EWM TIG 18 WD User manual

Operating instructions
EN
welding torch
TIG 18 WD
TIG 20 WD
TIG 260 WD
TIG 450 WD
099-011445-EW501
Observe additional system documents!
24.06.2021

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
safety 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 differ-
ing welding behaviour.
In the event of queries on installation, commissioning, operation or special conditions at the in-
stallation 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: [e-mail]
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.
Data security
The user is responsible for backing up data of all changes from the factory setting. The user is liable for
erased personal settings. The manufacturer does not assume any liability for this.

Contents
Notes on using these operating instructions
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1 Contents
1Contents .......................................................................................................................................... 3
2For your safety ............................................................................................................................... 5
2.1 Notes on using these operating instructions .......................................................................... 5
2.2 Explanation of icons ............................................................................................................... 6
2.3 Safety instructions .................................................................................................................. 7
2.4 Transport and installation .................................................................................................... 10
3Intended use ................................................................................................................................. 12
3.1 Applications .......................................................................................................................... 12
3.2 Documents which also apply ............................................................................................... 12
3.2.1 Warranty ............................................................................................................... 12
3.2.2 Declaration of Conformity ..................................................................................... 12
3.2.3 Service documents (spare parts) ......................................................................... 12
3.2.4 Part of the complete documentation ..................................................................... 13
4Machine description – quick overview ...................................................................................... 14
4.1 Machine variants .................................................................................................................. 14
4.2 Connection variants ............................................................................................................. 16
4.2.1 Decentral connection ............................................................................................ 16
4.2.2 Euro central connection ........................................................................................ 16
4.2.3 Euro central connection - KOMBI ......................................................................... 16
5Design and function ..................................................................................................................... 17
5.1 General ................................................................................................................................ 17
5.2 Scope of delivery ................................................................................................................. 17
5.3 Transport and installation .................................................................................................... 18
5.3.1 Ambient conditions ............................................................................................... 18
5.3.2 Welding torch cooling system ............................................................................... 18
5.3.2.1 Permitted torch coolant ......................................................................... 19
5.3.2.2 Maximal hose package length .............................................................. 19
5.4 Equipping the welding torch ................................................................................................. 20
5.4.1 TIG 18, 20 ............................................................................................................. 20
5.4.2 TIG 260, 450 ......................................................................................................... 21
5.5 General ................................................................................................................................ 22
5.6 Function specification .......................................................................................................... 22
5.6.1 Operating elements .............................................................................................. 22
5.6.1.1 Standard TIG torch (5-pole) .................................................................. 22
5.7 TIG Up/Down torch .............................................................................................................. 23
5.8 TIG Retox, Retox XQ welding torch ..................................................................................... 23
6Maintenance, care and disposal ................................................................................................. 25
6.1 General ................................................................................................................................ 25
6.2 Maintenance work, intervals ................................................................................................ 25
6.2.1 Daily maintenance tasks....................................................................................... 25
6.2.2 Monthly maintenance tasks .................................................................................. 26
6.2.3 Annual test (inspection and testing during operation) .......................................... 26
6.3 Disposing of equipment ....................................................................................................... 26
7Rectifying faults ........................................................................................................................... 27
7.1 Checklist for rectifying faults ................................................................................................ 27
8Technical data .............................................................................................................................. 28
8.1 TIG 18, -20, -260, 450 WD .................................................................................................. 28
8.2 TIG 18SC WD, -450SC WD ................................................................................................. 29
9Accessories .................................................................................................................................. 30
9.1 Welding torch cooling system .............................................................................................. 30
9.1.1 Coolant - type blueCool ........................................................................................ 30
9.1.2 Coolant - type KF .................................................................................................. 30
10 Replaceable parts ........................................................................................................................ 31
10.1 TIG 18 .................................................................................................................................. 31
10.2 TIG 18 SC ............................................................................................................................ 34
10.3 TIG 20 .................................................................................................................................. 37

Contents
Notes on using these operating instructions
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10.4 TIG 260 ................................................................................................................................ 40
10.5 TIG 450, -450 SC ................................................................................................................. 43
11 Service documents....................................................................................................................... 46
11.1 Circuit diagram ..................................................................................................................... 46
11.1.1 Standard up/down Retox welding torch ................................................................ 46
11.1.2 Retox XQ welding torch ........................................................................................ 47
12 Appendix ....................................................................................................................................... 48
12.1 Searching for a dealer .......................................................................................................... 48

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.

For your safety
Explanation of icons
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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
Output
Signal light lights up in red
Time representation (e.g.: wait 4 s / ac-
tuate)
Signal light flashes red
Interruption in the menu display (other
setting options possible)
Tool not required/do not use
Tool required/use

For your safety
Safety instructions
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2.3 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 volt-
ages 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 tech-
nical specialist may interconnect the sources as per standard IEC 60974-9:2010: Instal-
lation 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 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
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.
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!

