Weco Discovery 220T Evo User manual

Cod. 006.0001.2020
16/11/2021 V.2.1
Discovery 220T Evo/VRD Evo
Discovery 300T Evo/VRD Evo
Instruction manual
ENG
Translation of original instructions

Cod. 006.0001.2020
16/11/2021 V.2.1 Discovery 220T Evo/VRD Evo
Discovery 300T Evo/VRD Evo
2

Cod. 006.0001.2020
16/11/2021 V.2.1
Discovery 220T Evo/VRD Evo
Discovery 300T Evo/VRD Evo
3

Cod. 006.0001.2020
16/11/2021 V.2.1 Discovery 220T Evo/VRD Evo
Discovery 300T Evo/VRD Evo
4
1 INTRODUCTION
IMPORTANT!
This handbook must be consigned to the user prior to installation and commissioning of the unit.
Read the "General prescriptions for use" handbook supplied separately from this handbook before
installing and commissioning the unit.
The meaning of the symbols in this manual and the associated precautionary information are given in
the "General prescriptions for use”.
If the "General prescriptions for use" are not present, it is mandatory to request a replacement copy
from the manufacturer or from your dealer.
Retain these documents for future consultation.
LEGEND
DANGER!
This pictogram warns of danger of death or serious injury.
WARNING!
This pictogram warns of a risk of injury or damage to property.
CAUTION!
This pictogram warns of a potentially hazardous situation.
INFORMATION
This pictogram gives important information concerning the execution of the relevant operations.
 Thissymbolidentiesanactionthatoccursautomaticallyasaresultofapreviousaction.
 Thissymbolidentiesadditionalinformationorareferencetoadifferentsectionofthemanual
containing the associated information.
§ Thissymbolidentiesareferencetoachapterofthemanual.
*1 The symbol refers to the associated numbered note.
NOTES
Theguresinthismanualarepurelyguidelineandtheimagesmaycontaindifferenceswithrespectto
theactualequipmenttowhichtheyrefer.

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Discovery 300T Evo/VRD Evo
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1.1 INTRODUCTION
Discovery220T/300TEvo/VRDEvoisaninverter-basedweldingpowersourcecompletewithallthe
functionsrequiredforDCTIGandMMAweldingwithexcellentarccharacteristics.
Thesolidityofthecomponentsofthisunitmakesitareliableworkingcompanionforworkshopand
outdoor applications.
This unit is ideal for maintenance, food industry, hydraulics, oil pipelines and chemical plants.
TheparameterspresetintheDCTIGpulsedsynergiccurvesimplifyweldingbyregulationexclusively
of the current.
ThecurrentisadjustablealsofromtheUp-Downtorch.
Thesimplyandintuitiveinterfaceallowshighprecisionadjustmentswith50storableprograms.
Thewiderangeofadjustablepulsed frequencyincombination withthecomplementary parameters
(basecurrentanddutycycle)makesitpossibletoweldinslowandfastpulsedmode.
Accessories/ancillary devices that can be connected to the unit:
- manualremotecontrolforremoteadjustmentoftheweldingcurrent.
- foot-pedalremotecontrolforTIGtorcharcstrikingandremoteadjustmentofweldingcurrent.
- UP/DOWNtorchortorchwithpotentiometer.
- liquid cooler for TIG torches.
Consultyourdealerforanupdatedlistofaccessoriesandthelatestnewproductsavailable.

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2 INSTALLATION
DANGER!
Lifting and positioning
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
2.1 CONNECTIONS TO THE ELECTRICAL MAINS NETWORK
Themainspowersupplyfeaturestowhichtheequipmentshouldbeconnectedaregiveninchapter“12
TECHNICAL DATA” at page 57.
The machine can be connected to motorgenerators provided their voltage is stabilised.
Connect/disconnectthevariousdeviceswiththemachineswitchedoff.
2.2 FRONT PANEL
1234
○ Negativepoleweldingsocket.[Item1].
○ Connectorforgasfeedhose:gasowfromthepowersourcetothetorch.[Item2].
○ TIGTORCHcontrolconnector[Item3].
○ Positivepoleweldingsocket.[Item4].

