PROPOINT 8619470 Le manuel du propriétaire

V1.0 8619470

Please read and understand all instructions before use. Retain this manual for future reference.

145A MULTI-PROCESS

MIG-ARC-TIG WELDER

USER MANU

AL

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

2 For technical questions call 1-800-665-8685

Specifications

SPECIFICATIONS

Input Voltage 115/230V AC

Input Current Rating 115V 16 to 21A

230V 16 to 27A

Phase Single

Output Current Range

10 to 145A

MIG (GMAW/FCAW) Welding Output @ 25% duty cycle 115V 30 to 80A

230V 30 to 145A

MIG Welding Voltage Range 15-1/2 to 21-1/2A

STICK (SMAW) Welding Output @ 25% duty cycle 115V 10 to 80A

230V 10 to 145A

TIG (GTAW) Welding Output @ 25% duty cycle

115V

10 to 80A

230V 10 to 145A

No-Load Voltage 53V

Welding Capacity 1/4 in.

Wire Feed Speed 60 to 630 in. per minute.

Welding Wire Diameter (MIG-ARC-TIG) 0.025/0.030/0.035 in.

Protection Class

IP21S

Compliance CAN/CSA

INTRODUCTION

The Pro.Point 145A Multi-Process MIG-ARC-TIG Welder incorporates the latest in IGBT technology

for maximum efficiency and longer duty cycles. The welding machine will provide 145 amps of MIG,

ARC and TIG output with dual voltage (115/230V). Settings are displayed on the digital LCD.

Choose manual or automatic control. Select the wire gauge and ARC/MIG/TIG with the

patented Smart-Set operation. The unit automatically adjusts the settings for optional welding.

For MIG/MAG welding, the user can choose gas or gasless options.

The welding unit has a Tweco euro style MIG Torch connection and the machine comes standard

with a Tweco 2 style torch. Inside are wire feeders with steel guide rollers for use with welding

wire. The unit includes both a hot start feature to boost electric arc ignition and an anti-stick

feature that cuts power to prevent overloads when the electrode sticks to the workpiece.

Compatible accessories include the MIG Welding Torch (SKU 8613002), the Multi-System TIG

Torch (SKU 8618456) and the 200A Spool Gun Kit (SKU 8612517).

SAFETY

WARNING! Read and understand all instructions before using this tool. The operator must follow

basic precautions to reduce the risk of personal injury and/or damage to the equipment.

Keep this manual for safety warnings, precautions, operating or inspection and maintenance

instructions.

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MIG-ARC-TIG WELDER

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HAZARD DEFINITIONS

Please familiarize yourself with the hazard notices found in this manual. A notice is an alert that

there is a possibility of property damage, injury or death if certain instructions are not followed.

DANGER! This notice indicates an immediate and specific hazard that will result in severe

personal injury or death if the proper precautions are not taken.

WARNING! This notice indicates a specific hazard or unsafe practice that could result in

severe personal injury or death if the proper precautions are not taken.

CAUTION! This notice indicates a potentially hazardous situation that may result in minor or

moderate injury if proper practices are not taken.

NOTICE! This notice indicates that a specific hazard or unsafe practice will result in

equipment or property damage, but not personal injury.

WORK AREA

1. Operate in a safe work environment. Keep your work area clean, well-lit and free of distractions.

2. Remove all unnecessary people from the work area when welding. Anyone remaining in the

work area must wear the appropriate welding safety equipment.

3. Store tools properly in a safe and dry location. Keep tools out of the reach of children.

4. Do not weld on damp surfaces that can transmit the electric current.

5. Do not install or use in the presence of flammable gases, dust or liquids.

6. Welding sparks and ejected molten slag can start a fire. Remove combustible materials

within 39 ft (12 metres) of the welding unit. See Fire and Explosion Precautions.

7. Have a fire extinguisher readily available (see Fire and Explosion Precautions).

8. Use protective screens or barriers to protect others from flash and glare; warn others in the

area to look away from the arc.

9. Keep the welding unit at least one foot from any wall or structure.

10. Check that the work area is free from fires, sparks or hot debris before leaving.

WARNING! Wear personal protective equipment approved by the Canadian Standards

Association (CSA) or American National Standards Institute (ANSI).

HEAD PROTECTION

DANGER! Never look directly at the welding arc without the proper protection. The light can

cause flash burn damage and impair vision. Although treatment is possible, multiple

occurrences can result in permanent eye damage.

1. Protect your eyes from welding light by wearing a welder's helmet fitted with a filter shade

suitable for the type of welding you are doing. The welding process produces intense white

light, infrared and ultraviolet light, these arc rays can burn both eyes and skin.

1.1. Consult the Welding Shade Guide in Appendix A for the minimum shade to protect the

eyes based on the amperage and type of welding.

2. An opaque helmet will protect against the ultraviolet or infrared light. A helmet will also

protect against ejected hot material and slag. The helmet should protect the face, forehead,

ears and neck.

3. Wear a fire-resistant head covering like a skullcap or balaclava hood to protect your head

when the faceplate is down or when using a welding hand-held face shield.

4. Wear ventilated safety goggles beneath the welding helmet or behind the hand-held face

shield. The cooling weld bead may fragment or eject slag that can damage the eyes, when

the helmet or hand-held face shield is not in place.

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

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4.1 Eye protection equipment should comply with CSA Z94.3-07 or ANSI Z87.1 standards

based on the type of work performed.

5. Wear fire resistant earplugs when welding overhead to prevent spatter or slag from falling

into ear.

PROTECTIVE CLOTHING

1. Wear a leather apron or jacket, leather welding gloves and full foot protection. Choose clothing

fabrics that resist sparks, heat, flames and splashes of molten material. Artificial fabrics may

burn and melt, resulting in a more severe injury.

1.1 Wear welding capes and sleeves when performing overhead welding.

2. Do not wear clothes or protective gear that are frayed, oily or greasy as they may ignite

from the heat or ejected slag and sparks.

3. Wear thick clothes that do not expose the skin. Ultraviolet or infrared light can burn skin

with sufficient exposure.

4. Do not wear clothing that can hold hot debris or sparks such as pant cuffs, shirt pockets or

boots. Choose clothing that has flaps over pockets or wear clothing to cover the openings such

as pant legs over the boots or an apron over the shirt.

