EWM Picomig 305 puls TKM User manual

Operating instructions
EN
Welding machine
Picomig 305 puls TKM
099-005639-EW501
Observe additional system documents!
04.06.2020

General instructions
WARNING
Read the operating instructions!
The operating instructions provide an introduction to the safe use of the products.
• Read and observe the operating instructions for all system components, especially the sa-
fety instructions and warning notices!
• Observe the accident prevention regulations and any regional regulations!
• The operating instructions must be kept at the location where the machine is operated.
• Safety and warning labels on the machine indicate any possible risks.
Keep these labels clean and legible at all times.
• The machine has been constructed to state-of-the-art standards in line with any applicable
regulations and industrial standards. Only trained personnel may operate, service and re-
pair the machine.
• Technical changes due to further development in machine technology may lead to a dif-
fering welding behaviour.
In the event of queries on installation, commissioning, operation or special conditions at the
installation site, or on usage, please contact your sales partner or our customer service
department on [phone].
A list of authorised sales partners can be found at www.ewm-group.com/en/specialist-dealers.
Liability relating to the operation of this equipment is restricted solely to the function of the equipment. No
other form of liability, regardless of type, shall be accepted. This exclusion of liability shall be deemed ac-
cepted by the user on commissioning the equipment.
The manufacturer is unable to monitor whether or not these instructions or the conditions and methods
are observed during installation, operation, usage and maintenance of the equipment.
An incorrectly performed installation can result in material damage and injure persons as a result. For this
reason, we do not accept any responsibility or liability for losses, damages or costs arising from incorrect
installation, improper operation or incorrect usage and maintenance or any actions connected to this in
any way.
© EWM AG
Dr. Günter-Henle-Strasse 8
56271 Mündersbach Germany
Tel.: [phone], Fax: -244
Email: [email protected]
www.ewm-group.com
The copyright to this document remains the property of the manufacturer.
Copying, including extracts, only permitted with written approval.
The content of this document has been prepared and reviewed with all reasonable care. The information
provided is subject to change; errors excepted.

Contents
Notes on using these operating instructions
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1 Contents
1Contents .................................................................................................................................................. 3
2For your safety ....................................................................................................................................... 7
2.1 Notes on using these operating instructions .................................................................................. 7
2.2 Explanation of icons ....................................................................................................................... 7
2.3 Part of the complete documentation .............................................................................................. 8
2.4 Safety instructions .......................................................................................................................... 9
2.5 Transport and installation ............................................................................................................ 12
3Intended use ......................................................................................................................................... 14
3.1 Applications .................................................................................................................................. 14
3.2 Documents which also apply ....................................................................................................... 14
3.2.1 Warranty ....................................................................................................................... 14
3.2.2 Declaration of Conformity ............................................................................................. 14
3.2.3 Welding in environments with increased electrical hazards ......................................... 14
3.2.4 Service documents (spare parts and circuit diagrams) ................................................ 14
3.2.5 Calibration/Validation ................................................................................................... 14
4Machine description – quick overview .............................................................................................. 15
4.1 Front view / rear view ................................................................................................................... 15
4.2 Inside view ................................................................................................................................... 17
4.3 Machine control – Operating elements ........................................................................................ 18
4.3.1 Welding data display .................................................................................................... 20
4.3.2 Polarity setting .............................................................................................................. 20
5Design and function ............................................................................................................................. 21
5.1 Transport and installation ............................................................................................................ 21
5.1.1 Ambient conditions ....................................................................................................... 21
5.1.1.1 In operation ................................................................................................... 21
5.1.1.2 Transport and storage ................................................................................... 21
5.1.2 Machine cooling ............................................................................................................ 22
5.1.3 Workpiece lead, general ............................................................................................... 22
5.1.4 Welding torch cooling system ....................................................................................... 22
5.1.4.1 Cooling unit connection ................................................................................. 22
5.1.5 Notes on the installation of welding current leads ........................................................ 23
5.1.6 Stray welding currents .................................................................................................. 24
5.1.7 Mains connection .......................................................................................................... 24
5.1.7.1 Mains configuration ....................................................................................... 25
5.1.8 Welding torch holder .................................................................................................... 26
5.1.9 Shielding gas supply (shielding gas cylinder for welding machine) ............................. 26
5.1.9.1 Pressure regulator connection ...................................................................... 27
5.1.9.2 Shielding gas hose connection ..................................................................... 27
5.1.9.3 Shielding gas volume settings ...................................................................... 28
5.1.9.4 Gas test ......................................................................................................... 28
5.1.9.5 Purge hose package ..................................................................................... 28
5.2 MIG/MAG welding ........................................................................................................................ 29
5.2.1 Welding torch and workpiece line connection .............................................................. 29
5.2.1.1 MIG/MAG function torch ............................................................................... 30
5.2.1.2 MIG/MAG Push/Pull welding torch ................................................................ 30
5.2.2 Wire feed ...................................................................................................................... 30
5.2.2.1 Inserting the wire spool ................................................................................. 31
5.2.2.2 Changing the wire feed rollers ...................................................................... 32
5.2.2.3 Inching the wire electrode ............................................................................. 33
5.2.2.4 Spool brake setting ....................................................................................... 35
5.2.3 Definition of MIG/MAG welding tasks ........................................................................... 35
5.2.4 Welding task selection .................................................................................................. 36
5.2.5 Welding power (operating point) .................................................................................. 36
5.2.5.1 Selecting the welding parameter display mode ............................................ 36
5.2.5.2 Operating point setting using material thickness .......................................... 37
5.2.5.3 Arc length ...................................................................................................... 37
5.2.6 forceArc / forceArc puls ................................................................................................ 37
5.2.7 rootArc/rootArc puls ...................................................................................................... 38

