• injury or death to the operator or a third party,
• damage to the device and other material assets belonging to the operating company,
• inefficient operation of the device.

• be suitably qualified,
• have sufficient knowledge of welding and
• read and follow these operating instructions carefully.

The operating instructions must always be at hand wherever the device is being used. In addition to the operating instructions, attention must also be paid to any generally applicable and local regulations regarding accident prevention and environmental protection.

• must be in a legible state,
• must not be damaged,
• must not be removed,
• must not be covered, pasted or painted over.

For the location of the safety and danger notices on the device, refer to the section headed "General" in the operating instructions for the device.
Before switching on the device, rectify any faults that could compromise safety.
This is for your personal safety!

The device is to be used exclusively for its intended purpose.

The device is intended solely for the welding processes specified on the rating plate.
Any use above and beyond this purpose is deemed improper. The manufacturer shall not be held liable for any damage arising from such usage.

• carefully reading and following all the instructions given in the operating instructions
• studying and obeying all safety and danger notices carefully
• performing all stipulated inspection and maintenance work.

• Thawing out pipes
• Charging batteries
• Starting engines

The device is designed for use in industry and the workshop. The manufacturer accepts no responsibility for any damage caused through use in a domestic setting.

The manufacturer likewise accepts no liability for inadequate or incorrect results.

Operation or storage of the device outside the stipulated area will be deemed as not in accordance with the intended purpose. The manufacturer shall not be held liable for any damage arising from such usage.

• during operation: -10 °C to + 40 °C (14 °F to 104 °F)
• during transport and storage: -20 °C to +55 °C (-4 °F to 131 °F)

• up to 50% at 40 °C (104 °F)
• up to 90% at 20 °C (68 °F)

The surrounding air must be free from dust, acids, corrosive gases or substances, etc.
Can be used at altitudes of up to 2000 m (6561 ft. 8.16 in.)

• are familiar with the fundamental instructions regarding safety at work and accident prevention and have been instructed in how to use the device
• have read and understood these operating instructions, especially the section "safety rules", and have confirmed as much with their signatures
• are trained to produce the required results.

Checks must be carried out at regular intervals to ensure that operators are working in a safety-conscious manner.

• to observe the basic instructions regarding safety at work and accident prevention
• to read these operating instructions, especially the "Safety rules" section and sign to confirm that they have understood them and will follow them.

Before leaving the workplace, ensure that people or property cannot come to any harm in your absence.

Devices with a higher rating may affect the energy quality of the mains due to their current consumption.

• Connection restrictions
• Criteria with regard to the maximum permissible mains impedance ^*)
• Criteria with regard to the minimum short-circuit power requirement ^*)

^*) at the interface with the public grid
see "Technical data"

In this case, the plant operator or the person using the device should check whether the device may be connected, where appropriate by discussing the matter with the power supply company.

IMPORTANT! Ensure that the mains connection is earthed properly

Local regulations and national guidelines may require a residual current protective device when connecting equipment to the public grid.
The type of residual current protective device recommended by the manufacturer for the equipment is indicated in the technical data.

• flying sparks and hot pieces of metal
• Arc radiation, which can damage eyes and skin

• Hazardous electromagnetic fields, which can endanger the lives of those using cardiac pacemakers

• Risk of electrocution from mains current and welding current

• Greater noise pollution

• Harmful welding fumes and gases

• Flame-resistant
• Insulating and dry
• Covers the whole body, is undamaged and in good condition
• Safety helmet
• Trousers with no turn-ups

• Protect eyes and face from UV rays, heat and sparks using a protective visor and regulation filter
• Wear regulation protective goggles with side protection behind the protective visor
• Wear stout footwear that provides insulation even in wet conditions
• Protect the hands with suitable gloves (electrically insulated and providing protection against heat)
• Wear ear protection to reduce the harmful effects of noise and to prevent injury

• Make them aware of all the dangers (risk of dazzling by the arc, injury from flying sparks, harmful welding fumes, noise, possible risks from mains current and welding current, etc.)
• Provide suitable protective equipment
• Alternatively, erect suitable safety screens/curtains.

