Svarog PROTIG -PIII Series User manual

www.hugong.com11111
3
PROTIG -PIII SERIES
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.
OWNER’S MANUAL
WELDING AND CUTTING TOTAL SOLUTION

CATALOGUE
GENERAL SAFETY RULES
WELDING MACHINE INTRODUCTION
TECHMICAL SPECIFICATION
FUNCTION DESCRIPTION
CURRENT ADJUST DESCRIPTION
OPERATION METHOD
TROUBLE SHOOTING
SPARE PARTS LIST
CIRCUIT CHART
COMPLETE SET SPECIFICATION
TRANSPORT & STORAGE

1
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 PROTIG PIII SERIES until
they have read this manual and have developed a thorough understanding of how the PROTIG
PIII SERIES 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.
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY CONSIDERATIONS
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.

2
1.3 Use of Your Welder
Do not operate the welder if the output cable, electrode, torch, wire or wire feed system 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 agoodground.
-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.
-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 and stay away from the drive rolls.
-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.

3
-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.
-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 MIG 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.

4
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 MIG gun and ground cable together whenever possible.
-Keep MIG gun and ground cables on the same side of your body.
Shielding Gas Cylinders Can Explode
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 MIG 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
PROTIG PIII SERIES USE AND CARE
Do not modify the PROTIG PIII SERIES 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 PROTIG PIII SERIES was designed.
Always check of damaged or worn out parts before using the PROTIG PIII SERIES. Broken
parts will affect the PROTIG PIII SERIES operation. Replace or repair damaged or worn parts
immediately.
Store idle PROTIG PIII SERIES. When PROTIG PIII SERIES 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.

5
WELDING MACHINE INTRODUCTION
PROTIG-PIII SERIES Digital Inverter DC welding machine is the use of an inert gas (argon) as
a protective medium arc, the use of a high melting point of the metal tungsten or tungsten oxide as an
electrode, the workpiece as the other electrode, using high pressure high frequency or high-voltage
pulse to advance into the inert gas ionization weld region, and between the tungsten electrode and the
workpiece to ignite arc welding molten metal so as to achieve an effect of welding equipment. Its rapid
power fluctuations can give good compensation, for a variety of welding processes can quickly and
accurately control, so smooth and soft welding, small splash, weld easily controlled. In welding low
carbon steel, stainless steel, high-strength steel and alloy steel and other materials can obtain
high-quality welds.
Characteristics of welding machines are:
TIG welding process does not melt, the arc is relatively stable, easy to control weld quality.
can be filled wire, the wire can not fill, both suitable for welding sheet metal, also suitable for welding
thicker plate.
concentrated heat from the arc when welding sheet metal deformation of the workpiece is
significantly less than arc welding and hand.
suitable for all position welding.
particularly suitable for welding thin 3mm or less, less than 1mm thick sheet can also be satisfied with
the quality of welding.
gentle arc, arc focus on good, fillet welds easily, but also for reliable positioning welding.
EMC Category: A category;
PROTIG-PIII SERIES Digital Inverter DC welding machine uses advanced digital control technology,
the use of international advanced IGBT (insulated gate bipolar transistor) power module as a converter
device, combined with specially developed digital control circuit high sothatthewholeofconsistency
and reliability, fast dynamic response, stable arc characteristics. This series welding machine has: DC
welding, DC MMA, and many other functions, it can basically meet the requirements of various welding
processes. It is widely used in pressure vessels, construction, shipbuilding, petrochemical and other
sectors of production and maintenance.
PROTIG PIII Series Digital Inverter DC welding machine has the following characteristics:
fully retained ZX7 welder function, to buy a welder equal PROTIG PIII series has two different
products.
All welding parameters can be accurately preset users to quickly set up to facilitate the welding
parameters needed.
functional, TIG has a 2-step, 4-step, spot and intermittent welding functions; remote control function
is automatically identified.
PROTIG PIII Series welding specifications: PROTIG 315PIII，PROTIG 400III, PROTIG 500PIII.
The content of this specification has corrupted, or welding feature
changes, this specification is subject to change without notice.