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Discovery 300T Evo/VRD Evo
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2.3 REAR PANEL
1 2 4
5
○ Remotecontrolconnector[Item1].
○ Connectorforgasfeedhose:gasowfromthecylindertothepowersource[Item2].
○ Coolingunitpowerfeedingconnector[Item3].
• Voltage: 230 V a.c.
• Current output: 1.35 A
• IP protection rating: IP20 (cap open) / IP66 (cap closed)
DANGER!
High voltage!
If the socket is not connected to any devices always close the cap
○ WeldingpowersourceON/OFFswitch[Item4].
○ Powercable.[Item5].
• Length (outer side): 2,05 m
• Numberandcrosssectionofwires:3x2.5mm2(on 220T Evo/VRD Evo)/4x2.5mm2(on
300T Evo/VRD Evo)
• Powerplugtype:Schuko250Va.c./16A(on220T Evo/VRD Evo) / not supplied (on 300T
Evo/VRD Evo)

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2.4 PREPARING FOR MMA WELDING
1. SettheweldingpowersourceON/OFFswitchto“O”(unitswitchedoff).
2. Plugthepowercableplugintoamainssocketoutlet.
3. Choosetheelectrodebasedonthetypeofmaterialandthicknessoftheworkpiecetobewelded.
4. Insert the electrode in the electrode holder.
5. Connecttheelectrodeholdercabletotheweldingsocketbasedonthepolarityrequestedbythe
type of electrode used.
6. Connecttheplugofthegroundclamptotheweldingsocketonthebasisofthepolarityrequired.
7. Connecttheearthclamptotheworkpiecebeingprocessed.
DANGER!
Electric shock hazard!
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
8. SettheweldingpowersourceON/OFFswitchto“I”(unitpowered).
9. Selectthefollowingweldingmodeontheuserinterface:MMA
10.Settherequiredweldingparametervaluesontheuserinterface.
Whentheremotecontroller[RC]isconnectedandtherelativelockingscrewistightened,welding
current can be adjusted using the remote controller.
Thesystemisreadytostartwelding.
REAR VIEW FRONT VIEW
(polarity to basic electrode)
REMOTE
CONTROL

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2.5 PREPARING FOR TIG WELDING
NOTE: For the cooler to power source assembly procedure refer to the cooler instruction
manual.
1. SettheweldingpowersourceON/OFFswitchto“O”(unitde-energized).
2. Plugthepowercableplugintoamainssocketoutlet.
3. Connectthegashosefromtheweldinggascylindertothereargassocket.
4. Open the cylinder gas valve.
5. Choosetheelectrodebasedonthetypeofmaterialandthicknessoftheworkpiecetobewelded.
6. Insert the electrode in the TIG torch.
7. Connectthetorchplugtotheweldingsocketonthebasisofthepolarityrequiredbythetypeof
electrode in question.
8. Connecttheplugofthegroundclamptotheweldingsocketonthebasisofthepolarityrequired.
9. Connectthegashosefromtheweldingtorchtothefrontgassocket.
10.ConnecttheweldingtorchconnectortotheTIGtorchsignalsconnector.
11.Connecttheearthclamptotheworkpiecebeingprocessed.
12.SettheweldingpowersourceON/OFFswitchto“I”(unitpowered).
13.Selectthefollowingweldingmodeontheuserinterface:DCTIG
14.Pressthetorchtriggerwiththetorchwellclearofanymetalparts.Thisservestoopenthegas
solenoidvalvewithoutstrikingtheweldingarc.
15.Usetheowcontrolvalvetoadjusttheowofgasasrequiredwhilethegasisowingout.
16.Settherequiredweldingparametervaluesontheuserinterface.
Whentheremotecontrolpedalisconnectedandtherelativelockingscrewistightenedtheweld-
ingcurrentwillvaryinrelationtothepressureexertedonthepedal.
Thesystemisreadytostartwelding.
REAR VIEW FRONT VIEW
(polarity for tungsten electrode)
REMOTE
CONTROL

