MTG/MTW/MTB/MHP 250d-700d ML /G/W/K4

The MIG/MAG manual welding torch is intended solely for MIG/MAG welding in manual applications.
Any use above and beyond this purpose is deemed improper. The manufacturer shall not be held liable for any damage arising from such usage.

Proper use includes:

Carefully reading and following all the instructions given in the operating instructions
Performing all stipulated inspection and maintenance work.

The MIG/MAG manual welding torch is intended solely for MIG/MAG welding in manual applications.
Any use above and beyond this purpose is deemed improper. The manufacturer shall not be held liable for any damage arising from such usage.

Proper use includes:

Carefully reading and following all the instructions given in the operating instructions
Performing all stipulated inspection and maintenance work.

WARNING!

Danger from incorrect operation and work that is not carried out properly.

This can result in serious personal injury and damage to property.

All the work and functions described in this document must only be carried out by technically trained and qualified personnel.

Read and understand this document in full.

Read and understand all safety rules and user documentation for this device and all system components.

WARNING!

Danger from electrical current.

This can result in serious personal injury and damage to property.

Before starting work, switch off all devices and components involved and disconnect them from the grid.

Secure all devices and components involved so they cannot be switched back on.

WARNING!

Danger from electric current due to defective system components and incorrect operation.

This can result in serious personal injury and damage to property.

All cables, leads and hosepacks must always be securely connected, undamaged and correctly insulated.

Only use adequately dimensioned cables, leads and hosepacks.

WARNING!

Risk of coolant escaping.

This can result in serious personal injury and damage to property.

When disconnecting a welding torch from the cooling unit or other system components, always seal the coolant hoses using the plastic seal attached to the torch.

WARNING!

Danger due to hot system components and/or equipment.

Can result in serious burns or scalding.

Before starting work, allow all hot system components and/or equipment to cool to +25°C/+77°F (e.g., coolant, water-cooled system components, wirefeeder drive motor, etc.)

Wear suitable protective equipment (e.g., heat-resistant gloves, safety goggles, etc.) if cooling down is not possible.

WARNING!

Danger from contact with toxic welding fumes.

This can result in serious personal injuries.

Always extract welding fumes.

Ensure an adequate supply of fresh air. Ensure that there is a ventilation rate of at least 20 m³ (169070.1 US gi) per hour at all times.

If in doubt, a safety engineer should be commissioned to check the pollution level in the workplace.

CAUTION!

Danger from operation without coolant.

This can result in damage to property.

Never operate water-cooled welding torches without coolant.

During welding, ensure that the coolant is circulating correctly – this will be the case for Fronius cooling units if a regular return flow of coolant can be seen in the coolant container of the cooling unit.

The manufacturer will not be liable for any damages due to non-observance of the above mentioned points. All claims against the warranty are void.

WARNING!

Danger from the fumes produced during welding, which contain harmful gases and vapours.

These can cause severe damage to health.

A welding operation is not permitted without an extraction unit that is switched on.

Under certain circumstances, the sole use of a fume extraction torch is not sufficient.
In this case, install an additional extractor to reduce the pollution level in the workplace.

If in doubt, a safety engineer should be commissioned to check the pollution level in the workplace.

Select one of the following parameters on the power source:
- Wire feed speed
- Job number
Set the parameters using the Up/Down function

IMPORTANT! In the "MIG/MAG Standard Synergic and Pulse Synergic Welding" operating modes, extra parameters can be set.

Select one of the following parameters on the power source:
- Wire feed speed
- Job number
Set the parameters using the Up/Down function

IMPORTANT! In the "MIG/MAG Standard Synergic and Pulse Synergic Welding" operating modes, extra parameters can be set.

IMPORTANT! Coded messages can appear on the JobMaster.
These correspond to the service code displayed on the control panel at the same time (see the "Troubleshooting" section of the power source operating instructions).

SynchroPulse (option) - no symbol lights up on the JobMaster (see the "MIG/MAG welding" section of the power source operating instructions).

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The MTG 400d K4 and MTW 500d K4 fume extraction torches capture the harmful welding fumes directly at source.
The welding fumes are extracted, before they get into the welder's breathing zone.
Legal specified values for the maximum workplace concentration (MAK) are adhered to or undercut.