6
TECHMICAL SPECIFICATION
Environmental condition
* The surrounding temperature range
* when working：-10~+40℃；During transport or in storage:-20~+55℃
* Relative humidity：when at 40℃：≤50%；when at 20℃：≤90%。
* Dust, acid , corrosive gas or matter in the air less than normal content
Besides matter is produced in welding process. Place is not drastic motion.
* Altitude less than 1000m
* Keep from raining when it is used outdoor.
Power supply requirement
* Service voltage waveform should be actual sine wave, frequency jitter is less than±1% of rated value.
* Fluctuation of service voltage is less than±10% of rated value.
* Unbalance rate of 3ph service voltage≤5%
PROTIG PIII Series Digital Inverter DC welding machine adopts the international advanced IGBT
(insulated gate bipolar transistor) and fast recovery diode as a major power and the transfer of power
conversion devices that can precisely control the arc, combined with pre-ventilation, lag breathe and
non-contact high-frequency arc, to ensure the establishment of an easy and stable arc burning, plus
the protection feature allows the welder reliable quality.
Welder obtained through the air switch SW1 3 ~ XXXV frequency alternating current, the three-phase
rectifier bridge rectifier BR1, the capacitors C5, C6 filter into DC via IGBT (TR1, TR2) bridge inverter
consisting of reverse into about after the AC 20KHz, and then by the intermediate frequency
transformer T1 transformer, the fast recovery tube D1, D2, D3 rectified output steady for welding with
DC power supply. While the output transformer T4 is coupled to a high-pressure high-frequency pulse
arc coupled to the negative terminal of the output is very convenient way to non-contact arc welding.
The main structure of the welder
PROTIG PIII Series Digital Inverter DC welding machine with a freely movable box structure: half of the
front panel to adjust the display panel is equipped with various parameter adjustment knob; the lower
half is equipped with current output "+" extremely fast socket, the current output "-" very fast socket,
gun control cable connector, remote control socket, and torch gas torch water interfaces and interfaces;
equipped with a cooling fan on the rear panel, the power input leads and power switch, cooling water
inputs and argon gas inputs; bottom of the tank is equipped with four wheel and the front mounted
lever.

7
The main technical data welder
380V
Item unit PROTIG
315PIII
PROTIG
400PIII
PROTIG
500PIII
Input power V 3～380
frequency Hz 50/60
Rated input capacity KVA 12.5 17.2 20
Rated input current A 19 26 30
OCV V 70 70 70
Rated welding voltage V 22.6 26 30
Welding current A 20～315 20～400 20～500
Base current A 20～315 20～400 20～500
Tig welding current A 20～315 20～400 20～500
MMA welding current A 25～315 25～350 25～400
Current up, down time s0～10
Pulse frequency Hz 0.5～250
duty ratio %0～100
Gas pre-flow s0.3～10
Gas post-flow s0.5～25
Rated output %60
Cool type Fan cooled
TIG arc HF
Efficiency η≥85%
Power factor Cosφ 0.93
Insulation grade level H
IP IP IP21S
oversize L×W×H mm 719*308*633
weight kg 38 38 39
400V
Item unit PROTIG
315PIII
PROTIG
400PIII
PROTIG
500PIII
Input power V 3～400
frequency Hz 50/60
Rated input capacity KVA 13.2 18.1 20.8
Rated input current A 19 26 30
OCV V 73 73 73
Rated welding voltage V 22.6 26 30
Welding current A 20～315 20～400 20～500

8
Base current A 20～315 20～400 20～500
Tig welding current A 20～315 20～400 20～500
MMA welding current A 25～315 25～350 25～400
Current up, down time s0～10
Pulse frequency Hz 0.5～250
duty ratio %0～100
Gas pre-flow s0.3～10
Gas post-flow s0.5～25
Rated output %60
Cool type Fan cooled
TIG arc HF
Efficiency η≥85%
Power factor Cosφ 0.93
Insulation grade level H
IP IP IP21S
oversize L×W×H mm 719*308*633
weight kg 38 38 39
415V
Item unit PROTIG
315PIII
PROTIG
400PIII
PROTIG
500PIII
Input power V 3～415
frequency Hz 50/60
Rated input capacity KVA 13.7 18.7 21.6
Rated input current A 19 26 30
OCV V 65 65 70
Rated welding voltage V 22.6 26 30
Welding current A 20～315 20～400 20～500
Base current A 20～315 20～400 20～500
Tig welding current A 20～315 20～400 20～500
MMA welding current A 25～315 25～350 25～400
Current up, down time s0～10
Pulse frequency Hz 0.5～250
duty ratio %0～100
Gas pre-flow s0.3～10
Gas post-flow s0.5～25
Rated output %60
Cool type Fan cooled
TIG arc HF