The device generates a maximum sound power level of <80 dB(A) (ref. 1pW) when idling and in the cooling phase following operation at the maximum permissible operating point under maximum rated load conditions according to EN 60974-1.

It is not possible to provide a workplace-related emission value during welding (or cutting) as this is influenced by both the process and the environment. All manner of different welding parameters come into play, including the welding process (MIG/MAG, TIG welding), the type of power selected (DC or AC), the power range, the type of weld metal, the resonance characteristics of the workpiece, the workplace environment, etc.

The fumes produced during welding contain harmful gases and vapours.

Welding fumes contain substances that cause cancer, as stated in Monograph 118 of the International Agency for Research on Cancer.

Use at-source extraction and a room extraction system.
If necessary, use a welding torch with an integrated extraction device.

Keep your face away from welding fumes and gases.

• must not be breathed in
• must be extracted from the working area using appropriate methods.

Ensure an adequate supply of fresh air. Ensure that there is a ventilation rate of at least 20 m³ per hour at all times.

Otherwise, a welding helmet with an air supply must be worn.

If there is any doubt about whether the extraction capacity is sufficient, the measured toxic emission values should be compared with the permissible limit values.

• Metals used for the workpiece
• Electrodes
• Coatings
• Cleaners, degreasers, etc.
• Welding process used

The relevant material safety data sheets and manufacturer's specifications for the listed components should therefore be studied carefully.

Recommendations for trade fair scenarios, risk management measures and for identifying working conditions can be found on the European Welding Association website under Health & Safety (https://european-welding.org).

Flammable vapours (e.g. solvent fumes) should be kept away from the arc's radiation area.

Close the shielding gas cylinder valve or main gas supply if no welding is taking place.

Flying sparks may cause fires or explosions.

Never weld close to flammable materials.

Flammable materials must be at least 11 metres (36 ft. 1.07 in.) away from the arc, or alternatively covered with an approved cover.

A suitable, tested fire extinguisher must be available and ready for use.

Sparks and pieces of hot metal may also get into adjacent areas through small gaps or openings. Take appropriate precautions to prevent any danger of injury or fire.

Welding must not be performed in areas that are subject to fire or explosion or near sealed tanks, vessels or pipes unless these have been prepared in accordance with the relevant national and international standards.

Do not carry out welding on containers that are being or have been used to store gases, propellants, mineral oils or similar products. Residues pose an explosive hazard.

An electric shock is potentially life threatening and can be fatal.

Do not touch live parts either inside or outside the device.

During MIG/MAG welding and TIG welding, the welding wire, the wirespool, the feed rollers and all pieces of metal that are in contact with the welding wire are live.

Always set the wirefeeder up on a sufficiently insulated surface or use a suitable, insulated wirefeeder holder.

Make sure that you and others are protected with an adequately insulated, dry base or cover for the earth or ground potential. This base or cover must extend over the entire area between the body and the earth or ground potential.

All cables and leads must be secured, undamaged, insulated and adequately dimensioned. Replace loose connections and scorched, damaged, or inadequately dimensioned cables and leads immediately.
Use the handle to ensure the power connections are tight before every use.
In the case of power cables with a bayonet connector, rotate the power cable around the longitudinal axis by at least 180° and pretension.

Do not wrap cables or leads around the body or parts of the body.

• never be immersed in liquid for cooling
• Never touch the electrode when the power source is switched on.

Double the open circuit voltage of a power source can occur between the welding electrodes of two power sources. Touching the potentials of both electrodes at the same time may be fatal under certain circumstances.

Arrange for the mains cable to be checked regularly by a qualified electrician to ensure the ground conductor is functioning properly.

Protection class I devices require a mains supply with ground conductor and a connector system with ground conductor contact for proper operation.

Operation of the device on a mains supply without ground conductor and on a socket without ground conductor contact is only permitted if all national regulations for protective separation are observed.
Otherwise, this is considered gross negligence. The manufacturer shall not be held liable for any damage arising from such usage.

If necessary, provide adequate earthing for the workpiece.

Switch off unused devices.

Wear a safety harness if working at height.

Before working on the device, switch it off and pull out the mains plug.