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3 USER INTERFACE
Discovery 220T Evo/VRD Evo - Discovery 300T Evo/VRD Evo
DYN arc
QST
M-TACK
MenuMenu
Q-SPOT
HF E1/S5
S3
L1
D1
USB S4S2S1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
SYNSYN
L13
CODE SYMBOL DESCRIPTION
L1
QST
DCTIGmode:illuminationshowsthatthefollowingparametercanbeset:Q-START
L2
DYN arc
DCTIGmode:illuminationshowsthatthefollowingparametercanbeset:DYNAMICARC
L3
M-TACK
DCTIGmode:illuminationshowsthatthefollowingparametercanbeset:MULTITACK
L4 DCTIGmode:illuminationshowsthatthefollowingparametercanbeset:ELECTRODEDIA-
METER (mm)
L5
HF
Illumination shows that the following function has been activated: HIGH FREQUENCYARC
STRIKE (HF)
L6 Illuminationshowsthatthefollowingfunctionhasbeenactivated:2strokeprocedure.
L7 Illuminationshowsthatthefollowingfunctionhasbeenactivated:4strokeprocedure.
L8 Illuminationshowsthatthefollowingfunctionhasbeenactivated:4strokeB-levelprocedure
L9
Q-SPOT
Illuminationshowsthatthefollowingfunctionhasbeenactivated:2strokespotprocedure(Q-
SPOT).
L10 ThisLEDilluminatestoshowthatthefollowingweldingmodeisselected:MMA
L11 ThisLEDilluminatestoshowthatthefollowingweldingmodeisselected:CONTINUOUSDC
TIG
L12 ThisLEDilluminatestoshowthatthefollowingweldingmodeisselected:PULSEDDCTIG
L13
SYN
ThisLEDilluminatestoshowthatthefollowingweldingmodeisselected:SYNERGICPULSED
DC TIG
When this is on, it means that the synergic mode is active and that the operator can set just the
weldingcurrent whilethe otherparametersareautomaticallyregulatedbythemachine.The
synergyisoptimisedforanglewelding.

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CODE SYMBOL DESCRIPTION
S1 DC TIG mode: Press the button to select the DC TIG special functions.
Possible choices: Q-START - DYNAMIC ARC - MULTI TACK - ELECTRODE DIAMETER
S2 Press the button to access the JOB MENU.
S3 DC TIG mode: This button selects the torch trigger procedure.
S4 Thisbuttonselectstheweldingmode.
E1/S5
MenuMenu
-Keepthebuttonpressedwhilepoweringonthepowersource:thebuttonopenstheSET-UP
menu.
-Pressandrelease:thebuttonselectstherstlevelmenuparameters.
-Holddownfor3seconds:thebuttonopensthesecondlevelmenu.Wheninthemenu,press
and release the button to select the parameters.
-Data setting: The encoder sets the value of the selected parameter.
-Duringtheweldingoperations:Theencodersetsthevalueofthefollowingparameter:WEL-
DING CURRENT
USB PortprovidedtoconnectaUSBmemorysticktoexport/importJOBs.
D1
IDatasetting:Thedisplayshowstheparametertobeset,itsvalueandthegraphicsymbolas-
sociated to it.
Welding:Thedisplayshowstheeffectiveamperesvalueduringwelding.
4 UNIT POWER-UP
SettheweldingpowersourceON/OFFswitchto“I”toswitchontheunit.
Themessageappearsonthefollowingdisplay:D1.
FX.X=softwareversion
300T
EVO
F.X.X
300T-VRD
EVO
F.X.X
Firstpower-uporpower-upsfollowingaRESETprocedure
Theweldingpowersourcesetsupforweldingwiththefactorypre-sets.
Subsequentpower-ups
Theweldingpowersourcesetsupforweldinginthelateststableweldingcongurationthatwasactive
atthetimeofpower-off.

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5 RESET (LOAD FACTORY SETTINGS)
DYN arc
QST
M-TACK
MenuMenu
Q-SPOT
HF E1/S5
S3
L1
D1
USB S4S2S1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
SYNSYN
L13
SET-UP (14/15)
-----------------------------------------------------
MAX CORR.UP OFF
COUNTERS *****
RESET PAR
C
B
A
OUTPUT
ACTIVATION
SELECTION
The reset procedure involves complete restoration of the default values, parameters and memory set-
tings set in the factory.
Theresetprocedureisusefulinthefollowingcases:
- Toomanychangesmadetotheweldingparameterssouserndsitdifculttorestoredefaults.
- Unidentiedsoftwareproblemsthatpreventtheweldingpowersourcefromfunctioningcorrectly.
PARTIAL RESET
Theresetprocedureinvolvesrestorationoftheparametervaluesandsettings,exceptthefollowing
settings:
- Settings of the SETUP menu.
- Saved JOBS.
TOTAL RESET
The reset procedure involves complete restoration of the default values, parameters and memory set-
tings set in the factory.
Allmemorylocationswillberesetandhenceallyourpersonalweldingsettingswillbelost!
A
○ SettheweldingpowersourceON/OFFswitchto“O”toswitchtheunitoff.
○Holding the S5 button
MenuMenu
down,turnthepowersourceswitchto“I”tostarttheunit[
SIMULTANEOUS ACTIONS ].
○Display D1showstheSET-UP MENU.

