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This manual is designed to help you get the most out of your ARCCAPTAIN products.
Please save this manual and take time to read the safety warnings and precautions,
assembly, operating, inspection, maintenance. They will help you protect yourself against
potential hazards on the worksite. Failure to do so can result in serious injury!
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CONTENTS
1. SAFETY........................................................................................................................................ 1
1.1 General Safety..........................................................................................................................1
1.2 Electrical Safety
........................................................................................................................
1
1.3 Fire Safety
.................................................................................................................................
2
1.4 Fumes and Gases Safety
.......................................................................................................
2
1.5 Arc Rays and Noice Safety.....................................................................................................2
1.6 Gas Shielded Welding – Cylinder Safety............................................................................. 3
1.7 Additional Safety Information................................................................................................. 3
2. PRODUCT INTRODUCTION ........................................................................................3
2.1 Function Overview ........................................................................................................ 3
2.2 Package ........................................................................................................................ 4
2.3 Technical Parameters ................................................................................................... 4
3. OPERATION CONTROL AND INSTRUCTIONS ........................................................5
3.1 Panel Instruction ........................................................................................................... 5
3.2 Multi-function digital operation panel............................................................................6
3.3 Wire feeding Description ...............................................................................................9
3.4 Nameplate...................................................................................................................10
4. INSTALLATION AND CONNECTION ........................................................................ 10
4.1 Selecting the Welding Wire .................................................................. ......................10
4.2 Checking the Torch Accessories .................................................................................11
4.3 Installing the Welding Wire .........................................................................................12
4.4 Wire Feeding Installation ............................................................................................13
5. Operation for MIG Welding .......................................................................................14
5.1 Connection..................................................................................................... ......................14
5.2 Input Power Connection.....................................................................................................15
5.3 Wire Stick Out................................................................................................ ......................16
5.4 Operation........................................................................................................ ......................17
6. Operation for Spool gun.................................................................................................... 19
6.1 Set Up Spool gun.......................................................................................... ......................19
6.1 Connection..................................................................................................... ......................20
6.2 Input Power Connection
...............................................................................
......................21
6.3 Wire Stick Out
................................................................................................
......................22
6.4 Operation......................................................................................................... .....................23
7. Operation for MIG Flux-Cored Welding ........................................................................24
7.1 Connection
.....................................................................................................
......................24
7.2 Input Power Connection
...............................................................................
......................25
7.3 Wire Stick Out
................................................................................................
......................26
7.4 Operation......................................................................................................... .....................27
8. Operation for MMA and TIG ....................................................................................28
8.1 MMA Welder Cable Connection ........................................................... ......................28
8.2 MMA Welder Operation ........................................................................ ......................29
8.3 MMA Welding parameters table ........................................................... ......................30
8.4 Lift TIG Welder Cable Connection ..............................................................................31
8.5 Lift tig Welder Operation ...........................................................................................33
8.6 Lift TIG Welding parameters table ..............................................................................35
9. Engineer Mode .........................................................................................................35
10. MIG Basic Welding Technique ............................................................................. 37
10.1 Basic MIG Welding .............................................................................. .....................37
10.2 Feeding speed ..........................................................................................................49
11. MAINTENANCE ...........................................................................................................49
11.1Routine and Periodic Maintenance..................................................................................40
11.2Daily maintenance
........................................................................................
......................40
12. TROUBLESHOOTING
..........................................................................................................
41
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1.SAFETY
! WARINING READ ALL SAFETY WARNINGS BEFORE WORKING!
Failure to follow the warnings and instructions may result in electric shock, fire and/or
serious injury. Save all warnings and instructions for future reference!
If you encounter any issues during installation or operation, refer to the relevant sections in this
manual for inspection. If you're still unsure or unable to resolve the problem, please contact
ARCCAPTAIN professional support.
1.1 General Safety
Do NOT use the welder if the switch does not turn it on and off.
Disconnect the plug from the power source before making any adjustments, changing
accessories, or storing the welder.
Ensure the switch is off before connecting to power or moving the welder to prevent
accidental starting.
Always maintain and use safety guards, covers, and devices properly.
Keep hands, hair, clothing, and tools away from moving parts like V-belts, gears, and
fans.
Follow these instructions and consider working conditions when using the welder and
accessories.
This manual may not cover every possible situation. It's important for the operator to
use common sense and caution while using this product.
1.2 Electrical Safety
! WARINING BEWARE OF ELECTRIC SHOCK!
DO NOT weld in a damp area or come in contact with a moist or wet surface.
DO NOT modify any wiring, ground connections, switches, or fuses in this welding
equipment.
DO NOT come into physical contact with any part of the welding current circuit,
including the workpiece, ground clamp, electrode or welding wire, and metal parts on
the electrode holder or MIG gun.