Attach a clearly legible and easy-to-understand warning sign to the device to prevent anyone from plugging the mains plug back in and switching it on again.

• Discharge all live components
• Ensure that all components in the device are de-energised.

If work on live parts is required, appoint a second person to switch off the main switch at the right moment.

• Fire hazard
• Overheating of parts connected to the workpiece
• Damage to ground conductors
• Damage to device and other electrical equipment

Ensure that the workpiece is held securely by the workpiece clamp.

Attach the workpiece clamp as close as possible to the area that is to be welded.

Position the device with sufficient insulation against electrically conductive environments, such as insulation against conductive floor or insulation to conductive racks.

If power distribution boards, twin-head mounts, etc., are being used, note the following: The electrode of the welding torch / electrode holder that is not used is also live. Make sure that the welding torch / electrode holder that is not used is kept sufficiently insulated.

In the case of automated MIG/MAG applications, ensure that only an insulated wire electrode is routed from the welding wire drum, large wirefeeder spool or wirespool to the wirefeeder.

• Are only designed for use in industrial settings
• Can cause line-bound and radiated interference in other areas

• Satisfy the emissions criteria for residential and industrial areas. This is also true for residential areas in which the energy is supplied from the public low-voltage mains.

EMC device classification as per the rating plate or technical data.

In certain cases, even though a device complies with the standard limit values for emissions, it may affect the application area for which it was designed (e.g. when there is sensitive equipment at the same location, or if the site where the device is installed is close to either radio or television receivers).
If this is the case, then the operator is obliged to take appropriate action to rectify the situation.

• Safety devices
• Network, signal and data transfer lines
• IT and telecommunications devices
• Measuring and calibrating devices

1. Mains supply
   • If electromagnetic interference arises despite the correct mains connection, additional measures are necessary (e.g. use of a suitable line filter)
2. Welding power-leads
   • must be kept as short as possible
   • must be laid close together (to avoid EMF problems)
   • must be kept well apart from other leads
3. Equipotential bonding
4. Earthing of the workpiece
   • If necessary, establish an earth connection using suitable capacitors.
5. Shield, if necessary
   • Shield other devices nearby
   • Shield the entire welding installation

• Effects on the health of persons in the vicinity, e.g. those with pacemakers and hearing aids
• Individuals with pacemakers must seek advice from their doctor before approaching the device or any welding that is in progress
• For safety reasons, maintain as large a distance as possible between the welding power-leads and the head/torso of the welder
• Do not carry welding power-leads and hosepacks over the shoulders or wind them around any part of the body

• Fans
• Cogs
• Rollers
• Shafts
• Wirespools and welding wires

Do not reach into the rotating cogs of the wire drive or into rotating drive components.

Covers and side panels may only be opened/removed while maintenance or repair work is being carried out.

• Ensure that all covers are closed and all side panels are fitted properly.
• Keep all covers and side panels closed.

The welding wire emerging from the welding torch poses a high risk of injury (piercing of the hand, injuries to the face and eyes, etc.).

Therefore, always keep the welding torch away from the body (devices with wirefeeder) and wear suitable protective goggles.

Never touch the workpiece during or after welding - risk of burns.

Slag can jump off cooling workpieces. The specified protective equipment must therefore also be worn when reworking workpieces, and steps must be taken to ensure that other people are also adequately protected.

Welding torches and other parts with a high operating temperature must be allowed to cool down before handling.

Special provisions apply in areas at risk of fire or explosion
- observe relevant national and international regulations.

Power sources for work in areas with increased electric risk (e.g. near boilers) must carry the "Safety" sign. However, the power source must not be located in such areas.

Risk of scalding from escaping coolant. Switch off cooling unit before disconnecting coolant flow or return lines.

Observe the information on the coolant safety data sheet when handling coolant. The coolant safety data sheet may be obtained from your service centre or downloaded from the manufacturer's website.

Use only suitable load-carrying equipment supplied by the manufacturer when transporting devices by crane.

• Hook chains or ropes onto all suspension points provided on the load-carrying equipment.
• Chains and ropes must be at the smallest angle possible to the vertical.
• Remove gas cylinder and wirefeeder (MIG/MAG and TIG devices).