Contents
Notes on using these operating instructions
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5.2.8 Operating modes (functional sequences) ..................................................................... 38
5.2.8.1 Explanation of signs and functions ................................................................ 38
5.2.8.2 Automatic cut-out .......................................................................................... 38
5.2.9 Conventional MIG/MAG Welding (GMAW non synergic) ............................................. 42
5.2.10 Expert menu (MIG/MAG) .............................................................................................. 43
5.3 MMA welding ................................................................................................................................ 43
5.3.1 Connecting the electrode holder and workpiece lead .................................................. 43
5.3.2 Welding task selection .................................................................................................. 44
5.3.3 Arcforce......................................................................................................................... 44
5.3.4 Hotstart ......................................................................................................................... 45
5.3.5 Antistick......................................................................................................................... 45
5.3.6 Expert menu (MMA) ...................................................................................................... 45
5.4 TIG welding .................................................................................................................................. 46
5.4.1 Preparing the TIG welding torch ................................................................................... 46
5.4.2 Welding torch and workpiece line connection .............................................................. 46
5.4.3 Welding task selection .................................................................................................. 47
5.4.4 Adjusting the gas post-flow time ................................................................................... 47
5.4.5 Expert menu (TIG) ........................................................................................................ 48
5.4.6 Arc ignition .................................................................................................................... 49
5.4.6.1 Liftarc ............................................................................................................. 49
5.4.7 Operating modes (functional sequences) ..................................................................... 49
5.4.7.1 Legend........................................................................................................... 49
5.4.7.2 Automatic cut-out .......................................................................................... 49
5.5 Remote control ............................................................................................................................. 51
5.6 Special parameters (advanced settings) ...................................................................................... 51
5.6.1 Selecting, changing and saving parameters................................................................. 52
5.6.2 Special parameters in detail ......................................................................................... 52
5.6.2.1 Ramp time for wire inching (P1) .................................................................... 52
5.6.2.2 Latched/special-latched tap start (P9) ........................................................... 52
5.6.3 Reset to factory settings ............................................................................................... 53
5.7 Machine configuration menu ........................................................................................................ 54
5.7.1 Selecting, changing and saving parameters................................................................. 54
5.7.2 Aligning the cable resistance ........................................................................................ 55
5.8 Power-saving mode (Standby) ..................................................................................................... 56
6Maintenance, care and disposal ......................................................................................................... 57
6.1 General......................................................................................................................................... 57
6.1.1 Cleaning ........................................................................................................................ 57
6.1.2 Dirt filter......................................................................................................................... 57
6.2 Maintenance work, intervals ........................................................................................................ 58
6.2.1 Daily maintenance tasks ............................................................................................... 58
6.2.2 Monthly maintenance tasks .......................................................................................... 58
6.2.3 Annual test (inspection and testing during operation) .................................................. 58
6.3 Disposing of equipment ................................................................................................................ 59
7Rectifying faults.................................................................................................................................... 60
7.1 Checklist for rectifying faults ........................................................................................................ 60
7.2 Error messages (power source) ................................................................................................... 61
7.3 Welding parameter calibration ..................................................................................................... 63
7.4 Resetting welding parameters to the factory settings .................................................................. 64
7.5 Resetting JOBs (welding tasks) to the factory settings ................................................................ 65
7.5.1 Resetting a single JOB ................................................................................................. 65
7.5.2 Resetting all JOBs ........................................................................................................ 65
8Technical data....................................................................................................................................... 66
8.1 Picomig 305 TKM ......................................................................................................................... 66
9Accessories .......................................................................................................................................... 68
9.1 Welding torch cooling system ...................................................................................................... 68
9.2 Transport systems ........................................................................................................................ 68
9.3 Remote control/connecting and extension cable ......................................................................... 68
9.3.1 19-pole connection ....................................................................................................... 68
9.4 Options ......................................................................................................................................... 68