The extraction unit for the fume extraction torch must comply with the following specifications:

Suction power	Approx. 100 m³/h
Negative pressure values	Between 0.05 and 0.2 bar (between 5000 and 20000 Pa)

The quantity of extracted welding fumes can be continuously controlled between 10 and 100% using the air chamber during the welding process.

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IMPORTANT! Regulation of the extracted welding fume quantity is required if the shielding gas is extracted with the welding fumes (e.g. when welding in a corner position).

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**	Screw on and tighten the gas nozzle as far as it will go

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**	Screw on and tighten the gas nozzle as far as it will go

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** Screw on and tighten the gas nozzle as far as it will go

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Fit the extraction nozzle

NOTE!

Risk of damage to the welding torch. Always tighten the union nut on the torch body as far as it will go.

NOTE!

In the case of water-cooled welding torches, increased resistance may arise when tightening the union nut due to the construction of the welding torch. This is normal. Always tighten the union nut on the torch body as far as it will go.

NOTE!

Before fitting a torch body, ensure that the interface between the torch body and the hosepack is clean and undamaged.

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NOTE!

The torch body is in the 0° position when the dowel pin (A) on the hosepack engages in the locating hole (B) in the torch body.

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*	Ensure that the union nut is tightened as far as it will go.

NOTE!

Risk of damage to the welding torch. Always tighten the union nut on the torch body as far as it will go.

NOTE!

In the case of water-cooled welding torches, increased resistance may arise when tightening the union nut due to the construction of the welding torch. This is normal. Always tighten the union nut on the torch body as far as it will go.

NOTE!

Before fitting a torch body, ensure that the interface between the torch body and the hosepack is clean and undamaged.

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NOTE!

The torch body is in the 0° position when the dowel pin (A) on the hosepack engages in the locating hole (B) in the torch body.

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*	Ensure that the union nut is tightened as far as it will go.

* Check the clamping nipple before commissioning and whenever the inner liner is changed. To do so, carry out a visual inspection:

Left: brass clamping nipple with seal ring. You cannot see through the seal ring.
Right: silver clamping nipple with see-through bushing

NOTE!

Incorrect or defective clamping nipple in push applications

Causes gas loss and poor weld properties

use brass clamping nipples to minimise gas loss

check that the seal ring is intact

NOTE!

Incorrect clamping nipple in push-pull applications

Tangled wire and increased abrasion in the inner liner when using a clamping nipple with seal ring

use silver clamping nipple to facilitate wirefeeding

* Check the clamping nipple before commissioning and whenever the inner liner is changed. To do so, carry out a visual inspection:

Left: brass clamping nipple with seal ring. You cannot see through the seal ring.
Right: silver clamping nipple with see-through bushing

NOTE!

Incorrect or defective clamping nipple in push applications

Causes gas loss and poor weld properties

use brass clamping nipples to minimise gas loss

check that the seal ring is intact

NOTE!

Incorrect clamping nipple in push-pull applications

Tangled wire and increased abrasion in the inner liner when using a clamping nipple with seal ring

use silver clamping nipple to facilitate wirefeeding

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F++, F:

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Euro:

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NOTE!

Round off the end of the wire electrode before feeding it in.

Applicable for Teflon liners, combination liners and Graphite liners

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* Infeed tube option (42,0001,5421)

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*	LocalNet plug (Standard or Up/Down welding torches)
**	JobMaster plug (JobMaster welding torches)

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*	LocalNet plug (Standard or Up/Down welding torches)
**	JobMaster plug (JobMaster welding torches)

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*	LocalNet plug (Standard or Up/Down welding torches)
**	JobMaster plug (JobMaster welding torches)

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*	LocalNet plug (Standard or Up/Down welding torches)
**	JobMaster plug (JobMaster welding torches)

1Connect the hose for the extractor corresponding to the standard values for extraction units to the extraction unit

CAUTION!

Risk of burns from hot coolant and hot torch body.

Before carrying out any work, allow the coolant and torch body to cool to room temperature (+25°C, +77°F).

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*	Ensure that the union nut is tightened as far as it will go.

CAUTION!

Risk of burns from hot coolant and hot torch body.

This can result in severe scalds.

Before carrying out any work, allow the coolant and torch body to cool to room temperature (+25°C, +77°F).

NOTE!

Some coolant will always remain in the torch body.