DO NOT connect the ground clamp to electrical conduit, and DO NOT weld on electrical
conduit.
NEVER leave the Welder unattended while energized. Turn off the power if you have to
leave.
DO NOT attempt to plug the welder into the power source if the ground prong on INPUT
POWER CABLE plug is bent over, broken off, or missing.
DO NOT alter INPUT POWER CABLE or plug in any way.
People with pacemakers should consult their physicians before use. Magnetic field can
make cardiac pacemaker a bit wonky.
! WARINING REPLACING COMPONENTS CAN BE DANGEROUS!
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Only experts should replace machine parts. Avoid dropping foreign objects into the
machine during component replacement. Ensure correct wire connections after
replacing PCBs to prevent property damage.
1.3 Fire Safety
! WARINING BEWARE OF FIRE HAZARD!
Place the machine on non-combustible surfaces to prevent fires.
Ensure no flammable materials are near the working area to reduce fire risk.
Avoid installing the machine near water sources to prevent water damage.
Always weld/cut materials in a dry environment with humidity below 90% and maintain a
working temperature between -10°C and 40°C.
When welding/cutting outdoors, ensure shelter from sunlight and rain, keeping the
machine dry at all times.
Do not operate the machine in dusty or chemically corrosive environments.
Remove or secure all combustible materials within a 35 feet (10 meters) radius of the
work area. Use fire-resistant material to cover or seal open doorways, windows, cracks,
and other openings.
Improper use can lead to fire or explosion. Avoid flammable materials near the working
area, keep a fire extinguisher nearby with trained personnel, refrain from cutting closed
containers, and do not use the machine for pipe thawing.
1.4 Fumes and Gases Safety
! WARINING SMOKE CAN BE HARMFUL TO YOUR HEALTH!
Keep your head away from the smoke while cutting to avoid breathing in harmful gases.
Ensure the working area is well-ventilated with exhaust or ventilation equipment during
cutting.
Only work in a confined area if it's well-ventilated, or wear an air-supplied respirator.
1.5 Arc Rays and Noice Safety
! WARINING
Arc radiation can harm eyes and skin; excessive noise can damage hearing.
Use certified welding eye protection with at least a number 10 shade lens rating.
Wear leather leggings and fire-resistant shoes or boots; avoid clothing that can catch
sparks or molten metal. Do not touch hot workpiece with bare hands.
Keep clothing free of flammable substances and wear dry, insulating gloves and
protective clothing.
Wear an approved head covering and use appropriate welding attire.
When welding overhead or in confined spaces, use flame-resistant ear plugs or ear
EXCESSIVE NOISE DOES GREAT HARM TO HEARING!
ARC RADIATION MAY HURT YOUR EYES AND BURN YOUR SKIN！
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muffs.
Wear ear covers or other hearing protectors when cutting.
1.6 Gas Shielded Welding – Cylinder Safety
! WARINING CYLINDERS CAN EXPLODE WHEN DAMAGED!
Never weld on a pressurized or closed cylinder.
Avoid letting the electrode holder, electrode, welding torch, or welding wire touch the
cylinder.
Keep cylinders away from all electrical circuits, including welding circuits.
Always keep the protective cap on the valve except when the cylinder is in use.
Use only the correct gas shielding equipment designed for your specific type of welding,
and maintain it properly.
Protect gas cylinders from heat, physical damage, slag, flames, sparks, and arcs.
Always follow proper procedures when moving cylinders.
Do not install the machine in an environment with explosive gas to avoid an explosion.
1.7 Additional Safety Information
Use only the supplied power cord for this welder or an identical replacement cord. Do
not install a thinner or longer cord on this Welder.
Maintain labels and nameplates on the Welder. These carry important information.
Ensure the ground clamp is securely connected to the workpiece during welding.
Pressing the gun switch when welding or cutting.
When disposing of the cutting machine, please note the following:
Burning electrolytic capacitors on the main circuit or PCB board may cause explosions.
Burning plastic components such as the front panel may produce toxic gases. Dispose
of it as industrial waste.
2. PRODUCT INSTRUCTION
2.1 Function Overview
This is MIG200 Fit, with advanced technology, perfect function and high performance. This ultra-portable
welding system is suitable for various application needs.
6 in 1 Multi-functions: Gas MIG/Gasless MIG/MMA /TIG/Spot welding/Spool Gun are available.
Synergic MIG: Automatic matching of the voltage & wire feeding speed by adjusting wire
diameter, material.
Separated MIG：Output voltage and wire feed speed adjustment，meet your welding requirement.
Accurate Preset Parameter: 10 groups parameter can be set and storage for each welding mode.
2T/4T: Realize wide application, easy welding and continuous long-term welding.