For your safety
Safety instructions
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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!
According to IEC 60974-10, welding machines are divided into two classes of electro-
magnetic compatibility (the EMC class can be found in the Technical
data) > 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, includ-
ing 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 surround-
ing 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).

For your safety
Transport and installation
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CAUTION
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 in-
troduction 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.
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 net-
work. For some types of machines, connection restrictions or requirements relating to the maxi-
mum 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.
2.4 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.

For your safety
Transport and installation
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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 dur-
ing operation (water-cooled version). When opening the coolant circuit, escaping cool-
ant 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!
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
machine 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 stand-
ards applicable for use in industry and trade. It may only be used for the welding proce-
dures 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 ex-
pert personnel!
• Do not improperly modify or convert the equipment!
3.1 Applications
Welding torch for TIG welding with arc welding machines.
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.
The manufacturer recommends carrying out the safety inspection according to national and in-
ternational standards and guidelines every 12 months.
3.2.3 Service documents (spare parts)
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)!
Spare parts can be obtained from the relevant authorised dealer.

Intended use
Documents which also apply
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3.2.4 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 compo-
nents, especially the safety instructions!
The illustration shows a general example of a welding system.
Figure 3-1
Item
Documentation
A.1
Remote control
A.2
Control
A.3
Power source
A.4
Welding torch
A
Complete documentation

Machine description – quick overview
Machine variants
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4 Machine description – quick overview
4.1 Machine variants
Version
Functions
Torch type
SR
Silicone rubber
Standard torch for common welding tasks
TIG 18, TIG 20,
WD
Water-cooled
With decentralised connector
TIG 18, TIG 20,
TIG 260, TIG 450
GRIP
GRIP Grip
Ergonomic grip for secure handling
TIG 18, TIG 20,
TIG 260, TIG 450
KOMBI
Hose package
Euro torch connector with additional welding current lead for
polarity change.
TIG 18
SC
SuperCool
Higher load capacity due to improved design of the hose
package.
TIG 18, TIG 450
HFL
Highly flexible hose package
TIG 260, TIG 450
U/D
Up-/Down control
The welding power (welding current) can be continuously in-
creased or decreased during the welding process.
TIG 260, TIG 450
RETOX
Control RETOX
U/D functions with additional display of the set welding current
or the selected JOB number.
TIG 260, TIG 450
RETOX XQ
Control RETOX XQ
TIG function torch for the Tetrix XQ machine series
TIG 260
EZA
Euro torch connector
TIG 450

Machine description – quick overview
Machine variants
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The TIG torches are available in different model versions. The up/down and Retox versions add
extra operating elements to the torches.
TIG 18, TIG 20
TIG 260 U/D, TIG 450 U/D
TIG 260 Retox, -Retox XQ, TIG 450 Retox
Figure 4-1
Item
Symbol
Description 0
1
Gas nozzle
2
Torch body
3
Operating elements > see 5.6.1 chapter
4
Back cap
5
Display

Machine description – quick overview
Connection variants
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4.2 Connection variants
4.2.1 Decentral connection
Figure 4-2
4.2.2 Euro central connection
Figure 4-3
4.2.3 Euro central connection - KOMBI
Figure 4-4
Item
Symbol
Description 0
1
Quick connect coupling, NW 5
Coolant return (red)
2
Quick connect coupling, NW 5
Coolant feed (blue)
3
Control lead cable plug
4
Shielding gas hose
Crown nut G ¼“
5
Welding current connection
Decentral
6
Euro central connection
Welding current and shielding included.

Design and function
General
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5 Design and function
5.1 General
WARNING
Risk of injury from electrical voltage!
Contact with live parts, e.g. power connections, can be fatal!
• Observe the safety information on the first pages of the operating instructions!
• Commissioning must be carried out by persons who are specifically trained in handling
power sources!
• Connect connection or power cables while the machine is switched off!
CAUTION
Risk of burning due to incorrect welding current connection!
If the welding current plugs (machine connections) are not locked or if the workpiece
connection is contaminated (paint, corrosion), these connections and leads can heat up
and cause burns when touched!
• Check welding current connections on a daily basis and lock by turning to the right when
necessary.
• Clean workpiece connection thoroughly and secure properly. Do not use structural parts of
the workpiece as welding current return lead!
Risk from electrical current!
If welding is carried out alternately using different methods and if a welding torch and
an electrode holder remain connected to the machine, the open-circuit/welding voltage
is applied simultaneously on all cables.
• The torch and the electrode holder should therefore always be placed on an insulated sur-
face before starting work and during breaks.
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
machine 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!
Read and observe the documentation to all system and accessory components!
5.2 Scope of delivery
The delivery is checked and packaged carefully before dispatch, however it is not possible to exclude the
possibility of damage during transit.
Receiving inspection
• Check that the delivery is complete using the delivery note!
In the event of damage to the packaging
• Check the delivery for damage (visual inspection)!
In the event of complaints
If the delivery has been damaged during transport:
• Please contact the last haulier immediately!
• Keep the packaging (for possible checking by the haulier or for the return shipment).
Packaging for returns
If possible, please use the original packaging and the original packaging material. If you have any queries
on packaging and protection during transport, please contact your supplier.