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9.5 General accessories .................................................................................................................... 69
10 Replaceable parts ................................................................................................................................ 70
10.1 Wire feed rollers ........................................................................................................................... 70
10.1.1 Wire feed rollers for steel wire ...................................................................................... 70
10.1.2 Wire feed rollers for aluminium wire ............................................................................. 70
10.1.3 Wire feed rollers for cored wire .................................................................................... 71
10.1.4 Wire guide .................................................................................................................... 71
11 Appendix ............................................................................................................................................... 72
11.1 JOB-List ....................................................................................................................................... 72
11.2 Parameter overview – setting ranges .......................................................................................... 73
11.3 Searching for a dealer ................................................................................................................. 74

Contents
Notes on using these operating instructions
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For your safety
Notes on using these operating instructions
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2 For your safety
2.1 Notes on using these operating instructions
DANGER
Working or operating procedures which must be closely observed to prevent imminent
serious and even fatal injuries.
• Safety notes include the "DANGER" keyword in the heading with a general warning symbol.
• The hazard is also highlighted using a symbol on the edge of the page.
WARNING
Working or operating procedures which must be closely observed to prevent serious
and even fatal injuries.
• Safety notes include the "WARNING" keyword in the heading with a general warning sym-
bol.
• The hazard is also highlighted using a symbol in the page margin.
CAUTION
Working or operating procedures which must be closely observed to prevent possible
minor personal injury.
• The safety information includes the "CAUTION" keyword in its heading with a general warn-
ing symbol.
• The risk is explained using a symbol on the edge of the page.
Technical aspects which the user must observe to avoid material or equipment damage.
Instructions and lists detailing step-by-step actions for given situations can be recognised via bullet
points, e.g.:
• Insert the welding current lead socket into the relevant socket and lock.
2.2 Explanation of icons
Symbol
Description
Symbol
Description
Indicates technical aspects which the
user must observe.
Activate and release / Tap / Tip
Switch off machine
Release
Switch on machine
Press and hold
Switch
Incorrect / Invalid
Turn
Correct / Valid
Numerical value – adjustable
Input
Signal light lights up in green
Navigation
Signal light flashes green

For your safety
Part of the complete documentation
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Symbol
Description
Symbol
Description
Output
Signal light lights up in red
Time representation (e.g.: wait 4 s /
actuate)
Signal light flashes red
Interruption in the menu display (other
setting options possible)
Tool not required/do not use
Tool required/use
2.3 Part of the complete documentation
This document is part of the complete documentation and valid only in combination with all other
parts of these instructions! Read and observe the operating instructions for all system
components, especially the safety instructions!
The illustration shows a general example of a welding system.
Figure 2-1
Item
Documentation
A.1
Conversion instructions for optional equipment
A.2
Power source
A.3
Cooling unit, voltage converter, tool box etc.
A.4
Transport cart
A.5
Welding torch
A.6
Remote control
A.7
Control
A
Complete documentation