Hot Start: Make the arc ignition in MMA welding easier and more reliable.
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Arc Force: Obviously improve the performance of the machine contribute to long-distance welding.
Anti-stick: Improve welding performance to prevent stickiness.
VRD: Reduce the risk of electric shock to ensure operator’s safety.
Suitable for 2lb/10lb MIG wire.
2.2 Package
Name Specification Quantity (pcs)
Welding machine MIG200 Fit 1
MIG welding torch 10ft 1
Torch accessories Conduct tips 2
Ground clamp 10ft 1
Electrode holder 10ft 1
Gas hose 10ft 1
Adapter 220V to 110V 1
Operator’s manual For MIG200 Fit 1
2.3 Technical Parameters
Technical Parameter Units
Model
MIG200 Fit
Rated input voltage V AC110V±15% 50/60HZ AC220V±15% 50/60HZ
Rated input power KVA 4.9 6.9
Rated input current A 44.2 31.4
Welding current range (MMA) A 20～140 20～200
Welding current range (TIG) A
20～140 20～200
Welding voltage range (MIG)
A
30～140 30～200
V 11～22 11～26
Rated duty cycle % 60 60
Open circuit voltage V U
0
: 64 U
r
:15.5
Overall efficiency % 85
Enclosure class IP 21S
Power factor COSφ 0.72
Insulation class H
Standard ANSI/NEMA/IEC 60974-1
Noise db
＜70
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Dimension inch 18.5 x14 x 7.9
Weight lb 21.6lb
Applicable electrode/wire inch
1/16”-1/8”
0.023”/0.030”/0.035”
1/16”-5/32””
0.023”/0.030”/0.035”/0.040”
Figure 1 Size
3. OPERATION CONTROL AND INSTRUCTIONS
3.1 Panel Instruction
Part Picture
1. Operating area
2. Euro connector for MIG torch
3. "+" output terminal
4. Polarity changeover plug
5. Socket for Spool gun
Hole 1: Spool gun power source ”+”
Hole 2: Spool gun power source ”-”
Hole 3~4: Null
6. "-" output terminal
Figure 2
Figure 3 Socket for Spool gun
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7. Power switch
8. Input power cable
9. Gas inlet
10. Cooling Fan
3.2 Multi-function Digital Operation Description
Figure 5 operation panel
Detailed description for operation panel functions
：
NO. Picture Description Item Function
1
+
Parameter setting
and display area for
spot welding time,
parameter group
storage, voltage
Parameter switch button
Spot welding time LED
Parameter group storage LED*
Voltage parameter LED
Parameter LED display
Figure 4
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Input voltage
Input voltage is 110V
Input voltage is 220V
2
VRD, feed speed
and current
VRD LED
Wire feed speed LED
Current parameter LED
Parameter LED display
3
+
Synergic selection
button
Switch button for “synergic” and
“separated” *
MIG “synergic”LED
The LED is on when the machine is in
“synergic”
4
+
Welding process
selection area
Welding process selection button
MMA LED
Lift TIG LED
MIG LED
MIG spool gun LED
5
+
MIG operation mode
selection area
MIG operation mode selection button
2T LED
4T LED
Spot welding LED
6
+
MIG diameter
selection area
MIG diameter selection button
Φ0.023 inch wire diameter LED
Φ0.030 inch wire diameter LED
Φ0.035 inch wire diameter LED
Φ0.040 inch wire diameter LED
7
+
MIG material
selection area
Material selection button
Steel(carbon steel) + CO
2
100%
+ER50S-6/ER70S-6
Steel(carbon steel) + Ar80% CO
2
20%
+ER50S-6/ER70S-6
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FCAW+gasless+E71T-GS
CrNi(stainless steel) + Ar98% CO
2
2% +
ER308
AlMg(Aluminum-magnesium alloy) +
Ar100% + ER5356
8
Voltage and spot
welding time
adjustment knob
Subtle adjustment on welding voltage in
MIG “synergic”mode
Welding voltage adjustment in MIG
“separated”mode
In MIG “spot welding”mode, press switch
button and select “S” for spot
welding time adjustment.
9
Current and wire
feed speed
adjustment knob
Welding current adjustment in MIG
“synergic” mode
Wire feed speed adjustment in MIG
“separated” mode
Welding current adjustment in MMA mode
Welding current adjustment in TIG mode
*VRD switch
Please refer to 9.Engineer Mode
* Parameter group
“ ”, function of parameter group storage and usage, is in support of ten parameter group
storage“0~9” with one group covering all adjustable parameters on the machine panel, including welding
mode and the related conditions and settings. Prior to any other parameters, the parameter group will
automatically save the adjusted parameters(save after keeping the same parameters for 20S).The
parameter group keeps the last used parameters when the machine is turned on again.No designated
button for storage and no manual operation for parameter storage and usage.It is easy to use parameter
group. Press the parameter switch button , turn on the parameter group “ ” LED, and switch
parameter groups by encoder “ ” . Select the parameter group and work with the related parameters,
and the group will automatically save the adjusted parameters.
