
5.3SITE
WARNING: Position the welding machine on a flat surface with sufficient
carrying capacity for the weight of the welding machine, to prevent tipping or
hazardous movement.
5.4CONNECTIONTOTHEMAINPOWERSUPPLY
PLUG AND OUTLET: (2P +T for 1ph, 3P +T for 3ph)
(TAB.1)
VOLTAGECHANGE
Fig. F
Warning!
Inthefactorythemachineissetatthehighestvoltageoftheavailablerange,e.g.
U 400V Voltage setting at the factory.
WARNING!
Failure to observe the above rules will make the (Class 1) safety system
installed by the manufacturer ineffective with consequent serious risks to
persons(e.g.electricshock)andobjects(e.g.fire).
5.5 CONNECTION OFTHEWELDING CABLES
WARNING! BEFORE MAKING THE FOLLOWING CONNECTIONS MAKE
SURETHEWELDING MACHINEISSWITCHEDOFFAND DISCONNECTEDFROM
THEPOWERSUPPLYOUTLET.
(TAB. 1)
Connectiontothegas bottle
Connectingtheweldingcurrentreturncable
Fig.H1
Connectingthetorch
Fig.H1, H3
Fig.H2, H4
5.6LOADINGTHEWIREREEL
WARNING! BEFORE STARTING THE OPERATIONS TO LOAD THE WIRE
MAKESURETHEWELDINGMACHINEISSWITCHEDOFF ANDDISCONNECTED
FROMTHEMAINPOWERSUPPLYOUTLET.
Fig. I
(1) (2)
(2)
(3)
WARNING! During these operations the wire is live and subject to
mechanical stress; therefore if adequate precautions are not taken the wire
couldcausehazardouselectricshock,injuryandstriking ofelectricarcs:
5.7LOADINGTHEWIREREELONTOTHESPOOLGUN
WARNING! BEFORE STARTING THE OPERATIONS TO LOAD THE WIRE
MAKESURETHEWELDINGMACHINEISSWITCHEDOFF ANDDISCONNECTED
FROM THE MAIN POWER SUPPLY OR THAT THE SPOOL GUN IS
DISCONNECTEDFROMTHEWELDINGMACHINE.
Fig. L
(1)
(2)
(2)
(3)
Fig. H1-M
NOTE:
6.1WELDINGWITHTHEMIGTORCHFig.B, C
(Fig.N)
Important:
Locate the welding machine in an area where openings for cooling air are not
obstructed (forced circulation with fan), leave at least 250mm free space around the
welding machine; check that conductive dusts, corrosive vapours, humidity etc., will
notenterweldingmachine.
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- Before making any electrical connection, make sure the rating data of the welding
machine correspond to the mains voltage and frequency available at the place of
installation..
- The welding machine should only be connected to a power supply system with the
neutralconductorconnectedtoearth.
connect a normalised plug
having sufficient capacity- to the power cable and prepare a mains outlet fitted with
fuses or an automatic circuit-breaker;the special earth terminal should be connected
to the earth conductor (yellow-green) of the power supply line.Table 1 shows
the recommended delayed fuse sizes in amps, chosen according to the max.nominal
current supplied by the welding machine, and the nominal voltage of the main power
supply.
To carry out voltage change operations (only the 3-phase version), take off the panel
to gain access to the inside of the machine, and prepare the voltage change terminal
board so that the connection indicated on the special indicator plate corresponds to
theavailablepowersupplyvoltage.
Reassemblethepanelcarefullyusingtheappropriatescrews.
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Table 1 gives the recommended values for the welding cables (in mm )
dependingonthemaximumcurrentsuppliedbytheweldingmachine.
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- Gasbottlecanbeloadedonweldingmachinebottlesupportplatform:max20Kg
- Screw the pressure reducing valve onto the gas bottle valve, inserting the
appropriate adapter supplied as an accessory, for when the gas used is Argon or
an Argon /CO mixture.
- Connect the gas inlet pipe to the pressure-reducing valve and tighten the band
supplied.
- Loosen the adjustment ring nut on the pressure-reducing valve before opening the
bottlevalve.
Connect the welding current return cable to the piece to be welded or to the metal
benchonwhichitrests,ascloseaspossibletothejoinbeingmade.
Engage the torch (1) with its dedicated connector (2) by tightening the locking ring
manually as far down as it will go. Prepare the wire for loading the first time by
dismantlingthenozzleandthecontacttubetoeaseitsexit.
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MAKE SURETHATTHEWIRE FEEDER ROLLERS,THEWIRE GUIDE HOSE AND
THE CONTACTTIP OFTHE TORCH MATCH THE DIAMETER ANDTYPE OF WIRE
TO BE USED AND MAKE SURE THAT THESE ARE FITTED CORRECTLY. WHEN
INSERTINGANDTHREADINGTHEWIREDONOTWEARPROTECTIVEGLOVES.
- Open the reel compartment door
- Positionthewirereelon thespindle,holdingtheend ofthewireupwards;makesure
thetabforpullingthespindleiscorrectlyseatedinitshole .
- Releasethepressurecounter-rollerandmoveitawayfromthelowerroller .
- Free the end of the wire and remove the distorted end with a clean cut and no burr;
turnthereelanti-clockwiseandthreadtheendofthewireintothewire-guideinfeed,
pushingit50-100mmintothewireguideofthetorchfitting .
