TradeWeld GENX MIG2800S INDUSPRO User manual

2
CONTENTS
Contents & Explanation···········································································································2
Safety Warning & Duty Cycle Explained ····················································································3
Machine Description ···············································································································4
Technical Specification ···········································································································5
Accessories & Consumables ···································································································6
Assembly of Bottle Bracket ·····································································································7
Operation of MIG / LIFT TIG / STICK··························································································8-9
Installation of MIG / LIFT TIG / STICK ························································································10-11
Panel Functions······················································································································12
Specification Chart Guide lines ································································································13-14
Typical MIG Process settings ···································································································15
Operating Precautions ············································································································16
Maintenance ···························································································································17
Daily checking ························································································································18
Troubleshooting & Fault Finding ······························································································19
Explosion Diagrams & Part List································································································20
Circuit Diagram·······················································································································21
Warranty & Owners Records ····································································································22
!!DO NOT LIFT THE MACHINE WITH THE BOTTLE ATTACHED!!
Conforms to relevant safety standards.
To reduce the risk of injury, user must read instruction manual.
Do not dispose of old appliances with domestic rubbish.

3
SAFETY WARNING
In the process of welding, there could be possibilities of injury, so please take
protection into consideration during operation. For more details please read the
Operator Safety Guide, which complies with the preventive requirements of the
manufacturer.
Electric shock——Can kill ！
⚫Set the earth fitting according to applying standard.
⚫Do not touch the bare electric parts and electrode with uncovered skin, wet gloves or clothes.
⚫Make sure you are insulated from the ground and the work piece.
⚫Think safety first.
Gases and fumes——May be a health hazard！
⚫Keep your head out of the gases and fumes produced by welding.
⚫When welding, ventilators or air extractors should be used to avoid breathing in the gases.
⚫Wear suitable respiratory protection
Arc rays——Harmful to your eyes and will burn your skin.
⚫Wear suitable protective welding mask, light filter and protective garment to protect eyes and body.
⚫Prepare suitable protective mask or curtain to protect bystanders.
Fire——Fire extinguishing equipment kept nearby!
⚫Cutting spark may cause fire, make sure there are no flammable materials or liquids around the working area.
Noise——Excessive noises will be harmful to your hearing.
⚫Use ear protector or others means to protect ear.
⚫Warn bystanders that noise is harmful to hearing.
Malfunction——Use qualified technician to repair machine.
⚫If faulty during installation and operation, please follow this manual instruction on fault finding.
⚫If you fail to fully understand the manual, or fail to solve the problem with the instructions, you should contact the
suppliers or the service centre for professional help.
Gloves——Arc rays will burn your hands.
⚫Wear suitable protective gloves to protect your hands from molten metal.
DUTY CYCLE 60%
Duty Cycle is a percentage of 10 minutes that the unit can weld at rated load without overheating. If unit overheats,
thermostat(s) opens, output stops and the cooling fan runs. Wait fifteen minutes for unit to cool down. Reduce
amperage, or duty cycle before welding again.
Exceeding the duty cycle can damage the machine and void the warranty
CAUTION WORKING LONGER THAN RATED DUTY CYCLE
CAN DAMAGE MACHINE AND VOID WARRANTY

4
MACHINE DESCRIPTION
Thank you for purchasing a TRADEweld product. The TRADEweld MIG2800S INDUSPRO is
manufactured with the most advanced technology in the world.
The principle of this technology is to transform the power frequency of 50Hz/60Hz into
direct current and invert it into high frequency (33 KHz) through high-power IGBT
device’s, then a voltage-drop will be created through the high-power D.C power
transformers with full digital Pulse Width Modulation (PWM) controlled technology. The
development of inverter welding equipment has massive benefits which include greatly
reduced size and weight, greater power efficiency, multi-process capabilities and many
more.
The development of inverter welding equipment has massive benefits which include greatly
reduced size and weight, greater power efficiency, multi-process capabilities and many more. The
inverter welder’s power source produces a much stronger and concentrated stable arc which
results in better quality and more efficient welds.
In MMA mode, this unit is a constant currant DC MMA (Arc) inverter welder.
In Lift TIG mode, this unit is a constant current DC scratch start inverter welder.
In MIG mode, this unit is a constant voltage DC MIG inverter welder.
The MIG Series are very efficient and robust. Using advanced technology together with an array of
adjustment controls you can produce superior MIG welds. The advanced feature of polarity
adjustment allows the welders to use Gas or Gasless MIG wire. The compact size and weight with
it being on wheels and a place to secure the gas bottle to the machine makes it a perfect
candidate for moving the machine around the workshop with the bottle attached.
TIG welding stainless & mild steel with this machine is possible with the scratch start system on the
LIFT TIG function. (TIG accessories not supplied)
A facility has been made for the attachment of a hand held Spool Gun (Not supplied) to be connected
for ease of aluminum welding.