* MIG welding mode “Synergic” and “separated”
There are two MIG/MAG welding mode, “synergic” and “separated”, for welding specification
adjustment:
Synergic: Current and voltage settings vary with different welding wire, wire diameter and gas; and
also at the same welding current, wire feed speed and synergic voltage may differ; the welder will
auto-match preset current and welding voltage, and users can adjust the inductance to the standard
position according to the process requirements.
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In synergic mode, the welder panel will display preset current on the right LED and preset voltage on
the left LED. The synergic parameter database will auto-match the voltage based on the preset current,
with adjustment range of synergic voltage ±3.0V.
This MIG mode is suitable for unskilled welders
Separated: No relation between wire feed speed and voltage adjustment, and users need to set
values separately.
This MIG model is suitable for skilled welders
Attention
Attention! Please select welding functions according to welding requirements.
During welding, choose proper welding process and parameters according to
the technology requirements of workpiece. With improper welding process
and parameters, there will be unstable arc, excessive spatter and wire and
electrode sticking during welding.
Current display shows actual welding current, while voltage display shows actual welding voltage during
welding. Below is display in standby:
Welding process Voltage display Current display
MMA
Open circuit voltage or
VRD voltage（V）
Preset current value（A）
TIG
Open circuit voltage or
VRD voltage（V）
Preset current value（A）
MIG
Preset voltage value（V） Preset wire feed speed（m/min）
※During MIG welding, actual welding current is displayed when current knob is not rotated, preset wire
feed speed is displayed when current knob is rotated.
3.3 Wire Feeding Description
Part name Function Picture
1. Feed
Tensioner
Fixed the Idler Arm and adjusts the
pressure on the wire
Figure 6 Inside wire feeder
2.Idler Arm
Press down on the welding wire
3. Wire Inlet
Liner
Guide the welding wire into the wire
feeder
4. Feed Roller
V0.8-0.9 feed roller,Transfer welding wire
5. Wire Spool
Fixed welding wire spool
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3.4 Nameplate
On the machine, there is a plate that includes all the operating specifications for your new unit. The serial
number of the product is also found on this plate.
Figure 7 Nameplate
4. INSTALLATION AND CONNECTION
! WARINING BEWARE OF ELECTRIC SHOCK!
Check and follow the instructions listed in the “Safety” section of this manual.
! WARINING DO NOT set up without SWITCH OFF !
4.1 Selecting the Welding Wire
This welder is compatible with 2lb or 10lb spools of 0.023", 0.030", 0.035", or 0.040" MIG
wire. Using thicker wire will not improve welding performance on thicker materials, nor will it
increase deposition rate. Additionally, it may strain your AC power source.
Matching table of relation between welding wire, diameter, shielding gas, material
and wire feeding roll：
In synergic mode, different welding wire, diameter, shielding gas, material and wire feeding roll have
corresponding matching relationship as below table. Please select correct settings to achieve optimal
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welding performance.
Function
Item
Fe CO
2
Fe MIX Flux CrNi AlMg
MATERIAL
STEEL STEEL FLUX CORED STAINLESS ALUMINIUM
WIRE TYPE ER70S-6 ER70S-6 E71T-GS ER308 ER5356
DRIVE ROLLER
V GROOVE V GROOVE KNURLED V GROOVE U GROOVE
POLARITY DCEP DCEP DCEN DCEP DCEP
GAS TYPE
100%CO
2
20%CO
2
+80%Ar NO GAS 2%CO
2
+98%Ar 100%Ar
NOTE: Oxidized welding wire can affect welding results.
If you find rust on a wire spool, it's best to throw it away. But before you do, unwind a bit of
wire to see if the rest is still good. If it's also rusty, get rid of the whole spool.
4.2 Checking the Torch Accessories
! WARINING DO NOT set up without SWITCH OFF !
Before welding, verify that the contact tip size in your MIG torch matches your welding wire
type. Do as following steps.
Description Picture
1. Continuously rotate the nozzle clockwise, as if pulling it
upwards. Since the nozzle is spring-loaded internally, some
force is required to remove it.
NOTICE: ONLY TURN CLOCKWISE.
Figure 10
2.Use a wrench to turn the tip of the contact nozzle
counterclockwise. While doing so, ensure to steady the torch
with one hand. Removing the torch might be difficult if it's not
stabilized.
Figure 11
3.Checking the size number on the contact tip. The original machine is equipped with 0.035” type.
