HUGONG POWERTIG 300DPIII User manual

1
POWERTIG 300DP
III
WARNING:
Read carefully and understand all ASSEMBLY
AND OPERATION INSTRUCTIONS before
operating. Failure to follow the safety rules and
other basic safety precautions may result in
serious personal injury.
2017VERSION
OWNER’S MANUAL
WELDING AND CUTTING TOTAL SOLUTION
WARNING:
Read carefully and understand all ASSEMBLY
AND OPERATION INSTRUCTIONS before
operating. Failure to follow the safety rules and
other basic safety precautions may result in
serious personal injury.

2
GENERAL SAFETY RULES
WARNING: Read and understand all instructions. Failure to follow all instructions listed below
may result in serious injury.
CAUTION: Do not allow persons to operate or assemble this POWERTIG 300DPIII welder
until they have read this manual and have developed a thorough understanding of how the
POWERTIG 300DPIII welder works.
WARNING: The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions or situations that could occur. It must be understood by the
operator that common sense and caution are factors which cannot be built into this product, but must be
supplied by the operator.
1.1 Your Welding Environment
-Keep the environment you will be welding in free from flammable materials.
-Always keep a fire extinguisher accessible to your welding environment.
-Always have a qualified person install and operate this equipment.
-Make sure the area is clean, dry and ventilated. Do not operate the welder in humid, wet or poorly
ventilated areas.
-Always have your welder maintained by a qualified technician in accordance with local, state and
national codes.
-Always be aware of your work environment. Be sure to keep other people, especially children, away
from you while welding.
-Keep harmful arc rays shielded from the view of others.
-Mount the welder on a secure bench or cart that will keep the welder secure and prevent it from tipping
over or falling.
1.2 Your Welder’s Condition
-Check ground cable, power cord and welding cable to be sure the insulation is not damaged. Always
replace or repair damaged components before using the welder.
-Check all components to ensure they are clean and in good operating condition before use.
1.3 Use of Your Welder
Do not operate the welder if the output cable, electrode, torch is wet. Do not immerse them in water.
These components and the welder must be completely dry before attempting to use them.
-Follow the instructions in this manual.
-Keep welder in the off position when not in use.
-Connect ground lead as close to the area being welded as possible to ensure a good ground.
-Do not allow any body part to come in contact with the welding wire if you are in contact with the
material being welded, ground or electrode from another welder.
-Do not weld if you are in an awkward position. Always have a secure stance while welding to prevent
accidents. Wear a safety harness if working above ground.

3
-Do not drape cables over or around your body.
-Wear a full coverage helmet with appropriate shade (see ANSI Z87.1 safety standard) and safety
glasses while welding.
-Wear proper gloves and protective clothing to prevent your skin from being exposed to hot metals, UV
and IR rays.
-Do not overuse or overheat your welder. Allow proper cooling time between duty cycles.
-Keep hands and fingers away from moving parts.
-Do not point torch at any body part of yourself or anyone else.
-Always use this welder in the rated duty cycle to prevent excessive heat and failure.
1.4 Specific Areas of Danger, Caution or Warning
Electrical Shock
Electric arc welders can produce a shock that can cause injury or death. Touching
electrically live parts can cause fatal shocks and severe burns. While welding, all metal
components connected to the wire are electrically hot. Poor ground connections are a hazard, so secure
the ground lead before welding.
-Wear dry protective apparel: coat, shirt, gloves and insulated footwear.
-Insulate yourself from the work piece.Avoid contacting the work piece or ground.
- Do not attempt to repair or maintain the welder while the power is on.
-Inspect all cables and cords for any exposed wire and replace immediately if found.
-Use only recommended replacement cables and cords.
-Always attach ground clamp to the work piece or work table as close to the weld area as possible.
-Do not touch the welding wire and the ground or grounded work piece at the same time.
-Do not use a welder to thaw frozen pipes.
Fumes and Gases
-Fumes emitted from the welding process displace clean air and can result in injury or death.
-Do not breathe in fumes emitted by the welding process. Make sure your breathing air is clean and safe.
-Work only in a well-ventilated area or use a ventilation device to remove welding fumes from the
environment where you will be working.
-Do not weld on coated materials (galvanized, cadmium plated or containing zinc, mercury or barium).
They will emit harmful fumes that are dangerous to breathe. If necessary use a ventilator, respirator with
air supply or remove the coating from the material in the weld area.
-The fumes emitted from some metals when heated are extremely toxic. Refer to the material safety data
sheet for the manufacturer’s instructions.
-Do not weld near materials that will emit toxic fumes when heated. Vapors from cleaners, sprays and
degreasers can be highly toxic when heated.
UV and IR Arc Rays
The welding arc produces ultraviolet (UV) and infrared (IR) rays that can cause injury to your
eyes and skin. Do not look at the welding arc without proper eye protection.
-Always use a helmet that covers your full face from the neck to top of head and to the back of each ear.
-Use a lens that meets ANSI standards and safety glasses. For welders under 160 Amps output, use a
shade 10 lens; for above 160 Amps, use a shade 12. Refer to the ANSI standard Z87.1 for more
information.