9
Efficiency η≥85%
Power factor Cosφ 0.93
Insulation grade level H
IP IP IP21S
oversize L×W×H mm 719*308*633
weight kg 38 38 39
440V
Item unit PROTIG
315PIII
PROTIG
400PIII
PROTIG
500PIII
Input power V 3～440
frequency Hz 50/60
Rated input capacity KVA 12.5 17.2 20
Rated input current A 19 26 30
OCV V 67 67 71
Rated welding voltage V 22.6 26 30
Welding current A 20～315 20～400 20～500
Base current A 20～315 20～400 20～500
Tig welding current A 20～315 20～400 20～500
MMA welding current A 25～315 25～350 25～400
Current up, down time s0～10
Pulse frequency Hz 0.5～250
duty ratio %0～100
Gas pre-flow s0.3～10
Gas post-flow s0.5～25
Rated output %60
Cool type Fan cooled
TIG arc HF
Efficiency η≥85%
Power factor Cosφ 0.93
Insulation grade level H
IP IP IP21S
oversize L×W×H mm 719*308*633
weight kg 38 38 39
Note: The duty cycle is determined at 40 ° under.
HF arc by way of illustration
This arc with the traditional touch-starting methods are fundamentally different, without the tungsten
electrode and the workpiece perform short arc, is the use of high-voltage high-frequency pulses of air
ionization by ionization of the air ion conductivity, thereby an arc.

10
Remark & Sign of Illustration
ground connection
3ph static frequency changer—transformer—rectifier
MIG/MAG。
MMA。
3ph, rated frequency 50Hz，operating frequency 60Hz。
X：duty cycle.
I1max.A：rated max input current.
I1eff...A：max effective input current.
I2：rated welding current.
U0：rated no loading voltage
U1：rated input voltage.
U2：loading voltage
...V：unit of voltage
...A：unit of current
...%：unit of duty cycle
...A/...V to ...A/...V：output range。Min or max rated welding current and relevant loadingvoltage.
IP21S：enclosure protection class. IP is code letter（International Protection）。2 refer to prevent
someone′s finger to approach risk part；prevent no less than12.5mm solid to into the shell。1 refer to
prevent to drip from vertical direction；Vertical drop of water should be no harmful effects。Sreferto
when movable part of equipment is static, the waterproof test can be processed.
H：H Insulation grade。
FUNCTION DESCRIPTION
manual welding
This mode is equivalent to the function of the dc arc welding machine, the manual welding electrode
welding function. This mode is equivalent to the function of the dc arc welding machine, the manual
welding electrode welding function.
DC argon arc welding
Widely used in a variety of carbon steel, alloy steel, stainless steel, copper and copper alloys, nickel and
nickel alloy welding, especially suitable for thin plate welding (3 mm or less) and plate (> 3 mm) in the
opening of one side welding groove butt weld, double-sided molding, backing welding process,
especially suitable for argon arc welding backing, dc manual arc welding more than cover the welding
process.
DC pulsed argon arc welding
Is suitable for thin plate welding, and is suitable for any position of continuous welding, do not need to
adjust the welding specification for welding position change.In both to get a large penetration, and
expect to reduce the welding heat affected zone, pulse welding current, the current base value, the
~
3

