KOP & WDHOM KP-MIG200D User manual

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Operation Manual
KP-MIG200D MIG Welding Machine

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Version
Due to product version upgrades or other reasons, the contents of this document are not regularly updated. Unless
otherwise agreed, this document is intended as a guide only and all statements, information and recommendations in this
document do not constitute any guarantee, expressed or implied.
The pictures in this document are for reference only. If the picture is different from the real one, then use the pictures for
guidance only.
Contents
Contents ...................................................................................................................................................- 2 -
1 Brief Product Introduction .....................................................................................................................- 3 -
1.1 Summarize .................................................................................................................................. - 3 -
1.2 Technical Parameters ..................................................................................................................- 3 -
1.3 Accessories list ............................................................................................................................ - 4 -
2 Installation Instructions ......................................................................................................................... - 4 -
2.1 Welding Wire Installation Steps: ................................................................................................. - 4 -
2.2 MIG & TIG Torch Exploded Diagram -TIG torch is not included in standard accessories ........ - 6 -
2.3 Gas Shielded Welding Installation. ............................................................................................. - 6 -
2.4 MIG Spool Gun Installation. ........................................................................................................ - 6 -
3 Operating Instructions .......................................................................................................................... - 7 -
3.1 Operation Panel Interface ........................................................................................................... - 7 -
3.2 Welding Operation Instruction .....................................................................................................- 7 -
3.3 Polarity Conversion Joint .......................................................................................................... - 10 -
4 Trouble Shooting And Error Checking ................................................................................................- 11 -
5 Daily Maintenance And Checking ...................................................................................................... - 13 -
5.1 Daily Maintenance .....................................................................................................................- 13 -
5.2 Daily Checking .......................................................................................................................... - 13 -
5.3 Welding Problems And Solutions ..............................................................................................- 14 -
6 Attention .............................................................................................................................................. - 15 -
6.1 Welding Environment And Safety ............................................................................................. - 15 -
6.2 Symbol Definition: ..................................................................................................................... - 16 -
7 Appendix ⅠWelding Parameter List ................................................................................................. - 20 -
8 Service Guarantee ..............................................................................................................................- 22 -
9 Recommend Related Accessories ..................................................................................................... - 22 -

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1 Brief Product Introduction
1.1 Summarize
1.2 Technical Parameters
1IGBT Inverter
Technology
This device uses single tube IGBT inverter technology (the inverter frequency range is from
25-50KHz) to convert 50/60Hz alternating current (AC) to direct current (DC) and then to high
frequency and lower voltage rectification. The resulting pulse width modulation (PWM) output can
be used for the high-power DC power supply, Due to switching power inverter technology adopted,
the weight of the welder has been significantly decreased and the conversion efficiency of the
whole machine is increased by more than 30%.
2Superior
Performance
The machine can be used for gas sheilded welding. The welder is equipped with a unique digital
electronic reactor circuit. The welding process of short circuit transition and mixed transition can be
controlled very precisely. It has excellent welding characteristics.Compared with silicon controlled
welders and tapped welders, it has the following advantages: stable wire feeding speed, low
energy consumption, energy saving and no electromagnetic noise.It also has the characteristics of
reduced spatter, stable arc, deep pool and high load.
3 Wide Voltage
Our welding machine is equipped with a power supply voltage compensation device，The power
supply voltage will work when the rated voltage is within 15% of requirements. When using
extension cords, in order to reduce voltage drop, use a heavy duty extension cord (10 or 12AWG or
greater) or use the recommended configuration length.
4 Multifunction
The machine is a versatile product which include MIG gas, MIG gasless, Lift TIG , STICK welding
and spool gun function.It has the advantages of high efficiency and power saving, and it is suitable
for welding of multi-metal and multi-process requirements.
5 Easy Control
You can use the amperage knob to select the appropriate amperage according to the material and
thickness of the workpiece and you can get very good welding results by setting the voltage knob
to the same angle as the amperage knob.
6 Portability
This welder is suitable for home use. Its portability, light weight of only 14KG and 60% duty cycle
on 200A make it the perfect machine for on-site job and DIY projects. With fluxed core wire, this
welder allows you to work without bringing along a heavy gas cylinder. This is your ultimate
weldiny partner!
7 Attention
Wire spool hold down not put on correctly, this will make the wire not come off the spool smoothly.
To much tension on the drive roller or not enough tension.
Using the wrong size roller for wire.
Not connecting the mig to the + or- terminal before trying to weld.
Machine type KP-MIG200D
Supply voltage (V) 1 phase AC 110V/230V±15%
Frequency (Hz) 50/60
Rated Max. Input current (A)
110V
37 (MIG)
30.2 (MMA)
17.6 (TIG)
220V
30 (MIG)
27.4 (STICK)
16.7 (TIG)

