PROPOINT 9085986 User manual

V1.0 9085986
Please read and understand all instructions before use. Retain this manual for future reference.
TIG/ARC WELDER

AC/DC INVERTER

9085986 AC/DC Inverter TIG/Arc Welder V1.0
2 For technical questions call 1-800-665-8685
SPECIFICATIONS
Skill Level
Medium
Input Voltage
115/230V
Phase
Single
Power Factor
0.7φ
Input Power
6.9 kVA
Input current Ieff
ARC
7A
TIG
18A
Input current Imax
ARC
31A
TIG
30A
Duty Cycle
ARC/Stick
30% @ 160A
TIG
25% @ 200A
Max. Amperage Draw
31A
Output Current
200A
Current Range
5 to 200A
Output
5 to 200 @ 230V
5 to 125 @ 115V
No-Load Voltage (TIG/ARC)
64V
Generator Compatible
Yes
Metal Type
All
Mild Steel Weld Thickness Range
Alloy: 1/4 in., Steel: 3/16 in.
Welding Gas Required
Argon
Electrode Type
All
Electrode Size
4 mm (3/16 in.)
Dimensions
15 x 8 x 20 in.
Protection Category
IP 21S
Insulation Grade
B
Operating Temperature
-10 to 40°C (14 to 104°F)
Storage Temperature
-25 to 55°C (-13 to 131°F)
Weight
15 kg (33 lb)

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INTRODUCTION
The TIG/ARC welder is an inverter-based welding machine that incorporates the
latest in IGBT technology. The DC MMA (ARC) welding machine is capable of
delivering a smooth and incredibly stable arc, allowing easy welding with
electrodes and producing high quality welds that includes cast iron and stainless
steel.
The TIG torch allows quality DC TIG welding on steel and stainless steel. The
HF ignition system delivers a perfect arc ignition every time without any sticking
and a remarkably smooth stable arc that produces high quality TIG welds.
The welding machine incorporates a voltage reduction device to reduce the
open-circuit voltage to 7 volts.
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.
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.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
4 For technical questions call 1-800-665-8685
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 install or use in the presence of flammable gases, dust or liquids.
5. Welding sparks and ejected molten slag can start a fire. Remove
combustible materials within 39 ft (12 metres) of the welding machine.
See Fire and Explosion Precautions.
6. Have a fire extinguisher readily available (see Fire and Explosion
Precautions).
7. Use protective screens or barriers to protect others from flash and glare;
warn others in the area to look away from the arc.
8. Keep the welding machine at least one foot from any wall or structure.
9. Check that the work area is free from fires, sparks or hot debris before
leaving.
PERSONAL SAFETY
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 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.

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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 skull cap 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.
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 ear plugs when welding overhead to prevent spatter
or slag from falling into ears.
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 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 machine. The non- skid sole
will also help maintain footing and balance during work.
6.1 Select boots with steel toe protection to prevent injury from falling
objects.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
6 For technical questions call 1-800-665-8685
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 machine’s electrical circuit,
causing an injury or death.
4. Do not overreach when operating the tool. Proper footing and balance
enable 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.
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.

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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 surface
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 machine 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
machine.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
8 For technical questions call 1-800-665-8685
11. Insulate the ground clamp when not connected to a workpiece to
prevent contact with any metal object.
12. Do not operate the welding machine if the electrode holder or welding
cable is wet. Do not immerse them in water. These components and the
welding machine must be completely dry before attempting to use them.
13. Do not point the electrode holder at any body part of yourself or at
anyone else.
14. Do not use a welding machine to thaw frozen pipes.
15. 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.
16. Never dip the electrode in water for cooling.
17. Remove the electrode from the holder when not in use.
18. 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.
19. 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.
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 machine. 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.

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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 machine, 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.
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

9085986 AC/DC Inverter TIG/Arc Welder V1.0
10 For technical questions call 1-800-665-8685
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.

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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.
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 machine, such as
Carbon Dioxide, Argon or Helium with the welding machine.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
12 For technical questions call 1-800-665-8685
1.1 Never use flammable gases, as 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 machines 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.
11. Do not modify or exchange gas cylinder fittings.

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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.
1.4 Any metal parts on the electrode holder.
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.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
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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 machine 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.
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, 36 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 machine.
1. Do not drape or carry coiled welding cables on your body when the
cables are plugged into the welding machine.
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 machine’s duty cycle in Specifications.

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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 machine 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 machine.
Use a welding extension cord designed to exceed the welding machine’s
maximum power requirements when an extension cord is required.
2. Do not operate this tool if the power cord is frayed, damaged or poorly
spliced, as an electric shock may occur, resulting in personal injury or
property damage.
3. Discontinue use if a power cord feels more than comfortably warm while
operating the tool.
4. Keep all connections dry and off the ground to reduce the risk of electric
shock. Do not touch the plug or wiring with wet hands.
5. Prevent damage to the power cord by observing the following:
a. Place the power cord in a position that prevents it from coming into
contact with the tool or getting caught by the workpiece. The cord
should always stay behind the tool.
b. Do not pull on the cord to disconnect the plug from an outlet.
c. Keep the cord away from heat, oil, sharp edges or moving parts.
6. Do not allow people, mobile equipment or vehicles to pass over unprotected
power cords. Position power cords away from high traffic areas.
a. Place cords in reinforced conduits or place planks on either side of
the power cord to create a protective trench.
7. 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.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
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ELECTROMAGNETIC FIELDS
WARNING! Stop welding immediately and move away from the
welding machine 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 machine. 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. Wrap the Arc lead cable and ground cable together whenever possible.
9. Keep the Arc lead cable and ground cables on the same side of
your body.
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:
• Welding Machine • Torch • Regulator
• Arc Lead Set • Adaptor