4
-Cover all bare skin areas exposed to the arc with protective clothing and shoes. Flame-retardant cloth
or leather shirts, coats, pants or coveralls are available for protection.
-Use screens or other barriers to protect other people from the arc rays emitted from your welding.
-Warn people in your welding area when you are going to strike an arc so they can protect themselves.
Fire Hazards
Do not weld on containers or pipes that contain or have had flammable, gaseous or liquid
combustibles in them. Welding creates sparks and heat that can ignite flammable and
explosive materials.
-Do not operate any electric arc welder in areas where flammable or explosive materials are present.
-Remove all flammable materials within 35 feet of the welding arc. If removal is not possible, tightly cover
them with fireproof covers.
-Take precautions to ensure that flying sparks do not cause fires or explosions in hidden areas, cracks or
areas you cannot see.
-Keep a fire extinguisher close in the case of fire.
-Wear garments that are oil-free with no pockets or cuffs that will collect sparks.
-Do not have on your person any items that are combustible, such as lighters or matches.
-Keep work lead connected as close to the weld area as possible to prevent any unknown, unintended
paths of electrical current from causing electrical shock and fire hazards.
-To prevent any unintended arcs, cut wire back to ¼" stick out after welding.
Hot Materials
Welded materials are hot and can cause severe burns if handled improperly.
-Do not touch welded materials with bare hands.
-Do not touch TIG gun nozzle after welding until it has had time to cool down.
Sparks/Flying Debris
Welding creates hot sparks that can cause injury. Chipping slag off welds creates flying debris.
-Wear protective apparel at all times: ANSI-approved safety glasses or shield, welder’s hat and ear plugs
to keep sparks out of ears and hair.
Electromagnetic Field
-Electromagnetic fields can interfere with various electrical and electronic devices such as
pacemakers.
-Consult your doctor before using any electric arc welder or cutting device
-Keep people with pacemakers away from your welding area when welding.
-Do not wrap cable around your body while welding.
-Wrap TIG gun and ground cable together whenever possible.
-Keep TIG gun and ground cables on the same side of your body.
Shielding Gas Cylinders Can Explode