If not confirmed with your welding wire, change it.
4. Replace the nozzle in counterclockwise
Figure 12
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4.3 Installing the Welding Wire
NOTE: Turn machine power switch to the OFF position before
working inside the wire feed enclosure. Make sure that the wire
feed drive roll and the contact tip of the gun match the diameter
and type of wire used.
NOTE: DO NOT unhook leading end of the wire! It will prevents scattering the entire
coil of wire.
Description Picture
1.Pull up on the Door Latch, then open the Door. Then you will
see Wire Spool and wire feeder.
Figure 13 Door latch
2. Start to install the wire:
Turn counterclockwise to remove the spool knob.
Spring
Spool
Plate
Spool
Spindle
Spool
Knob
Figure 14
Wire
Spool
Welder
Wall
Wire must unwind in this direction
3.Remove the spool plate, then spool spindle will be exposed.
4.Place the wire spool over the spool spindle.
NOTICE:
To prevent wire feed problems, set the leading end of
spool wire towards to wire inlet liner (refer to the picture),
so that it will unwind counterclockwise.
NOTICE:
To prevent welding wire to unravel and unspool which can
cause tangling and feeding problems, DO NOT release the
wire before spool knob replace.
5.Replace the spool plate back on the spool spindle.
6.
6.Replace the spring and spool knob over the spool plate, then
turn the spool knob clockwise to tighten.
NOTICE:
If Wire Spool can spin freely, Knot is too loose. This will
cause the welding wire to unravel and unspool which can
cause tangling and feeding problems.
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Figure 15
Welding
Wire
Wire Inlet
Liner
Hold Wire
Securely
Feed
Guide
4.4 Wire Feeding Installation
! WARINING DO NOT set up without SWITCH OFF !
NOTE: MUST Securely hold onto
the end of the welding wire and keep tension on
it during the following steps. If this is not done,
the welding wire will unravel and unspool which
can cause tangling and feeding problems!
Description Picture
1.Release Feed Tensioner and rotate the Idler Arm away from
the Feed Roller.
NOTICE：
*Feed Tensioner knob could be turn counterclockwise to
loosen it. Then, pull it down to remove tension. The
spring-loaded Idler Arm will move upwards as illustrated.
Feed Tensioner
Idler Arm
Figure 16
2.Feed roller instructions.
Ensure that the visible, stenciled size on the drive roll side facing
you matches the wire size being used.
NOTICE:
*The original machine is equipped with a 0.035in knurled
groove feed roller and a 0.035in flux core wire(ONLY for
Flux cored wire).
*If not match, need to change feed roller:
Unscrew the Feed Roller Knob counterclockwise.
Remove the Feed Roller Knob to access the Feed Roller.
Flip or replace the Feed Roller as necessary. Ensure it
matches the wire type and diameter indicated on the Spool.
Figure 17
3.Carefully detach the end of the wire from the spool. Maintain tension on the wire to prevent the
Feed Roller
Knob
Feed Roller
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spool from unwinding.
NOTICE: DO NOT release the wire
4.Trim all bent and crimped wire. Ensure the cut end is smooth without any burrs or sharp edges;
re-cut if necessary.
5.Keep tension on the wire and guide at least 12 inches of wire
through the Wire Inlet Liner, over the Feed Roller, and into the
gun liner.
NOTICE: The spool will rotate in a counter-clockwise
fashion.
Figure 18
6.Close the Idler Arm and turn down the Feed Tensioner until
the idle roller presses down firmly on the wire.
Now you may release the welding wire. Make sure the wire is
positioned in the groove of the lower feed roller.
Figure 19
7.The Feed Tensioner on the Idler Arm adjusts the pressure on the wire .Adjust pressure by
turning the Feed Tensioner to prevent spool overrun, but still allow smooth and easy wire feeding.
Start with the pressure set to an intermediate value. Readjust, if necessary. If the drive roll slips
while feeding wire, the pressure should be increased until the wire feeds properly.
5. Operation for MIG Welding
! WARINING DO NOT set up without SWITCH OFF !
5.1 Connection
Description Picture
1. Connect the ground clamp to “-” negative
polarity
NOTICE:
The ground clamp connector MUST be
tightly connected to the socket to avoid
power short circuit.
Figure 20
2. Connect the polarity changeover plug to “+”
Positive polarity
NOTICE:
The polarity changeover plug MUST be tightly
connected to the socket to avoid power short
Idler Arm
Feed Tensioner
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circuit.
3. Connect the welding gun to euro connector
NOTICE:
The MIG gun connector MUST be tightly
connected to the socket to avoid power short
circuit or air leakage
1. With assistance, place an 100% CO2 cylinder
(not included) onto a cabinet or cart near the
Welder and secure the cylinder in place with two
straps (not included) to prevent tipping.