5. Gloves shall should contain an insulating lining to protect against an electric shock.

6. Rubber soled footwear or electrically insulated work boots are recommended while

working with a welding unit. The non- skid sole is will also help maintain footing and

balance during work.

6.1 Select boots with steel toe protection to prevent injury from falling objects.

RESPIRATORS

1. Respiratory protection is needed when ventilation is not sufficient to remove welding fumes

or when there is risk of oxygen deficiency.

1.1. Wear a NIOSH approved respirator when working on materials that produce dust or

particulate matter.

2. Work in a confined space only if it is well ventilated or while wearing an air-supplied

respirator. Welding fumes and gases can displace air and lower the oxygen level causing

injury or death. Be sure the breathing air is safe (See Fumes and Gases).

3. The user can take the additional precaution of informing another person in the work area of

the potential danger, so that person can watch for indications that the user is suffering from

oxygen deprivation.

PERSONAL PRECAUTIONS

Control the tool, personal movement and the work environment to avoid personal injury or

damage to the tool.

1. Do not operate any tool when tired or under the influence of drugs, alcohol or medications.

2. Avoid wearing clothes or jewelry that can become entangled with the moving parts of a

tool. Keep long hair covered or bound.

3. Remove all jewelry or metal items from your person before welding. Metal items may

connect to the welding unit’s electrical circuit, causing an injury or death.

4. Do not overreach when operating the tool. Proper footing and balance enables better control

in unexpected situations.

5. Support the workpiece or clamp it to a stable platform. Holding the workpiece by hand or

against your body may lead to personal injury.

6. Do not wear any personal grooming products that are flammable, such as hair preparations,

perfume or cologne with an alcohol base.

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7. Remove any combustibles, such as butane lighters or matches, from your person before

doing any welding. Hot welding sparks may light the matches or ignite leaking lighter fuel.

SPECIFIC SAFETY PRECAUTIONS

WARNING! DO NOT let comfort or familiarity with product (gained from repeated use)

replace strict adherence to the tool safety rules. If you use this tool unsafely or incorrectly,

you can suffer serious personal injury.

Welding produces sparks, molten slag, intense white light, plus infrared and ultraviolet light. A

cooling bead can eject chips or fragments of slag. Any of these can cause direct harm to the

eyes and skin of the welder or bystanders.

1. Use the correct tool for the job. This tool was designed for a specific function. Do not

modify or alter this tool or use it for an unintended purpose.

2. Arc welding requires the use a hand-held face shield or helmets with full face protection per

CSA standard Z94.3.1.

3. Protect against reflected arc rays. The rays can reflect off a shiny surfaces behind the user,

into the helmet and off the filter lens into the eyes. Remove or cover any reflective surface

behind the user such as a glossy painted surface, aluminum, stainless steel or glass.

4. Welding produces sparks and molten slag. A cooling bead can eject chips or fragments of

slag. Any of these can cause direct harm to the eyes or skin of the user or bystanders.

5. Erect protective screens or barriers to protect bystanders from the flash and glare; warn

others in the area not to watch the arc. Do not strike a welding arc until all bystanders and

you (the user) have welding shields and/or helmets in place.

6. Immediately replace a cracked or broken helmet or a scratched or damaged lens filter to

avoid damage to the eyes or face from arc flash or ejected molten material.

7. Do not allow the welding stick to accidentally touch the ground clamp or grounded work. An

arc flash will result from contact and can injury the unprepared user and bystanders.

8. Do not handle hot metal or electrode stubs with bare hands. Handling may result in a burn injury.

9. Do not use the welding unit if personal movement is confined or if there is a danger of falling.

10. Keep all panels and covers securely in place when operating the welding unit.

11. Insulate the ground clamp when not connected to a workpiece to prevent contact with any

metal object.

12. Do not operate the welding unit if the torch, electrode holder, welding cable or ground

cable are wet. Do not immerse them in water. These components and the welding unit must

be completely dry before attempting to use them.

13. Never dip the electrode in water for cooling.

14. Remove the electrode from the holder when not in use.

15. Do not point the torch or electrode holder at any body part of yourself or at anyone else.

16. Do not use a welding unit to thaw frozen pipes.

17. Insulate yourself from the work and the ground using dry insulation. Make certain that the

insulation is large enough to cover your full area of physical contact.

18. Remove the electrode from the holder when not in use.

19. When not welding, make certain that no part of the electrode circuit is touching the workpiece

or the ground. Accidental contact can cause overheating and create a fire hazard.

20. Maintain good ventilation of the louvers on this equipment. Good ventilation is of critical

importance for the normal performance and service life of this equipment.

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

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21. When working above floor level, use a safety belt to protect yourself from a fall should you

get a shock.

22. The electrode, electrode reel, welding head, nozzle and semiautomatic welding guns are

electrically ‘hot’ when the welding unit is in semiautomatic or automatic wire welding mode.

23. When not welding, make certain that no part of the electrode circuit is touching the workpiece

or the ground. Accidental contact can cause overheating and create a fire hazard.

FIRE AND EXPLOSION PRECAUTIONS

Arc welding can produce sparks, hot slag or spatter, molten metal drops and hot metal parts

that can start fires.

1. Clear the floor and walls of an area of all combustible and/or flammable materials up to

39 ft (12 metres) away from the welding unit. Hot debris ejected during welding can land

at a considerable distance away. Solid floors of concrete or masonry is the preferred

working surface.

1.1 Cover any combustible material with fire resistant covers or shields, if it cannot be

removed. The covering must be tight and should not leave openings for sparks or

ejected slag to enter.

1.2. Check both sides of a panel or wall for combustible material. Remove the combustible

material before welding.

2. A combustible floor should be protected with a fire resistant covering. Alternatives are to

spray the floor with water to keep it wet for the duration of the welding or cover with damp

sand. Care must also be taken to avoid an electric shock when this is done. A combustible

floor directly laid onto concrete does not need to be sprayed with water.

3. Seal cracks and openings to adjacent areas that a spark or slag can enter. Seal any openings

found with a fire-resistant cover. Shut doors and windows that do not provide ventilation or

erect protective screens in front of them when possible.