5
High pressure cylinders can explode if damaged, so treat them carefully.
-Never expose cylinders to high heat, sparks, open flames, mechanical shocks or arcs.
-Do not touch cylinder with TIG gun.
-Do not weld on the cylinder
-Always secure cylinder upright to a cart or stationary object.
-Keep cylinders away from welding or electrical circuits.
-Use the proper regulators, gas hose and fittings for the specific application.
-Do not look into the valve when opening it.
-Use protective cylinder cap whenever possible
1.5 Proper Care, Maintenance and Repair
-Always have power disconnected when working on internal components.
- Do not touch or handle PC board without being properly grounded with a wrist strap. Put PC board in
static proof bag to move or ship.
-Do not put hands or fingers near moving parts such as drive rolls of fan
POWERTIG 300DPIII USE AND CARE
•Do not modify the POWERTIG 300DPIII in any way. Unauthorized modification may impair the
function and/or safety and could affect the life of the equipment. There are specific applications for
which the POWERTIG 300DPIII was designed.
•Always check of damaged or worn out parts before using the POWERTIG 300DPIII. Broken
parts will affect the POWERTIG 300DPIII operation. Replace or repair damaged or worn parts
immediately.
•Store idle POWERTIG 300DPIII. When POWERTIG 300DPIII is not in use, store it in a secure
place out of the reach of children. Inspect it for good working condition prior to storage and before
re-use.
Notice: * If the welder continues to work too long time, the Heat Protection Indicator on the panel
would be on, indicating that the inner temperature rise inside the welder had exceed the
designed permitted temperature. At this time, stop the welding work, wait until the welder cooled inside
and the Heat Protection Indicator turned off, then continue to work again;
* Cut off the power switch and Argon valve, before leaving the welding place temporarily or after the
welding worked finished;
* Welders should wear canvas work clothes and welding face shield to prevent arc light and heat
radiation;
* Put light-proof screen around the work area to prevent others influenced by the arc lights.
* Flammable, explosive items could not be put near the welding area;
* Every outlet of the welder should be connected and earthed correctly.
Notice: The cover protection degree of the POWERTIG 300DPIII inverter TIG welder is
IP21S.When the welder is operated, do not insert finger or round stick diameter less than 12.5mm
(especially metal stick) into the welder; Do not allow to press heavily onto the welder.

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TECHNICAL SPECIFICATION
TERM UNIT POWERTIG 300DPIII
Rated Input Voltage V 400
Power Frequency Hz 50/60
Rated Input Capacity KVA 12.8
Rated Input Current A 18.5
Output No Load Voltage V 68
Rated Working Voltage V 32V/MMA；22V/TIG
Welding Current A 10～300
Current Up Time S 0～15
Current Drop Time S 0～25
Pulse Frequency Hz 0.5～200
Pulse Width Adjustment % 15～85
Post Flow Time S 0～30
Rated Duty Cycle % 35
Cooling Type Air cooling
Effiency η≥ 85%
Power Factor Cosφ 0.93
Insulation Degree H
Cover Protection Degree IP IP21S
Weight kg 18
Dimension L×W×H mm 508*241*408
No special advice on above parameter. The nameplate parameter on the welder is prior.

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KNOW YOUR WELDER
Description
POWERTIG 300DPIII is a digitization model can be used for MMA、DCTIG and PULSE TIG, the
parameters can be preset and showed, welding current can real-time display, this is very easy operation.
1. Front panel
1. 1. Know the Front panel
1. Numerical displays and units lights of the panel
2. Welding mode choose and indicator
3. TIG pulse function indicator
4. Welding process control choose
5. Choose and adjustment of welding parameter
6. Save and load of parameters
7. Type of parameter indicator
8. Status indicator of welder
1.2. Numerical displays and units lights of the panel
Display of welding current when machine is working and preset
parameter, such as “Up slope”, ”Pulse Ratio”, when machine is
idle and meanwhile the related units lights is on.
1.3. Status indicator of welder
Machine on Heat protection Over or under-voltage
The state light of machine on is on when the machine is powered on.
1
2
3
4
6
7
8
5