For your safety
Safety instructions
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2.4 Safety instructions
WARNING
Risk of accidents due to non-compliance with the safety instructions!
Non-compliance with the safety instructions can be fatal!
• Carefully read the safety instructions in this manual!
• Observe the accident prevention regulations and any regional regulations!
• Inform persons in the working area that they must comply with the regulations!
Risk of injury from electrical voltage!
Voltages can cause potentially fatal electric shocks and burns on contact. Even low vol-
tages can cause a shock and lead to accidents.
• Never touch live components such as welding current sockets or stick, tungsten or wire
electrodes!
• Always place torches and electrode holders on an insulated surface!
• Wear the full personal protective equipment (depending on the application)!
• The machine may only be opened by qualified personnel!
• The device must not be used to defrost pipes!
Hazard when interconnecting multiple power sources!
If a number of power sources are to be connected in parallel or in series, only a techni-
cal specialist may interconnect the sources as per standard IEC 60974-9:2010: Installa-
tion and use and German Accident Prevention Regulation BVG D1 (formerly VBG 15) or
country-specific regulations.
Before commencing arc welding, a test must verify that the equipment cannot exceed
the maximum permitted open circuit voltage.
• Only qualified personnel may connect the machine.
• When taking individual power sources out of operation, all mains and welding current leads
must be safely disconnected from the welding system as a whole. (Hazard due to reverse
polarity voltage!)
• Do not interconnect welding machines with pole reversing switch (PWS series) or machines
for AC welding since a minor error in operation can cause the welding voltages to be com-
bined, which is not permitted.
Risk of injury due to improper clothing!
During arc welding, radiation, heat and voltage are sources of risk that cannot be
avoided. The user has to be equipped with the complete personal protective equipment
at all times. The protective equipment has to include:
• Respiratory protection against hazardous substances and mixtures (fumes and vapours);
otherwise implement suitable measures such as extraction facilities.
• Welding helmet with proper protection against ionizing radiation (IR and UV radiation) and
heat.
• Dry welding clothing (shoes, gloves and body protection) to protect against warm environ-
ments with conditions comparable to ambient temperatures of 100 °C or higher and arcing
and work on live components.
• Hearing protection against harming noise.
WARNING
Risk of injury due to radiation or heat!
Arc radiation can lead to skin and eye injuries.
Contact with hot workpieces and sparks can lead to burns.
• Use hand shield or welding helmet with the appropriate safety level (depends on the appli-
cation).
• Wear dry protective clothing (e.g. hand shield, gloves, etc.) in accordance with
the applicable regulations of your country.
• Persons who are not directly involved should be protected with a welding curtain or suitable
safety screen against radiation and the risk of blinding!

For your safety
Safety instructions
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WARNING
Explosion risk!
Apparently harmless substances in closed containers may generate excessive pressure
when heated.
• Move containers with inflammable or explosive liquids away from the working area!
• Never heat explosive liquids, dusts or gases by welding or cutting!
Fire hazard!
Due to the high temperatures, sparks, glowing parts and hot slag that occur during
welding, there is a risk of flames.
• Be watchful of potential sources of fire in the working area!
• Do not carry any easily inflammable objects, e.g. matches or lighters.
• Ensure suitable fire extinguishers are available in the working area!
• Thoroughly remove any residue of flammable materials from the workpiece prior to starting
to weld.
• Only further process workpieces after they have cooled down. Do not allow them to contact
any flammable materials!
CAUTION
Smoke and gases!
Smoke and gases can lead to breathing difficulties and poisoning. In addition, solvent
vapour (chlorinated hydrocarbon) may be converted into poisonous phosgene due to
the ultraviolet radiation of the arc!
• Ensure that there is sufficient fresh air!
• Keep solvent vapour away from the arc beam field!
• Wear suitable breathing apparatus if appropriate!
Noise exposure!
Noise exceeding 70 dBA can cause permanent hearing damage!
• Wear suitable ear protection!
• Persons located within the working area must wear suitable ear protection!