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IDENTIFICATION KEY
A Control Panel
B Positive Outlet Socket – To connect the earth clamp in TIG mode or the
electrode holder in ARC/STICK mode.
C Negative Output Socket – To connect the TIG torch or earth clamp in
ARC/STICK mode .
D Gas Outlet – Used to connect the gas fitting/hose of the TIG torch.
E Remote Control Socket – 5-pin connector to attach a foot pedal or other
remote-control device.
F Power Supply Cord – The power cord supplied with this welding machine is
designed to handle the maximum power required (see Specifications). Refer
to the welding machine’s data plate for the Input voltage, IMAX and IEFF
requirements and ensure the power supply can meet those requirements.
G Gas Inlet – The gas supply hose connects to this inlet.
H On/Off Switch
Fig. 1

V1.0 9085986
Please read and understand all instructions before use. Retain this manual for future reference.
I Digital Display Meter – Displays current before and during welding,
other parameter settings and error message codes.
J Voltage Output Type – Select either DC or AC output voltage when in
Stick or TIG welding modes.
K Remote Control – Switch current control from the control panel to a
remote device, such as a foot pedal.
L Pulse On/Off Selection Switch - Activate or deactivate TIG pulse.
M Welding Process and 2T/4T Selection Switch – Select either MMA or TIG
welding. Initial TIG setting is 2T. Switch to MMA and back to TIG again to
select 4T. See TIG Torch Trigger Modes in Operations.
N Gas Pre-Flow – A range of 0 to 10 seconds of gas flow before the torch is
ready for welding. This will purge impurities from the gas line.
O Pulse Frequency – Set the pulse frequency (pulses per second) when in
the pulse welding mode. Adjustment range is 1 ~ 200 Hz.
P Background Amps – Set the background current from 10 to 100% during
pulse mode only. The current will drop from the set amperage down to
the chosen percentage each pulse cycle.
Q Gas Post-Flow – Set the gas to flow from 0 to 20 seconds after the weld arc
is extinguished to protect the weld zone from contamination while cooling.
Fig. 2

V1.0 AC/DC Inverter TIG/Arc Welder 9085986
Visit www.princessauto.com for more information 19
R AMPS – Set the current between 10 to 200A (peak current when in pulse
mode).
S AC Frequency – Set the AC frequency range between 20 to 250 Hz.
T AC Balance – Set the ratio of positive to negative time during the AC
wave cycle from 1 to 10. The positive part of the AC cycle removes
refractory oxide from the workpiece material’s surface, improving the
weld. Higher numbers removes more oxide, but also increases the heat
level of the tungsten.
U Downslope Timer – Set the time duration from 0 to 10 seconds for the
power to fall once the welding has ended. Longer durations will help
eliminate crates and pin holes in the weld.
OPERATION
THERMAL OVERLOAD PROTECTION
Constantly exceeding the duty cycle can damage the cutting unit. An internal
thermal protector will open when the duty cycle is exceeded, shutting OFF all
cutting unit functions except the cooling fan. Leave the cutting unit turned
ON with the fan running. The thermal protector will automatically reset and
the cutting unit will function normally again once it has cooled.
Wait at least another 10 minutes after the thermal protector opens before
resuming cutting. 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 thevoltage within the given range. In case that
the input voltage or amperage exceedsthe stipulated value, it is possible to
damage the equipment’s components. Pleaseensure your primary power
supply is correct (See Specifications).
POLARITY
Placement of the dinse connector determines the torch’s polarity.
Direct Current Electrode Negative (DCEN)
Insert the dinse connector into the negative output socket (C). The torch or
electrode has negative polarity in this configuration. Connect the earth clamp
to the positive output socket (B).
DCEN welding imparts more heat into the workpiece, creating a deeper
molten pool for easier penetration. It is suitable for thicker workpieces.

9085986 AC/DC Inverter TIG/Arc Welder V1.0
20 For technical questions call 1-800-665-8685
Direct Current Electrode Positive (DCEP) or Alternating Current (AC)
Insert the dinse connector into the positive output socket (B). The torch or
electrode has positive polarity in this configuration. Connect the earth clamp
to the negative output socket (C).
DCEP welding imparts more heat into the electrode. The molten pool is
shallower and material penetration is more difficult. This is suitable for
thinner workpieces.
AC welding imparts the same amount of heat into the workpiece and
electrode.
REMOTE CONTROL
The remote-control socket (E) has a 5-pin connector for a foot pedal.
Set the maximum
output amperage on
the panel, the
connect the foot
pedal to the socket.
Switch the output
control from panel to
remote (K). The foot
pedal will now control
the welding functions. The TIG T4 function is not available with the foot
pedal.
Pressing down on the foot pedal will activate the arc and increase the amperage
up to the pre-set limit. Adjusting the pressure on the foot pedal will increase or
decrease the amperage.
Releasing the foot pedal will trigger the amperage downslope duration and
post-gas flow. Power will then stop flowing to the TIG electrode.
REMOTE SOCKET CONFIGURATION
Pin #
Description
1
Torch Switch
2
Torch Switch
3
Potentiometer (min)
4
Potentiometer wiper
5
Potentiometer (max)
Table 1
Table 1