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The state light of heat protection is on when the machine has over-heated. Let the machine on so that
the fan will cool the machine. Wait until the light goes off, and you can continue welding.
The state light for wrong voltage turns on if the mains voltage is too high or too low. Check the mains
voltage. The wrong voltage light will also turn on if there is a momentaneous over-voltage or
under-voltage in the mains supply.
1.4. Welding mode choose and indicator
Type of machine can be chosen among HFTIG, LIFTTIG and MMA by
press option keys with yellow arrow, at the same time the indicator of type
of machine light up.
Under TIG mode the Pulse Switch, Processing Selection and function of
parameters’ save and usable will be available.
1.5. MMA Welding
->1.Under mode stick welding, you can press button
Parameter Selection and choose Welding Current, Hot
Start and Arc Force. At same time the corresponding
parameters’ indicator light up.
->2.The previous chosen parameters can be adjusted by
turning coding knob, at the same time the current
parameters can be written on the digital panel.
Note: Adjustment of Hot Start is for hot arc current.
Adjustment ofArc Force is for percentage.
1.6. TIG Welding
1.6.1. Pulse Switch Under TIG mode, you can press buttons on the left icon to start and
cancel pulse function. When Pulse indicator lights up the pulse function
is available and when the indicator snobs out the pulse function is
unavailable. When the Pulse function is available, the Peak Current,
Base Current, Pulse Frequency and Pulse Ratio functions are available
and can be adjusted.
1.6.2. Operation Selection
Under TIG mode, you can press buttons on the left icon to choose 2T
or 4T. Under 4T mode, the Ignition Current, Up Slope, Down Slope and
Crater Current are available and can be adjusted. How to operate the
2T and 4T as following:

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I2
1 2 3 45 6
1. 2T Operation >1. Press down button of torch, valve starts work, enter
pre-flow stage.
>2. Setting time of pre-flow is end, machine output the setting
welding current.
>3. Release button of torch, machine stops work, but valve
keeps work, machine enter post flow stage.
>4. If post flow time is end, the valve stops work.
2. 4T Operation >1. Press down button of torch, valve works, machine enter
pre-flow stage.
>2. Setting time of pre-flow time is arrived, machine output
presetting ignition current.
>3. Release button of torch, machine goes up by setting up
slope time until up to setting current.
>4. Press down button of torch again, current goes down by
setting down slope time until up to the setting crater
current
>5. Release button of torch again, machine stops work, but the valve keeps work, machine enter post
flow stage
>6. Setting post flow time is end, the valve stops work.
1.6.3. Parameter Setting
Under TIG mode, you can press button
Parameter to choose parameters, the
choosing parameters and corresponding
units can be watched on digital and units
sign parts (under TIG mode parameters
that can be chosen and parameters of
corresponding units see below table). Then
you can adjust chosen parameters by
adjustment of coding knob (adjusting range
of every parameter can be referred in the
parts technical parameters).
1 Pre-flow Time (sec) 2 Ignition Current (A)
3 Up Slope Time (sec) 4 Welding Current (A)
5 Pulse Ratio (%) 6 Pulse Frequency (Hz)
7 Base Current (A) 8 Down Slope Time (sec)
9 Crater Current (A)
I 2
1 2 3 4

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1.6.4. Parameters save and load (only available under TIG mode)
1. Parameters saving:
> To active the functions of Storage and adjustment, you
should press the S/C button last for 2 or 3 seconds, and then
the numerical digital of channel become to twinkling.
> Click S/C button to choose storage function, at the same
time SAVE indicator lights up.
> Choose storage channel by press CH button, 0-9 channels
are available.
> pressing S/C button last for 2 or 3 seconds to confirm
saving, channel digital tube and indicator snub out at the same
time ( if do not press S/C button to confirm, 4seconds later the
operation automatic be canceled, digital tube and indicator
snub out at the same time).
2. Parameters loading:
> pressing S/C button last for 2 or 3 seconds, to active
loading and adjustment functions, channel digital tube twinkle.
> Click S/C button to choose loading function, at the same time LOAD indicator light up and parameters
of corresponding channels can be watched on panel. And you can lookup every parameter by button
Parameter Selection.
> Choose usable channel by press button CH, 0-9 channels can be chosen.
> Pressing button S/C last for 2 or 3 seconds to confirm loading, and the digital become to keeping light
up, and the parameter loading is success. (if do not press S/C button to confirm, 4seconds later the
operation automatic be canceled, digital tube and indicator snub out at the same time.)