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B
○ Selectwithencoder E1
MenuMenu
thefollowingsetting: RESET.
○Press the S5 button
MenuMenu
.
○ Selectwithencoder E1
MenuMenu
thefollowingsetting: PAR (partial) o TOT (total).
○Press the S5 button
MenuMenu
.Amessagerequestingtoconrmisdisplayed.
C
○Exit with conrmation
- Press the S5 button
MenuMenu
.
- Wait for the memory clear procedure to terminate.
- Press the S1 button toexittheSET-UPmenu.
○Exit without conrmation
- Press the S1 button .
- Press the S1 button toexittheSET-UPmenu.

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6 SET UP (INITIAL SET-UP OF THE WELDING POWER SOURCE)
DYN arc
QST
M-TACK
MenuMenu
Q-SPOT
HF E1/S5
S3
L1
D1
USB S4S2S1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
SYNSYN
L13
A
C
B
SET-UP (1/15)
-----------------------------------------------------
LANGUAGE ENG
COOLING TYPE AUT
STARTING CURRENT %
ACTIVATION
OUTPUT
A
○ SettheweldingpowersourceON/OFFswitchto“O”toswitchtheunitoff.
○Holding the S5 button
MenuMenu
down,turnthepowersourceswitchto“I”tostarttheunit[
SIMULTANEOUS ACTIONS ].
○ DisplayD1showstheMENU SET-UP.
B
○ Selectwithencoder E1
MenuMenu
the setting to be edited.
○Press the S5 button
MenuMenu
toconrm.
○Using the E1
MenuMenu
, edit the value of the selected setting. The value is saved automatically.
○Press the S5 button
MenuMenu
. It returns to the list of settings..
C
○Exit with conrmation
- Press the S1 button .
SELECTION

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Tab. 1 - Impostazioni di Setup
IMPOSTAZIONE MIN DEFAULT MAX NOTE
LANGUAGE EN ENGLISH
ITALIANO
FRANÇAIS
DEUTSCH
ESPAÑOL
PORTUGUES
DUTCH
CESKY
SRBSKI
POLSKI
SUOMI
COOLING TYPE ON AUT OFF
STARTING CURRENT % % A
FINAL CURRENT % % A
HF CURRENT 20 A SYN 200 A
HF TIME 0.5 s 2.0 s 3.0 s
PULSED TYPE SLOW FAST FAST
PILOT ARC OFF ON ON
ENABLE READ I. OFF ON ON
TORCH TYPE 1 1 2
PEDAL TYPE 2 2 9
MAX CURR. UP
COUNTERS
RESET PAR TOT TOT
SERVICE VAL VAL CAL
ER ACTIVATION GROUP
○ ON=Thecoolerisalwaysrunningwhenthepowersourceisswitchedon.Thismodeispreferable
forheavydutyandautomaticweldingprocedures.
○ OFF=Thecoolerisalwaysdisabledbecauseanair-cooledtorchisinuse.
○ AUT=Whentheunitisswitchedonthecoolerisswitchedonfor15s.Duringweldingprocedures
thecoolerrunsconstantly.Whenweldingisterminatedthecoolercontinuestorunfor90s+a
numberofsecondsequivalenttotheaveragecurrentvalueshownusingtheHOLDfunction.
Torch loading
WARNING!
Make sure the torch in use is correctly sized in relation to the welding current required and for
the available and selected cooling type. This prevents the risk of burns to which the operator is
potentially exposed, potential faults, and irreversible damage to the torch and the system.
If a torch is installed or replaced while the unit is running, the circuit of the newly installed torch
must be lled with coolant to avoid the risk of damage to the torch in the case of high voltage arc
strikes without any liquid in the circuit.