If the wirefeeder is attached to a crane holder during welding, always use a suitable, insulated wirefeeder hoisting attachment (MIG/MAG and TIG devices).

If the device has a carrying strap or handle, this is intended solely for carrying by hand. The carrying strap is not to be used if transporting with a crane, counterbalanced lift truck or other mechanical hoist.

All lifting tackle (straps, handles, chains, etc.) used in connection with the device or its components must be tested regularly (e.g. for mechanical damage, corrosion or changes caused by other environmental factors).
The testing interval and scope of testing must comply with applicable national standards and directives as a minimum.

Odourless and colourless shielding gas may escape unnoticed if an adapter is used for the shielding gas connection. Prior to assembly, seal the device-side thread of the adapter for the shielding gas connection using suitable Teflon tape.

• Solid particle size < 40 µm
• Pressure condensation point < -20 °C
• Max. oil content < 25 mg/m³

Use filters if necessary.

Shielding gas cylinders contain gas under pressure and can explode if damaged. As the shielding gas cylinders are part of the welding equipment, they must be handled with the greatest of care.

Protect shielding gas cylinders containing compressed gas from excessive heat, mechanical impact, slag, naked flames, sparks and arcs.

Mount the shielding gas cylinders vertically and secure according to instructions to prevent them falling over.

Keep the shielding gas cylinders well away from any welding or other electrical circuits.

Never hang a welding torch on a shielding gas cylinder.

Never touch a shielding gas cylinder with an electrode.

Risk of explosion - never attempt to weld a pressurised shielding gas cylinder.

Only use shielding gas cylinders suitable for the application in hand, along with the correct and appropriate accessories (regulator, hoses and fittings). Only use shielding gas cylinders and accessories that are in good condition.

Turn your face to one side when opening the valve of a shielding gas cylinder.

Close the shielding gas cylinder valve if no welding is taking place.

If the shielding gas cylinder is not connected, leave the valve cap in place on the cylinder.

The manufacturer's instructions must be observed as well as applicable national and international regulations for shielding gas cylinders and accessories.

• The maximum permissible tilt angle is 10°.

• Observe relevant national and international regulations.

Use internal directives and checks to ensure that the workplace environment is always clean and clearly laid out.

Only set up and operate the device in accordance with the degree of protection shown on the rating plate.

When setting up the device, ensure there is an all-round clearance of 0.5 m (1 ft. 7.69 in.) to ensure that cooling air can flow in and out freely.

When transporting the device, observe the relevant national and local guidelines and accident prevention regulations. This applies especially to guidelines regarding the risks arising during transport.

Do not lift or transport operational devices. Switch off devices before transport or lifting.

• Wirefeeder
• Wirespool
• Shielding gas cylinder

After transporting the device, the device must be visually inspected for damage before commissioning. Any damage must be repaired by trained service technicians before commissioning the device.

• injury or death to the operator or a third party
• damage to the device and other material assets belonging to the operator
• inefficient operation of the device

Any safety devices that are not functioning properly must be repaired before switching on the device.

Never bypass or disable safety devices.

Before switching on the device, ensure that no one is likely to be endangered.

Check the device at least once a week for obvious damage and proper functioning of safety devices.

Always fasten the shielding gas cylinder securely and remove it beforehand if the device is to be transported by crane.

Only the manufacturer's original coolant is suitable for use with our devices due to its properties (electrical conductibility, anti-freeze agent, material compatibility, flammability, etc.).

Only use suitable original coolant from the manufacturer.

Do not mix the manufacturer's original coolant with other coolants.

Only connect the manufacturer's system components to the cooling circuit.

The manufacturer accepts no liability for damage resulting from use of other system components or a different coolant. In addition, all warranty claims will be forfeited.

Cooling Liquid FCL 10/20 does not ignite. The ethanol-based coolant can ignite under certain conditions. Transport the coolant only in its original, sealed containers and keep well away from any sources of ignition.

Used coolant must be disposed of properly in accordance with the relevant national and international regulations. The coolant safety data sheet may be obtained from your service centre or downloaded from the manufacturer's website.

Check the coolant level before starting to weld, while the system is still cool.