- Re-position the counter-roller, adjusting the pressure to an intermediate value, and
makesurethatthewireiscorrectlypositionedinthegrooveofthelowerroller .
- Use the adjustment screw located at the centre of the spindle to apply a slight
brakingpressureonthespindleitself.
- Removethenozzleandcontacttip.
- Insert the welding machine plug into the power outlet, switch on the welding
machine, press the torch button and wait for the end of the wire to run right through
thewireguidehoseandprotrude by100-150mmfromthefrontofthetorch,release
thebutton.
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- Donotdirectthemouthpieceofthetorchtowardspartsofthebody.
- Keepthetorchawayfromthegasbottle.
- Re-fitthecontacttipandthenozzleontothetorch.
- Check that wire feed is regular; set the roller and spindle braking pressure to the
minimumpossiblevaluesmakingsurethatthewiredoesnotslideinthegrooveand
whenfeedishaltedtheloopsofwirearenotloosenedbyexcessivereelinertia
- Cuttheendofthewiresothat10-15mmprotrudefromthenozzle.
- Closethereelcompartmentdoor
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MAKE SURE THE WIRE PULLER ROLLERS, THE WIRE GUIDE HOSE AND THE
SPOOL GUN CONTACTTUBE HAVE SUITABLE DIAMETERS CORRESPONDING
TO THAT OFTHE WIRETO BE USED AND MAKE SURETHEY ARE ASSEMBLED
CORRECTLY.DO NOT WEAR PROTECTIVE GLOVESWHENTHREADING INTHE
WIRE.
- Removethecoverbyundoingtheappropriatescrew .
- Positionthewirereelonthereelholder.
- Freethepressurecounter-rollerandmoveitawayfromthelowerroller .
- Free the end of the wire, cut off the distorted end with a clean cut leaving no burrs;
turn the reel anti-clockwise and thread the end of the wire into the wire-guide
infeed,pushingit50-100mminsidethelance .
- Reposition the counter-roller, adjusting the pressure to an intermediate value and
makesurethewireiscorrectlypositionedinthelowerrollerrecess .
- Brakethereelholderslightlybyadjustingtheappropriatescrew.
- Switchontheweldingmachine,puttingtheswitchto(I),pressthespoolgunbutton
andwaituntiltheendofthewirerunsthroughthecompletewireguidehoseand10-
15cmcomesoutofthefrontofthetorchthenreleasethetorchbutton.
- With the Spool gun connected, switch on the machine, press the spool gun button
andwaitfortheendofthewiretopasscompletelythroughthewireguidehoseand
for10-15cmtocomeoutofthefrontofthetorch,releasethetorchbutton.
Onlyforthe3-phaseversion:
Insert the earth outlet in the desired quick (-) connector, depending on the material to
bewelded
- quickconnector(-)withmax. reactanceforaluminium materialandderivative
alloys(Al),copperalloys(CuAl/CuSi).
- quick connector (-) with min. reactance for stainless steel (SS), carbon steel
andlowalloys(Fe).
- Connectthereturncabletothepiecebeingwelded.
- Turnonandadjusttheprotectivegasusingthepressurereducingvalve(5-7l/min)
Attheendofthejob,remembertoturnofftheprotectivegas.
- Switchontheweldingmachine,
- Selectthetypeofmaterial,thetypeofgasandthewirediameter bypressingbuttons
respectively.
- Settheweldingcurrentbymeansoftheswitchandrotaryswitch(ifpresent) .
- The display will show the welding current corresponding to the setting that has just
been made. Pressing button will show the corresponding factory setting for the
wirefeedrate(LED DEFAULTon).
NOTE: ensure good welding results can be ensured by varying the wire feed rate
within a preset interval. This interval is indicated by LED DEFAULT lighting up;
outsidetheDEFAULTintervaltheLEDwillgooff.
- Selecttheweldingmodebypressingbutton .
- Pressthetorchbuttontostartwelding.
NOTE:duringweldingthedisplaywillshowtheactualvalueofthecurrent.
- Wirefeedratecanbemodifiedbyturningknob(7),andthedisplaywillinstantlyshow
the corresponding value; the current reading will re-appear as soon as the
adjustmenthasbeencompleted.
for each position of the switch, the welding machine will store all the
parametersforthe lastweldingjob tobecarriedout (material,gas,wirediameter, wire
feedrate).
1⇐
2
2
6.WELDING:DESCRIPTIONOFTHEPROCEDURE
,,
Connectiontothewirefeeder
Fig.G
Connecting the spool gun
(3) (4)
(5)
(6)
- Carryoutconnectionswiththeelectricalgenerator(rearpanel):
- cableforweldingcurrenttofastsocket(+)
- controlcabletoappropriateconnector.
- If the use of an extension cable is required, ensure that the connectors are firmly
tightenedinordertopreventoverheatingandlossofefficiency.
- Connectthegaspipefromthepressurereducingvalveonthecylinderandlockitwith
thebandsupplied.
Connectthespool gun to the centralised torch connection screwing the ringnut
right down to fasten it.Theninsertthe control cable connector in thespecialsocket
.Theweldingmachinewillrecognisethespoolgunautomatically.
(onlyforversionwithseparatewirefeeder)
-12-