2. Remove the cylinder’s cap. Stand to the side
of the valve opening, then open the valve briefly to
blow dust and dirt from the valve opening. Close
the cylinder valve.
3. Locate the Regulator and close its valve until it is
loose, then thread Regulator onto cylinder and
wrench-tighten connection.
4. Connector the gas hose to the Regulator’s
Outlet and the welder’s Gas inlet connector.
NOTICE:
The gas hose connector MUST be tightly
connected to the socket to avoid air leakage.
5.2 Input Power Connection
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
Figure 21
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The MIG200 Fit operates with a 110V or 220V power supply.
Plug the Power Cord into a properly grounded. Set MIG Gun
down on nonconductive, nonflammable surface away from
any grounded objects. And then turn the Power Switch ON.
NOTE：
For optimal performance, connect the MIG200 Fit to a 50A branch
circuit. If connected to a circuit with lower capacity, expect reduced
welding current and duty cycle. The circuit must be equipped over 50A with delayed
action-type circuit breaker or fuses.
Ensure the mains supply voltage remains within ±15% of the rated value (110V/110V). Low voltage
can lead to subpar welding results, while excessively high voltage may cause components to
overheat and potentially fail. Check whether the voltage value varies in acceptable range with a
multi-meter.
Code Requirements for Electrical Input Connections
This welding machine must be connected to a power source in accordance with applicable electrical
codes. The National Electrical Code provides standards for amperage handling capability of supply
conductors based on duty cycle of the welding source.
NOTICE: Do not remove the power cord ground prong.
If there is any other question about the installation meeting applicable electrical code requirements,
consult a qualified electrician.
5.3 Wire Stick Out
! WARINING BEWARE OF ELEC TRIC SHOCK!
Description Picture
1.Set the Mode Switch to MIG setting.
2. Inching
In MIG mode, not during welding, press torch trigger for at least 3S, the welder will go in fast inching
status, closing output port voltage and gas valve. Release torch trigger,the welder will stop inching.
Figure 22
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3. Press and hold the gun trigger to load the wire through the gun,
until the wire feeds through the end of the Gun.
NOTE:
Before feeding, Remove the nozzle and contact tip before
feeding the wire to ensure smooth wire feeding.
If the wire does not feed properly and the Spool is stationary, turn
OFF and unplug the Welder and slightly tighten the Feed
Tensioner clockwise before retrying.
If the wire stops instead of bending, disconnect the Welder,
tighten the Feed Tensioner slightly clockwise, and try again. If
the wire bends due to feed pressure, the tension is set correctly.
Point the Gun away from all objects.
The welding wire should match the Feed Roller and contact tips.
4.Turn off the machine after the wire stick out. Then install the
nozzle and contact tip.
NOTE:
Cut the wire 3/8” to 5/8” from the end of the tip.
5.Turn on the machine. The machine is now ready to weld.
6.Close the Door Latch. Make sure. Door is securely latched.
5.4 Operation
! WARINING BEWARE OF ELECTRIC SHOCK!
Turn on the power switch of the machine, and the power indicator illuminates.
Select proper working mode and proper function according your welding situation.
Clamp the Ground clamp onto the workpiece, The Ground clamp must be securely connected to the
workpiece.
Function with synergic Part Select
Select MIG
Open SYN
Figure 23
Contact Tip
Wire
10-16mm
Figure 24
Nozzle
Contact
Tip
MIG
Gun
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18
Select wire
diameter
/ / /
Select MIG material
according to the workpiece and inlet gas, For
details, see 3.2 Multi-function digital
operation panel
Turn the knob to find the required current
Select 2T / 4T / Spot
If you select spot mode
Please adjust the spot time
Function with separated Part Select
Select MIG
Close SYN
/
Turn the knob to find the required voltage
Turn the knob to find the required IPM
Select 2T / 4T / Spot
If you select spot mode
Please adjust the spot time
NOTICE:
•
• Always weld clean, dry and well-prepared material.
• Hold gun at a 45° angle to the workpiece with nozzle about 1/2” from the surface.
• Move the gun smoothly and steadily as you weld.
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• On thin gauge material, move quickly
and only weld 1/4” stitch-welds at a
time to avoid melt-through.
•
Avoid welding in very drafty areas. A
weak, pitted and porous weld will result
due to drafts blowing away the
• Keep wire and liner clean. Do not use
rusty wire.
•
Sharp bends or kinks in the welding
cable should be avoided
• ONLY use MIG solid welding wire.
MIG Welding parameters table
（
for reference only
）
6. Operation for Spool gun
! WARINING DO NOT set up without SWITCH OFF !