5
TECHNICAL SPECIFICATIONS
MODEL MIG2800S
INDUSPRO MIG3200S INDUSPRO
Rated Input Voltage AC220V±15%
1Phase AC380V±15% 3Phase
Frequency（Hz）50/60 50/60
NO Load Voltage 56V 61V
Rated Input Current 16.7A
51.6A
MIG Output Current Range 50A-300A
50A-250A
Output Voltage Range 16.5V-29V
16.5V-26.5V
Rated Input Current 18.5A
58.4A
MMA Output Current Range 25A-300A
25A-250A
Output Voltage Range 21V-32V
21V-30V
Rated Input Current 12.7A
39A
TIG Output Current Range 15A-300A
15A-250A
Output Voltage Range 10.6V-22V
10.6V-20V
Spool gun connection Yes Yes
Spool size 15kg
Wire size 0.6 / 0.8 / 1.0 0.8 / 1.0 / 1.2
Efficiency（%）80 85
Power Factor 0.73 0.93
Load Duty Cycle 60% @ 250A 60% @ 300A
Weld safe device (VRD) YES +24V YES +24V
Protection Class IP21 IP21
Cooling method Fan-cooled Fan-cooled
Dimension L x W x H (mm) 900x520x765 900x520x765
Weight （kg）42.5 43.5
15kg

6
ACCESSORIES & CONSUMABLES
Supplied with the MIG2800S and MIG3200S in the box is the following:
1 x MB 25 torch 1 x earth clamp and cable
1 x 2m gas pipe 1 x electrode holder and cable
2 x hose clamp 1 x SR26 TIG torch
MB25 TORCH
EWB00307

7
ASSEMBLY OF BOTTLE BRACKET
If the components are packed separately, users should install them as following:
⚫Fit the bottle holder left and right support brackets and axle to the bottle holder with 6 x M5 screws as figure 1.
⚫Fit the wheels to the axle with washers and circlip as figure2.
⚫Then install from the bottom the bottle holder with 5 x M6 screws as figure 3.
⚫Fit the bottle support brackets to the back panel with 4 x M5 screws as figure 4.