It is impossible to guarantee that bought-in parts are designed and manufactured to meet the demands made of them, or that they satisfy safety requirements.

• Use only original spare and wearing parts (also applies to standard parts).
• Do not carry out any modifications, alterations, etc. to the device without the manufacturer's consent.
• Components that are not in perfect condition must be replaced immediately.
• When ordering, please give the exact designation and part number as shown in the spare parts list, as well as the serial number of your device.

The housing screws provide the ground conductor connection for earthing the housing parts.
Only use original housing screws in the correct number and tightened to the specified torque.

The manufacturer recommends that a safety inspection of the device is performed at least once every 12 months.

The manufacturer recommends that the power source be calibrated during the same 12-month period.

• after any changes are made
• after any additional parts are installed, or after any conversions
• after repair, care and maintenance has been carried out
• at least every twelve months.

For safety inspections, follow the appropriate national and international standards and directives.

Further details on safety inspection and calibration can be obtained from your service centre. They will provide you on request with any documents you may require.

Do not dispose of this device with normal domestic waste! To comply with the European Directive on Waste Electrical and Electronic Equipment and its implementation as national law, electrical equipment that has reached the end of its life must be collected separately and returned to an approved recycling facility. Any device that you no longer require must either be returned to your dealer or given to one of the approved collection and recycling facilities in your area. Ignoring this European Directive may have potentially adverse affects on the environment and your health!

Devices with the CE mark satisfy the essential requirements of the low-voltage and electromagnetic compatibility directives (e.g. relevant product standards of the EN 60 974 series).

Fronius International GmbH hereby declares that the device is compliant with Directive 2014/53/EU. The full text on the EU Declaration of Conformity can be found at the following address: http://www.fronius.com

Devices marked with the CSA test mark satisfy the requirements of the relevant standards for Canada and the USA.

The user is responsible for the safekeeping of any changes made to the factory settings. The manufacturer accepts no liability for any deleted personal settings.

Copyright of these operating instructions remains with the manufacturer.

The text and illustrations are all technically correct at the time of printing. We reserve the right to make changes. The contents of the operating instructions shall not provide the basis for any claims whatsoever on the part of the purchaser. If you have any suggestions for improvement, or can point out any mistakes that you have found in the instructions, we will be most grateful for your comments.

The power source has the following properties:

• Compact dimensions
• Robust plastic housing
• Extremely reliable even under harsh operating conditions
• Carrying strap for easy transport on construction sites, etc.
• Protected controls
• Current sockets with bayonet latch

In conjunction with the digital resonance inverter, an electronic regulator adapts the power source characteristic to suit the welding electrode during welding. The result is a lightweight and compact device with excellent ignition and weld properties.

• Low primary current
• Low conduction losses
• Late tripping of the circuit breaker
• Improved stability in the event of voltage fluctuations
• Long mains leads can be used
• In the case of multivoltage devices, a continuous input voltage range

When using cellulose electrodes (CEL), a dedicated operating mode can be chosen for perfect welding results.

The power source has the following properties:

• Compact dimensions
• Robust plastic housing
• Extremely reliable even under harsh operating conditions
• Carrying strap for easy transport on construction sites, etc.
• Protected controls
• Current sockets with bayonet latch

In conjunction with the digital resonance inverter, an electronic regulator adapts the power source characteristic to suit the welding electrode during welding. The result is a lightweight and compact device with excellent ignition and weld properties.

• Low primary current
• Low conduction losses
• Late tripping of the circuit breaker
• Improved stability in the event of voltage fluctuations
• Long mains leads can be used
• In the case of multivoltage devices, a continuous input voltage range

When using cellulose electrodes (CEL), a dedicated operating mode can be chosen for perfect welding results.

The warning notices and safety symbols on the power source must not be removed or painted over. They warn against incorrect operation which can lead to serious injury and damage.

Meaning of safety symbols on the device:

	Welding is dangerous. The following basic requirements must be met to ensure the equipment is used properly: Welders must be sufficiently qualified Suitable protective equipment must be used All persons not involved must be kept at a safe distance from the welding process
	Do not use the functions described here until you have fully read and understood the following documents: These Operating Instructions all the Operating Instructions for the system components of the power source, especially the safety rules
	Do not dispose of used devices with domestic waste. Dispose of them according to the safety rules.