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Power-up with operation of the cooler set to “ON” or “AUT” mode
○A check is performed automatically of the presence of liquid in the cooling circuit and the cooler
isswitchedonfor15seconds.
○ Ifthecoolantcircuitisfull,thepowersourcesetsupinthemostrecentstableweldingcongura-
tion.
○ Ifthecoolantcircuitisnotfull,allfunctionsareinhibitedandtherewillbenooutputpowerpresent.
UNIT ALARM!:Themessagewillappearondisplay D1
Press the (generic) button to repeat the checking procedure for an additional 15 seconds.
If the problem persists, rectify the cause of the alarm.
Power-up with operation of the cooler set to “OFF”
Operation of the cooler and the cooler alarm are disabled.
Weldingisperformedwithoutliquidcoolingofthetorch.
Torch change-over with operation of the cooler set to “ON”
Press and release the torch trigger.
Thisservestostartthecoolerfor15secondstollthetorchcoolingcircuit.
- STARTING CURRENT
○ Thevalueofthisparametercanbesetasapercentageoftheweldingcurrentorasanabsolute
valueexpressedinAmperes.
- FINAL CURRENT
○ Thevalueofthisparametercanbesetasapercentageoftheweldingcurrentorasanabsolute
valueexpressedinAmperes.
- HF CURRENT
○This parameter establishes the current value during HF discharge. The value of this parameter
can be set as an absolute value or in SYN.
○ WithSYNsettingtheHFcurrentvalueiscalculatedautomaticallyonthebasisofthepre-setweld-
ing current value.
Consequences of a higher value:
• Arcstrikingisfacilitated,evenonverydirtyworkpieces.
• Riskofpiercingexcessivelythingaugeworkpieces.
- HF TIME
○ Thisparameterdenesthemaximumhighfrequency(HF)arcstrikeduration.
- PULSED TYPE
○SLOW =Thissettingenablesslowpulsedmode.Thepeaktimeandbasetimeareset.
○FAST= This setting enables fast pulsed mode. The frequency and duty-cycle are set.
- PILOT ARC
○ Thefunctionenablestheoutputofalowcurrentbetweenthe1stand2ndtimesofthetorchtrig-
gertoshieldthemaskinadvanceandavoidtheriskofblindingashbackcausedbythewelding
current.
- ENABLE READ CURRENT
○ Thisfunctionallowsfortherealweldingcurrentdisplaytobeenabledordisabled.

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- TORCH TYPE
The parameter changes the torch trigger operating mode.
• oFF: indicates standard operation.
• 1:speciesthe4TB-levelmanagementvariant.Allowsthetransitiontothesecondarywelding
currentbypressingandholdingdowntheUPorDOWNbutton;whenthebuttonisreleased,
the primary current is restored. With variant oFF selected, the UP/DOWN buttons are disabled
for all procedures.
• 2:speciesthedownslopemanagementvariant.Byreleasingthetorchtriggerduringthethird
stroke(3S)thedownslopeisstoppedandthenalcurrentisimmediatelydeliveredwithout
havingtogothroughtheentireslopetime.TheHFrestartduringthedownslopeisdisabled.
- PEDAL TYPE
○The parameter selects the type of pedal used:
• RC02 standard pedal type
• RC09 special pedal type. This type of pedal recognises the pressure applied to the foot pedal
orthetorchbutton,switchingautomaticallyfrominternaladjustmenttoexternalcontrolusing
the pedal.
- MAX CURR. UP
WhentheparameterissettoON,themaximumvalueoftheweldingcurrentthatcanbesetwiththeUP
/DOWNtorchisthecurrentsetbytheencoderinthefrontpaneloftheweldingpowersource.Whenthe
parameterissettoOFF,themaximumvalueoftheweldingcurrentthatcanbesetwiththeUP/DOWN
torchisthemaximumcurrentthatcanbesuppliedbytheweldingpowersource.
- OPERATING HOUR COUNTER
○ Themenupageshowstheprocessinghourcounters.
• POWERON=Totalnumberofhourswhilethemachinehasbeenon(mainspowered).
• T.ARCON=Totalnumberofhourswithweldingarcon.
• P.ARCON=Partialnumberofhourswithweldingarcon.KeeptheS5buttonpressedfor3
seconds to reset the partial P.ARC ON.
SET UP
POWER ON 7.2 h The reading is carried out as follows: 7 hours and (0.2x60)
12 minutes
T. ARC. ON 5.3 h
P. ARC ON 0.7 h
- RESET
○The reset procedure involves complete restoration of the default values, parameters and memory
settings set in the factory.
○ Theresetprocedureisusefulinthefollowingcases:
• Toomanychangesmadetotheweldingparameterssouserndsitdifculttorestoredefaults.
• Unidentiedsoftwareproblemsthatpreventtheweldingpowersourcefromfunctioningcor-
rectly.
PARTIAL RESET
○ Theresetprocedureinvolvesrestorationoftheparametervaluesandsettings,exceptthefol-
lowingsettings:
• Settings of the SETUP menu.
• Saved JOBS