8
OPERATION OF MIG / LIFT TIG / MMA
The machine is equipped with a power voltage regulator. When power voltage moves between ±
15 % of rated voltage, it will still work normally. Should an extension cable be required (not
recommended), a cord gauge of not less than 2.5mm is suggested and not longer than 10 metres.
To prevent the malfunction of the cooling system make sure the fan intake of the machine is not
covered or blocked.
Panel Buttons
1. STICK Mode –Press the [MIG/TIG/MMA Button] Till the MMA indicator lights up, and it turns into
MMA mode (Also known as arc, stick or electrode welding). (MMA –Multi Metal Arc)
LIFT TIG Mode –Press [MIG/TIG/MMA Button] Till the TIG indicator lights up, and it turns into TIG
mode. (TIG –Tungsten in Inert Gas)
MIG Mode –Press the [MIG/TIG/MMA Button] Till the MIG indicator lights up, and it turns into
MIG mode. (MIG –Metal in Inert Gas)
2. VRD (In MMA mode) - When the current is 108A, press 2T/4T switch hold 3 seconds to switch on or off
(VRD – Volt Reducing Device)
VRD ON - Volt safe is activated the voltage will be 24v; when the electrode strikes the work piece
the voltage will go up to 56v
when welding stops 3sec later the voltage will drop to 24v.
VRD OFF - Volt safe is deactivated the voltage will be about 56v.
3. 2T/4T Mode (In MIG mode) –Press [2T/4T] button will select the trigger hold ON or OFF;
2T NORMAL mode light on –2 step control: Press the torch switch, feeds the gas, and weld
normally; release the torch switch, welding stops.
4T LATCH mode light on –4 step control: Press the torch switch for the first time, feeds the gas and
ignite the arc to perform welding; then release the torch switch and perform welding normally.
Press the torch switch for the second time, the welding current continues to a crater value then
release the torch switch again; welding stops.
4. MIG / SPOOL GUN Mode –selecting MIG will activate the wire feed motor in the machine.
5. VOLTAGE ADJUSTMENT KNOB –Adjust the range of outputvoltage.
6. CURRENT ADJUSTMENT KNOB –Adjust the range of output current.
7. ARC CHARACTERISTIC KNOB –Adjust the soft/hard range of the arc
MMA
1. Switch the MODE selector to MMA
2. The electrode holder and earth clamp are easily connected to the machine by inserting the quick
connector and twisting it clockwise. Always ensure a correct fit. Please pay attention to the connection
polarity.
Generally, Reverse Polarity is used in which the welders electrode holder will be connected in the “+”
Positive Terminal while the earth clamp in the “-”Negative Terminal. The welder does have the ability
to be used for Straight Polarity or Reverse Polarity. We recommend you connect the polarity in
accordance with the Manufacturers of the electrodes recommendations. If the polarity is connected
incorrectly it will cause an unstable arc, spatter, and/or the electrode to stick. If these symptoms occur
change the polarity.
3. Set the amperage as described on page 13 to the correct settings based on the thickness of the welding
rod being used.
the VRD function.

9
LIFT TIG
1. Switch the MODE selector to TIG
2. You will need: A TIG torch with a valve and a 10-25 dinse connector, An Argon flow Meter and Argon
gas, Consumables such as Thoriated tungsten, ceramic shroud, back cap, collet and collet body.
3. Connecting: The TIG torch is connected to the negative terminal and the earth is connected to the
positive terminal, connect the gas hose to the Argon flow meter on the gas bottle and set gas flow
between 10-15 LPM and sharpen the tungsten tip.
4. Method to TIG Welding: Open valve on torch before welding and close valve + 8 seconds after welding
to cool tungsten tip (silver color), To strike an arc the tungsten tip must scratch the surface of the work
piece and lifted to about 3mm away to stop welding pull torch away from work piece.
4. Set the amperage as described on page 12 to the correct settings based on the thickness of the
tungsten being used.
MIG
1. Switch the MODE selector to MIG.
2. If using gas assisted (solid) wire, Connect the gas bottle with the flow meter and a gas hose to the back
of the machine, secure gas bottle to the wall so it cannot fall over.
3. A) SOLID WIRE: Insert the earth cable quick connector (jack plug) into the negative dinse socket
output in the front panel and the clamp on to the work piece. Insert the MIG quick connector (jack
plug) into the positive dinse socket output in the front panel.
B) GASLESS WIRE: Insert the earth cable quick connector (jack plug) into the positive dinse socket
output in the front panel and the clamp on to the work piece. Insert the MIG quick connector (jack
plug) into the negative dinse socket output in the front panel.
4. Fit the MIG wire on to the spool adaptor and ensure wire direction is a clockwise rotation to let wire out.
5. Choose drive roll and contact tip according to wire size.
6. Loosen the pressure wheel, fit wire through the spring inlet guide over drive roll and through the brass
outlet guide, close pressure wheel and adjust pressure so wire feeds through but can slip if wire gets
jammed.
7. Fit the wire into the torch by hand and then tighten the torch on to the euro output socket.
8. Press torch button to feed wire to end of torch tip. Weld with a distance/stick out of about 10 times the
wire thickness.
9. Open the valve of the gas cylinder and adjust the flow rate to 10 –15 LPM (Liters per Minute).
10. Adjust the voltage and wire speed (amperage) as described on pages 13-14 to the correct settings
based on the thickness of the work piece and wire diameter.
11. Press the torch switch to feed out the wire and gas and begin to work.
Spool Gun: To install the spool gun; Power Off the welder, remove the standard MIG gun and MIG wire
then install the Spool Gun in to the euro adapter and connect the control wire plug to the 4 pin receptacle
on the front panel of the welder. You must Change the MODE from MIG Torch to Spool Gun “light ON”.
This will disable the drive system of the welder and enable the Spool Gun’s drive system. Reference the
owner’s manual of the Spool Gun for operating procedures and instructions of the Spool Gun.