4. Avoid welding near hydraulic lines or containers containing flammable contents.

5. Do not perform any welding work on containers that held flammable or toxic substance,

until they are cleaned by a person trained in removing toxic and flammable substances and

vapours per the American Welding Standard AWS F4.1.

6. Open a container before performing any welding work on it. The heat generated by the

welding process will cause the air and gases to expand. The internal pressure may cause a

sealed or closed container to rupture, possibly causing an injury or death.

7. Do not weld pipes or metal that are covered in combustible material or in contact with

combustible structure such as a wall. Only weld if the covering can be safely removed.

7.1 Follow all safety precautions and legal requirements before welding a workpiece that

contains Asbestos or attempting to remove the Asbestos covering. This requires expert

knowledge and equipment.

7.2 Molten slag can run down the inside and outside of a pipe and start a fire. Be aware

where the pipe terminates and take precautions.

8. Do not weld a panel that is a sandwich construction of combustible and metal materials.

9. Have a fire extinguisher available for immediate use. A dry chemical fire extinguisher for

Types A, B and C is suggested.

9.1 Welding a combustible metal like zinc, magnesium or titanium requires a Type D

fire extinguisher.

9.2 Do not use liquid based fire extinguishing methods near the electric arc welding unit, as

it may cause a shock hazard.

10. Ventilation systems should be positioned so sparks or molten slag isn’t carried to an

adjacent area.

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11. Have a Fire Watcher observing areas outside of the welder’s view, such as the opposite side

of a wall or behind the welder. A fire may also start on the other side of a structure that

could not be removed. The Fire Watcher will extinguish a fire or raise the alarm to evacuate

if the fire cannot be contained by the extinguishing equipment.

11.1 A fire watch extends at least 30 minutes after the welding is complete to ensure there

are no fires caused by smoldering sparks or ejected material.

FUMES AND GASES

WARNING! Stop welding and move to a location with ventilation if your eyes, nose or throat

become irritated. This indicates the ventilation is not adequate to remove the fumes. Do not

resume welding until the ventilation is improved and the discomfort ceases. Seek medical

attention if the symptoms do not diminish or if the welder experiences nausea, dizziness

or malaise.

Welding may produce hazardous fumes and gas during the welding process. A well ventilated

work area can normally remove the fumes and gases, but sometimes the welding produces

fumes and gases that are hazardous to your health.

1. Only work in a confined space if the area is well ventilated or while wearing a respirator or

an air-supplied respirator. Welding fumes and gases can displace air and lower the oxygen

level causing injury or death. Be sure the breathing air is safe. Always have a trained

watchperson nearby.

1.1 If ventilation in the work area is poor, use an approved air-supplied respirator. All the

people in the work area must also have air-supplied respirators.

1.2 Oxygen displacement can occur in confined areas when the shielding gas fills the area

and pushes out air.

1.2.1 Argon, Propane and Carbon Dioxide are heavier than air and will fill a confined

space from the bottom up.

1.2.2 Helium and natural gas are lighter than air and will fill a confined space from the

top down.

2. Avoid positions that allow welding fumes to reach your face. Always attempt to weld ‘upwind’

of the workpiece with the airflow across the face of the welder. Airflow from behind may create

a low pressure area in front of the welder and draw the fumes to the person.

3. Ventilate the work area to remove welding fumes and gases. The fumes and gases should

be drawn away from the user.

3.1 Ventilation should be enough to disperse fumes, but not enough to disturb the

shielding gas or flame during welding.

3.2 Ventilation exhaust shall be directed to a non-work area to avoid exposing other people

to potential toxic or dangerous fumes.

3.3 Air removed from the work area by the ventilation system must be replenished with fresh

air to avoid oxygen starvation or a build-up of fumes or gases. Only use air to provide

ventilation. Any other combination of gases may be explosive or toxic to people in the

work area.

3.4 Ventilation methods that remove gas and fumes from the welding point before they

reach the welder’s face should be given preference.

4. Avoid welding in a work area that has vapours from cleaning, degreasing or any spraying

operations. The heat and light from welding can react with the vapour and form irritating or

potentially toxic gases. Wait for the vapours to disperse.

5. Consult the manufacturer's Safety Data Sheets (SDS) for instructions and precautions

about metals, consumables, coatings, cleaners and degreasers.

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

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5.1 Do not weld on coated metals such as galvanized, lead or cadmium plated steel, unless

the coating is removed from the weld area. The coatings and any metals containing

these elements can give off toxic fumes during the welding process.

5.2 Do not weld, cut or heat lead, zinc, cadmium, mercury, beryllium or similar metals without

seeking professional advice and inspection of the welding area’s ventilation. These metals

produce extreme toxic fumes, which can cause discomfort, illness and death.

5.3 Do not weld or cut near chlorinated solvents or in areas that chlorinates solvents can

enter. The heat or ultraviolet light of the arc can separate chlorinated hydrocarbons into

a toxic gas (phosgene) that can poison or suffocate the user or bystanders.

6. Check the Safety Data Sheet for the proper handling and safety precautions for

consumable welding rods as the coating can have multiple chemicals.

COMPRESSED GAS CYLINDER PRECAUTIONS

WARNING! Improper handling or maintenance of compressed gas cylinders and regulators

can result in serious injury or death. Do not use a cylinder or its contents for anything other

than its intended use.

1. Only use inert or nonflammable gas with the welding unit such as Carbon Dioxide, Argon or

Helium with the welding unit.

1.1 Never use flammable gases. They will ignite and may result in an explosion or fire that can

cause death or injury.

2. Do not attempt to mix gases or refill a gas cylinder. Exchange a cylinder or have it refilled by a

professional service.

3. Do not deface or alter the name, number or other markings on a cylinder. Do not rely on a

cylinder’s colour to identify the contents. Do not connect a regulator to a cylinder that contains

a gas that the regulator was not designed to handle.

4. Do not expose a cylinder to excessive heat, sparks, slag, flame or any other heat source.

4.1 A cylinder exposed to temperatures above 130 °F will require water spray cooling.

This method may not be compatible with electric welding units due to the hazard

of electrocution.