11
selection of proper duty ratio will be able to well meet the needs of the concrete.Pulse welding current is
to strengthen the mixing of molten pool, to minimize the pores.Under the same line energy, dc pulse arc
than dc constant current arc penetration is big, pulse current of coagulation, form and normal form is
different, it can improve the mechanical properties of a particular joint.Properly adjusting the parameters
of the pulse and the welding speed, smooth dc pulse argon arc welding can form uniform and
controllable fusion zone (scales).
CURRENT ADJUST DESCRIPTION
Welding current
Arc welding current refers to the "hand/argon arc" mediation function mode the size of the welding
current, refers to the pulse welding at the same time, the current in the largest value.At this time of the
arc heat is big, the workpiece heated, it is used to welding.
background current
Base value is to point to in the pulse electric current welding current, the value of the current in the
hours.When current is small, small arc heat and artifacts have the ability to when the welding current is
working to heat transfer of molten pool, thus reducing due to local overheating deformation.
Pulse Frequency Modulation
Pulse frequency refers to the pulse argon arc welding state, the current in the welding current and base
value current switching between speed and frequency of 0.5 ~ 25.0 Hz.
pulse width regulating
Pulse welding current pulse width at a ratio of the pulse cycle time (that is, the duty ratio), the duty cycle
adjustable in the range of 0 ~ 100%.Such as: the frequency of 5 hz (its pulse cycle is 200 ms) of each
welding current in the pulse current time is 80 ms, so, the pulse width is: 80÷200×100% = 40%.
rise time
From above freezing to rise time refers to the current time value of the welding current is used to.It to
slow down the current rising rate, current slow rise, gradually melted the artifacts, ensure that when the
welding current will suddenly increase has reached the welding technological requirements, time of 0 ~
10 s.
fall time
Fall time is refers to the current from the welding current dropped to zero value all of our time.It to slow
the rate of decline in current and electric current to slow down, gradually submerged arc pit, ensure the
quality of the welding at the end of the time of 0 ~ 10 s.
pre-airing time
Pre aeration time refers to the welding at the start of the shielding gas before working circuit, high
frequency arc used to rule out there in the air in the gas pipeline, prevent bad arc instantaneous gas
oxidation defects, and time is 0.3 ~ 10 s.
postflow time
postflow Time "means after the arc extinguishing, to protect the workpiece is not protected by oxidation

12
and continue to transport the time of the gas.Welding is under the high temperature, high temperature
hot will be oxide parts quickly.And although, at the end of the welding arc extinguishing no longer heated
the artifacts, but molten pool need to place a time, in the break time continue to transport is necessary to
protect gas pool, the time is 0.5 ~ 25 s.
OPERATION METHOD （See the panel figure）
FRONT PANEL BACK PANEL
1 power indicator 2 protection indicator 3 working indicator 4 voltage diplay
5 welding data display 6 Argon arc welding
trigger mode selection
7 remote control
light
8 postflow
timeadjusting knob
9 Fell/rest time adjusting
knob
10 arc current
adjusting knob
11 base value/push
current adjusting
knob
12 pulse frequency
regulating knob
13 torch switch 14 output current quick
plug from the socket
15 shielding gas
output interface
16 water cooling
output interface
17 “+”connector 18 remote control
socket
19 Peak current
duty ratio
adjustment knob
20 Gas welding
current adjustment knob
21 Arc current adjusting
knob
22 Rose / hot spot
welding time adjusting
knob ignition
23 Plenum
adjusting knob in
advance
24 Dc/pulse argon arc
welding
25 Welding function to
choose
26 Control transformer
fuse
27 power switch 28 Shielding gas input
interface

13
29 Water input interface 30 input power supply
terminal 3 ~ 380
Manual welding
use "hand contact arc/argon arc/high frequency argon arc" function on hand position, located in the
"hand arc welding", namely into manual electric arc welding mode.The adjustment knob is to adjust the
welding current, welding current 25A to 400 A.
Also has hot arc adjustment knob and thrust adjustment knob function to improve the welding arc and
droplet transition process.
DC argon arc welding
use "hand contact arc/argon arc/high frequency argon arc" function in contact or high frequency
argon arc, namely into argon arc welding mode;Then the pulse/dc mode on dc mode, namely into dc
argon arc welding mode, the adjustable knobs as below:
Adjust the welding current adjustment knob to adjust welding current, 20 ~ 500 a.
Adjustment pre aeration time adjustment knob to adjust pre aeration time, 0.3 ~ 10 s.
Adjustment arc starting current adjustment knob to adjust the arc current,20~500a.
Adjustment rise time adjustment knob to adjust welding current rise time, 0~10s.
Adjustment fall time adjustment knob to adjust welding current fall time, 0~10s.
Adjustment crater arc current adjustment knob to adjust crater arc current, 20 ~ 500 a.
Adjustment lag expired adjustment knob adjust lag time expired, 0.5 ~ 25 s;
DC pulsed argon arc welding
use "hand contact arc/argon arc/high frequency argon arc" function in contact or high frequency
argon arc, namely into argon arc welding mode;Then pulse/dc mode in the pulse mode, namely into
pulse argon arc welding mode, the adjustable knobs as below:
Adjustment pre aeration time adjustment knob to adjust pre aeration time, 0.3 ~ 10 s.
Adjust the welding current adjustment knob to adjust pulse welding current, 20 ~ 500 a.
Adjustment base value current adjustment knob to adjust base value pulse current, 20 ~ 500 a.