The power source is intended exclusively for MMA welding and TIG welding in conjunction with system components from Fronius.
Utilisation for any other purpose, or in any other manner, shall be deemed to be not in accordance with the intended purpose.
The manufacturer shall not be held liable for any damages arising from such usage.

• carefully reading these operating instructions
• following all the instructions and safety rules in these operating instructions
• performing all stipulated inspection and maintenance work

• Protection against penetration by solid foreign bodies with diameters > 12.5 mm (0.49 in.)
• Protected against spraywater at any angle up to 60° to the vertical

Cooling air
The device must be set up in such a way that cooling air can flow freely through the slots in the front and rear panels.

Dust
Ensure that metallic dust is not sucked into the system by the fan, when carrying out grinding for example.

Outdoor operation
The device can be set up and operated outdoors in accordance with IP23 degree of protection. Avoid direct wetting (e.g. from rain).

The power source is generator-compatible.

In order to dimension the required generator output, the maximum apparent power S_1max of the power source is required.

The maximum apparent power S_1max of the power source can be calculated as follows:
S_1max = I_1max x U₁

See device rating plate or technical data for I_1max and U₁ values

The generator apparent power S_GEN needed is calculated using the following rule of thumb:
S_GEN = S_1max x 1.35

A smaller generator may be used when not welding at full power.

IMPORTANT! The generator apparent power S_GEN must always be higher than the maximum apparent power S_1max of the power source.

When using single-phase devices with a 3-phase generator, note that the specified generator apparent power is often only available as a whole across all three phases of the generator. If necessary, obtain further information on the single-phase power of the generator from the generator manufacturer.

As a result of software updates, you may find that there are functions available on your device that are not described in these Operating Instructions, or vice versa.
Certain illustrations may also differ slightly from the actual controls on your device, but these controls function in exactly the same way.

As a result of software updates, you may find that there are functions available on your device that are not described in these Operating Instructions, or vice versa.
Certain illustrations may also differ slightly from the actual controls on your device, but these controls function in exactly the same way.

• (+) current socket for electrode holder or grounding cable
• (-) current socket for electrode holder or grounding cable

• (+) current socket for grounding cable
• (-) current socket for welding torch

• (+) current socket for electrode holder or grounding cable
• (-) current socket for electrode holder or grounding cable

• (+) current socket for grounding cable
• (-) current socket for welding torch

This function is used to set the starting current.

Setting range: 1 - 200 %

Operating principle:
At the start of the welding process, the welding current is reduced (SoftStart) or increased (HotStart) for 0.5 seconds, depending on the setting.
The change is shown as a percentage from the set welding current.

The duration of the starting current can be changed in the Setup menu using the starting current duration (Hti) parameter.

Setting the starting current:

1Press the setting value button until
	the SoftStart / HotStart indicator lights up
2Turn the adjusting dial until the desired value is reached power source is ready for welding

• TransPocket 150 to 160 A
• TransPocket 180 to 200 A

Example of HotStart function

Features of SoftStart function:

• Reduced pore formation with certain electrode types

Features of HotStart function:

• Improved ignition properties, even when using electrodes with poor ignition properties
• Better fusion of the base material during the start-up phase, meaning fewer cold-shut defects
• Largely prevents slag inclusions

To obtain optimum welding results, it will sometimes be necessary to adjust the arc-force dynamic.

Setting range: 0 - 100 (corresponds to 0 - 200 A current increase)

Operating principle:
At the moment of droplet transfer or in the event of a short circuit, the amperage is briefly increased in order to obtain a stable arc.
If the rod electrode threatens to sink into the weld pool, this measure prevents the weld pool solidifying, as well as preventing a prolonged short-circuit of the arc. This largely prevents the rod electrode from sticking.