For your safety
Safety instructions
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CAUTION
According to IEC 60974-10, welding machines are divided into two classes of
electromagnetic compatibility (the EMC class can be found in the Technical da-
ta) > see 8 chapter:
Class A machines are not intended for use in residential areas where the power supply comes
from the low-voltage public mains network. When ensuring the electromagnetic compatibility of
class A machines, difficulties can arise in these areas due to interference not only in the supply
lines but also in the form of radiated interference.
Class B machines fulfil the EMC requirements in industrial as well as residential areas, inclu-
ding residential areas connected to the low-voltage public mains network.
Setting up and operating
When operating arc welding systems, in some cases, electro-magnetic interference can occur
although all of the welding machines comply with the emission limits specified in the standard.
The user is responsible for any interference caused by welding.
In order to evaluate any possible problems with electromagnetic compatibility in the
surrounding area, the user must consider the following: (see also EN 60974-10 Appendix A)
• Mains, control, signal and telecommunication lines
• Radios and televisions
• Computers and other control systems
• Safety equipment
• The health of neighbouring persons, especially if they have a pacemaker or wear a hearing
aid
• Calibration and measuring equipment
• The immunity to interference of other equipment in the surrounding area
• The time of day at which the welding work must be carried out
Recommendations for reducing interference emission
• Mains connection, e.g. additional mains filter or shielding with a metal tube
• Maintenance of the arc welding system
• Welding leads should be as short as possible and run closely together along the ground
• Potential equalization
• Earthing of the workpiece. In cases where it is not possible to earth the workpiece directly,
it should be connected by means of suitable capacitors.
• Shielding from other equipment in the surrounding area or the entire welding system
Electromagnetic fields!
The power source may cause electrical or electromagnetic fields to be produced which
could affect the correct functioning of electronic equipment such as IT or CNC devices,
telecommunication lines, power cables, signal lines and pacemakers.
• Observe the maintenance instructions > see 6.2 chapter!
• Unwind welding leads completely!
• Shield devices or equipment sensitive to radiation accordingly!
• The correct functioning of pacemakers may be affected (obtain advice from a doctor if nec-
essary).
Obligations of the operator!
The respective national directives and laws must be complied with when operating the
machine!
• Implementation of national legislation relating to framework directive 89/391/EEC on the
introduction of measures to encourage improvements in the safety and health of workers at
work and associated individual guidelines.
• In particular, directive 89/655/EEC concerning the minimum safety and health requirements
for the use of work equipment by workers at work.
• The regulations applicable to occupational safety and accident prevention in the country
concerned.
• Setting up and operating the machine as per IEC 60974.-9.
• Brief the user on safety-conscious work practices on a regular basis.
• Regularly inspect the machine as per IEC 60974.-4.

For your safety
Transport and installation
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The manufacturer's warranty becomes void if non-genuine parts are used!
• Only use system components and options (power sources, welding torches, electrode hold-
ers, remote controls, spare parts and replacement parts, etc.) from our range of products!
• Only insert and lock accessory components into the relevant connection socket when the ma-
chine is switched off.
Requirements for connection to the public mains network
High-performance machines can influence the mains quality by taking current from the mains
network. For some types of machines, connection restrictions or requirements relating to the
maximum possible line impedance or the necessary minimum supply capacity at the interface
with the public network (Point of Common Coupling, PCC) can therefore apply. In this respect,
attention is also drawn to the machines' technical data. In this case, it is the responsibility of the
operator, where necessary in consultation with the mains network operator, to ensure that the
machine can be connected.
2.5 Transport and installation
WARNING
Risk of injury due to improper handling of shielding gas cylinders!
Improper handling and insufficient securing of shielding gas cylinders can cause seri-
ous injuries!
• Observe the instructions from the gas manufacturer and any relevant regulations concern-
ing the use of compressed air!
• Do not attach any element to the shielding gas cylinder valve!
• Prevent the shielding gas cylinder from heating up.
CAUTION
Risk of accidents due to supply lines!
During transport, attached supply lines (mains leads, control cables, etc.) can cause
risks, e.g. by causing connected machines to tip over and injure persons!
• Disconnect all supply lines before transport!
Risk of tipping!
There is a risk of the machine tipping over and injuring persons or being damaged itself
during movement and set up. Tilt resistance is guaranteed up to an angle of 10° (ac-
cording to IEC 60974-1).
• Set up and transport the machine on level, solid ground.
• Secure add-on parts using suitable equipment.
Risk of accidents due to incorrectly installed leads!
Incorrectly installed leads (mains, control and welding leads or intermediate hose pack-
ages ) can present a tripping hazard.
• Lay the supply lines flat on the floor (avoid loops).
• Avoid laying the leads on passage ways.
Risk of injury from heated coolant and its connections!
The coolant used and its connection or connection points can heat up significantly
during operation (water-cooled version). When opening the coolant circuit, escaping
coolant may cause scalding.
• Open the coolant circuit only when the power source or cooling unit is switched off!
• Wear proper protective equipment (protective gloves)!
• Seal open connections of the hose leads with suitable plugs.
The units are designed for operation in an upright position!
Operation in non-permissible positions can cause equipment damage.
• Only transport and operate in an upright position!