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TOTAL RESET
• The reset procedure involves complete restoration of the default values, parameters and me-
mory settings set in the factory.
• Allmemorylocationswillberesetandhenceallyourpersonalweldingsettingswillbelost!
-SERVICE
○his setting enables the machine validation (VAL.) and calibration (CAL) operations.
VALIDATION
○ Thevalidationprocedureallowstheweldingcurrentvalue(Ampere)andvoltagevalue(Volt)to
be correctly detected and displayed on the equipment display. The validation procedure requires
the equipment to be connected to a suitable static load.
CALIBRATION
○ hecalibrationprocedureallowsthemachinecurrenttobecalibrated.
The SERVICE procedure is not described in this manual as it can be carried out only by specialised,
suitably trained and equipped technical staff.
The testing methods and the equipment required are set out in the relevant technical standards.
.

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7 ALARM MANAGEMENT
S T OP
Thissymbolisshownifanincorrectoperatingconditionoccurs.
Analarmmessageappearsonthefollowingdisplay:D1.
Tab. 2 - Alarm messages
MESSAGE MEANING EVENT CHECKS
E33
TERMIC
ALARM
Overheating alarm
Indicates tripping of the welding
powersourcethermalprotection.
Leave the unit running so that the
overheated components cool as
rapidly as possible.
When the unit has cooled, the
welding power source will reset
automatically.
All functions disabled.
Exceptions:
• Cooling fan.
• Cooler(ifswitchedon).
• Make sure that the power re-
quiredbytheweldingprocessis
lower than the maximum rated
poweroutput.
• Check that the operating con-
ditions are in compliance with
theweldingpowersourcedata
platespecications.
• Check for the presence of ade-
quate air circulation around the
weldingpowersource.
Phase missing alarm
Indicates the absence of a phase
inthepowersupplyline.
The message appears at the
same time as the mains protection
activationLEDswitcheson.
All functions disabled.
Exceptions:
• Cooling fan.
• Check if the equipment power
supply line has all the phases.
If the problem persists:
• qualied technical personnel
are required for repair/mainte-
nance jobs.
E50
COOLING
ALARM
Cooler alarm
Indicates insufcient pressure in
the torch liquid cooling circuit.
All functions disabled.
Exceptions:
• Cooling fan.
The alarm message persists on
thedisplayuntiltherstoperation
is performed on the user interface.
Signalling of the alarm depends
onthefollowingsettings:
• Coo = on: the alarm is signalled
if the cooling unit is connected
tothepowersourceandifitis
running.
• Coo = oFF: the alarm is never
signalled, irrespective of the cir-
cumstances.
• Coo = Aut: the alarm is signalled
if the cooling unit is connected
tothepowersourceandifitis
running.
• Check that the connection to
the cooler is correct.
• Check that the "O/I" switch is
set to "I" and that it illuminates
whenthepumpisrunning.
• Check that the cooler is lled
withcoolant.
• Check that the cooling circuit
is liquid tight, notably the torch
hoses, the fuse and the internal
connections of the cooler.
E04
ALARM
VOUT
Alarm, no-load voltage failure
All functions disabled.
Exceptions:
• Cooling fan.
• Check to ensure the welding
torchisnotrestingonthework-
piece connected to ground.
• Check that when the power
source is switched on there
is no short circuit between the
sockets (voltage must be great-
er than/equivalent to Ur).
If the problem persists:
• Qualied technical personnel
are required for repair/mainte-
nance jobs.

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MESSAGE MEANING EVENT CHECKS
E05
TORCH
ALARM
Torch button alarm
Indicates that when the power
source was powered up a short
circuit was detected on the torch
trigger input.
When the unit has cooled, the
welding power source will reset
automatically.
All functions disabled.
Exceptions:
• Cooling fan.
• Make sure the torch trigger is
not pressed, jammed, or short
circuiting.
• Make sure the torch and torch
connector are intact.
E65
INDUCTAN-
CE ALARM
It indicated and excessive induc-
tanceintheweldingcircuit.
Toresettheweldingpressauser
interface key.
All functions are disabled.
Exceptions:
Cooling fan.
Coolingunit(ifswitchedon).
.
• Check that the welding cables
arenotexcessivelylongand/or
woundup.
• Make sure that the set AC fre-
quencyisnotexcessivelyhigh.
• If the workpiece to be welded
features inductive characteri-
stics(windings,etc.),movethe
earth clamp as to minimise as
much as possible the distance
betweentheclampandthewel-
ding arc..