5. Do not expose a cylinder to electricity of any kind.

6. Do not attempt to lubricate a regulator. Always change a cylinder carefully to prevent leaks

and damage to the cylinder’s walls, valve or safety devices.

7. Gases in the cylinder are under pressure. Protect the cylinder from bumps, falls, falling

objects and harsh weather. A punctured cylinder under pressure can become a lethal

projectile. If a cylinder is punctured, do not approach until all pressure is released.

7.1 Protect the valve and regulator. Damage to either can result in regulator’s explosive

ejection from the cylinder.

8. Always secure a gas cylinder in a vertical position to a welding cart or other fixed support

with a steel chain, so it cannot be knocked over.

8.1 Away from areas where they may be struck or subjected to physical damage.

8.2 A safe distance from arc welding or cutting operations and any other source of heat,

sparks or flame.

8.3 Do not use as an improvised support or roller.

9. Always place the cylinder cap securely on the cylinder unless it is in use or being serviced.

10. Do not use a wrench or hammer to open a cylinder valve that cannot be opened by hand.

Notify your supplier for instructions.

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11. Do not modify or exchange gas cylinder fittings.

12. Close the cylinder valve and immediately remove the faulty regulator from service for

repair, if any of the following conditions exist:

12.1 Gas leaks externally.

12.2 Delivery pressure continues to rise with the downstream valve closed.

12.3 The gauge pointer does not move off the stop pin when pressurized or fails to return

to the stop pin after pressure is released.

13. Do not attempt to make regulator repairs. Send faulty regulators to the manufacturer's

designated repair center.

14. Do not weld on the gas cylinder.

15. Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.

16. Compressed gas cylinders must not be located in a confined space with the person welding

to prevent the possibility of leaks displacing the oxygen.

ELECTRICAL SAFETY

1. Do not come into physical contact with the welding current circuit. The welding current

circuit includes:

1.1 The workpiece or any conductive material in contact with it.

1.2 The ground clamp.

1.3 The electrode or welding wire;

1.4 Any metal parts on the electrode holder or wire feed torch.

1.5 The output terminals.

2. Insulate yourself from the electrical current and ground using electrical insulating mats or

covers big enough to prevent physical contact with the workpiece or ground.

3. Connect the ground clamp as close to the welding area on the workpiece as practical to

prevent welding current from traveling along an unexpected path and causing an electric

shock or fire hazard.

3.1 An option is to attach the ground clamp to a bare metal spot on a metal workbench.

The circuit will complete as long as the workpiece is also in full contact with the bare

metal workbench.

4. Do not weld on damp surfaces that can transmit the electric current without taking

precautions for the welder and bystanders. The electrode, welding head and nozzle are

electrically ‘hot’.

5. Only use insulated connectors to join welding cables.

6. Ensure there are no contacts between the workpiece and work area that would allow it to

ground, other than through the ground cable circuit

7. Do not exceed the duty cycle or amperage required for the type of welding. Excessive

amperage can cause the deterioration of protective insulation and create a shock hazard.

8. Unplug the welding unit when not in use as the unit as current is still entering the unit, even

when it is turned off.

9. Frequently inspect input power cable for wear and tear, replace the cable immediately if

damaged. Bare wiring is dangerous and can kill.

10. Do not use damaged, under sized or badly joined cables.

11. Do not disconnect the power cord in place of using the ON/OFF switch on the tool. This will

prevent an accidental startup when the power cord is plugged into the power supply.

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

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11.1 In the event of a power failure, turn off the machine as soon as the power is interrupted.

The possibility of accidental injury could occur, if the power returns and the unit is not

switched off.

12. Make certain the power source conforms to requirements of your equipment

(see Specifications).

POWER TOOL PRECAUTIONS

This equipment requires a dedicated 115/230 volt, 30 amp single-phase alternating current

circuit equipped with a similarly rated circuit breaker or slow blow fuse. Do not run other

appliances, lights, tools or equipment on the circuit while operating this welding unit.

1. Do not drape or carry coiled welding cables on your body while the cables are plugged into

the welding unit.

2. Do not start the tool when the electrode is touching the workpiece.

3. Hold the tool by the insulated gripping surfaces when performing an operation where it

may contact hidden wiring or its own cord and cables. Contact with a ‘live’ wire will

electrify exposed metal parts and shock the operator.

4. Take work breaks to prevent the tool's motor from overheating and/or overloading. Refer to

the welding unit’s duty cycle in Specifications.

5. Keep hands away from the electrode and the area it is being applied to when the tool is in

operation.

6. Do not connect the welding unit ground clamp to an electrical conduit. Do not weld on an

electrical conduit.

7. Do not touch the electrode or welded surface immediately after use. The surface will be hot

and may cause an injury.

8. Never use a tool with a cracked or worn electrode. Change the electrode before using and

discard the damaged one.

9. Remove the electrode from the holder when not in use.

POWER CORD

1. Insert the power cord plug directly to the power supply whenever possible. Extension cords

are not recommended for use with this welding unit.

1.1 When an extension cord is required, use a welding version that exceeds the welding

unit’s maximum power requirement.

2. Do not operate this tool if the power cord is frayed or damaged, as an electric shock or

surge may occur, resulting in personal injury or property damage.

2.1 Inspect the tool's power cord for cracks, fraying or other faults in the insulation or plug

before each use.

2.2 Discontinue use if a power cord feels more than comfortably warm while operating the

tool.

3. Keep all connections dry and off the ground to reduce the risk of electric shock. Do not

touch plug with wet hands.

4. Prevent damage to the power cord by observing the following:

4.1 Do not pull on the cord to disconnect the plug from an outlet.

4.2 Keep cord away from heat, oil, sharp edges or moving parts.

4.3 Place the electrical cord in a position that prevents it from contacting the tool or workpiece.

The cord should always stay behind the tool.

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5. Make sure to locate the cord so that it is not stepped on, tripped over or otherwise subject

to damage or stress.

6. Do not wrap the cord around the tool, as sharp edges may cut insulation or cause cracks if

wound too tight. Gently coil cord and either hang on a hook or fasten with a device to keep

cord together during storage.

ELECTROMAGNETIC FIELDS

WARNING! Stop welding immediately and move away from the welding unit if you feel faint,

dizzy, nausea or shocks. Seek medical attention.