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1.3 Accessories list
KP-MIG200D*1 Welding
Torch *1
Electrode
Holder Set *1 Work Clamp*1 Gas hose*1 Flux Cored
Welding Wire *1
2 Installation Instructions
2.1 Welding Wire Installation Steps:
To install a fresh reel of welding wire into the wire feeder. The hole position of the wire plate should be aligned with the
fixed plug on the shaft.
The wire reel should be rotated so that the wire feeds from the bottom of the reel into the wire feeder. Following the
diagrams below as a guide, place the reel over the spindle in the machine and fasten it into place with the washers,
Output current adjustment (A)
110V
40-140(MIG)
30-100 (STICK)
30-100 (TIG
220V
40-200 (MIG)
30-150 (STICK)
30-150 (TIG)
Output voltage (V)
110V
16.0-21.0 (MIG)
21.2-24.0(STICK)
11.2-14.0 (TIG)
220V
16.0-24.0 (MIG)
21.2-26(STICK)
11.2-16 (TIG)
No load voltage (V) 50±5
Duty cycle (%) 60
Power factor 0.7
Efficiency (%) 85
Wire feeder type All-in-one
Wire feed speed(m / min) 2-15
Wire diameter (mm) 0.8/1.0
Insulation grade F
Enclosure protection class IP21
Suitable plate thickness (mm) 0.5-5
Net Weight (kg) 14
Overall dimension (mm) 470×320×376

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spring and nut. There should be slight tension on the reel, just enough to prevent it from unwinding. While using one
hand to preventin the wire from suddenly unwinding from the reel, loosen the free end of the wire from the edge of the
reel. Snip off the croooked or bent tip and insert the tip of the wire into the metal spring wire guide of the wire feeder.
0.030”(0.8mm)/0.040”(1.0mm)diameter 0.030” (0.8mm)/0.040” (1.0mm)diameter
4”（100mm 1kg）wire spool 8”(200mm 5kg)wire spool
According to the type and diameter of the wire, select the appropriate wire feed roller. V-grove roller for stainless steel
and carbon steel, Knurled-grove roller for flux cored wire and U-grooved roller for welding aluminum in the spool gun
(spool gun and U-groove roller are not included with the machine and must be purchased separately.) Please match
diameter size on the roller with the welding wire diameter. Please note that the wire feeder feeds the wire over the
inboard side of the feeder mechanism make sure you install the drive roller so that the desired groove is towards the
machine!
Release ther drive tension mechanism by rotating the drive tension knob down. Now pass the wire through the wire
guide spring over the top of the groove of the drive wheel. Using your finger to aim the wire throught the second guide
that is at the front of the machine. Push the wire out a few inches or centimeters. Now bring down the top roller
mechanism and raise the tension knob to lock it into place. Adjust the tensionknob so that the pressure on the welding
wire, guarantees the welding wire is not slipping if the wire is blocked, and not continuing to fed the wire, This would
cause a huge mess called a bird’s nest inside the machine.
Roller size: external diameter ∮30mm/ internal diameter ∮10mm/ height 10mm
Guide the wire sticking out the front of the machine into the welding gun cable. Now insert the welding gun cable into the
socket on front panel and screw it in firmly.Unscrew the nozzle and contact tip from the MIG gun and feed the wire
through the cable by pulling the trigger on the gun. To ensure the wire feeds quickly, you can turn tew amperage knob on
the front panel to it’s maximum setting. After the wire successfully fed reinstal install the contact tip and appropriate
nozzle. For fluxed core wire, install a ceramic nozzle, for solid wire install a copper nozzle.

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2.2 MIG & TIG Torch Exploded Diagram -TIG torch is not included in standard accessories
Torch nozzel 1 and contact tip 2 are consumables. Please change when needed.
2.3 Gas Shielded Welding Installation.
①MIG Welding
The gas cylinder containing the carbon dioxide gas, mixture gas or argon gas must be tightly connected to the regulator
or flow meter must to tightly so that there are no gas leaks.
Connect a gas hose between the machine’s rear gas connector and gas regulator or flowmeter with the gas hose clamps
provided. Once again there must be no leaks.
②LIFT TIG Welding
The regulator or flowmeter attched to the gas cylinder containing the argon gas is tightly connected with the gas tube on
torch so that there are no leaks.
2.4 MIG Spool Gun Installation.
1 Open the cover of the wire feeding disc, open the cover of the wire feeding wheel bin, and loosen the

