Machine - Deca JOB 220 LAB Manuel D'instruction

Manutenzione
Spegni la saldatrice ed estrai la spina dalla presa d'alimentazione prima di effettuare
operazioni di manutenzione.
Manutenzione ordinaria effettuabile dall'operatore periodicamente in funzione dell'uso.
• Controlla i collegamenti del tubo gas, del cavo torcia e del cavo massa. • Pulisci con
una spazzola di ferro l'ugello portacorrente ed il diffusore gas. Sostituiscili se sono
usurati. • Pulisci la saldatrice all'esterno con un panno umido.
Ad ogni sostituzione della bobina di filo:
• Controlla l'allineamento, la pulizia e lo stato di usura del rullino trainafilo Fig.7 • Asporta
la polvere metallica che si deposita sul meccanismo trainafilo. • Pulisci la guaina guidafilo
con solventi anidri e sgrassanti ed asciuga con aria compressa. • Controlla l'usura delle
Etichette di avvertenza. • Sostituisci le parti usurate.
Manutenzione straordinaria effettuabile da personale esperto o qualificato in ambito
elettromeccanico periodicamente, in funzione dell'uso.
• Ispeziona l'interno della saldatrice e rimuovi la polvere depositata sulle parti elettriche
(usa aria compressa) e sulle schede elettroniche (usa una spazzola molto morbida o dei
prodotti appropriati).
• Verifica che le connessioni elettriche siano ben serrate e che i cablaggi non abbiano
l'isolante danneggiato.
Instruction Manual
Read this Instruction manual and "Safety warnings" (950900) carefully before
using the welding machine.

Description of the welding machine

The welding machine is a current generator for continuous wire welding, commonly
known as MIG / MAG, suited to welding carbon or light alloy steels, stainless steel and
aluminium using protective gas.
The electrical characteristic of the transformer is flat (constant voltage).
The welding machine is a current transformer for manual arc welding using MMA coated
electrodes and TIG with a torch that strikes the arc on contact.
The delivered current is direct.
The electrical characteristic of the transformer is of the falling type.
The welding machine is built using electronic INVERTER technology.
This manual refers to a range of welding machines that differ in some of their
characteristics. Identify your model in Fig. 1.
Main parts Fig. 1
A) Spool compartment access door
B) Spool holder reel
C) Wire feeder
D) Power cable
E) Gas hose connection
F) ON/OFF switch
G) Special torch connector**
H) Torch connector
I) Couplings for welding cables.
M) Voltage change terminal board**
O) Sd card connector
P) Gas test function
Q) Wire load function
** (This component may not be included on some models).
Technical data
A data plate is affixed 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: D1: MIG; D2: TIG; D3 MMA.
E) Symbol of the continuous current delivered
F) Input power required:
1˜ alternate single 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 field 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
Technical data for torch and wire feeder Fig.8
950678/1-03 10/10/18
EN
Assembly and electrical connections
¾ Assembly the detached parts found in the packaging Fig.10.
¾ Check that the electrical supply delivers the voltage and frequency corresponding to
the welding machine and that it is fitted with an automatic switch suited to the maximum
delivered rated current (I2max) Fig. 9,1.
L
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 (Flicker) standard,
it is advisable to connect the welder to the supply network interface points having an
impedance lower than the reference Zmax = Fig.9,4.
¾ Power plug. The effective absorbed current "I1 eff" is indicated on the technical
plate of the welding machine, when it is used at maximum power. Connect the
welding machine to a normalized plug (2P+T per 1Ph) of capacity sufficient
to deliver maximum power. Fig 9,2. If a 16A plug is connected to the welding
machine, make sure that the effective "I1 eff" current required for the desired use is
adequate to the 16A plug capacity and the slow blow fuse of the system. Fig 3,2.
Preparing the welding circuit MIG
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 torch to the welding machine socket. Select the polarity of the torch**.
For selection follow the instructions in Fig.5 .
L
The torches with speed controls on the handle and Spool guns have a pin that must
be connected in the socket G Fig. 1.
Installing the continuous wire
For installation, follow the instructions in Fig. 3.
The material and diameter of the wire must correspond to the wire feeder roller, the
contact tip and the torch liner. If the measurements do not match, there may be problems
with the smooth running of the wire.
L
The pressure of the wire pressing knob is important for correct operation. If the wire
slips, there will be problems with the welding; if on the other hand it is too tight, it may
be deformed and will not run smoothly through the torch.
Wire load function
Press the button "Q" inside the coil compartment and then the button on the torch. The
wire is loaded even after releasing the button "Q" until the button on the torch is pressed.
Installing the protective gas cylinder** and pressure reducer**
„ Place the protective gas cylinder in an upright position, far away from the welding area.
Use the welding machine support or some other fixed part so that there is no risk of it
falling or being damaged.
For installation, follow the instructions in Fig. 4.
Gas test function
Press the button "P" inside the coil compartment. The solenoid valve remains open until
the button is pressed again, or it will close automatically after 30 seconds.
Preparing the welding circuit MMA
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.
Preparing the welding circuit TIG
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 TIG torch** power connector to the negative attachment on the welding
machine and mount the electrode. The torch must be fitted with a gas flow adjustment
valve.
¾ Connect the TIG torch gas pipe to the output of the pressure reducer mounted on an
ARGON protection gas cylinder.
L
The recommended sections (mm2) of the welding cable, based on the maximum
delivered rated current (I2 max), are shown in Fig. 9,3.
** (This component may not be included with some models).
Welding process: description of controls and signals
Refer to Quick guide (950678/2) annexed to this manual.
Sd card connector
The connector is useful for updating the software of the machine and uploading new
synergistic programs.
¾ Insert the sd card when the machine is off.
¾ Switch on the machine.
The software is loaded. At the end of the update the control panel gets back to the normal
status.
¾ Remove the sd card.
4
Starting up