Prest-O-Lite 150v, 200, 270 and 340 MXL Torches User manual

Brand: Prest-O-Lite

Model: 150v, 200, 270 and 340 MXL Torches

Category: Welding System

Type: User manual

This manual is also suitable for

150v, 200, 270 and 340

MXL Torches

Form No: 0558007454 03 / 2007

Instruction Manual

Installation, Operation and Service

These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of opera-

tion and safe practices for arc welding and cutting equipment, we urge you to read our booklet, "Precautions

and Safe Practices for Arc Welding, Cutting, and Gouging," Form 52-529. Do NOT permit untrained persons to

install, operate, or maintain this equipment. Do NOT attempt to install or operate this equipment until you

have read and fully understand these instructions. If you do not fully understand these instructions, contact

your supplier for further information. Be sure to read the Safety Precautions before installing or operating

this equipment.

Be sure this information reaches the operator.

You can get extra copies through Your supplier.

USER RESPONSIBILITY

This equipment will perform in conformity with the description thereof contained in this manual and

accompanying labels and/or inserts when installed, operated, maintained and repaired in accordance

with the instructions provided. This equipment must be checked periodically. Malfunctioning or poorly

maintained equipment should not be used. Parts that are broken, missing, worn, distorted or contami-

nated should be replaced immediately. Should such repair or replacement become necessary, the manu-

facturer recommends that a telephone or written request for service advice be made to the Authorized

Distributor from whom it was purchased.

This equipment or any of its parts should not be altered without the prior written approval of the manu-

facturer. The user of this equipment shall have the sole responsibility for any malfunction which results

from improper use, faulty maintenance, damage, improper repair or alteration by anyone other than the

manufacturer or a service facility designated by the manufacturer.

CAUTION

ENGLISH

-- 1 --

TOCe

1 DIRECTIVE 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 SAFETY 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 INTRODUCTION 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 SHIPMENT AND PACKAGING 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 TECHNICAL DATA 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 OPERATION 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 Fitting the liner 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.2 Assembling the swan neck 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.3 Fitting the central adaptor assembly to the equipment 6. . . . . . . . . . . . . . . . . . . . . . . . . .

6.4 Setting the level of shielding gas 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.5 Checklist 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.6 Changing wire 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 MAINTENANCE 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.1 Cable assembly 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2 Cleaning the wire feed 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 Spiral liner / PTFE liner 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.4 Cleaning the swan neck 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 FAULT--TRACING 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 DISASSEMBLY AND DISPOSAL 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 IN THE EVENT OF AN EMERGENCY 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 ORDERING OF SPARE PARTS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ORDERING NUMBER 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPARE PARTS LIST 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WEAR PARTS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE OF CONTENTS

DIRECTIVE

DECLARATION OF CONFORMITY

ESAB AB, Welding Equipment, S--695 81 Laxå, Sweden, gives its unreserved guarantee that torch

MXL 150v, MXL 200, MXL 270, MXL 340 are constructed and tested and complies with standard

EN 60974--7, in accordance with the requirements of directive (2005/95/EEC).

--------------------------------------------------------------------------------------------------------------------------------------

Kent Eimbrodt

Global Director Equipment and Automation

ESAB AB

695 81 LAXÅ

SWEDEN Tel: + 46 584 81000 Fax: + 46 584 411924

Laxå 2007--03--08

SAFETY PRECAUTIONS

Safety Precautions

Safety - English

WARNING: These Safety Precautions are

for your protection. They summarize pre-

cautionary information from the references

listed in Additional Safety Information sec-

tion. Before performing any installation or operating

procedures, be sure to read and follow the safety

precautions listed below as well as all other manuals,

material safety data sheets, labels, etc. Failure to observe

Safety Precautions can result in injury or death.

PROTECT YOURSELF AND OTHERS --

Some welding, cutting, and gouging

processes are noisy and require ear

protection. The arc, like the sun, emits

ultraviolet (UV) and other radiation

and can injure skin and eyes. Hot metal can cause

burns. Training in the proper use of the processes

and equipment is essential to prevent accidents.

Therefore:

1. Always wear safety glasses with side shields in any

work area, even if welding helmets, face shields, and

goggles are also required.

2. Use a face shield tted with the correct lter and

cover plates to protect your eyes, face, neck, and

ears from sparks and rays of the arc when operat-

ing or observing operations. Warn bystanders not

to watch the arc and not to expose themselves to

the rays of the electric-arc or hot metal.