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pressure wheel of the wire feeding mechanism.
2 Send the welding wire to the wire feeding wheel (note that the wire feeding wheel matches the diameter of
the welding wire)
3 Install the welding wire on the shaft beside the wire feeding, and tighten the mounting screws.
4 Press the wire feeding wheel and pressing wheel well, cover the cover of wire feeding bin and the cover of
wire feeding tray
3 Operating Instructions
3.1 Operation Panel Interface
3.2 Welding Operation Instruction
On display
After turning on the poower using the switch on the back of the machine, The Amperage display is 000 and the Voltage
display is 000 when in MIG mode. The Voltage display shows no-load voltage in lift TIG and STICK modes. The actual
output current and voltage are displayed only during welding.
Polarity Selection Procedures
There are two basic ways to configure the welder:
1 Voltage display:Display output voltage only when welding,otherwise 000 is displayed
2 Current display:Display output current only when welding,otherwise 000 is displayed
3
MIG welding torch switch:Adjustment is only effective in MIG mode, it has no effect in STICK, and lift TIG
modes.The welding machine can only be operated with the Spool gun torch in the Spool gun torch mode; The
MIG gun only be used for welding in the MIG torch mode.Please check the switch status when using.
Old version：【3】MIG welding torch switch near the wire feeding mechanism inside the machine
4Mode switch:MIG /STICK /LIFT-TIG functions. In MIG Mode, the button [3] is only effective.it has no effect in
STICK, and lift TIG modes.
5
2T/4T switch.
2T is manual, that is, always press the switch for welding
4T is semi-automatic, that is, pressing the trigger once strikes an arc, when the trigger is released the
machine continues to weld until the trigger is pressed again.
6
Adjust voltage: Adjustment is only effective in MIG mode, it has no effrect in STICK, and lift TIG modes.[2]
The voltage display does not change when adjusting the voltage. You can get very good welding results when
pointing the current[7] voltage[6] knob to the same positions.
7Adjust current: [1] is no change when adjusting the amperage.You can get very good welding results when
pointing the current[7] voltage[6] knob to the same positions.

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Direct Current Electrode Positive (DCEP):The eletrode cable (MMA stinger, MIG gun) connected to the positive (+)
connector on the front panel, The workpiece is connected to negative (-) connector by the work clamp cable. Suitable for
positive wire or stick electrode.
Direct Current Electrode Negative (DCEN):The workpiece is connected to the positive (+) connector on the front panel.
The welding electrode cable (MMA stinger, MIG gun, TIG Gun) is connected to the negative (-) connector pole. Suitable
for negative wire stick electrode.
The polarity is selected according to the welding process requirements of the workpiece, use of incorrect polarity may
cause arc instability, spatter and lack of fusion.
STICK Manual Welding Operation Procedures
Make sure the elctrode cable is connected to the postive fron panel connector. The
working clamp clamps the workpiece and is connected to the negative connector on
thr front panel.
Make sure the [4 Mode Swtich] at Stick Mode.Adjust [7 Adjust current] The welding
current can be changed.The welding current range is 40A to maximum current 150A
adjustment.
Operating Procedures for MIG
Gas Protection Welding-Solid wire
Welding wire Installation. ( Refer to 2.1)
Use the V-groove roller for stainless steel and carbon steel.
Connection of the gas cylinder(Refer to 2.3)
Insert the quick connect end of the MIG Gun selection cable into
the positive connector on the front panel (DCEP).Insert the quick
connect end of the working clamp cable into the negative
connector on the front panel on the machine.Check wire
operation：press torch trigger, the wire feeder will feed the wire through the torch tip. Select MIG mode on the front
control panel(Make sure you are not in SPOOL GUN state). After that, select the right material and diameter you are
welding with. Adjust amperage according your workpiece thickness.
To find the best welding performance and suitable for your welding habits. You may also adjust voltage to build a
perfect welding bead and penetration.
Gasless Welding-flux cored wire
Welding wire Installation.(Refer to 2.1)
Use the proper diameter Knurled roller for flux cored wire.
Insert the quick connect end of the MIG Gun selector cable into
the negative connector on the fron panel of the machine
(DCEN).Insert the quick connect end of the working clamp cable
into the positive connector on the front of the machine.Check wire
operation：press torch switch, the wire feeder will feed the wire
through the torch tip.Select MIG mode on the front control
panel(Make sure you are not in SPOOL GUN state). After that, select the right material and diameter you are welding
with. Adjust amperage according your workpiece thickness.