10
MIG INSTALATION
TIG INSTALATION
INSTALLATION OF MIG / LIFT TIG

11
MMA INSTALATION
SPOOL GUN INSTALATION
INSTALLATION OF MMA / SPOOL GUN

12
ELECTRODE CHART GUIDELINE
TIG CHART GUIDELINE
1.6mm Thoriated Tungsten 2.4mm Thoriated Tungsten 3.2mm Thoriated Tungsten
10 – 120 A 80 – 180 A 150 – 320 A
1 Four core socket 6 2T/4T switch button 11 Voltage meter
2 Euro Adapter 7 MIG/TIG/MMA switch button 12 Current meter
3 Current adjustment button 8 VRD indicator 13 Negative output terminal
4 Voltage adjustment button 9
MIG torch / Spool Gun
selector
14 Positive output terminal
5 Arc trait adjustment button 10 Quality Control failure light 15 Quick connector
Electrode size
6013
2.0 mm 2.5 mm 3.2 mm 4.0 mm 5.0 mm
Amperage 50 – 80 A 70 – 100 A 110 – 140 A 150 – 210 A 200 – 280 A
PANEL FUNCTIONS
16 17
16 Burn back adjustment button
17 Quick feed button

13
MIG CHART GUIDELINE
Plate
thickness
Wire
diameter Interval Current Voltage Weldin g speed
Wire
extensio
n
Gas flow
rate
（mm）(mm) (mm) (A) （V）(cm/mi
n) (mm) (L/min)
I Square butt welding
Low welding speed
0.8 0.8,0.9 0 60～70 16～16.5 50～60 10 10
1 0.8,0.9 0 75～85 17～17.5 50～60 10 10～15
1.2 0.8,0.9 0 80～90 16～16.5 50～60 10 10～15
1.6 0.8,0.9 0 95～105 17～18 45～50 10 10～15
2 1.0,1.2 0～0.5 110～120 18～19 45～50 10 10～15
2.3 1.0,1.2 0.5～1.0 120～130 19～19.5 45～50 10 10～15
3.2 1.0,1.2 1.0～1.2 140～150 20～21 45～50 10～15 10～15
4.5 1.0,1.2 1.0～1.5 160～180 22～23 45～50 15 15
1.2 1.2～1.6 220～260 24～26 45～50 15 15～20
High welding speed
0.8 0.8,0.9 0 100 17 130 10 15
1 0.8,0.9 0 110 17．5 130 10 15
1.2 0.8,0.9 0 120 18．5 130 10 15
1.6 1.0,1.2 0 180 19．5 130 10 15
2 1.0,1.2 0 200 21 100 15 15
2.3 1.0,1.2 0 220 23 120 15 20
3.2 1.2 0 260 26 120 15 20
Plate
thickness
Wire
diameter Current Voltage Welding speed
Wire
extensi
on
Gas flow rate
（mm）（mm）（A）（V）（
cm/min) （mm) （L/min）
Fillet butt welding
1.6 0.8,0.9 60～80 16～17 40～50 10 10
2.3 0.8,0.9 80～100 19～20 40～55 10 10～15
3.2 1.0,1.2 120～160 20～22 35～45 10～15 10～15
4.5 1.0,1.2 150～180 21～23 30～40 10～15 20～25