Only remove the torch body with the gas nozzle pointing downwards.

NOTE!

Before fitting a torch body, ensure that the interface between the torch body and the hosepack is clean and undamaged.

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NOTE!

The torch body is in the 0° position when the dowel pin (A) on the hosepack engages in the locating hole (B) in the torch body.

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*	Ensure that the union nut is tightened as far as it will go.

Ensure that the machine welding torch to be worked on is only ever clamped in a suitable Prisma holder.

Regular preventive maintenance of the welding torch is essential if trouble-free operation is to be ensured. The welding torch is subjected to high temperatures and heavy soiling. The welding torch therefore requires more frequent maintenance than other components in the welding system.

CAUTION!

Risk of damage from improper handling of the welding torch.

This can result in severe damage to property.

Do not strike the welding torch on hard objects.

Avoid scoring and scratches on the contact tip.

Do not bend the torch body under any circumstances.

Regular preventive maintenance of the welding torch is essential if trouble-free operation is to be ensured. The welding torch is subjected to high temperatures and heavy soiling. The welding torch therefore requires more frequent maintenance than other components in the welding system.

CAUTION!

Risk of damage from improper handling of the welding torch.

This can result in severe damage to property.

Do not strike the welding torch on hard objects.

Avoid scoring and scratches on the contact tip.

Do not bend the torch body under any circumstances.

Insulating parts
- Burned-off outside edges, notches
Nozzle fittings
- Burned-off outside edges, notches
- Heavily covered in welding spatter
Spatter guard
- Burned-off outside edges, notches
Contact tips
- Worn-out (oval) wire entry and wire exit holes
- Heavily covered in welding spatter
- Penetration on the tip of the contact tip
Gas nozzles
- Heavily covered in welding spatter
- Burned-off outside edges
- Notches

Check wearing parts
- replace faulty wearing parts
Remove welding spatter from gas nozzle

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*	Check the gas nozzle, spatter guard and insulation for damage and replace any damaged components.

Also at every start-up when using water-cooled welding torches:
- check all coolant connections for tightness (no leaks)
- check that the coolant can flow unhindered

Clean wirefeeding hose with reduced compressed air
Recommended: replace the inner liner. Clean the wearing parts before fitting the new inner liner

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No welding current

Power source mains switch is on, indicators on the power source are lit up, shielding gas available

Cause:	Grounding (earthing) connection is incorrect
Remedy:	Establish a proper grounding (earthing) connection
Cause:	There is a break in the current cable in the welding torch
Remedy:	Replace welding torch

Nothing happens when the torch trigger is pressed

Power source mains switch is on, indicators on the power source are lit up

Cause:	The FSC ('Fronius System Connector' central connector) is not plugged in properly
Remedy:	Push on the FSC as far as it will go
Cause:	Welding torch or welding torch control line is faulty
Remedy:	Replace welding torch
Cause:	Interconnecting hosepack faulty or not connected properly
Remedy:	Connect interconnecting hosepack properly Replace faulty interconnecting hosepack
Cause:	Faulty power source
Remedy:	Contact After-Sales Service

No shielding gas

All other functions are OK

Cause:	Gas cylinder is empty
Remedy:	Change the gas cylinder
Cause:	Gas pressure regulator is faulty
Remedy:	Replace gas pressure regulator
Cause:	The gas hose is not connected, or is damaged or kinked
Remedy:	Fit gas hose, lay out straight Replace faulty gas hose
Cause:	Welding torch is faulty
Remedy:	Replace welding torch
Cause:	Gas solenoid valve is faulty
Remedy:	Contact After-Sales Service (arrange for gas solenoid valve to be replaced)