3. Wear ameproof gauntlet type gloves, heavy long-

sleeve shirt, cuess trousers, high-topped shoes,

and a welding helmet or cap for hair protection, to

protect against arc rays and hot sparks or hot metal.

A ameproof apron may also be desirable as protec-

tion against radiated heat and sparks.

4. Hot sparks or metal can lodge in rolled up sleeves,

trouser cus, or pockets. Sleeves and collars should

be kept buttoned, and open pockets eliminated from

the front of clothing.

5. Protect other personnel from arc rays and hot

sparks with a suitable non-ammable partition or

curtains.

6. Use goggles over safety glasses when chipping slag

or grinding. Chipped slag may be hot and can y far.

Bystanders should also wear goggles over safety

glasses.

FIRES AND EXPLOSIONS -- Heat from

ames and arcs can start res. Hot

slag or sparks can also cause res and

explosions. Therefore:

1. Remove all combustible materials well away from

the work area or cover the materials with a protec-

tive non-ammable covering. Combustible materials

include wood, cloth, sawdust, liquid and gas fuels,

solvents, paints and coatings, paper, etc.

2. Hot sparks or hot metal can fall through cracks or

crevices in oors or wall openings and cause a hid-

den smoldering re or res on the oor below. Make

certain that such openings are protected from hot

sparks and metal.“

3. Do not weld, cut or perform other hot work until the

workpiece has been completely cleaned so that there

are no substances on the workpiece which might

produce ammable or toxic vapors. Do not do hot

work on closed containers. They may explode.

4. Have re extinguishing equipment handy for instant

use, such as a garden hose, water pail, sand bucket,

or portable re extinguisher. Be sure you are trained

in its use.

5. Do not use equipment beyond its ratings. For ex-

ample, overloaded welding cable can overheat and

create a re hazard.

6. After completing operations, inspect the work area

to make certain there are no hot sparks or hot metal

which could cause a later re. Use re watchers when

necessary.

7. For additional information, refer to NFPA Standard

51B, "Fire Prevention in Use of Cutting and Welding

Processes", available from the National Fire Protec-

tion Association, Batterymarch Park, Quincy, MA

02269.

ELECTRICAL SHOCK -- Contact with

live electrical parts and ground can

cause severe injury or death. DO NOT

use AC welding current in damp areas,

if movement is conned, or if there is

danger of falling.

SAFETY PRECAUTIONS

1. Be sure the power source frame (chassis) is con-

nected to the ground system of the input power.

2. Connect the workpiece to a good electrical

ground.

3. Connect the work cable to the workpiece. A poor

or missing connection can expose you or others

to a fatal shock.

4. Use well-maintained equipment. Replace worn or

damaged cables.

5. Keep everything dry, including clothing, work

area, cables, torch/electrode holder, and power

source.

6. Make sure that all parts of your body are insulated

from work and from ground.

7. Do not stand directly on metal or the earth while

working in tight quarters or a damp area; stand

on dry boards or an insulating platform and wear

rubber-soled shoes.

8. Put on dry, hole-free gloves before turning on the

power.

9. Turn o the power before removing your gloves.

10. Refer to ANSI/ASC Standard Z49.1 (listed on

next page) for specic grounding recommenda-

tions. Do not mistake the work lead for a ground

cable.

ELECTRIC AND MAGNETIC FIELDS

— May be dangerous. Electric cur-

rent owing through any conduc-

tor causes localized Electric and

Magnetic Fields (EMF). Welding and

cutting current creates EMF around welding cables

and welding machines. Therefore:

1. Welders having pacemakers should consult their

physician before welding. EMF may interfere with

some pacemakers.

2. Exposure to EMF may have other health eects which

are unknown.

3. Welders should use the following procedures to

minimize exposure to EMF:

A. Route the electrode and work cables together.

Secure them with tape when possible.

B. Never coil the torch or work cable around your

body.

C. Do not place your body between the torch and

work cables. Route cables on the same side of

your body.

D. Connect the work cable to the workpiece as close

as possible to the area being welded.

E. Keep welding power source and cables as far

away from your body as possible.

FUMES AND GASES -- Fumes and

gases, can cause discomfort or harm,

particularly in conned spaces. Do

not breathe fumes and gases. Shield-

ing gases can cause asphyxiation.