For your safety
Transport and installation
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Accessory components and the power source itself can be damaged by incorrect connection!
• Only insert and lock accessory components into the relevant connection socket when the ma-
chine is switched off.
• Comprehensive descriptions can be found in the operating instructions for the relevant ac-
cessory components.
• Accessory components are detected automatically after the power source is switched on.
Protective dust caps protect the connection sockets and therefore the machine against dirt and
damage.
• The protective dust cap must be fitted if there is no accessory component being operated on
that connection.
• The cap must be replaced if faulty or if lost!

Intended use
Applications
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3 Intended use
WARNING
Hazards due to improper usage!
The machine has been constructed to the state of the art and any regulations and
standards applicable for use in industry and trade. It may only be used for the welding
procedures indicated at the rating plate. Hazards may arise for persons, animals and
material objects if the equipment is not used correctly. No liability is accepted for any
damages arising from improper usage!
• The equipment must only be used in line with its designated purpose and by trained or
expert personnel!
• Do not improperly modify or convert the equipment!
3.1 Applications
Arc welding machine for standard and pulsed gas-shielded metal-arc welding with TIG welding and lift arc
(touch starting) or MMA welding as secondary process. It may be possible to expand the functionality by
using accessories (see the documentation in the relevant chapter).
3.2 Documents which also apply
3.2.1 Warranty
For more information refer to the "Warranty registration" brochure supplied and our information regarding
warranty, maintenance and testing at www.ewm-group.com!
3.2.2 Declaration of Conformity
This product corresponds in its design and construction to the EU directives listed in the decla-
ration. The product comes with a relevant declaration of conformity in the original.
3.2.3 Welding in environments with increased electrical hazards
In compliance with IEC / DIN EN 60974, VDE 0544 the machines can be used in environ-
ments with an increased electrical hazard.
3.2.4 Service documents (spare parts and circuit diagrams)
WARNING
Do not carry out any unauthorised repairs or modifications!
To avoid injury and equipment damage, the unit must only be repaired or modified by
specialist, skilled persons!
The warranty becomes null and void in the event of unauthorised interference.
• Appoint only skilled persons for repair work (trained service personnel)!
Original copies of the circuit diagrams are enclosed with the unit.
Spare parts can be obtained from the relevant authorised dealer.
3.2.5 Calibration/Validation
We hereby confirm that this product was tested with calibrated measuring equipment according to the ap-
plicable standards IEC/EN 60974, ISO/EN 17662 and complies with the permissible tolerances. Recom-
mended calibration interval: 12 months.

Machine description – quick overview
Front view / rear view
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4 Machine description – quick overview
4.1 Front view / rear view
Figure 4-1