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INSTALLATION
1.POWER REQUIREMENT - AC 3 phase 400V, 50/60 HZ with a 30 amp circuit breaker is required. DO
NOT OPERATE THIS UNIT if the ACTUAL power source voltage is less than 340 volts AC or greater
than 460 voltsAC.
•High voltage danger from power source! Consult a qualified electrician for proper installation
of receptacle. This welder must be grounded while in use to protect the operator from
electrical shock.
•Do not remove grounding prong or alter the plug in any way. Do not use any adapters
between the welder's power cord and the power source receptacle. Make sure the POWER
switch is OFF when connecting your welder's power cord to a properly grounded 380 VAC, 60
HZ, 3Phase, 30 Amp input power supply.
2. EXTENSION CORD - We do not recommend an extension cord because of the voltage drop they
produce. This drop in voltage can affect the performance of the welder. If you need to use an extension
cord, we recommend you check with a qualified electrician and your local electrical codes for your
specific area. Do not use an extension cord over 25 ft. in length.
3. MMA mode connection method
Note: As difference of electrode, cable connecting method may be exchanged!
4. TIG mode connection method

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5. Input connection method
EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND SKIN!
Prolonged exposure to the welding arc can cause blindness and burns. Never strike an arc or
begin welding until you are adequately protected. Wear flame-proof welding gloves, a heavy long
sleeved shirt, trousers without cuffs, high topped shoes, and an ANSI approved welding helmet.
OPERATION
High voltage danger from power source! Consult a qualified electrician for proper
installation of receptacle at the power source. This welder must be grounded while in use to
protect the operator from electrical shock. If you are not sure if your outlet is properly grounded,
have it checked by a qualified electrician. Do not cut off the grounding prong or alter the plug in
any way and do not use any adapter between the welder's power cord and the power source
receptacle. Make sure the POWER switch is OFF then connect your welder's power cord to a
properly grounded 380 VAC, 60 HZ, 3 phase, 50 amp power source.
1.Stick Welding Skill
1.1. Preparing the Joint
Before welding, the surface of work piece needs to be free of dirt, rust, scale, oil or paint or it will create
brittle and porous welds. If the base metal pieces to be joined are thick or heavy, it may be necessary to
bevel the edges with a metal grinder, the correct bevel should be around 60 degree. See following
picture:
Input power
Gas cylinder
Water Input

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Based on different welding position, there are different welding joint, see following images for more
information.
1.2. GROUND CLAMP CONNECTION
Clear any dirt, rust, scale, oil or paint on the ground clamp. Make certain you have a good solid ground
connection. A poor connection at the ground clamp will waste power and heat. Make sure the ground
clamp touches the metal.
1.3. ELECTRODE
The welding electrode is a rod coated with a layer of flux.When welding, electrical current flows between
the electrode (rod) and the grounded metal work piece. The intense heat of the arc between the rod and
the grounded metal melts the electrode and the flux. For best performance on this unit, we suggest the
use of 6013 electrodes.