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To find the best welding performance and suitable for your welding habits. You may also adjust voltage to build a perfect
welding bead and penetration.
Spool gun torch welding
Select spool gun mode on the front control panel or turn on the “Spool gun”switch at MIG mode. (This toggle switch
is in the wire feeding compartment of the machine or near the “Mode”button). Aluminum welding is supported in spool
gun mode.
①Old version The MIG torch switch near the wire feeding mechanism inside the machine
②New version The MIG torch switch is on the front panel of the machine
This machine can be connected to a Spool gun. (the package does not include a spool gun).
The use of spool gun is similar to that of MIG gun, except that the wire is fed through the wire feeding mechanism of the
spool gun itself. In the spool gun mode, the feeding mechanism of the original machine does not work.
Direct Current Electrode Positive (DCEP):The eletrode
cable (MMA stinger, MIG gun) connected to the positive
(+) connector on the front panel, The workpiece is
connected to negative (-) connector by the work clamp
cable. Suitable for positive wire or stick electrode.
Direct Current Electrode Negative (DCEN):The
workpiece is connected to the positive (+) connector on
the front panel. The welding electrode cable (MMA
stinger, MIG gun, TIG Gun) is connected to the
negative (-) connector pole. Suitable for negative wire
stick electrode.
Solid Wire,Welding aluminum Flux Cored Wire
Operation of LIFT TIG function

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Please follow installation instructions to install the TIG torch and working clamp. In Lift TIG welding mode,adjust [7 Adjust
current] the welding amperage can be changed. The welding current range is 30A to maximum current 150A adjustment.
The TIG welding function is for thin workpiece welding or stainless steel welding. Use 100% Argon gas as sheilding gas.
Connect the gas hose with gas tube on torch.Connection of gas cylinder（Refer to 2.3）
Connect the TIG torch on negative connector.
Connect the working clamp cable on positive connector.
Tungsten needle electrode contact workpiece arc striking
Fault display：
Over current, overheating fault display
The welding machine over flow failure display Err 001, at【Multifunctional data display window】display continuously
flashing, The welder does not work properly this moment. Turn off the welder for 1 minutes and restart it, the front panel
normally shows the welding parameters set before the failure. If not successfully recover, please check with supplier.
Failure display of wire feeder
The welding machine overheat failure display Err 002, at【Multifunctional data display window】display continuously
flashing, The welder is overheat, please stop welding and let the machine recover to normal working temperature.
Wire blocking
The welding machine over flow failure display Err 003, at【Multifunctional data display window】display continuously
flashing. The wire feeding is block. Please open the side plate to check on the wire feeder and torch linear.
OC light
When the welding load is overloaded and the output current of the machine is too large, the internal temperature of the
machine will become too high, and the machine fault light will come on. This is normal. The machine will recover after it
cools down and the temperature has returned to normal. If it does not, please shut the machine down and restart it. If the
machine is damaged, the fault light will be on, in this case, the machine needs maintenance, please contact the supplier.
3.3 Polarity Conversion Joint
This machine has the polarity conversion; There are positive and negative connector on the front panel. When using
solid wire with gas sheilding, the polarity selection cable should be connected to the positive connector, the working
clamp cable should be connected to the negative connector; When using flux-cored wire the polarity selection cable
should be connected to the negative connector and the working clamp cable should be connected to positive connector.

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4 Trouble Shooting And Error Checking
Notes:The following operations must be performed by qualified electricians with valid certifications. Before maintenance,
you are suggested to contact local distributor to verify qualification.
Malfunctions Solution
The meter show nothing;
Fan does not rotate;
No welding output
Confirm the power switch is on.
Power supply available for input cable.
Check if the three phase commute bridge is damaged.
There is malfunction occurs in the supplementary power source on control board (contact
dealers).
The meter shows;
Fan works normally;
No welding output
Check if all the sockets in the machine are connected well.
There is open circuit or badness of connect at the joint of output terminal.
The control cable on the torch is broken off or the switch is damaged.
The control circuit is damaged.(contact to dealers)
the meter shows;
Fan works normally;
Abnormal indicator lights.
It might be over-current protection, please turn off the power switch; restart the machine
after the abnormal indicator light winked.
It might be overheating protection, please wait for about 2-3 minutes until the machine
renew without turn off the power switch.
It might be multifunction of inverter circuit. (contact dealers)
Even if the machine comes up with abnormal phenomenon such as unable to weld, arc unstable or bad welding effect,
it is still early to judge that there is malfunction in the machine.
The above-mentioned abnormal phenomenon may be caused by some reasons. For example: tight parts loosen,
forgetting to switch on, wrong set up, cable broken and gas rubber pipe cracked, etc. Therefore, please test and inspect
these factors before deliver it back to the factory because a large number of troubles may be easily solved probably.
For this reason, an initial diagnosis list for general welding troubles is shown below. A trouble happened may be found in
the column of “Abnormal items” on up-right of the list, please inspect and maintain for the corresponding items which
have “〇" mark in the column according to the following list respectively.
Initial problems diagnose
Abnormal Items
Area and Item to be Inspected
and Maintained
No arc Starting No Gas out No Wire Feeding Bad Arc Ignition Unstable Arc Dirt on Edge of Weld bead Wire Stick to material Wire Stick to Conductive Tip Blowhole Formed
Distribution Boxes (Input
Protection Devices)
Turn on power supply or not?
Fuse burnt out
Connection joint loose
〇
〇
〇
〇
〇
〇
Input Cable
Examine whether the cable is cut off.
Connection joint loose
Over heat
〇
〇
〇
〇