Therefore:

1. Always provide adequate ventilation in the work area

by natural or mechanical means. Do not weld, cut, or

gouge on materials such as galvanized steel, stain-

less steel, copper, zinc, lead, beryllium, or cadmium

unless positive mechanical ventilation is provided.

Do not breathe fumes from these materials.

2. Do not operate near degreasing and spraying opera-

tions. The heat or arc rays can react with chlorinated

hydrocarbon vapors to form phosgene, a highly

toxic gas, and other irritant gases.

3. If you develop momentary eye, nose, or throat ir-

ritation while operating, this is an indication that

ventilation is not adequate. Stop work and take

necessary steps to improve ventilation in the work

area. Do not continue to operate if physical discom-

fort persists.

4. Refer to ANSI/ASC Standard Z49.1 (see listing below)

for specic ventilation recommendations.

SAFETY PRECAUTIONS

5. WARNING: This product, when used for welding

or cutting, produces fumes or gases

which contain chemicals known to

the State of California to cause birth

defects and, in some cases, cancer.

(California Health & Safety Code

§25249.5 et seq.)

CYLINDER HANDLING -- Cylinders,

if mishandled, can rupture and vio-

lently release gas. Sudden rupture

of cylinder, valve, or relief device can

injure or kill. Therefore:

1. Use the proper gas for the process and use the

proper pressure reducing regulator designed to

operate from the compressed gas cylinder. Do not

use adaptors. Maintain hoses and ttings in good

condition. Follow manufacturer's operating instruc-

tions for mounting regulator to a compressed gas

cylinder.

2. Always secure cylinders in an upright position by

chain or strap to suitable hand trucks, undercar-

riages, benches, walls, post, or racks. Never secure

cylinders to work tables or xtures where they may

become part of an electrical circuit.

3. When not in use, keep cylinder valves closed. Have

valve protection cap in place if regulator is not con-

nected. Secure and move cylinders by using suitable

hand trucks. Avoid rough handling of cylinders.

4. Locate cylinders away from heat, sparks, and ames.

Never strike an arc on a cylinder.

5. For additional information, refer to CGA Standard P-1,

"Precautions for Safe Handling of Compressed Gases

in Cylinders", which is available from Compressed

Gas Association, 1235 Jeerson Davis Highway,

Arlington, VA 22202.

EQUIPMENT MAINTENANCE -- Faulty or

improperly maintained equipment can

cause injury or death. Therefore:

1. Always have qualied personnel perform the instal

lation, troubleshooting, and maintenance work.

Do not perform any electrical work unless you are

qualied to perform such work.

2. Before performing any maintenance work inside a

power source, disconnect the power source from

the incoming electrical power.

3. Maintain cables, grounding wire, connections, power

cord, and power supply in safe working order. Do

not operate any equipment in faulty condition.

4. Do not abuse any equipment or accessories. Keep

equipment away from heat sources such as furnaces,

wet conditions such as water puddles, oil or grease,

corrosive atmospheres and inclement weather.

5. Keep all safety devices and cabinet covers in position

and in good repair.

6. Use equipment only for its intended purpose. Do

not modify it in any manner.

ADDITIONAL SAFETY INFORMATION -- For

more information on safe practices for

electric arc welding and cutting equip-

ment, ask your supplier for a copy of

"Precautions and Safe Practices for Arc

Welding, Cutting and Gouging", Form

52-529.

The following publications, which are available from

the American Welding Society, 550 N.W. LeJuene Road,

Miami, FL 33126, are recommended to you:

1. ANSI/ASC Z49.1 - "Safety in Welding and Cutting"

2. AWS C5.1 - "Recommended Practices for Plasma Arc

Welding"

3. AWS C5.2 - "Recommended Practices for Plasma Arc

Cutting"

4. AWS C5.3 - "Recommended Practices for Air Carbon

Arc Gouging and Cutting"

SAFETY PRECAUTIONS

5. AWS C5.5 - "Recommended Practices for Gas Tung-

sten Arc Welding“

6. AWS C5.6 - "Recommended Practices for Gas Metal

Arc Welding"“

7. AWS SP - "Safe Practices" - Reprint, Welding Hand-

book.

8. ANSI/AWS F4.1, "Recommended Safe Practices for

Welding and Cutting of Containers That Have Held

Hazardous Substances."