14
MIG CHART GUIDELINE CONTINUED…
Plate
thickness
Wire
diameter
Welding
gun
vertical
Current Voltage Welding
speed
Wire
extension
Gas flow
rate
（mm）（mm）angle(°) （A）（V）(cm/min) （mm）（L/min）
Horizontal fillet butt welding T joint
Low welding speed
1 0.8,0.9 45Deg 70～80 17～18 50～60 10 10～15
1.2 0.9,1.0 45Deg 85～90 18～19 50～60 10 10～15
1.6 1.0,1.2 45Deg 100～110 19～20 50～60 10 10～15
2 1.0,1.2 45Deg 115～125 19～20 50～60 10 10～15
2.3 1.0,1.2 45Deg 130～140 20～21 50～60 10 10～15
3.2 1.0,1.2 45Deg 150～170 21～22 45～50 15 15～20
4.5 1.0,1.2 45Deg 140～200 22～24 45～50 15 15～20
6 1.2 45Deg 230～260 24～27 45～50 20 15～20
8.9 1.2,1.6 50Deg 270～380 29～35 45～50 25 20～25
12 1.2,1.6 50Deg 400 32～36 35～40 25 20～25
High welding speed
1 0.8,0.9 45Deg 140 19～20 160 10 15
1.2 0.8,0.9 45Deg 130～150 19～20 120 10 15
1.6 1.0,1.2 45Deg 180 22～23 120 10 15～20
2 1.2 45Deg 210 24 120 15 20
2.3 1.2 45Deg 230 25 110 20 25
3.2 1.2 45Deg 270 27 110 20 25
4.5 1.2 50Deg 290 30 80 20 25
6 1.2 50Deg 310 33 70 25 25
Horizontal fillet welding joint
Low welding speed
0．8 0.8,0.9 10Deg 60～70 16～17 40～45 10 10～15
1.2 0.8,0.9 30Deg 80～90 18～19 45～50 10 10～15
1.6 0.8,0.9 30Deg 90～100 19～20 45～50 10 10～15
0.8,0.9 47Deg 100～130 20～21 45～50 10 10～15
2.3 1.0,1.2 47Deg 120～150 20～21 45～50 10 10～15
3.2 1.0,1.2 47Deg 150～180 20～22 35～45 10～15 20～25
4.5 1．2 47Deg 200～250 24～26 45～50 10～15 20～25

15
TYPICAL MIG PROCESS SETTINGS
1
Select wire size
Wire size: Recommended Wire Speed (Approx.)
Select Voltage Low voltage: wire stubs into work
High voltage: arc is unstable (spatter)
Set voltage midway between high/low voltage
1
Wire Speed (amperage) controls weld penetration
(Wire speed = burn-off rate)
Voltage controls height and width of weld bead
NOTE These settings are guidelines only. Material and wire type,
joint design, setup position, shielding gas, etc. affect settings. Test
welds to be sure they comply with specifications.
Wire size Amperage range Gas L/min
0.8mm
0.9mm
1.0mm
40 –154A
50 –180A
60 –270A
10
10-15
15-25
Select wire size 125A based on 3mm
material thickness M/pm meters per minute
0.6mm 88mm per ampere 11m/min
0.8mm 50mm per ampere 6.3m/min
1.0mm 40mm per ampere 5.0m/min
Material thickness
determines weld
parameters
MILD STEEL
Convert material thickness
to Amperage (A)
(0.024mm = 1 Ampere)
3mm = 125 A
(3mm ÷ 0.024mm = 125A)