Electromagnetic Fields (EMF) can interfere with electronic devices such as pacemakers.

Anyone with a pacemaker should consult with their doctor before working with or near an arc

welding unit. The following steps can minimize the effects of electromagnetic fields.

1. Twist or tape cables together and prevent coils.

2. Do not drape cables on your body.

3. Keep the welding power source and cables as far away from the user as practical. A

minimum of 24 in. is recommended.

4. Connect the workpiece clamp as close to the weld as possible, but lay the electrode and

workpiece cables away from the user.

5. Use the lowest current setting possible during welding.

6. Avoid long and regular bursts of energy while welding. Apply the electrode in short strokes

and intermittently. This will prevent the pacemaker from interpreting the signal as a rapid

heartbeat.

7. Do not allow the electrode to touch the metal while welding.

8. Keep the lead cable and ground cables on the same side of your body.

9. Do not weld while carrying the welding power source.

10. Do not work next to, sit or lean on the welding power source.

UNPACKING

WARNING! Do not operate the tool if any part is missing. Replace the missing part before

operating. Failure to do so could result in a malfunction and personal injury.

Remove the parts and accessories from the packaging and inspect for damage. Make sure that

all items in the parts list are included.

Contents:

• 145 Multi-Process MIG-ARC-TIG Welding Unit

• Ground Lead and ARC Lead Set

• 2 V-Groove Drive Rollers, 0.6 to 0.8 mm and 0.8 to 1.0 mm

• MIG To rc h

• 115V/230V Adapter

• Regulator

The compatible MIG Welding Torch (SKU 8613002), Multi-System TIG Torch (SKU 8618456) and

200A Spool Gun Kit (SKU 8612517) are sold separately.

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

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IDENTIFICATION KEY

A Digital Volts Meter

B Digital Amps Meter

C 2T/4T Selector Button

D Wire Speed / Amps Adjustment Knob

E Voltage / Downslope /ARC Force

Adjustment Knob

F Welding Mode / Smart-Set Selector Knob

G Negative Output Terminal (-)

H Euro MIG / TIG Torch Connector

(MIG/MAG)

I Positive Output Terminal (+)

J Dinse Connector

K Power Switch

L Gas Inlet

M Fan

N Input Power Cable

O Data Plate

P Spool Gun/Standard Selector Switch

Q Inch Wire Feed Button

R Gas Check Button

S Spool Holder Assembly

T Wire Feed Assembly

ASSEMBLY & INSTALLATION

Letter references in parenthesis (A) refer to the included Identification Key. Dashed numbers in

parenthesis (Fig. 1-1) refer to specific point of an illustration or image

INPUT VOLTAGE

TYPE

INPUT

RATED CURRENT

OUTPUT

DUTY CYCLE

X

I2

U2

ARC

115V-20A 21.4A 10A/20.4V～80A/23.2V

25%

80A

23.2V

60%

52A

22.1.V

100%

40A

21.6

230V 27A 10A/20.4V～145A/25.8V

25%

145A

25.8V

60%

93.6A

23.7V

100%

72.5A

22.9V

MIG

115V-15A 21.4A 30A/15.5V～80A/18V

25%

80A

18V

60%

52A

16.6V

100%

40A

16V

230V 22.4A 30A/15.5V～145A/21.2V

25%

145A

21.2V

60%

93.6A

18.7V

100%

72.5A

17.6V

TIG

115V 16.5A 10A/10.4V～80A/13.2V

25%

80A

13.2V

60%

52A

12.1V

100%

40A

11.6V

230V 16.5A 10A/10.4V～145A/15.8V

25%

145A

15.8V

60%

93.6A

13.7V

100%

72.5A

12.9V

X = Duty cycle Percentage

I2 = Welding Current

U2 = Secondary Voltage with Welding Current I2

Fig. 1

Fig. 2

Fig. 3

Tabl e 1

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TORCH POLARITY

Placement of the dinse connector (J) determines the torch’s polarity.

Straight Polarity or Torch Negative (-). Insert the dinse connector into the negative output

terminal (G). The torch has negative polarity in this configuration.

Reverse Polarity or Torch Positive (+). Insert the dinse connector into the positive output

terminal (I). The torch has positive polarity in this configuration.

INSTALLATION SET UP FOR ARC (STICK) WELDING

Please install the machine strictly according to the following steps.

POWER REQUIREMENTS

The power cord supplied with this welding unit is designed to handle the maximum power

required (see Specifications). Refer to the welding unit’s data plate and ensure the power

supply can meet those requirements.

CONNECTING THE POWER LEADS

1. Connection of Output Cables - An

electrode may require either a positive or

a negative charge for optimum results.

Connect the electrode holder to the

Positive Outlet Socket (I) or Negative

Outlet Socket (G) based on the electrode

manufacturer’s information for the correct

polarity set up.

Figure 4 represents the default

configuration for ARC with the ground

lead connected to the negative lead

(Fig. 4-1) and the electrode holder

connected to the positive lead (Fig. 4-2).

The dinse connector remains unplugged.

2. Turn the power source on and select the

ARC function with the welding mode knob

(Fig. 4-3).

3. Set the welding current relevant to the

electrode type and size, as recommended

by the electrode manufacturer (Fig. 5)

4. Place the electrode into the electrode holder and clamp tight (Fig. 6).

INSTALLATION & OPERATION FOR MIG WITH GAS

1. Connect the MIG Torch to the Euro connector (H)

and tighten the connector (Fig. 7-1).

2. Connect the ground lead to negative output socket

(G) (Fig. 7-2).

3. Connect the dinse connector (J) to positive outlet

socket (I) (Fig. 7-3).

4. Install the welding wire if needed (See Wire

Installation and Setup).

5. Open the valve on the gas cylinder and set the flow

to 21 CFH (Fig. 7-4).

7-4

7-2

7-1

7-5

7-7

7-3

7-6

Fig. 7

Fig. 4

4-3

4-1

4-2

Fig. 5

Fig. 6

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

14 For technical questions call 1-800-665-8685

6. Turn the power source on and select the MIG function with the welding mode knob. An

alternative is to use the Smart-Set option (see Smart-Set) (Fig. 7-6).