MEANING OF SYMBOLS - As used

throughout this manual: Means Atten-

tion! Be Alert! Your safety is involved.

Means immediate hazards which,

if not avoided, will result in im-

mediate, serious personal injury

or loss of life.

Means potential hazards which

could result in personal injury or

loss of life.

Means hazards which could result

in minor personal injury.

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1.0 INTRODUCTION

The MIG / MAG welding torches of this series are exclusively intended for shielded- arc welding using

inert gas (MIG) or active gas (MAG) for industrial and commercial use by suitably trained employees. The

torches are only available in manual versions.

SECTION 1 INTRODUCTION

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SECTION 2 SHIPMENT AND PACKAGING

2.0 SHIPMENT AND PACKAGING

The components are carefully checked and packaged however damage may occur during shipping.

Checking procedure on receipt of goods

Check that the shipment is correct by referring to the shipping note.

In case of damage

Check the package and components for damage (visual inspection).

In case of complaints

If the package and/or components have been damaged during shipment:

Contact the last carrier immediately.

Keep the packaging (for possible inspection by the carrier or supplier, or for returning the goods).

Storage in an enclosed space

Ambient temperature

for shipment and storage: - 25 °C to + 55 °C

Relative air humidity: up to 90% at a temperature of 20 °C

•

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SECTION 3 TECHNICAL DATA

3.0 TECHNICAL DATA

-- 4 --

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Storage in an enclosed space

Ambient temperature

-- for shipment and storage: -- 25 qC to + 55 qC

Relative air humidity: up to 90% at a temperature of 20 qC

5 TECHNICAL DATA

Welding torch MXL 150v MXL 200 MXL 270 MXL 340

Type of cooling Air Air Air Air

Permitted load

at 20% intermittence *

Carbon dioxide CO

150 A

Mixed gas Ar/CO

150 A

Permitted load

at 35% intermittence *

Carbon dioxide CO

120 A 200 A 270 A 340 A

Mixed gas Ar/CO

120 A 170 A 260 A 320 A

Recommended gas flow 8 -- 15 l/min 10--18 l/min 10--18 l/min 10--20 l/min

Max pressure 2.5 bar

Wire diameter 0.6--0.8 mm 0.6--1.0 mm 0.8--1.2 mm 0.8--1.2 mm

Weight

2.5 m hose package

1.1 kg -- -- --

3.0 m hose package -- 1.6 kg 2.2 kg 2.6 kg

4.0 m hose package -- 2.0 kg 2.6 kg 3.7 kg

Cable assembly

Standard length

2.5 m 3.0 m / 4.0 m 3.0 m / 4.0 m 3.0 m / 4.0 m

Standard--control cable 2--pole 2--pole 2--pole 2--pole

* The capacity my be reduced up to 30% when pulse welding.

Duty cycle

The duty cycle refers to the time as a percentage of a ten--minute period that you can weld at a

certain current without overheating.

General torch data with reference to IEC/EN 60 974--7

Type of voltage: DC voltage

Wire type: Standard round wire

Voltage measurement: Peak value of 113V

Connection protection

Machine side (EN 60 529):

IP3X

Shielding gas: CO

or Ar/CO

SECTION 3 TECHNICAL DATA

SECTION 4 OPERATION

4.0 OPERATION

NOTE:

General safety regulations for the handling of the equipment can be found on

Page 5. Read them before you start using the equipment!

This product is intended for industrial use. In a domestic environment this product may

cause radio interference. It is the user's responsibility to take adequate precautions.

MXL welding torches can be used in any welding position.

The torch switch in the MXL handle is suitable for 42 V, maximum 1 A.

4.1 FITTING THE LINER

Fit the correct wire quide liner for the application, as needed to suit the wire type and diameter, see

Subsection 5.3.

NOTE:

For information on how to install new liners and about correct assembly procedure, see

Maintenance subsection.

Spiral liner = for steel wire

Teon liner = for aluminum, copper, nickel and stainless steel wires

4.2 ASSEMBLING THE SWAN NECK

The following gures indicate how to assemble the dierent welding torch types.

-- 5 --

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6 OPERATION

General safety regulations for the handling of the equipment can be foun d on

page 2. Read them before you start using the equipment!

WARNING!

This product is intended for industrial use. In a domestic environment this product may cause radio

interference. It is the user’s responsibility to take adequate precautions.

MXL welding torches can be used in any welding position.