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1.4. SELECTING THE PROPER ELECTRODE
There is no golden rule that determine the exact rod or heat setting required for every situation. The type
and thickness of metal and the position of the work piece determine the electrode type and the amount
of heat needed in the welding process. Heavier and thicker metals required more amperage. It is best to
practice your welds on scrap metal which matches the metal you intend to work with to determine correct
heat setting and electrode choice. See the following helpful trouble shooting tips to determine if you are
using a correct electrode.
1.4.1. When proper rod is used:
1.4.1.a. The bead will lay smoothly over the work without ragged edges
1.4.1.b. The base metal puddle will be as deep as the bead that rises above it
1.4.1.c. The welding operation will make a crackling sound similar to the sound of eggs frying
1.4.2. When a rod too small is used;
1.4.2. a. The bead will be high and irregular
1.4.2. b. The arc will be difficult to maintain
1.4.3. When the rod is too large
1.4.3. a. The arc will burn through light metals
1.4.3. b. The bead will undercut the work
1.4.3. c. The bead will be flat and porous
1.4.3. d. Rod may be freeze or stick to work piece
Note: Rate of travel over the work also affects the weld. To ensure proper penetration and enough
deposit of rod, the arc must be moved slowly and evenly along the weld seam.
1.5.SETTING THE AMPERAGE CONTROL
The welder has an infinite current control. It is capable of welding with electrodes up to 3/32” diameter.
There is no golden rule that determines the exact amperage required for every situation. It is best to
practice your welds on scrap metal which matches the metals you intend to work with to determine
correct setting for your job. The electrode type and the thickness of the work piece metal determine the
amount of heat needed in the welding process. Heavier and thicker metals require
more voltage (amperage), whereas lighter and thinner metals require less voltage (amperage). Consult
the welding electrode packaging for recommended welding amperage range.
1.6. WELDING TECHNIQUES
The best way to teach yourself how to weld is with short periods of practice at regular intervals. All
practice welds should be done on scrap metal that can be discarded. Do not attempt to make any repairs
on valuable equipment until you have satisfied yourself that your practice welds are of good appearance
and free of slag or gas inclusions.

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1.6.1. Holding the electrode
The best way to grip the electrode holder is the way that feels most comfortable to you. Position the
Electrode to the work piece when striking the initial arc it may be necessary to hold the electrode
perpendicular to the work piece. Once the arc is started the angle of the electrode in relation to the work
piece should be between 10 and 30 degrees. This will allow for good penetration, with minimal spatter.
1.6.2. Striking the arc
EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND SKIN! Prolonged
exposure to the welding arc can cause blindness and burns. Never strike an arc or begin welding
until you are adequately protected. Wear flame-proof welding gloves, a heavy long sleeved shirt,
trousers without cuffs, high topped shoes, and an ANSI approved welding helmet.
Scratch the work piece with the end of electrode to start arc and then raise it quickly about 1/8 inch gap
between the rod and the work piece, see following picture
It is important that the gap be maintained during the welding process and it should be neither too wide or
too narrow. If too narrow, the rod will stick to the work piece. If too wide, the arc will be extinguished. It
needs much practice to maintain the gap. The beginners may usually get sticker or arc extinguishing.
When the rod is stuck to the work piece, gently rock it back and forth to make them separate. If not, a
short circuit will occur and it will break the welder. A good arc is accompanied by a crisp, cracking sound.
The sound is similar to that made by eggs frying. To lay a weld bead, only 2 movements are required;
downward (as the electrode is consumed) and in the direction the weld is to be laid, as in following
figure:
1.6.3. Types of weld bead
The following paragraphs discuss the most commonly used arc welding beads.
The stringer bead Formed by traveling with the electrode in a straight line while keeping the electrode
centered over the weld joint.

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The weave bead Used when you want to deposit metal over a wider space than would be possible with a
stringer bead. It is made by weaving from side to side while moving with the electrode. It is best to
hesitate momentarily at each side before weaving back the other way.
1.6.4. Welding position
Flat position
It is easiest of the welding positions and is most commonly used. It is best if you can weld in
the flat position if at all possible as good results are easier to achieve.
The horizontal position
A. Weld speed is too fast.
B. Weld speed is too slow.
C. Arc is too long.
D. Ideal weld.
A solid weld bead requires that the electrode be moved slowly and steadily along the weld seam. Moving
the electrode rapidly or erratically will prevent proper fusion or create a lumpy, uneven bead.
it is performed very much the same as the flat weld except that the angle is
different such that the electrode, and therefore the arc force, is directed more toward the metal above the
weld joint. This more direct angle helps prevent the weld puddle from running downward while still
allowing slow enough travel speed to achieve good penetration. A good starting point for your electrode
angle is about 30 degrees DOWN from being perpendicular to the work piece.
1.6.5. Judge the good weld bead
When the trick of establishing and holding an arc has been learned, the next step is learning how to run
a good bead. The first attempts in practice will probably fall short of acceptable weld beads. Too long of
an arc will be held or the travel speed will vary from slow to fast (see following)
ELECTRIC SHOCK CAN KILL! To prevent ELECTRIC SHOCK, do not perform any welding while
standing, kneeling, or lying directly on the grounded workpiece.
Stringer Bead Weave Bead
Flat Position Horizontal Position