6.1 Set Up Spool gun
! WARINING BEWARE OF ELEC TRIC SHOCK!
Description Picture
Pull the Nozzle to remove it. Unscrew the Contact Tip
counterclockwise and remove.
Figure 26
Nozzle
Contact Tip
Figure 25
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20
Open Latch and remove Cover.
note:
To prevent unraveling, leave wire secured to Spool.
Cover
Latch
Figure 27
Loosen Spool Tension Nut.
Install Spool so wire will feed clockwise.
Tighten Spool Tension Nut until Spool cannot spin
freely.
Figure 28
Wire feed cover
Spool Tension Nut
Open Wire Feed Cover.
Pull up on Feed Tensioner, then swing up and over to
expose Idler Arm.
Open Idler Arm to expose wire feed components.
Remove Drive Roller knob. Make sure number on Drive
Roller matches wire diameter. Flip Drive Roller if
necessary.
Figure 29
Drive Roller
Idler Arm
Feed Tensioner
Hold end of wire while releasing from Spool. Cut off any
bent wire.
Keeping tension on Spool, feed Wire through Inlet
Guide and 1/4" into Inlet .
Close Idler Arm and Feed Tensioner.
Replace Spool Cover.
Set Spool Gun down on nonconductive, nonflammable
surface away from any grounded objects.
Figure 30
Inlet
Wire
Inlet Guide
(inside Spool
Holder)
6.2 Connection
Description Picture
1. Connect the ground clamp to “-” negative polarity
NOTICE:
The ground clamp connector MUST be tightly
connected to the socket to avoid power short circuit.
Figure 31
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2. Connect the spool gun to euro connector
NOTICE:
The spool gun connector MUST be tightly connected to
the socket to avoid power short circuit or air leakage
3. Connect the polarity changeover plug to “+” Positive
polarity
NOTICE:
The polarity changeover plug MUST be tightly
connected to the socket to avoid power short circuit.
4. Connect the spool gun control line to socket and
tighten it.
1. With assistance, place an 100% argon cylinder (not
included) onto a cabinet or cart near the Welder and
secure the cylinder in place with two straps (not
included) to prevent tipping.
2. Remove the cylinder’s cap. Stand to the side of the
valve opening, then open the valve briefly to blow dust
and dirt from the valve opening. Close the cylinder valve.
3. Locate the Regulator and close its valve until it is loose,
then thread Regulator onto cylinder and wrench-tighten
connection.
5. Connector the gas hose to the Regulator’s Outlet and
the welder’s Gas inlet connector.
NOTICE:
The gas hose connector MUST be tightly connected to
the socket to avoid air leakage.
6.3 Input Power Connection
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
Figure 32
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22
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
The MIG200 Fit operates with a 110V or 220V power supply. Plug the Power Cord into a
properly grounded. Set MIG Gun down on nonconductive, nonflammable surface away
from any grounded objects. And then then turn the Power Switch ON.
NOTE：
For optimal performance, connect the MIG200 Fit to a 50A
branch circuit. If connected to a circuit with lower capacity,
expect reduced welding current and duty cycle. The circuit
must be equipped over 50A with delayed action-type circuit
breaker or fuses.
Ensure the mains supply voltage remains within ±15% of the
rated value (110V/110V). Low voltage can lead to subpar
welding results, while excessively high voltage may cause
components to overheat and potentially fail. Check whether the
voltage value varies in acceptable range with a multi-meter.
Code Requirements for Electrical Input Connections
This welding machine must be connected to a power source in accordance with applicable electrical
codes. The National Electrical Code provides standards for amperage handling capability of supply
conductors based on duty cycle of the welding source.
NOTICE: Do not remove the power cord ground prong.
If there is any other question about the installation meeting applicable electrical code requirements,
consult a qualified electrician.
6.4 Wire Stick Out
! WARINING BEWARE OF ELEC TRIC SHOCK!
Description Picture
1.Set the Mode Switch to Spool gun MIG setting.
2. Inching
In Spool gun MIG mode, not during welding, press torch trigger for at least 3S, the welder will go
in fast inching status, closing output port voltage and gas valve. Release torch trigger,the welder will
stop inching.
Figure 33
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23
3. Press and hold the gun trigger to load the wire through the gun,
until the wire feeds through the end of the Gun.
NOTE:
Before feeding, Remove the nozzle and contact tip before
feeding the wire to ensure smooth wire feeding.
If the wire does not feed properly and the Spool is stationary,
turn OFF and unplug the Welder and slightly tighten the Feed
Tensioner clockwise before retrying.
If the wire stops instead of bending, disconnect the Welder,
tighten the Feed Tensioner slightly clockwise, and try again. If
the wire bends due to feed pressure, the tension is set
correctly.
Point the Gun away from all objects.