Setting the arc-force dynamic:

1Press the setting value button until
	the arc-force dynamic indicator lights up
2Turn the adjusting dial until the desired correction value is reached power source is ready for welding

• TransPocket 150 to 180 A
• TransPocket 180 to 220 A

• Arc-force dynamic = 0
  • arc-force dynamic deactivated
  • soft, low-spatter arc
• Arc-force dynamic = 20
  • arc-force dynamic with 40 A current increase
  • harder, more stable arc
• Arc-force dynamic = 60, set welding current = 100 A
  • for the TransPocket 150: actual increase is just 80 A as the maximum current limit is reached!
  • for the TransPocket 180: arc-force dynamic with 120 A current increase

Pulse welding is welding with a pulsing welding current. It is used for out-of-position welding of steel pipes or when welding thin sheets.

• if the amperage is too low, the base material will not melt sufficiently
• if overheating occurs, the liquid weld pool may drip

Setting range: 0.2 - 990 Hz

• A low base current I-G rises steeply to the significantly higher pulse current I-P and drops back to the base current I-G after the Duty cycle dcY time. The pulse current I-P can be set on the power source.
• This results in an average current that is lower than the set pulse current I-P.
• During pulse welding, small sections of the welding location melt quickly and then rapidly re-solidify.

The power source controls the Duty cycle dcY parameter and base current I-G according to the set pulse current and pulse frequency.

Pulse welding - welding current curve

• F-P: Pulse frequency (1/F-P = time interval between two pulses)
• I-P:  Pulse current
• SoftStart/HotStart

• I-G: Base current
• dcY: Duty cycle

To use pulse welding:

1   Press the setting value button until
   the pulse welding indicator lights up

2   Turn the adjusting dial until the desired frequency value (Hz) is reached

• power source is ready for welding

To activate and set the TIG Comfort Stop function, see the description Comfort Stop Sensitivity starting on page (→).

Operating principle and use of the TIG Comfort Stop:

Welding current and gas flow curve with TIG Comfort Stop function activated

DownSlope:
The DownSlope time t_down is 0.5 seconds and cannot be adjusted.

Gas post-flow:
The gas post-flow must be carried out manually.

Under normal operating conditions, the device requires only a minimum of care and maintenance. However, it is vital to observe some important points to ensure the device remains in a usable condition for many years.

• Ensure that the mains plug and mains cable as well as the welding torch / electrode holder are undamaged. Replace any damaged components
• Ensure that the welding torch / electrode holder and the grounding cable are properly connected to the power source and screwed/locked in place as described in this document
• Ensure that a proper ground earth connection has been established to the workpiece
• Check that there is an all-round clearance of 0.5 m (1 ft. 8 in.) around the device to ensure that cooling air can flow and escape unhindered. Air inlets and outlets must never be covered, not even partially.

Dispose of in accordance with the applicable national and local regulations.

When E and a 2 digit error number appear in the display (e.g. E02) and the "Error" indicator lights up, this is an internal power source service code.
Example:

It is also possible that several error numbers are present. These appear when turning the adjusting dial.

Make a note of the error numbers shown in the display, and of the serial number and configuration of the power source, and contact our after-sales service team with a detailed description of the error.

Duty cycle (ED) is the proportion of time in a 10-minute cycle at which the device may be operated at its rated output without overheating.

Example: Welding at 150 A at 60% ED

• Welding phase = 60% of 10 minutes = 6 minutes
• Cooling phase = remaining time = 4 minutes
• After the cooling phase, the cycle begins again.

If the device is to be continuously operated without stopping:

Duty cycle (ED) is the proportion of time in a 10-minute cycle at which the device may be operated at its rated output without overheating.

Example: Welding at 150 A at 60% ED

• Welding phase = 60% of 10 minutes = 6 minutes
• Cooling phase = remaining time = 4 minutes
• After the cooling phase, the cycle begins again.

If the device is to be continuously operated without stopping:

Overview with critical raw materials:
An overview of which critical raw materials are contained in this device can be found at the following Internet address.
www.fronius.com/en/about-fronius/sustainability.

• Each device is provided with a serial number
• The serial number consists of 8 digits - for example 28020099
• The first two digits give the number from which the year of production of the device can be calculated
• This figure minus 11 gives the year of production
  • For example: Serial number = 28020065, calculation of the year of production = 28 - 11 = 17, year of production = 2017