16
OPERATING PRECAUTIONS
1. Operating Environment
a. The machine can perform in environments where conditions are dry with a max humidity of 60%.
b. Ambient temperature should be between -10 to +40 degrees centigrade.
c. Avoid operating machine in direct sunshine, rain, or snow.
d. Avoid operating the machine in environments where there is pollution or high concentrations of dust or
corrosiveness gas in the air.
2. Proper Ventilation
All users must ensure proper ventilation of the welder. The welder is powerful and compact machine which generates
high currents and heat. Make sure the machines vents and fans are not blocked or covered and is receiving proper
ventilation in order to keep the components from overheating and malfunctioning. Keep the welder at a minimum of
30cm from any objects to ensure proper ventilation.
3. Avoid Overvoltage
The specific power voltage can be found in the main technical specification chart listed above or on the rear plate of
the machine. The automatic voltage compensation circuit will ensure that the welding current is functioning in the
correct range. If the power voltage is exceeded from the max allowed value it will damage the components of the
machine.
4. Avoid Overloading
Limit the welding current strictly to the max allowable duty cycle. Do not exceed the max load because overloading
can damage the machine.
5. Duty Cycle
Duty cycle refers to the percentage of the working time against a 10-minute work cycle. For example, if the welder has
a 60% duty cycle at 250A this means you can run the welder at 250A for 6 min in a 10 min work cycle. The remaining
4 minutes will be needed to let the machine cool down. If the welding current decreases, the duty cycle will increase
and vice versa.
Do not operate over the recommended duty cycle of the welding machines or damage will occur to the machine that is
irreversible. When output exceeds the duty cycle limit, the temperature within the welding machine will rise and the
protective circuit will cut off the power source output. The power output will then resume operation only when the
equipment has cooled down to normal temperature.
Note: Continuous overload operation will damage the welding power source. In these cases, the damage is not
covered by warranty repair.
WARNING! This machine produces an electromagnetic field during operation. This field may under some
circumstances interfere with active or passive medical implants. To reduce the risk of serious or fatal injury, we
recommend persons with medical implants to consult their physician and the medical implant manufacturer before
operating this machine.

17
MAINTENANCE
1. Remove dust with dry, clean compressed air regularly, if the welding machine is
operated in an area where the air is polluted with smoke and dust, the machine
needs to be cleaned regularly, remove dust monthly.
Pressure of compressed air must not be more than 5 bars in order to prevent
damage to small components inside the machine.
2. Check inside the welding machine regularly and make sure the output terminals
are connected tightly and connectors are not damaged. If burnt, lose or damaged
please tighten or replace if necessary. Beware of moving parts.
3. Avoid water and steam entering into the machine, if the welding machine
dose get wet please dry inside the machine and check the insulation of
machine.
4. If the welding machine will not be operated for long periods it should be
put into a box or covered and stored in a cool dry area.
WARNING!
Before maintenance and checking, power must be turned off,
Before opening the cover disconnect the machine from electricity!
WARNING!
•This machine is mainly used in the welding industry. It will produce Electric
& Magnetic fields, so the operator should insure proper protection/screening
is used
•Earth leakage-circuit breaker should be used with this machine!!!
•During welding, DO NOT pull out or insert any plugs or cables, it can lead to
life-threatening danger and cause damage to the machine.
•Before connecting cables make sure the power is off.
The correct way is to connect the cables to the machine first, and make sure
they are firmly tightened and then connect the power plug to the power
source.

18
DAILY CHECKING
The following can cause problems with welding: Fittings, welding materials, environmental factors,
power supply and welding techniques. User must try to improve working conditions.
WELDING MACHINE
Position
Checking keys
Remarks
Control
panel
1. Condition of switches and potentiometers.
2. Volt and Amp display.
3.
Warning lights
Replace if faulty.
Cooling fan 1. Check if there is air flow.
2. Abnormal vibration or noise. Check for obstructions at fan intake or broken blades.
Powered
ON 1. Any burnt smell. 2.
LED working.
Check fault finding.
Periphery 1. Check gas pipe not leaking or kinked. 2. Check housing and other fixed parts are tight and or
damaged.
Correct any faults.
WIRE FEEDING ASSEMBALY
Pressing
arm 3. Check that it is not over tightened and is not melted / distorted Leeds to wire slipping.
Wire
inlet &
outlet guide
Tube
1. Check that there is no buildup of steel dust in the
tube(residue)
2. Wire diameter and the tube inner diameter match
3. Check that the tube lines up with the center of the drive
roll slot
Clean the residue and check the
reason and solve it.
If not match, lead to unstable arc and
residue.
If unaligned, leads to unstable arc and
residue build up.
Drive Roll 1. Drive roll matches the wire size.
2. Check that slot is not blocked up
Leeds to unstable arc and the wire
slipping or deforming.
Replace if worn out.
Pressure
wheel Check the stability of its movement, and wearing-out of
pressure wheel(bearing)
Lead to unstable arc and wire
slipping.
MIG TORCH
Nozzle/
Shroud 1. If distorted or damaged 2. Splatter built up. Replace. Can cause porosity.
（use anti splatter spray）
Contact Tip 1. Hole in tip oval worn out.
2. Hole blocked or wire welded on to tip
Replace - unstable and broken arc
Replace - reason worn tip, voltage to
high, rusted or dirty wire.
Wire Liner
1. Check the liner is the correct length.
2. Check wire diameter and the liner inner diameter are
correct
3. Partial unwinding and stretching
4. Blocked caused by rust and dust in the tube, and fillings
of the wire copper coating.
5. Liner broken or bent.
Must touch tip - Replace if too short
will cause the arc to be unstable.
Reason of unstable arc, please use
the correct liner.
Result in poor wire feeding and
unstable arc, please change.– replace
Replace
Tip Adaptor 1. Threads damaged or distorted
2. Holes blocked
Replace – can damage contact tip or
swan neck and cause unstable and
broken arc, porosity in weld
CABLE
Torch cable 1. If torch cable coiled or kinked.
2.
If the Euro adaptor connector on the torch is tight
Cause poor wire feeding Unstable arc if cable coiled or kinked.
Output
cable
1. Wearing-out of the cable insulated material.
2. Cable jack plug connector exposed or loose
3.
Earth clamp not damaged or burnt, lug tightened
Loose or bad connections get very
hot causing a drop in welding
amperage
220v Input
cable 1. Check the cable between the plug and the machine 2.
Plug is in good condition
Replace damaged plugs with correct
amperage plug