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Welding Power Operation
Turn on power supply or not?
Phase Lacking
〇
〇
〇
〇
〇
〇
〇
〇
Gas Cylinder and Gas
Regulator
Turn on gas supply
Residual Amount of Gas in the cylinder
Set value for flow
Connection joint loose
〇
〇
Gas supply hose (the whole
line from the high pressure
cylinder to the weld gun)
Connection joint loose
Gas hose damaged
〇
Wire Feeding Device
Wire feeding wheel does not match with the
diameter of wire in texturing tube
Crackle on wire feeding wheel, groove blocked up or
defect
Too tight or loose of the handle
Wire powder accumulated on the inlet of SUS pipe
〇
〇
〇
〇
〇
Weld Gun and Cable
1. Weld gun cable rolled up or over curved
2. Adaptability of conductive tip, wire feeding pipe
and cable diameter Worn, blocked up or
deformation, etc.
〇
〇
〇
〇
Body of weld gun
Loose connection of conductive tip, nozzle and
nozzle contactor
Contactor of weld gun body is not plunged in or
tightened well
〇
〇
Power supply cable of weld
gun as well as cable of
switch control
Break off (bending fatigue)
Damaged by weighted drop
〇
〇
〇
〇
〇
Surface Condition of Parent
material and length that
wire stretches out
Oil, dirty, rust and paint residues
Too long length of wire stretched out
〇
〇
〇
〇
〇
Output Cable
Cross-section of cable that connects to parent
material is not enough
Loose connection of （+）,（-）output cable
Bad electric conductivity of parent material
〇
〇
〇
Lengthened Cable
Cross-section of cable is not enough
It is rolled up or folded
〇
〇
〇
〇
Work Condition for Welding
Welding current, voltage, angle of weld gun, welding
rate and wire length stretched out should be
confirmed once again
〇
〇
〇
〇
〇

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5 Daily Maintenance And Checking
5.1 Daily Maintenance
Remove dust regularly with dry compressed air. If the welding machine is used in surroundings with heavy smoke
and polluted air, it is necessary to remove dust at least one time one month.
The pressure of compressed air shall fall to required level to prevent damage to small components in the machine.
Examine inside electric joints and ensure perfect contact (Especially plugs and sockets). Fasten the loosing joints.
In case of oxidation, remove oxide film with sand paper and connect again.
Prevent water from entering into the machine and prevent the machine from getting moist. If any, blow and dry.
Measure the insulation with megohmmeter to make sure it is qualified to use.
If the welding machine is not used for a long time, pack the machine in original package and store in dry
surroundings.
Every time the wire feeder operates for 300hours, grind the electrical carbon brush and clear up the armature
commutator. Rinse speed reducer, apply 2# Molybdenum Disulfide lubricant to the turbine, whirlpool rod and
bearing.
All the maintenance and testing must be carried out when the power supply is totally cut off. Please make
sure the power is off before opening the closure.
5.2 Daily Checking
WELDING POWER SUPPLY
Position Checking keys Remarks
Control panel
Operation, conversion and installation of the switch
Check the state of the power indicator light
Lead to unstable arc and
wire sending
Cooling fan Check if the fan state and the sound is normal or not
Clean the residue and
check the reason and
solve it
Power part
Check if there is abnormal liberation and sound when the power is on
Check if there is smell when the power is on
Whether the outside color change or get warm
Outer parts
Whether the wire feeder pipe is broken, and the connector is loosen
Whether the outer shell or other connect parts are loosen
WELDING TORCH
Position Checking keys Remarks
Loophole
If installment fixed, the front distorted Reason for air hole.
Attach splash or not. Reason for burning the torch.
（can use splash-proof material ）
Electric hole
If installment fixed Reason of torch screw thread damage
Damage of its head and hole blocked or not Reason of unstable arc and broken arc
Wire sending
tube
Check the extended size of the pipe
Have to be changed when less than 6mm, when
the extended part too small, the arc will be
unstable.