7. Set torch operation 2T / 4T (Fig. 7-5).

• 2T - Press and hold the trigger to start the arc. Release the trigger to stop.

• 4T - Press and release the trigger to start the arc. Press and release the trigger to stop

the arc.

The burnback function is automatic and preset for both selections.

8. Set the welding parameters using the wire feed (D) and voltage control knobs (E). These

will already be set if Smart-Set was selected (Fig. 7-7).

INSTALLATION & OPERATION FOR GASLESS MIG

1. Connect the MIG Torch to the Euro connector (H) and tighten the connector.

2. Connect the ground lead to the positive output socket (I) (Fig. 7-3).

3. Connect the dinse connector to the negative outlet socket (G) (Fig. 7-2).

4. Install flux-cored welding wire and the knurled drive roller (see Wire Installation and Setup).

5. Turn the power source on and select the MIG function with the welding mode knob.

6. Set torch operation 2T / 4T.

• 2T - Press and hold the trigger to start the arc. Release the trigger to stop.

• 4T - Press and release the trigger to start the arc. Press and release the trigger to stop

the arc.

The burnback function is automatic and preset for both selections.

7. Set the welding parameters using the wire feed (D) and voltage control knobs (E). These

will already be set if Smart-Set was selected.

INSTALLATION AND SET UP FOR DC TIG WELDING

The set up described is for DC Electrode Positive (DCEP).

1. Connect the TIG torch to the Euro connection socket and tighten the connection (Fig. 8-4).

2. Connect ground lead to the negative outlet

socket (Fig. 8-3).

3. Connect the dinse connector (J) to positive

output socket (G) (Fig. 8-5).

4. Turn the power source on and select the

TIG function with the welding mode knob

(Fig. 8-7).

5. Set torch operation to 2T or 4T (Fig. 8-6).

• 2T - Press and hold the trigger to start

the gas and arc. Release the trigger to

stop.

• 4T - Press and release the trigger to

start the gas and arc. Press and release

the trigger to stop the gas and arc.

6. Connect the gas hose to the regulator then

connect the regulator to the gas cylinder (Fig. 8-1). Connect the other end of the gas hose

(Fig. 8-2) to the gas inlet (L) on the rear of the welding machine. Check for gas leaks.

Fig. 8

8-1

8-2

8-3

8-4

8-5

8-6

8-7

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CHECK FOR GAS LEAKAGE

Check for gas leakage after each time the welding unit is set up for TIG welding and at

regular intervals.

The recommended procedure is as follows:

1. Connect the regulator and gas hose assembly and then tighten all connectors and clamps.

2. Slowly open the cylinder valve.

3. Set the flow rate on the regulator to approximately 15 to 25 CFH.

4. Close the cylinder valve and pay attention to the needle indicator on the regulator’s

pressure gauge. If the needle drops away towards zero, there is a gas leak.

Sometimes a gas leak can be slow and difficult to identify. Leave the gas pressure in the

regulator and line for an extended time. Perform the test as above, but reduce the flow rate

to 16 to 21 CFH. Close the cylinder valve and check after a minimum of 15 minutes.

5. After confirming there is a loss of gas, check all connectors and clamps for leakage by

brushing or spraying with soapy water. Bubbles will appear at the leakage point.

6. Tighten clamps or fittings to eliminate gas leakage. Replace the clamps and fittings if this

fails to solve the problem.

WIRE INSTALLATION AND SET UP

The correct installation of the wire spool and the wire into the wire feed unit is critical to

achieving an even and consistent wire feed. Poor set up of the wire into the wire feeder is a

major cause of fault with MIG welding machines. The guide below will assist in the correct setup

of your wire feeder.

1. Remove the spool retaining nut (Fig. 9). The spool retaining nut is left hand threaded.

2. Note the tension spring adjuster (Fig. 10-1) and spool locating pin (Fig. 10-2).

3. Fit the wire spool onto the

spool holder. Fit the

locating pin into the

location hole on the spool

(Fig. 11). Replace the spool

retaining nut tightly.

4. Choose a drive roller based

on the thickness of the

welding wire. Unscrew the

knob holding the drive

roller in place and exchange the drive rollers. Replace knob and tighten.

4.1 Flux-Cored – Install a knurled drive roller. Apply a light amount of pressure to the drive

roller. Too much pressure will crush the cored wire.

4.2 Aluminum - Install a U-groove drive roller.

5. Snip the wire carefully, be sure to hold the

wire to prevent the spool uncoiling. Carefully

feed the wire into the inlet guide tube of the

wire feed unit (Fig. 12).

6. Feed the wire through the drive roller and

into the outlet guide tube of the wire feeder

(Fig. 13-1). Note that the pressure roller in this

welding machine is smooth, not geared as in

the picture.

Fig. 9

Fig. 10

Fig. 11

10-2

10-1

Fig. 12

Fig. 13

13-1

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

16 For technical questions call 1-800-665-8685

7. Lock down the top pressure roller (Fig. 14-1)

and apply a medium amount of pressure us-

ing the tension adjustment knob (Fig. 14-2).

8. Check that the wire passes through the center

of the outlet guide tube without touching the

sides (Fig. 15-1). Loosen the locking screw

(Fig. 15-2) and then loosen the outlet guide

tube retaining nut (Fig. 15-3) to make

adjustment if required. Carefully retighten the

locking nut and screw to hold the new position.

9. Remove the gas nozzle and contact tip from

the torch neck (Fig. 16)

10. Press and hold the inch button (Q) to feed

the wire through to the torch neck. Release

the inch button when the wire exits the torch

neck (Fig. 17).

11. Fit the correct sized contact tip and feed the

wire through it, screw the contact tip into

the tip holder of the torch head. Clip the

wire close to the tip (Fig. 18) unless testing

the drive tension in step 12.

11.1 Fit an aluminum contact tip of the

correct size and diameter when using

aluminum welding wire.

12. Fit the gas nozzle to the torch head (Fig. 19).

13. A simple check for the correct drive tension is

to bend the end of the wire over hold it about

4 in. from your hand and let it run into your

hand, it should coil round in your hand

without stopping and slipping at the drive

rollers, increase the tension if it slips (Fig. 20).