Poor weld properties

Cause:	Incorrect welding parameters
Remedy:	Correct settings
Cause:	Poor grounding (earthing) connection
Remedy:	Ensure good contact to workpiece
Cause:	Too little or no shielding gas
Remedy:	Check the pressure regulator, gas hose, gas solenoid valve and welding torch shielding gas connection. On gas-cooled welding torches, inspect the gas seals, use a suitable inner liner
Cause:	Welding torch is leaking
Remedy:	Replace welding torch
Cause:	Contact tip is too large or worn out
Remedy:	Replace contact tip
Cause:	Wrong wire alloy or wrong wire diameter
Remedy:	Check wirespool/basket-type spool in use
Cause:	Wrong wire alloy or wrong wire diameter
Remedy:	Check weldability of the base material
Cause:	The shielding gas is not suitable for this wire alloy
Remedy:	Use the correct shielding gas
Cause:	Unfavourable welding conditions: shielding gas is contaminated (by moisture, air), inadequate gas shield (weld pool "boiling", draughts), contaminants in the workpiece (rust, paint, grease)
Remedy:	Optimise the welding conditions
Cause:	Shielding gas escaping at clamping nipple
Remedy:	Use the correct clamping nipple
Cause:	Clamping nipple seal ring defective, shielding gas escaping at clamping nipple
Remedy:	Replace clamping nipple to ensure a gas-tight seal
Cause:	Welding spatter in the gas nozzle
Remedy:	Remove welding spatter
Cause:	Turbulence caused by too high a rate of shielding gas flow
Remedy:	Reduce shielding gas flow rate, recommended: shielding gas flow rate (l/min) = wire diameter (mm) x 10 (e.g. 16 l/min for 1.6 mm wire electrode)
Cause:	Distance between the welding torch and the workpiece too great
Remedy:	Reduce the distance between the welding torch and the workpiece (approx. 10 - 15 mm / 0.39 - 0.59 in.)
Cause:	Tilt angle of the welding torch is too great
Remedy:	Reduce the tilt angle of the welding torch
Cause:	Wirefeed components do not match the diameter of the wire electrode/wire electrode material
Remedy:	Use the correct wirefeed components

Poor wirefeeding

Cause:	Depending on the system, brake force in wirefeeder or power source set too high
Remedy:	Reduce the brake force
Cause:	Hole in the contact tip is displaced
Remedy:	Change the contact tip
Cause:	The inner liner or wire-guide insert is defective
Remedy:	Check the inner liner and wire-guide insert for kinks, dirt, etc. Change the defective inner liner or wire-guide insert
Cause:	The feed rollers are not suitable for the wire electrode being used
Remedy:	Use suitable wirefeeder rollers
Cause:	Wirefeeder rollers have the wrong contact pressure
Remedy:	Optimise contact pressure
Cause:	The wirefeeder rollers are soiled or damaged
Remedy:	Clean or replace wirefeeder rollers
Cause:	Inner liner wrongly fitted or kinked
Remedy:	Replace inner liner
Cause:	The inner liner has been cut too short
Remedy:	Replace the inner liner and cut the new inner liner to the correct length
Cause:	Wire electrode worn due to excessive contact pressure on the wirefeeder rollers
Remedy:	Reduce contact pressure on the wirefeeder rollers
Cause:	Wire electrode contains impurities or is corroded
Remedy:	Use high-quality wire electrode with no impurities
Cause:	For steel inner liners: use of uncoated inner liner
Remedy:	Use a coated inner liner
Cause:	Clamping nipple in wire entry and wire exit area deformed (oval, knocked out), shielding gas escaping at clamping nipple
Remedy:	Replace clamping nipple to ensure a gas-tight seal

The gas nozzle becomes very hot

Cause:	No thermal dissipation as the gas nozzle is too loose
Remedy:	Screw on the gas nozzle as far as it will go

The welding torch becomes very hot

Cause:	Only on Multilock welding torches: torch neck union nut is loose
Remedy:	Tighten the union nut
Cause:	Welding torch operated above the maximum welding current
Remedy:	Reduce welding power or use a more powerful welding torch
Cause:	The specification of the welding torch is inadequate
Remedy:	Observe the duty cycle and loading limits
Cause:	Only on water-cooled systems: Inadequate coolant flow
Remedy:	Check coolant level, coolant flow, coolant contamination, the routing of the hosepack, etc.
Cause:	The tip of the welding torch is too close to the arc
Remedy:	Increase stick-out

Contact tip has a short service life

Cause:	Incorrect wirefeeder rollers
Remedy:	Use correct wirefeeder rollers
Cause:	Wire electrode worn due to excessive contact pressure on the wirefeeder rollers
Remedy:	Reduce contact pressure on the wirefeeder rollers
Cause:	Wire electrode contains impurities/is corroded
Remedy:	Use high-quality wire electrode with no impurities
Cause:	Uncoated wire electrode
Remedy:	Use wire electrode with suitable coating
Cause:	Wrong dimension of contact tip
Remedy:	Use a contact tip of the correct dimension
Cause:	Duty cycle of welding torch has been exceeded
Remedy:	Shorten the duty cycle or use a more powerful welding torch
Cause:	Contact tip has overheated. No thermal dissipation as the contact tip is too loose
Remedy:	Tighten the contact tip
NOTE! When using CrNi, the contact tip may be subject to a higher degree of wear due to the nature of the surface of the CrNi wire electrode.