14
Adjust the pulse frequency adjustment knob to adjust pulse frequency, 0.5 ~ 25.0 Hz;
Adjustment arc starting current adjustment knob to adjust the arc current,20~500a.
Adjustment rise time adjustment knob to adjust welding current rise time, 0~10s.
Adjustment fall time adjustment knob to adjust welding current fall time, 0~10s.
Adjustment crater arc current adjustment knob to adjust crater arc current, 20 ~ 500 a.
Adjustment lag expired time adjustment knob to adjust lag time expired, 0.5~25s;
Welding specification parameter table（For reference only）
p
o
si
ti
o
n
m
at
eri
al
connect
or
work
piece
thickne
ss
(mm)
wire
diame
ter
Φ
(mm)
Weldin
g
current
(A)
pol
arit
y
argon
flow
(dm3/mi
n)
tungsten bars
diamet
erΦ
(mm)
taper
angle
flat top
diameter
Φ
(mm)
DC
stainless steel
Straight
edge
docking
1.6~3.0
1.6~2.
5
50~90 DC
stra
ight
pol
arit
y
8~12
1.0 12~20° 0.12~0.2
5
Vtype
groove
＞
3.0~6.0 70~120 1.6 25~30° 0.50~0.7 5
Xtype
groove
＞
6.0~12
2.5~3.
2
100~15
010~14 2.4 35~45° 0.75~1.1 0
Arc welding
carbon steel
butt
joint
≤4 3.2 160~21
0
DC
inv
ers
ed
graf
ting
////
4~12 3~4 210~27
0////
＞12 ≥4 260~30
0////
welding machine maintenance and maintenance
Inverter welding machine and the big difference is that a lot of the welder USES a traditional modern
electronic components, high technology content, is a high-tech product, so the technical requirements of
maintenance personnel is higher.But because there are few easy wear components, so everyday except
the body appearance clean job need to be maintained on a regular basis.Repair welding shall be
conducted by professional maintenance personnel are responsible for.When the user can't rule out the
failure or don't have the ability to repair, should be timely and contact the manufacturer or supplier, get
technology, repairs, spare parts supply and service and support.
Welding machine maintenance main work：
*dedusting
Regularly by professional maintenance staff with dry compressed air (use ai
r
compressor or the tiger skin) for the inside of a welding machine dust
removal, at the same time pay attention to check whether there is any looseness o
n
internal fasteners and connections, if any should be ruled out in

15
time.Generally in dust without serious dust once a year, in the case of dust serious, once or twice every
quarter.。
* Keep the welding cable plug contact is good
When you use should check the contact of the welding cable plug in.Fixed used by the operator to check
at least once a month once, in the mobile when using the inspection should be done before use。
note：*Machine voltage is high, to prevent accidental electric shock during maintenance of the
safety measures. Not trained personnel are strictly prohibited to open thecase
* If dust should cut off power supply before
* When the dust shall not be arbitrarily motivation inside wiring or damaged components.
ATTENTION：
* The ‘Protection Indicator’ on the panel will be on after a long time operation, it shows that the inner
temperature is over the permitted data. The machine should be stopped using for some time to let it
cool down. It can continually use after the light is off.
* Cannot used the water cooler Tig torch to large current welding when without the water supply.
* Under the water cooler condition also need supply the argon.
* The power source, Argon valve and cooling water should be switch off after the operation or
leaving job site temporarily.
* Welders should dress canvas work suit and wear mask to prevent arc light and thermal radiation.
* Light separating screen should be put in the job site to prevent arc hurting other people.
* Inflammable or explosive materials are prohibited to access the job site.
* Every connector of welder should be connected correctly and grounded reliably.