14. Insufficient tension on the wire spool can allow it

to spin after the wire feeding mechanism stops,

forcing loops of wire off the spool to become

tangled. Increase the pressure on the tension spring inside the spool holder assembly by adjusting

the tension screw if this happens (Fig. 21).

WIRE FEED ROLLER SELECTION

This welding machine includes two V-groove drive rollers.

The importance of smooth, consistent wire feeding during MIG welding cannot be emphasized

enough. The smoother the wire feed, the better the weld.

Feed rollers, also called drive rollers, feed the wire mechanically along the length of the welding gun.

Feed rollers are designed for

certain types of welding wire

and they have different types of

grooves machined in them to

accommodate the different

types of wire. The wire (Fig. 22-1)

is held in the groove by the top

roller of the wire drive unit and is

referred to as the pressure roller

V-Groove

U-Groove

Knurled-Groove

Fig. 22

22-1

22-2

Fig. 18

Fig. 19

Fig. 14

Fig. 15

15-3

15-2

14-2

14-1

15-1

Fig. 16

Fig. 17

Fig. 20

Fig. 21

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(Fig. 22-2). Pressure is applied by a tension arm, which can be adjusted to increase or decrease the

pressure as required. The type of wire will determine how much pressure may be applied and what

type of drive roller is best suited to obtain optimum wire feed.

V-Shaped Groove - Solid hard wire, like steel or stainless steel, require a drive roller with a V-shape

groove for optimum grip and drive capability. Solid wires can have more tension applied to the wire

from the top pressure roller that holds the wire in the groove and the V shape groove is more

suited for this. Solid wires are more forgiving to feed due to their higher cross sectional column

strength. They are stiffer and do not easily bend.

U Shaped Groove - Soft wire, like Aluminum, requires a U-shape groove. Aluminum wire has

less column strength, can bend easily and is therefore more difficult to feed. Soft wires can

easily buckle at the wire feeder where the wire enters the torch’s inlet guide tube. The

U-shaped roller offers more surface area grip and traction to help feed the softer wire. Softer

wire also requires less tension from the top pressure roller to avoid deforming the wire’s shape.

Too much tension will push the wire out of shape and cause it to catch in the contact tip.

Knurled Drive Roller - Flux core/gasless wire is made of a thin metal sheath that has fluxing and

metal compounds layered onto it, which is then rolled into a cylinder to form the finished wire. The

wire cannot take too much pressure from the top roller, as it can be crushed and deformed. A

knurled drive roller was developed with small serrations in the groove. The serrations grip the wire

and assist to drive it without too much pressure from the top roller. The down side of using a

knurled wire feed roller with flux cored wire is it will slowly eat away at the surface of the welding

wire over time. These small bits eventually dislodge and go down into the liner. This will clog the

liner and the added friction will lead to welding wire feed problems.

A U-groove wire can also be used for flux core wire without the wire particles coming of the

wire surface. However, it is considered that the knurled roller will give a more positive feed of

flux core wire without any deformation of the wire shape.

OPERATION

FEATURES

THERMAL OVERLOAD PROTECTION

Constantly exceeding the duty cycle can damage the welding unit. An internal thermal protector

will open when the duty cycle is exceeded, shutting OFF all functions except the cooling fan. Leave

the welding unit turned ON with the fan running. The thermal protector will automatically reset and

the welding unit will function normally again once it has cooled.

Wait at least another 10 minutes after the thermal protector opens before resuming welding.

Starting before this additional time may result in a shortened duty cycle.

OVER-VOLTAGE

This equipment has an automatic voltage compensation function, which enables the unit to

maintain the voltage within the given range. In case that the input voltage or amperage exceeds

the stipulated value, it is possible to damage the equipment’s components. Please ensure your

primary power supply is correct (See Specifications).

DOWNSLOPE SETTING

Downslope is the gradual reduction of power to the electrical arc at the end of the welding

process. The power reduction allows the metal to cool more slowly and avoid a brittle weld or

stress cracks.

Downslope begins after releasing the torch trigger to shut off the welding arc. Power reduces

over a preselected time of 1 to 10 seconds (E). At the end of the selected duration, both the arc

and gas are stopped. The crater fill operation is automatic to factory-preset level.

IMPORTANT! This feature is only recommended for welding jobs that exceed 70 amps.

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

18 For technical questions call 1-800-665-8685

BURNBACK SETTING

Burnback is a feature that continues to supply power to the welding wire after the torch trigger

is release, but stops the welding wire from feeding. This provides time for the welder to remove

the welding wire from the weld pool before it solidifies. The setting is preset by the factory.

SMART-SET

Smart-Set uses pre-defined welding settings based on the type of Gas (Co2 or an Argon/Co2

mixture) and the wire diameter (0.030 or 0.035 in.). Turn the knob (F) to the selected pairing

and Smart-Set will configure the remaining parameters for optimal welding. You can begin

welding immediately.

WIRE FEED ON DEMAND

The welding unit has a feed-on-demand system to prevent wire waste. Initially the wire is slowly

fed through the torch, regardless of the set speed. Once an arc is struck, the unit feeds the wire

at the user’s selected speed.

ARC (MANUAL METAL ARC) WELDING

One of the most common

types of arc welding is manual

metal arc welding (MMA) or

stick welding. An electric

current is used to strike an arc

between the base material

and a consumable electrode

rod or ‘stick’. The electrode

rod is made of a material that

is compatible with the base

material being welded and is covered with a flux that gives

off gaseous vapours that serve as a

shielding gas and providing a layer of slag, both of which protect the weld area

from

atmospheric contamination. The electrode core itself acts as filler material the residue from

the flux that forms a

slag covering over the weld metal must be chipped away after welding.

1. Strike the electrode on the workpiece to create the arc and hold the electrode steady to

maintain the arc (Fig. 24)

2. The heat of the arc melts the surface of the base metal to form a molten pool

at the end

of the electrode.

3. The melted electrode metal is transferred across the arc into the molten pool

and

becomes the deposited weld metal.

4.

The deposit is covered and protected by a slag, which comes from the

electrode

coating.

5.

The arc and immediate area are enveloped by an

atmosphere of

protective gas.