Torch trigger malfunction

Cause:	Defective plug connection between welding torch and power source
Remedy:	Establish proper plug connections / have power source or welding torch serviced
Cause:	Build up of dirt between torch trigger and torch trigger housing
Remedy:	Clean away the dirt
Cause:	Control line is faulty
Remedy:	Contact After-Sales Service

Weld seam porosity

Cause:	Spattering in the gas nozzle causing inadequate gas shield for weld seam
Remedy:	Remove welding spatter
Cause:	Holes in gas hose or hose is not connected properly
Remedy:	Replace gas hose
Cause:	O-ring on central connector has been cut or is faulty
Remedy:	Replace O-ring
Cause:	Moisture/condensation in the gas line
Remedy:	Dry gas line
Cause:	Gas flow is either too high or too low
Remedy:	Correct gas flow
Cause:	Insufficient gas flow at start or end of welding
Remedy:	Increase gas pre-flow and gas post-flow
Cause:	Rusty or poor quality wire electrode
Remedy:	Use high-quality wire electrode with no impurities
Cause:	Applies to gas-cooled welding torches: gas is escaping through a non-insulated inner liner
Remedy:	Use only insulated inner liners with gas-cooled welding torches
Cause:	Too much parting agent applied
Remedy:	Remove excess parting agent/apply less parting agent
Cause:	Too much suction
Remedy:	Reduce suction

Too little suction

Cause:	Hole(s) in the extraction hose
Remedy:	Replace extraction hose
Cause:	Extraction unit filter blocked
Remedy:	Replace extraction unit filter
Cause:	Air passages blocked
Remedy:	Remove blockages
Cause:	Extraction capacity of the extraction unit too low; OPT/i FumeEx configured incorrectly
Remedy:	Use an extraction unit with a higher extraction capacity; increase the extraction capacity

Voltage measurement (V-Peak):

for manually-operated welding torches: 113 V
for mechanically-driven welding torches: 141 V

Torch trigger technical data:

U_max = 5 V
I_max = 10 mA

The torch trigger may only be operated in accordance with the technical data.

The product conforms to the requirements of IEC 60974-7 / - 10 Class A.

Voltage measurement (V-Peak):

for manually-operated welding torches: 113 V
for mechanically-driven welding torches: 141 V

Torch trigger technical data:

U_max = 5 V
I_max = 10 mA

The torch trigger may only be operated in accordance with the technical data.

The product conforms to the requirements of IEC 60974-7 / - 10 Class A.

		MTG 250d	MTG 320d	MTG 400d	MTG 500d
I (amp.) 10 min/40°C CO²		40% D.C.* 250 60% D.C.* 200 100% D.C.* 170	40% D.C.* 320 60% D.C.* 260 100% D.C.* 210	40% D.C.* 400 60% D.C.* 320 100% D.C.* 260	40% D.C.* 500 60% D.C.* 400 100% D.C.* 320
I (amp.) 10 min/40°C M21		40% D.C.* 200 60% D.C.* 160 100% D.C.* 120	40% D.C.* 260 60% D.C.* 210 100% D.C.* 160	40% D.C.* 320 60% D.C.* 260 100% D.C.* 210	40% D.C.* 400 60% D.C.* 320 100% D.C.* 260
	[mm (in.)]	0.8-1.2 (0.032-0.047)	0.8-1.6 (0.032-0.063)	1.0-1.6 (0.039-0.063)	1.0-1.6 (0.039-0.063)
	[m (ft.)]	3,5 / 4,5 (12 / 15)	3,5 / 4,5 (12 / 15)	3,5 / 4,5 (12 / 15)	3,5 / 4,5 (12 / 15)
* D.C. = Duty cycle