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1.6.6. Finish the bead
As the coating on the outside of the electrode burns off, it forms an envelope of protective gases around
the weld. This prevents air from reaching the molten metal and creating an undesirable chemical
reaction. The burning coating, however, forms slag. The slag formation appears as an accumulation of
dirty metal scale on the finished weld. Slag should be removed by using a chipping hammer.
PEENING THE SLAG FROM A WELD JOINT CUASES SMALL CHIPS OF METAL TO FLY
THROUGH THE AIR! Metallic chips flying through the air can cause eye injury or injury to other
parts of the head, hands or exposed portions of the body. Wear goggles or safety glasses with
side shields and protect the hands and other exposed parts of the body with protective garments,
or if possible, work with a shield between the body and the work piece.
The intense heat produced at the arc sets up strains in the metal joined by welding. Peening the weld not
only removes the scale left behind in the welding but relieves the internal strains developed by the
heating and cooling process.
2. TIG welding skill
Gas Tungsten Arc Welding (GTAW) or TIG (Tungsten Inert Gas) as it is commonly referred to, is a
welding process in which fusion is produced by an electric arc that is established between a single
tungsten (non-consumable) electrode and the work piece. Shielding is obtained from a welding grade
shielding gas or welding grade shielding gas mixture which is generally Argon based. A filler metal may
also be added manually in some circumstances depending on the welding application.

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Welding regulations parameter table (only for reference)
Tungsten Electrode Types
TIG Welding is generally regarded as a specialized process that requires operator competency. While
many of the principles outlined in the previous Arc Welding section are applicable a comprehensive
outline of the TIG Welding process is outside the scope of this Operating Manual.

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TROUBLESHOOTING
Serial Fault Analysis of fault Method of overcome fault
1 fan don’t
rotate
Fan is broken change fan
connecting cable
drop up (or break
off)
find where is cable break up
and connect it
2
no arc
high
frequenc
y
switch of torch is
broken
change switch of torch
main control
board was broken change main control board
connecting cable
drop up ( or break
off)
find where is cable break up
and connect it
3 no Argon
output
no Argon input
check flow meter and hose
and recovery to feed welder
air
main control
board was broken change main control board
electromagnetic
gas valve was
broken
change electromagnetic gas
valve
air path was
blocked
clean foreign body and
dredge air path
4
no
cooling
water
output
water pressure is
not enough
increase cooling water
pressure
water path was
blocked
clean foreign body and
dredge water path
5
protectio
n
indicator
light up
inner overheat when the inner temperature is
low recover normal
15% over/lack
pressure over
15% of power
supply
when voltage normal machine
will recovery
6 panel
knob do
potentiometer
was broken
change potentiometer

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not work main control
board was broken
change main control board
connecting cable
drop up ( or break
off)
find where is cable break up
and connect it
7
Ammeter
no
display
Ammeter was
broken
change Ammeter
connecting cable
drop up ( or break
off)
find where is cable break up
and connect it
main control
board was broken change main control board
8 arc is no
smooth
torch and
machine is fault
connected
check and correct by manual
Argon no pure use Argon with purity 99.99%
Tungsten
electrode is not
good or pinhead
is broken
change use correct tungsten
electrode
9 power
trip
first time power
on after long time
power was cut off
(over 2 days)
No fault, charge filter
capacitor of power main
circuit cause power trip,
switch on main power again.
10 others please contact with
manufacturer or supplier