19
TROUBLESHOOTING AND FAULT FINDING
Notes: only attempt to repair this machine if you have knowledge and understanding of electronic components and the
dangers of electricity and components holding a charge of high voltage electricity. Before maintenance contact the agent
for authorization is suggested.
DO NOT REPAIR OR MODIFY MACHINE IF STILL UNDER WARRANTY
If the machine fails to work after maintenance and checks, please contact your local distributor or our after-sale service
center.
WARNING! Experimentation and careless maintenance may lead to more
problems to the machine. This will make formal diagnostic and repair more difficult.
When the machine is open there may be exposed connections containing life-
threatening voltages. Any direct or indirect touch will cause electric shock, and
severe electric shock will lead to death.
Faults Remedy
Power indicator is
not lit, fan does
not work and no
welding output
1. Make sure power switch is working.
2. Check if the plug point you are using is working.
3. Some of heat-variable resistors on power board circuit are damaged, when that happen,
general DC24V relay is open or connectors have poor contact.
4. Power circuit is damaged, DC310V voltage cannot be sent to the board.
a) Silicon Bridge is broken or connector of Silicon Bridge has poor contact.
b) Power board rectifiers have been burnt.
c) Check connections from ON switch to power board are in good condition, check
continuity of ON OFF switch.
d) Check cable from control board to display board are connected properly.
5. Auxiliary power of control board is faulty.
Power indicator is
lit, fan works, no
welding output
1. Check if all cables are connected properly.
2. Output connector is disconnected or damaged.
3. Control cable or switch of torch is broken.
4. Control circuit is damaged.
5. Is correct welding process selected?
6. Is the MIG torch connected
/ working
?
Power indicator is
lit, fan works, and
abnormal
indicator is lit.
1. Can be in overheat protection; wait for 15 minutes.
2. Maybe it is overcurrent protection, turn machine off for 30 seconds then switch on again. If
still not working there is a fault on the main board.
3. Reactor Transformer is damaged.
Output Current is
not stabilized
1. Supply voltage is not stable.
2. There is harmful interference from supply voltage or other equipment.
3. Bad connections - Hot/bad connections or points on earth cable or electrode holder can
cause current to drop or be unstable.
There is porosity
in the weld (air
holes)
This happens if not enough shielding gas is supplied around the weld or foreigner gasses/air
enter the weld:
1. Check that the gas supply is flowing sufficiently out the torch.
2. Clean surface of welding material of oils, stain, rust, lacquer or other impurity.
3. Incorrect shielding gas is being used or contaminated gas.
4. Dirt partials may have blocked gas solenoid.