16
TROUBLE SHOOTING
No Breakdown Analysis Solutions
1Cooling fan not
working
Fan is broken Replace or repair
Wire is broken /falling off Find the disconnection and connect it reliably
2NO HF arc-pilot
Torch switch is broken Replace
Main PCB is broken Replace
Wire is broken /falling off Find the disconnection and connect it reliably
3
No output argon No Argon input Check the regulator & gas pipe and resume
supplying gas to welder
Main PCB is broken Replace
Gas valve is broken Replace
Gas path jammed Remove foreign matter & dredge path
4
Lack water
indicator is on
Water pressure is not
enough Increase the water pressure
Water path is Jammed Remove foreign matter & dredge path
5
Overheating
protection
indicator light on
Inside case over heating Recover after the inner temperature cool
down
Heat relay is broken Replace
Power over or under
voltage +-15% Until the voltage is normal
6Panel current
knob
malfunction
The relevant
potentiometer is broken
Replace
Main PCB is broken Replace
Wire is broken /falling off Find the disconnection and connect it reliably
7
Current meter no
display
Current meter no
display
Wire is broken /falling off Find the disconnection and connect it reliably
PCB is broken Replace
Wire is broken /falling off Find the disconnection and connect it reliably
8Arc pilot not
smooth
False connection between
torch and welder
Check & correct according the manual
Argon not pure Change 99.99% Argon
Tungsten electrode not
good or pin head broken
Change to eligible electrode
9Power trip
Power switch first time
turn on after long
time(over two days)cut off
Filter capacitor’s charge in the main circuit
lead to trip, return on the switch is OK.
10 others Please connect with our company

17
SPARE PARTS LIST

18
NO code（EBS）English name specifications Qty
111010011795 cover PROTIG 500W PULSEii 1
220070250092 control transformer PTP500.10.24D33.3.1
380V/19/19/24V/73W/0.5KVA 1
311050110283 PWM PCB board NB-350E 1
420070120123 capacitor DMJ-MT 40uF±5%/800V DC
5filter capacitor 1
620030302216 common mode inductance NB500E/PM500.10.24D33.3.2 1
720040300009 cable fixed head EG-21 1
811110150117 power input cable PROTIG 400W PULSE 1
920070520004 fuse BF015 6.3A/250V 1
10 11020013352 capacitor fixed plate NB500E/PM500.10.24D33.3.6 1
11 11010032554 back panel fixed plate PRPTIG 400W PULSE 1
12 20050050650 fan window INVERMIG 500E/232*205.5*52.1 1
13 20050170019 cable press plate NB500.5-2 2
14 20050050654 plastic panel INVERMIG-500E/572*308 1
15 20070800139 breaker 断路器 1
16 11020011828 switch 8HG.125.044 2
17 20070550033 magnetic valve VZCT2.2/0-0.6MPa 1
18 11020015828 fan fixed plate INVERMIG 500E 1
19 20050050179 heat sink insulating plate ZX7400E.2.2-1 1
20 20070890147 fan 1
21 11010021179 left panel INVERMIG-500W 1
22 11020013350 fast recovery heat sink insulating
plate NB500E/PM500.10.24D33.8.3-2 2
23 20070430166 heat sink 200*200*100/IGBT 1
24 20070430165 heat sink 散热器 ROHS 1
25 11020013349 fast recovery heat sink holder NB500E/PM500.10.24D33.8.3-1 2
26 20070280135 fast recovery diode STTH6003CW 60A/300V 12
27 11020013350 fast recovery heat sink insulating
plate NB500E/PM500.10.24D33.8.3-2 2
28 11050110262 output rectifier board NB500E/PM500.10.24D33.8.3.1.1 1
29 11010060796 bottom panel up shield plate NB500E/PM500.10.24D33.8-1 1
30 11010041326 bottom panel INVERMIG 500E 1
31 11040030254 output reactor assembly WSM-500 1
32 11050110246 output small load plate PE500.11.44D33.5.1 1