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Wire diameter and the tube inner diameter
match or not
Reason of unstable arc, please use the suitable
tube.
Partial winding and extended Reason of poor wires sending and unstable arc,
please change.
Block caused by dirt in the tube, and the
remains of the wire plating lay.
Reason of poor wire sending and unstable arc,
(use kerosene to wipe or change new one.)
Wire sending tube broken O circle wear out Pyrocondensation tube broken, change new tube.
Change new O circle
Gas bypass
Forget to insert or the hole blocked, or
different factory component.
May lead to vice (splash) because of poor gas
shield, torch body get burned (arc in the torch),
please handle.
CABLE
Position Checking keys Remarks
Output cable
Wearing-out of the cable insulated material
Cable connecting head naked (insulation
damage), or loosen (the end of power supply, and
cable of main material connecting point)
For life security and stable welding, adopt
suitable method to check according to
working place
Simple check daily
Careful and in-depth check on fixed period
Input cable
If the connection between the plug and the power
socket is firm
If the power input end cable fixed
If the input cable is worn out and bares the
conductor
In case of leakage and to ensure safety,
please do perform daily checking
Earth cable
If the earth cable that connects the main part is
broken and connects tightly
5.3 Welding Problems And Solutions
The phenomenon listed below may happen due to relevant accessories used, welding material, surroundings and power
supply. Pleas improve surroundings and avoid these problems..
Arc starting difficulty. Arc interruption happens easily:
Examine whether the working clamp has good contact with the work pieces.
Examine all cable connections and make sure they are tight.
The output current fails to reach rated value:
The deviation of power voltage from rated value may cause the output current to not achieve the adjusted value. When
the power voltage is lower than rated value, the maximum output current may be lower than rated value.
The current can not keep stable during operation:
This situation may relate to the following factors:
The voltage of electric power network changes;
Serious interference from electric power network or other electric facilities.
Porosity in welds:
Examine whether the gas supply circuit has any leaks.
Examine whether there is contaminants such as oil, dirt, rust, paint etc. on the surface.

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6 Attention
The precautions listed in this manual are intended to ensure the safe use of the machine and to protect you and others
from harm and injury.
The design and manufacture of the welding machine power take full account of the safety, be sure to comply with the
precautions in this manual, otherwise it will cause serious accidents.
Wrong use of welding machine power supply will cause the following kinds of different degrees of harm and injury.
Please read this manual carefully to avoid or minimize such harm.
6.1 Welding Environment And Safety
Working surroundings
(1) Welding should be carried out in dry surroundings. The air humidity level should not be higher than 90%.
(2) The temperature should be between -10C to 40C.
(3) Don’t use the welding machines in sunshine or rain. Keep it dry.
(4) Don't use the machines in the places of dust or corrosive air.
(5) MIG welding should not be carried out in places with god ventilation.
Safety norms
Over-voltage, over-current and over-heating circuits are built into the welding machine. It will stop working automatically
when the input voltage, output current or internal temperature exceed the rated value. But if the machines are
excessively used, such as with input voltage higher than the rated, the machine might be damaged. Please pay close
attention to the following matters.
Keep good ventilation!
The welding machines work with high welding current.Normal air flow can’t provide the requirement of heat dissipation.
So the fans are installed as cooling system to ensure stable performance.
Make sure the ventilation windows are not covered or blocked. The distance between the machines and things around it
should not be less than 0.3m. Good ventilation is good for welding performance and operational life.
Never over load!
Check the maximum rated current (according to the Duty Cycle chosen). Make sure the welding current is never higher
than the rated value. Over current running will obviously shortens the operational life, and can even damage the
machine.
Never over voltage!
The Input Voltage can be found in Technical data diagram.The auto-compensation function will keep the welding
current in the rated range. If the input voltage exceed the permissible value, the machine will be damaged. Users should
take protective measures in advance to avoid it.
Make sure earth connected before operation.
On the rear panel of welding machine, a screw for earth connecting would be found. It must be ground connected with
cable whose section is bigger than 6mm2 before operation, to avoid accidents caused by static or electricity leak.