		MTB 250i G ML	MTB 320i G ML	MTB 330i G ML
I (ampere) 10 min/40°C M21+C1 (EN 439)		40 % ED* 250 60 % ED* 200 100 % ED* 170	40 % ED* 320 60 % ED* 260 100 % ED* 210	40 % ED* 330 60 % ED* 270 100 % ED* 220
	[mm (in.)]	0.8-1.2 (0.032-0.047)	0.8-1.6 (0.032-0.063)	0.8-1.6 (0.032-0.063)
* ED = Duty cycle

		MTB 400i G ML	MTB 550i G ML
I (ampere) 10 min/40°C C1 (EN 439)		-	30 % ED* 550
I (ampere) 10 min/40°C M21 (EN 439)		-	30 % ED* 520
I (ampere) 10 min/40°C M21+C1 (EN 439)		40 % ED* 400 60 % ED* 320 100 % ED* 260	- 60 % ED* 420 100 % ED* 360
	[mm (in.)]	0.8-1.6 (0.032-0.063)	0.8-1.6 (0.032-0.063)
* ED = Duty cycle

		MHP 400d G ML
I (ampere) 10 min/40 °C CO²		40% D.C.* 400 60% D.C.* 320 100% D.C.* 260
I (ampere) 10 min/40 °C M21		40% D.C.* 320 60% D.C.* 260 100% D.C.* 210
	[mm (in.)]	0.8-1.6 (0.032-0.063)
	[m (ft.)]	3.35 / 4.35 (11 / 14)
* D.C. = Duty cycle

		MHP 500d G ML M
I (amp.) 10 min/40 °C CO²		40% D.C.* 500 60% D.C.* 400 100% D.C.* 320
I (amp.) 10 min/40 °C M21		40% D.C.* 400 60% D.C.* 320 100% D.C.* 260
	[mm (in.)]	0.8-1.6 (0.032-0.063)
	[m (ft.)]	1.35 / 2.35 / 3.35 (4.4 / 7.7 / 14)
* D.C. = Duty cycle

		MTW 250d	MTW 400d	MTW 500d	MTW 700d
I (ampere) 10 min/40°C CO²		100% D.C.* 250	100% D.C.* 400	100% D.C.* 500	100% D.C.* 700
I (ampere) 10 min/40°C M21		100% D.C.* 200	100% D.C.* 320	100% D.C.* 400	100% D.C.* 560
	[mm (in.)]	0.8-1.2 (0.032-0.047)	0.8-1.6 (0.032-0.063)	0.8-1.6 (0.032-0.063)	0.8-1.6 (0.032-0.063)
Q_min	[l/min (gal./min)]	1 (.26)	1 (.26)	1 (.26)	1 (.26)
P_min	[W]**	500 (3,5 m) 600 (4,5 m)	800 (3,5 m) 950 (4,5 m)	1400 (3,5 m) 1700 (4,5 m)	1800 (3,5 m) 2200 (4,5 m)
P_min	[bar (psi.)]	3 (43)	3 (43)	3 (43)	3 (43)
P_max	[bar (psi.)]	5 (72)	5 (72)	5 (72)	5 (72)
	[m (ft.)]	3,5 / 4,5 (12 / 15)	3,5 / 4,5 (12 / 15)	3,5 / 4,5 (12 / 15)	3,5 / 4,5 (12 / 15)
* D.C. = Duty cycle
** Lowest cooling power according to IEC 60974-2

		MTB 250i W ML	MTB 330i W ML	MTB 400i W ML	MTB 500i W ML
I (ampere) 10 min/40°C M21+C1 (EN 439)		100 % ED* 250	100 % ED* 330	100 % ED* 400	100 % ED* 500
	[mm (in.)]	0.8-1.2 (0.032-0.047)	0.8-1.6 (0.032-0.063)	0.8-1.6 (0.032-0.063)	1.0-1.6 (0.039-0.063)
Q_min	[l/min (gal./min)]	1 (0.26)	1 (0.26)	1 (0.26)	1 (0.26)
* ED = Duty cycle

		MTB 700i W ML
I (ampere) 10 min/40°C M21+C1 (EN 439)		100 % ED* 700
	[mm (in.)]	1.0-1.6 (0.039-0.063)
Q_min	[l/min (gal./min)]	1 (0.26)
* ED = Duty cycle