Machine description – quick overview
Front view / rear view
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Item
Symbol
Description 0
1
Carrying handle
2
Machine control > see 4.3 chapter
3
19-pole connection socket (analogue)
For connecting analogue accessory components (remote control, welding torch control
lead, etc.)
4
Welding torch connection (Euro or Dinse torch connector)
Welding current, shielding gas and torch trigger integrated
5
Park socket, polarity selection plug
Retainer for the polarity selection plug in MMA mode or for transport.
6
Main Switch
Switching the machine on or off.
7
Connection socket, 7-pole (digital)
To connect digital accessories
Retrofitting option > see 9.4 chapter
8
Mains connection cable > see 5.1.7 chapter
9
Cooling air outlet
10
Machine feet
11
External wire feed inlet
Pre-cut casing inlet for external wire feed.
12
8-pole connection socket
Cooling unit control lead
13
Connection thread - G¼"
Shielding gas connection (inlet)
14
4-pole connection socket
Cooling unit voltage supply
15
Welding current cable, polarity selection
Welding current to Euro torch connector/torch, for polarity selection
• ---------- MIG/MAG: Connection socket for “+” welding current
• ---------- Self-shielding flux cored wire/TIG: Connection socket, “-” welding current
• ---------- MMA: Park socket
16
Connection socket, “-” welding current
How to connect the accessories depends on the welding procedure. Please observe
the connection description for the corresponding welding procedure > see 5 chapter.
17
Connection socket, “+” welding current
How to connect the accessories depends on the welding procedure. Please observe
the connection description for the corresponding welding procedure > see 5 chapter.
18
Cooling air inlet

Machine description – quick overview
Inside view
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4.2 Inside view
Figure 4-2

Machine description – quick overview
Machine control – Operating elements
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Item
Symbol
Description 0
1
Slide latch, lock for the protective cap
2
Wire spool inspection window
Check wire supply
3
Protective cap
Cover for the wire feed mechanism and other operating elements.
Depending on the machine series, additional stickers with information on the replace-
ment parts and JOB lists will be located on the inside.
4
Key button, Automatic cutout
Wire feed motor supply voltage fuse
(press to reset a triggered fuse)
5
Push-button, wire inching
Potential- and gas-free inching of the wire electrode through the hose package to the
welding torch > see 5.2.2.3 chapter.
6
Wire spool holder
7
Wire feed unit
4.3 Machine control – Operating elements
Figure 4-3
Item
Symbol
Description 0
1
“Collective interference” signal light
2
“Excess temperature” signal light

Machine description – quick overview
Machine control – Operating elements
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Item
Symbol
Description 0
3
Welding data display (3-digit)
Displays the welding parameters and the corresponding values > see 4.3.1 chapter
4
Welding parameter display mode/power-saving mode push-button
---------- Welding current
---------- Material thickness
--------- Wire feed speed
Press for 2 s to put the machine into power-saving mode.
Activate one of the operating elements to reactivate > see 5.8 chapter.
5
Display, JOB
Shows the currently selected welding task (JOB number).
6
JOB-
LIST
Welding task push-button (JOB)
Select the welding task from the welding task list (JOB-LIST). The list can be found
inside the protective cap on the wire feeder and in the appendix to these operating
instructions.
7
Welding parameter setting dial
For setting the welding performance, for selecting the JOB (welding task) and for set-
ting other welding parameters.
8
Operating mode button
--------- Non-latched
------- Latched
----- Spots
----- Interval
9
Runtime parameters button
For selecting the parameters to be set. Also for entering and exiting the menus for ad-
vanced settings.
--- Choke effect/dynamics
--- Gas post-flow time
--- Spot time
--- Pause time
10
Arc length correction rotary dial
11
Welding type push-button
---------- Standard arc welding
------- Pulsed arc welding
12
Push-button gas test / rinse hose package > see 5.1.9 chapter
13
Signal light polarity setting
14
Signal light polarity setting

Machine description – quick overview
Machine control – Operating elements
20
099-005639-EW501
04.06.2020
4.3.1 Welding data display
Figure 4-4
The push-button for the welding parameter display mode is next to the display.
Each time the push-button is pressed the display changes to the next parameter. After the last parameter
is reached the display continues with the first parameter.
The display shows:
• Nominal values (before welding)
• Actual values (during welding)
• Hold values (after welding)
MIG/MAG
Parameter
Nominal values
Actual values
Hold values
Welding current
/ [1]


Material thickness



Wire feed speed



Welding voltage



[1] traditional MIG/MAG
TIG/MMA
Parameter
Nominal values
Actual values
Hold values
Welding current



Welding voltage



After the welding, the display switches form hold values to nominal values by
• pressing the push-buttons or turning the rotary knobs of the control
• waiting for about 5 seconds
4.3.2 Polarity setting
The polarity setting displays the polarity required for the selected JOB on the machine con-
trol > see 4.3 chapter. The required polarity can then be set with the polarity selection plug.