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6.2 Symbol Definition:
This Manual contains symbols as blow, please refer to their means expressed
Symbol Description
Touching any live electrical part may cause fatal electric shock or burns.
Welding fumes and gases are hazardous to health.
Working in tight places can cause suffocation due to lack of oxygen.
Splashes and hot finished base metal can cause a fire.
Poor cable connection, steel and other parent metal side current loop is not in full contact, it will
cause heat conduction and cause a fire.
Do not weld on containers containing flammable substances as this may cause an explosion.
Do not weld sealed containers, such as tanks (boxes), pipes and other devices, otherwise it will
rupture.
Arc light can cause eye irritation or skin burns and other body injuries.
Spatter and welding slag can burn eyes or burn the skin.
Dumping cylinders can cause injury.
Cylinders with high pressure gas, wrong use can cause high pressure gas spouts, causing
accident.
Do not place fingers, hair, clothing, etc. near rotating parts such as cooling fans
The welding wire is shot from the torch and can stab eyes, face and other exposed parts of the
body
When lifting, staffs shall not be standing under the welder, or standing in front of the movement,
to prevent the welder falling injured.
To avoid accidents, please observe the following rules:
Do not use this machine for other works but welding.
The construction of the input power source, the setting of the installation site, the use of high-pressure gas, storage
and disposition, the storage of the workpiece after welding and the disposal of waste shall be carried out in
accordance with the relevant regulations.
Irrelevant staffs do not enter the welding work place.
Symbol Definition
Texts beginning with this symbol indicate potentially serious dangers and, if not avoided,
could result in serious accidents that could result in death or serious injury to personnel.
Texts beginning with this symbol indicates a potentially hazardous situation that, if not
avoided, could result in minor injury to persons or property damage.
Texts beginning with this symbol indicate potential risks which, if not avoided, may cause
malfunction or damage to the equipment.

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Pacemaker wearers should consult with their doctor before operating.
Please let qualified people or persons which with relevant knowledge and skills to install, operate, maintain and
repair the welder.
To ensure safety, please understand the contents of this manual.
To avoid electric shock, please observe the rules：
Do not touch live parts.
Let relevant technicians connect the welder and base metal grounding correctly.
It must switch off the power when installation, maintenance, and waiting 5 minutes before operation. Capacitors can
be charged, even if the power has been cut off, but also to ensure that the capacitor is not charged voltage, and
then operate.
Do not use cables that have insufficient cross-sectional area, damaged insulation sheath, or exposed conductors
In the cable connection, please ensure the insulation.
Do not use the welder when the case opened or removed.
Do not use insulated gloves which is damaged or damped.
Please use safety net when working at height.
Regular maintenance and repair, and please repair the damaged parts before using.
When not in use, turn off all input power.
When using AC arc welder in narrow places or higher places, please observe the relevant national and local
standards and regulations.
To prevent fire and explosion, please observe the following rules：
Do not place flammable materials near the welding place.
Do not welding near flammable gas.
Do not place the hot finished base material close to flammable material.
When welding in the patio, on the ground and the wall, please remove the combustible materials on the back.
The cable connected with the base metal as close as possible to the welding spot.
Do not welding gas-filled trachea, seal groove, etc.
Place a fire extinguisher near the welding work site to prevent the fire from happening.
To avoid breathing these fumes and gases hazardous to health, please use the required
protective equipment.
To prevent accidents such as gas poisoning and suffocation, please use the prescribed exhaust facilities and use
respiratory protection equipment.
To prevent welding fumes and other dust damage and poisoning, please use the prescribed local exhaust
equipment and respiratory protective equipment.
When working in cabinets, boilers, cabins, etc., CO2, which is heavier than air, stays at the bottom. To prevent lack
of oxygen, please fully ventilate and use an air respirator.
When working in a confined area, please accept the inspection of the supervisory staff, and fully breathe and use
respiratory protection equipment.