The torch switch in the MXL handle is suitable for 42 V, maximum 1 A.

6.1 Fitting the liner

Fit the correct wire quide liner for the application, as needed to suit the wire typw and

diameter, see 7.3.

For information on how to install new liners and about correct assembly

procedure, see the chapter entitled “Maintenance”

Spiral liner = for steel wires

Teflon liner = for aluminium, copper, nickel and stainless steel wires

6.2 Assembling the swan neck

The following figures indicate how to assemble the different welding torch types.

MXL 150v

MXL 200

MXL 270

MXL 340

1. Gas nozzle 2. Contact tip 3. Nozzle spring 4. Tip adaptor 5. Gas diffusor

SECTION 4 OPERATION

4.0 OPERATION CON'T.

4.3 FITTING THE CENTRAL ADAPTOR ASSEMBLY TO THE EQUIPMENT

Check that the wire guide liner is tted correctly.

Insert the central plug into the socket on the wire feed unit and secure it by tightening the adaptor

nut rmly.

4.4 SETTING THE LEVEL OF SHIELDING GAS

Set the quantity of gas required on the gas regulator. The type and quantity of gas to be used depends

on the welding task to be performed.

4.5 CHECKLIST

Check the cable assembly before connecting it to the wire feed unit to conrm the wire liner is suit-

able for the wire diameter and type.

Check the xed end consumable parts on the swan neck, whether the correct contact tip etc. is be-

ing used for the wire diameter and type.

4.6 CHANGING WIRE

When changing the wire, ensure that the end of the wire is deburred.

Insert the wire into the wire feeding unit in accordance with the operating instructions.

When inserting the wire, press the wire jog button on the wire feed unit.

•

SECTION 5 MAINTENANCE

5.0 MAINTENANCE

Regular maintenance is important for safe, reliable operation.

Welding torch

Cleaning and replacement of the welding torch's wear parts should take place at regular intervals in

order to achieve trouble-free wire feed. Blow the wire guide clean regularly and clean the contact

tip.

Before carrying out cleaning, servicing and repair work, the following shutdown procedure must be fol-

lowed.

Switch o the power supply.

Close o the gas supply.

Make sure that the power supply and gas remain turned o all the time while servicing the ma-

chine.

5.1 CA

BLE ASSEMBLY

Check that all the nuts are tight.

Replace the liner if it is worn or dirty.

Replace damaged, deformed or worn parts.

5.2 CLEANING THE WIRE FEED

Disconnect the torch cable assembly from the equipment and lay it out straight.

Unscrew the nut and pull out the wire guide liner. Remove other parts from the swan neck.

Blow compressed air through the wire conduit from both ends in order to remove wire shavings.

Insert the liner into the wire conduit and screw the nut back on.

NOTE:

New liners must be cut to the correct length.

Please follow the following tips and suggestions.

•

SECTION 5 MAINTENANCE

5.3 SPIRAL LINER / PTFE LINER

Unscrew all the ttings from the swan neck.

Unscrew the union nut on the central plug.

Remove the old liner, and then push the guide spiral liner through the hose as far as it will go. Make

sure the cable is stretched out more or less straight.

Tighten the union nut by hand.

Cut the overhang o the spiral at the swan neck and remove the guide spiral liner again.

For a smooth transition to the contact tip, grind the end of the spiral to an angle of approximately

40°. Debur the cutting edge.

Push the sharpened guide spiral liner through the hose to the holder nipple.

Screw the union nut into position and tighten it using the multiple spanner.

Screw the ttings back on again.

5.0 MAINTENANCE CON'T.

-- 7 --

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7.2 Cleaning the wire feed

S Disconnect the torch cable assembly from the equipment and lay it out straight.

S Unscrew the nut and pull out the wire guide liner. Remove other parts from the

swan neck.

S Blow compressed air through the wire conduit from both ends in order to remove

wire shavings.

S Insert the liner into the wire conduit and screw the nut back on.

New liners must be cut to the correct length.

Please follow the following tips and suggestions:

7.3 Spiral liner / PTFE liner

1. Unscrew all the fittings from the swan neck.

2. Unscrew the union nut on the central plug.

3. Remove the old liner, and then push the guide spiral liner through the hose as

far as it will go.

Make sure the cable is stretched out more or less straight.

4. Tighten the union nut by hand.

5. Cut the overhang off the spiral at the swan neck and remove the guide spiral liner

again.