Design and function
Transport and installation
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5.3 Transport and installation
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!
5.3.1 Ambient conditions
Equipment damage due to contamination!
Unusually high amounts of dust, acids, corrosive gases or substances can damage the machine
(observe maintenance intervals > see 6.2 chapter).
• Avoid large amounts of smoke, steam, oily fumes, grinding dust and corrosive ambient air!
In operation
Temperature range of the ambient air:
• -10 °C to +40 °C (-13 F to 104 F) [1]
Relative humidity:
• up to 50 % at 40 °C (104 F)
• up to 90 % at 20 °C (68 F)
Transport and storage
Storage in a closed area, temperature range of the ambient air:
• -25 °C to +55 °C (-13 F to 131 F) [1]
Relative humidity
• up to 90 % at 20 °C (68 F)
[1] Ambient temperature dependent on coolant! Observe the coolant temperature range of the torch cool-
ing
5.3.2 Welding torch cooling system
Insufficient frost protection in the welding torch coolant.
Depending on the ambient conditions, different liquids are used to cool the welding
torch > see 5.3.2.1 chapter. Coolant with frost protection (KF 37E or KF 23E) must be checked at
regular intervals for sufficient frost protection to prevent damage to the machine or the acces-
sory components.
• The coolant must be checked with the frost protection tester TYP 1 > see 9 chapter for suffi-
cient frost protection.
• Replace coolant with insufficient frost protection if necessary.
Material damage due to unsuitable coolants!
Unsuitable coolant, coolants mixed with other types / liquids or use in an unsuitable tempera-
ture range will result in material damage and loss of the manufacturer's warranty!
• Operation without coolant is not permitted! Dry running will destroy the cooling components
such as the coolant pump, welding torch and hose packages.
• Only use the coolants described in these instructions for the specified ambient conditions
(temperature range) > see 5.3.2.1 chapter.
• Do not mix coolants of different types (including those described in these instructions).
• When changing the coolant, all liquid must be replaced and the cooling system flushed.
Dispose of the coolant in accordance with local regulations and the material safety data sheets.

Design and function
Transport and installation
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5.3.2.1 Permitted torch coolant
Coolant
Temperature range
blueCool -10
-10 °C to +40 °C (14 °F to +104 °F)
KF 23E (Standard)
-10 °C to +40 °C (14 °F to +104 °F)
KF 37E
-20 °C to +30 °C (-4 °F to +86 °F)
blueCool -30
-30 °C to +40 °C (-22 °F to +104 °F)
5.3.2.2 Maximal hose package length
All information relates to the total hose package length of the complete welding system and presents ex-
emplary configurations (of components of the EWM product portfolio with standard lengths). A straight
kink-free installation is to be ensured, taking into account the max. delivery height.
Pump: Pmax = 3,5 bar (0.35 MPa)
--------------------------------------------------------------------------------------------------------------------- ►
Power source
Hose package
Wire feeder
miniDrive
Welding torch
Max.
Compact
(25 m / 82 ft.)
(5 m / 16 ft.)
30 m
98 ft.
(20 m / 65 ft.)
(5 m / 16 ft.)
Decompact
(25 m / 82 ft.)
(5 m / 16 ft.)
(15 m / 49 ft.)
(10 m / 32 ft.)
(5 m / 16 ft.)
Pump: Pmax = 4.5 bar (0.45 MPa)
--------------------------------------------------------------------------------------------------------------------- ►
Power source
Hose package
Wire feeder
miniDrive
Welding torch
Max.
Compact
(25 m / 82 ft.)
(5 m / 16 ft.)
30 m
98 ft.
(30 m / 98 ft.)
(5 m / 16 ft.)
40 m
131 ft.
Decompact
(40 m / 131 ft.)
(5 m / 16 ft.)
45 m
147 ft.
(40 m / 131 ft.)
(25 m / 82 ft.)
(5 m / 16 ft.)
70 m
229 ft.

Design and function
Equipping the welding torch
20
099-011445-EW501
24.06.2021
5.4 Equipping the welding torch
5.4.1 TIG 18, 20
Equipping the torch using the example of the TIG 18 torch. Procedure is similar for other models
as appropriate.
Figure 5-1
Item
Symbol
Description 0
1
Collet
2
Collet casing
3
Torch body
4
Gas nozzle
5
Electrode
6
Back cap
• Insert the collet from above into the collet body.
• Use the tool to screw the collet body with collet into the torch head from below.
• Screw in the gas nozzle by hand.
• Insert the electrode with the pointed side from above into the welding torch and position it.
• Tighten the back cap by hand.