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Do not weld in the degreasing, cleaning, and spray operation areas.
When welding plated or coated steel plates, harmful fumes and gases are generated. Please use respiratory
protection equipment.
To avoid harm to you and others caused by arc, splashing, welding slag, noise, etc., please
use the specified protective equipment.
When using welding or supervising welding, use protective equipment with sufficient shading.
Please wear protective glasses.
Wear protective equipment such as leather gloves for protection from welding, long-sleeved clothes, feet, and
aprons.
Set up a protective barrier around the welding site to prevent the arc from endangering others.
To prevent the dumping, cracking, etc. of gas cylinders, please observe the following
regulations:
Please use the cylinder correctly as specified.
Please use the gas regulator supplied with our company or recommended.
Please read the gas regulator instruction manual before use, please observe the precautions.
Use a dedicated cylinder holder and related parts to secure the cylinder.
Do not leave cylinders exposed to high temperatures or sunlight.
When opening the cylinder valve, do not approach the gas outlet on the face.
When the cylinder is not in use, attach the cylinder cap.
Do not place the welding torch on the cylinder. The electrode must not touch the cylinder.
Contact with rotating parts can cause injuries. Please observe the following rules:
Do not use the welder with the case removed.
Persons with professional qualifications or relevant knowledge and skills can install, operate, overhaul, and
maintain the welder.
Do not put fingers, hair, clothing, etc. Close to the cooling fan and other rotating parts.
Wire ends can cause injuries. Please must observe the following rules:
When confirming whether to feed the wire, do not look into the hole of the contact tip. Otherwise, the wire will shoot
to hurt the eyes and face.
When manually feeding the wire or pressing the torch switch, do not place the end of the torch close to the exposed
part of the body such as eyes or face.
In order to work better and maintain the power of the welder, please must observe the
following regulations:
If the power source of the welder is placed on an inclined plane, attention should be paid to preventing it from
falling.
It is forbidden to use welding power for the thawing of pipes.
When the welding power source is lifted using a forklift, it should be mounted sideways to prevent tipping.
When the welding power supply is lifted by a crane, the cable should be tied at the lifting ring. The angle between

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the cable and the vertical should not exceed 15 degrees.
When the welder is equipped with gas cylinders and wire feeders, these two devices should be taken from the
power supply and the welder level should be kept as far as possible. When moving the gas shielded welding
machine on the ground, be sure to When the welding power supply is lifted by lifting fork lift, to prevent dumping,
please install from side.
When the welding power supply is hoisted, the cable shall be attached to the hanging ring, and the Angle between
the cable and the vertical direction shall not exceed 15 degrees.
When the welding machine is equipped with gas cylinder and wire feeder, the two devices should be connected to
the power supply and the welding machine level is maintained as far as possible. When moving the gas shielded
welding machine on the ground, be sure to fix the cylinder with a belt or chain to prevent the dumping.
If the wire feeding machine is used for welding, make sure it is firm and insulated.。
If the device has a strap or handle, remember that it is only suitable for hand use. It is prohibited to use crane,
forklift or other mechanical hoisting.
Attention to electromagnetic interference
Additional precautions may be required when welding power is used in a local area.
Before installing the welding equipment, the user should assess the potential electromagnetic problems in the
installation environment area, as shown below:
(1) The upper, lower and adjacent power cables, control cables, signal cables and telephone cables of the welding
equipment;
(2) Radio and television transmitting and receiving devices;
(3) Computer and other control equipment;
(4) Safety identification equipment, such as the monitoring of industrial equipment
(5) People Health conditions such as cardiac pacemakers and hearing AIDS;
(6) Equipment used for calibration and measurement;
(7) Interference of other equipment in the environment; Users shall ensure that other equipment in the environment is
compatible with the environment; This may require additional protection;
(8) The actual situation of welding or other activities carried out.
Users should comply with the following items to reduce radiation interference:
(1) According to the manufacturer's suggestion, the welding equipment should be connected to the main supply line;
(2) According to the manufacturer's suggestion, welding equipment should be maintained routine;
(3) The welding cables should be as short as possible so that they are close to each other and close to the ground;
(4) All the metal components of the welded assembly and its adjacent components shall be subject to safety
verification;
(5) The workpiece should be kept well grounded;
(6) Other cables and equipment in the environment can be selectively shielded and protected, thus reducing the impact
of interference. The welding equipment can be completely shielded in special occasions.
The user should be responsible for the interference caused by welding.

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7 Appendix ⅠWelding Parameter List
The values listed in the following table are the general specification values under standard condition.
Plate
thickness
（mm）
Wire
diameter
(mm)
Interval
(mm) Current
（A）
Voltage
（V）
Welding
speed
(cm/min)
Wire
extension
(mm)
Gas flow
rate
(L/min)
Square butt welding
Low welding speed
0.8 0.8,0.9 0 60～70 16～16.5 50～60 10 10
1.0 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
2.0 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
1.2 1.2～1.6 220～260 24～26 45～50 15 15～20
1.2 1.2～1.6 300～340 32～34 45～50 15 15～20
1.2 1.2～1.6 300～340 32～34 45～50 15 15～20
High welding speed
0.8 0.8,0.9 0 100 17 130 10 15
1.0 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 19．5130 10 15
2.0 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
（mm）
Wire
diameter
（mm）
Current
（A）
Voltage
（V）
Welding
speed
（cm/min）
Wire
extension
（mm）
Gas flow
rate
（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