6. For a smooth transition to the contact tip, grind the end of the spiral to an angle

of approx. 40q. Deburr the cutting edge.

7. Push the sharpened guide spiral liner through the hose to the holder nipple.

8. Screw the union nut into position and tighten it using the multiple spanner.

9. Screw the fittings back on again.

5.4 CLEANING THE SWAN NECK

Clean the inside of the gas nozzle regularly to remove welding spatter and spray with Prest-O-Lite

anti-spatter agent.

Check the consumables for visible damage and replace if necessary.

•

SECTION 6 FAULT TRACING

-- 8 --

bg13d2e

7.4 Cleaning the swan neck

S Clean the inside of the gas nozzle regularly to remove welding spatter and spray

with ESAB



anti--spatter agent.

S Check the consumables for visible damage and replace if necessary.

8 FAULT--TRACING

If the measures described below are not successful, please consult your dealer or

the manufacturer.

Please also read the operating instruc tions for the welding components, e.g. power

source and wire feed u nit.

Problem Cause Solution

Torch becomes too hot S Contact tip / Collets not tight

enough

S Current connections on the

torch side and to the work piece

are loose

S Check and tighten

No switch function S Control line interrupted / faulty S Check / Repair

Wire burnt back onto

the contact tip

S Wrong parameter setting

S Worn contact tip

S Check or correct the setting

S Replace

Irregular wire feed S Liner blocked

S Contact tip and wire diameter

do not match one another

S Wrong tension set on the wire

feed unit

S Blow through in both directions

S Replace contact tip

S Correct according to

manufacturer’s instructions

Short arc between the

gas nozzle and the

work piece

S Spatter bridge between the

contact tip and the gas nozzle

S Clean and spray the inside of

the gas nozzle

Variable arc S Contact tip does not match the

wire diameter, or the contact tip

is worn

S Incorrect welding parameters

set

S Liner worn

S Check and replace the contact

tip

S Correct the welding parameters

S Replace the wire guide

Porous welds S Large amount of spatter in the

gas nozzle

S Insufficient or total lack of gas

shield

S Draught is disturbing the

shielding gas

S Clean the gas nozzle

S Check contents of the gas

bottle and the pressure setting

S Shield welding area with

protective screens

6.0 FAULT TRACING

If the measures described below are not successful, please consult your dealer or the manufacturer.

Please also read the operating instructions for the welding components, e.g. power source and wire

feed unit.

IN THE EVENT OF AN EMERGENCY, THE POWER SOURCE

MUST BE SWITCHED OFF IMMEDIATELY. FOR FURTHER

ACTION IN SUCH CIRCUMSTANCES, CONSULT THE

POWER SOURCE INSTRUCTION MANUAL.

CAUTION

SECTION 6 FAULT TRACING

SECTION 7 ORDERING OF SPARE PARTS

NOTE:

MXL 150v, MXL 200, MXL 270, MXL 340 is designed and tested in accordance with the in-

ternational and European standards IEC-/EN 60974-7. It is the obligation of the service

unit which has carried out the service or repair work to make sure that the product still

conforms to the said standard.

Spare parts may be ordered through your nearest Prest-O-Lite dealer, see the last page of this publica-

tion.

7.0 ORDERING OF SPARE PARTS

SECTION 7 ORDERING OF SPARE PARTS

7.0 ORDERING OF SPARE PARTS CON'T.

MXLt 150v, MXLt 200, MXLt 270, MXLt 340

Edition 070309

Ordering number

-- 10 --

bg13or

Ordering Number

Ordering no. Type Description Notes

0700 200 001 MXLt 150v Welding torch 2.5 m with fixed connection

0700 200 002 MXLt 200 Welding torch 3.0 m EURO Connection

0700 200 003 MXLt 200 Welding torch 4.0 m EURO Connection

0700 200 004 MXLt 270 Welding torch 3.0 m EURO Connection

0700 200 005 MXLt 270 Welding torch 4.0 m EURO Connection

0700 200 006 MXLt 340 Welding torch 3.0 m EURO Connection

0700 200 007 MXLt 340 Welding torch 4.0 m EURO Connection

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Prest-O-Lite 150v, 200, 270 and 340 MXL Torches User manual

Brand: Prest-O-Lite

Model: 150v, 200, 270 and 340 MXL Torches

Category: Welding System

Type: User manual

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