6. Hold the electrode slightly above the workpiece to

maintain the arc while travelling at an even speed

to create an even weld deposition (Fig. 25)

7. To finish the weld, break the arc by quickly

snapping the electrode away from the workpiece

(Fig. 26).

8. Wait for the weld to cool and carefully chip away the

slag to reveal the weld metal underneath (Fig. 27).

Manual metal arc (stick) electrodes have a solid

metal wire core and a flux

coating. These electrodes

Fig. 24

Fig. 25

Fig. 26

Fig. 27

Fig. 23

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are identified by the wire diameter and by a series of letters and numbers. The letters and

numbers identify the metal

alloy and the intended use of the electrode.

The metal wire core works as a conductor of the current that maintains the arc.

The core wire

melts and is deposited into the welding pool.

The covering on a shielded metal arc welding electrode is called flux.

The flux on the

electrode performs many different functions:

• producing a protective gas around the weld area.

• providing fluxing elements and deoxidizers.

• creating a protective slag coating over the weld as it cools.

• establishing arc characteristics.

• adding alloying elements.

Covered electrodes serve many purposes in addition to adding filler metal to

the molten

pool. These additional functions are provided mainly by the

covering on the electrode.

ARC (STICK) WELDING FUNDAMENTALS

ELECTRODE SELECTION

As a general rule, the selection of an electrode is straight forward, in that it is only a matter of

selecting an electrode of similar composition to the parent metal. However, for some metals there

is a choice of several electrodes, each of which has particular properties to suit specific classes of

work. It is recommend to consult your welding supplier for the correct selection of electrode.

ELECTRODE SIZE

The size of the electrode generally depends on the thickness of the section being welded and

the thicker the section the larger the electrode required. The table gives the maximum size of

electrodes that may be used for various thicknesses of section based on using a general-

purpose type 6013 electrode (See Table 2).

WELDING CURRENT (AMPERAGE)

Correct current selection for a

particular job is an important

factor in arc welding. With the

current set too low, difficulty

is experienced in striking and

maintaining a stable arc. The

electrode tends to stick to the

work, penetration is poor and

beads with a distinct rounded profile will be deposited. Too high current is accompanied by

overheating of the electrode resulting undercut and burning through of the base metal and

producing excessive spatter. Normal current for a particular job may be considered as the

maximum, which can be used without burning through the work, over-heating the electrode or

producing a rough spattered surface. The table shows current ranges generally recommended for

a general-purpose type 6013 electrode (see Table 2).

ARC LENGTH

To strike the arc, the electrode should be gently scraped on the work until the arc is established.

There is a simple rule for the proper arc length; it should be the shortest arc that gives a good

surface to the weld. An arc too long reduces penetration, produces spatter and gives a rough

surface finish to the weld.

An excessively short arc will cause sticking of the electrode and result in poor quality welds.

General rule of thumb for down hand welding is to have an arc length no greater than the

diameter of the core wire.

Tabl e 2

AVERAGE THICKNESS

OF

MATERIAL

MAXIMUM RECOMMENDED

ELECTRODE DIAMETER

CURRENT RANGE

(AMPS)

0.03 to 0.07 in.

0.09 in.

60 to 100A

0.07 to 0.19 in. 0.12 in. 100 to 130A

0.19 to 0.31 in.

0.15 in.

130 to 165A

0.31 in. greater 0.19 in. 165 to 260A

8619470 145A MULTI-PROCESS MIG-ARC-TIG WELDER V1.0

20 For technical questions call 1-800-665-8685

ELECTRODE ANGLE

The angle that the electrode makes with the work is important to ensure a smooth, even transfer of

metal. When welding in down hand, fillet, horizontal or overhead the angle of the electrode is

generally between 5 and 15 degrees towards the direction of travel. When vertical up welding the

angle of the electrode should be between 80 and 90 degrees to the workpiece.

TRAVEL SPEED

The electrode should be moved along in the direction of the joint being welded at a speed that will

give the size of run required. At the same time, the electrode is fed downwards to keep the correct arc

length at all times. Excessive travel speeds lead to poor fusion, lack of penetration etc., while too slow a

rate of travel will frequently lead to arc instability, slag inclusions and poor mechanical properties.

MATERIAL AND JOINT PREPARATION

The material to be welded should be clean and free of any moisture, paint, oil, grease, mill scale,

rust or any other material that will hinder the arc and contaminate the weld material. Joint

preparation will depend on the method used include sawing, punching, shearing, machining,

flame cutting and others. In all cases, edges should be clean and free of any contaminates. The

type of joint will be determined by the chosen application.

MIG (METAL INERT GAS) WELDING

MIG (metal inert gas) welding, also known as GMAW (gas metal arc welding) or MAG (metal

active gas welding), is a semi-automatic or automatic arc welding process in which a

continuous and consumable wire electrode and a shielding gas are fed through a welding gun.

A constant voltage, direct current power source is most commonly used with MIG welding.

SHORT-CIRCUIT TRANSFER

Short-circuit transfer is the most common used method. The wire electrode is fed continuously

down the welding torch until it exits from the contact tip. The wire touches the workpiece and

causes a short-circuit. The wire heats up and begins to form a molten bead. The bead separates

from the end of the wire and forms a droplet that is transferred into the weld pool. This process

is repeated about 100 times per second, making the arc appear constant to the human eye.

1. The wire approaches the workpiece and touches the work creating a short-circuit between

the wire and the base metal, because there is no space between the wire and the base

metal there is no arc and current flows through the wire (Fig. 28)

2. The wire cannot support all the current flow, resistance builds up and the wire becomes hot

and weak and begins to melt

(Fig. 29)

3. The current flow creates a

magnetic field that begins to

pinch the melting wire forming

it into droplet (Fig. 30).

4. The pinch causes the forming

droplet to separate and fall

to-wards the now creating

weld pool (Fig. 31).

5. An arc is created at the

separation of the droplet and

the heat and force of the arc

flattens out the droplet into

the weld pool. The heat of the

arc melts the end of the wire

slightly as it feeds towards the

base metal (Fig. 32).

Fig. 31

Fig. 32

Fig. 33

Fig. 28

Fig. 29

Fig. 30

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