		MHP 500d W ML	MHP 700d W ML
I (ampere) 10 min/40 °C CO²		100% D.C.* 500	100% D.C.* 700
I (ampere) 10 min/40 °C M21		100% D.C.* 400	100% D.C.* 560
	[mm (in.)]	0.8-1.6 (0.032-0.063)	0.8-1.6 (0.032-0.063)
	[m (ft.)]	3.35 / 4.35 (11 / 14)	3.35 / 4.35 (11 / 14)
P_min	[W]**	1400 / 1700	1800 / 2200
Q_min	[l/min (gal./min.)]	1 (.26)	1 (.26)
P_min	[bar (psi.)]	3 (43)	3 (43)
P_max	[bar (psi.)]	5 (72)	5 (72)
* D.C. = Duty cycle
** Lowest cooling power according to IEC 60974-2

		MHP 700d W ML M
I (ampere) 10 min/40 °C CO²		100% D.C.* 700
I (ampere) 10 min/40 °C M21		100% D.C.* 560
	[mm (in.)]	0.8-1.6 (0.032-0.063)
	[m (ft.)]	1.35 / 2.35 / 3.35 (4.4 / 7.7 / 14)
P_min	[W]**	1100 / 1450 / 1800
Q_min	[l/min (gal./min)]	1 (.26)
P_min	[bar (psi.)]	3 (43)
P_max	[bar (psi.)]	5 (72)
* D.C. = Duty cycle
** Lowest cooling power according to IEC 60974-2

		MTG 400d K4
I (ampere) 10 min/40 °C CO₂ / mixed		40% D.C.* 400 60% D.C.* 320 100% D.C.* 260
	[mm (in.)]	0.8-1.6 (0.032-0.063)
	[m (ft.)]	4.5 (15)
* D.C. = Duty cycle

		MTW 500d K4
I (ampere) 10 min/40 °C CO₂ / mixed		100 % D.C.* 500
	[mm (in.)]	0,8-1,6 (.032-.063)
	[m (ft.)]	4,5 (15)
P_max	[W]**	1700
Q_min	[l/min (gal./min)]	1 (26)
p_min	[bar (psi.)]	3 (43)
p_max	[bar (psi.)]	5 (72)
* D.C. = Duty cycle
** Lowest cooling power according to standard IEC 60974-2

MTG/MTW/MTB/MHP 250d-700d ML /G/W/K4

Safety

Proper use

Proper use

Safety

WARNING!

WARNING!

WARNING!

WARNING!

WARNING!

WARNING!

CAUTION!

Danger from welding fumes

WARNING!

MTG d, MTW d, MHP d - General

Up/Down function

Up/Down function

JobMaster function

MTG 400d K4, MTW 500d K4 - General

General

General

Standard values for extraction units

Air chamber

Up/Down function

Fitting wearing parts to the torch neck

MTG d, MTW d - Fitting wearing parts to the torch body

MTG d, MTW d - Fitting wearing parts to the torch body

MTG 400d K4, MTW 500d K4 - Fitting wearing parts

Fitting the ML torch body to the MHP hosepack

Assembling the Multilock welding torch

NOTE!

NOTE!

NOTE!

NOTE!

Assembling the Multilock welding torch

NOTE!

NOTE!

NOTE!

NOTE!

Fitting the inner liners

Checking the clamping nipple

NOTE!

NOTE!

Checking the clamping nipple

NOTE!

NOTE!

Fitting the steel inner liner

Fitting the plastic inner liner (F, F++)

Fitting the plastic inner liner (Fronius connection with wirefeeding nozzle)

NOTE!

Fitting the plastic inner liner (Euro)

Start-up

Connecting the welding torch

Connecting the welding torch

Connecting the extractor

Twisting the Multilock welding torch body

CAUTION!

Changing the torch body on a Multilock welding torch

CAUTION!

NOTE!

NOTE!

NOTE!

Prisma holder for machine welding torch

Care and maintenance

General

CAUTION!

General

CAUTION!

Recognising faulty wearing parts

Maintenance at every start-up

Maintenance every time the wirespool/basket-type spool is changed:

Troubleshooting

Troubleshooting

Troubleshooting

NOTE!

Technical data

General

General

Gas-cooled welding torch - MTG 250d - 500d

Gas-cooled torch body - MTB 250i, 320i, 330i, 400i, 550i G ML