The welding wire should match the Feed Roller and contact
tips.
4.Turn off the machine after the wire stick out. Then install the
nozzle and contact tip.
NOTE:
Cut the wire 3/8” to 5/8” from the end of the tip.
Nozzle
Contact Tip
5.Turn on the machine. The machine is now ready to weld.
6.Close the Door Latch. Make sure. Door is securely latched.
6.5 Operation
! WARINING BEWARE OF ELECTRIC SHOCK!
Turn on the power switch of the machine, and the power indicator illuminates.
Select proper working mode and proper function according your welding situation.
Clamp the Ground clamp onto the workpiece, The Ground clamp must be securely connected to the
workpiece.
Function with separated Part Select
Select MIG
Turn the knob to find the required voltage
Figure 34
Figure 35
Contact Tip
Wire
10-16mm
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24
Turn the knob to find the required IPM
Select 2T / 4T / Spot
If you select spot mode
Please adjust the spot time
NOTICE:
• Always weld clean, dry and
well-prepared material.
•
Hold gun at a 45° angle to the
workpiece with nozzle about 1/2”
from the surface.
• Move the gun smoothly and
steadily as you weld.
•
On thin gauge material, move
quickly and only weld 1/4”
stitch-welds at a time to avoid
melt-through.
• Avoid welding in very drafty areas. A weak, pitted and porous weld will result due
to drafts blowing away the
•
Keep wire and liner clean. Do not use rusty wire.
• Sharp bends or kinks in the welding cable should be avoided
•
ONLY use MIG solid welding wire.
• MIG Welding parameters table（for reference only）
7. Operation for MIG Flux-Cored Welding
! WARINING DO NOT set up without SWITCH OFF !
7.1 Connection
Figure 36
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25
Description Picture
1. Connect the ground clamp to “+” positive
polarity
NOTICE:
The ground clamp connecter MUST be
tightly connected to the socket to avoid
power short circuit.
Figure 37
2. Connect the polarity changeover plug to “-”
negative polarity
NOTICE:
The polarity changeover plug MUST be
tightly connected to the socket to avoid
power short circuit.
3. Connect the welding gun to euro connector
NOTICE:
The MIG gun connecter MUST be tightly
connected to the socket to avoid power
short circuit.
7.2 Input Power Connection
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
The MIG200 Fit operates with a 110V or 220V power supply. Plug the Power Cord into a
properly grounded. Set MIG Gun down on nonconductive, nonflammable surface away
from any grounded objects. And then then turn the Power Switch ON.
NOTE
：
For optimal performance, connect the MIG200 Fit to a 50A branch circuit. If connected to a circuit with
lower capacity, expect reduced welding current and duty cycle. The circuit must be equipped over
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26
50A with delayed action-type circuit breaker or fuses.
Ensure the mains supply voltage remains within ±15% of the rated value. Low voltage can lead to
subpar welding results, while excessively high voltage may cause components to overheat and
potentially fail. Check whether the voltage value varies in
acceptable range with a multi-meter.
Code Requirements for Electrical Input Connections
This welding machine must be connected to a power source in
accordance with applicable electrical codes. The National
Electrical Code provides standards for amperage handling
capability of supply conductors based on duty cycle of the
welding source.
NOTICE: Do not remove the power cord ground prong.
If there is any other question about the installation meeting applicable electrical code requirements,
consult a qualified electrician.
7.3 Wire Stick Out
! WARIN IN G BEWARE OF ELECTRIC SHOCK!
Description Picture
1.Set the Mode Switch to MIG setting.
2. Inching : In MIG mode, not during welding, press torch trigger for at least 3S, the welder will go in
fast inching status, closing output port voltage and gas valve. Release torch trigger,the welder will
stop inching.
3. Press and hold the gun trigger to load the wire through the
gun, until the wire feeds through the end of the Gun.
NOTE:
Before feeding, Remove the nozzle and contact tip before
feeding the wire to ensure smooth wire feeding.
If the wire does not feed properly and the Spool is
stationary, turn OFF and unplug the Welder and slightly
tighten the Feed Tensioner clockwise before retrying.
If the wire stops instead of bending, disconnect the
Welder, tighten the Feed Tensioner slightly clockwise,
and try again. If the wire bends due to feed pressure, the
tension is set correctly.
Point the Gun away from all objects.
Figure 39
Fi
gu
r
e 38
Contact Tip
Wire
10-16mm
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27
4.Turn off the machine after the wire stick out. Then install the
nozzle and contact tip.
NOTE:
Cut the wire 3/8” to 5/8” from the end of the tip.
5.Turn on the machine. The machine is now ready to weld.
6.Close the Door. Make sure. Door is securely latched.
7.4 Operation
! WARINING BEWARE OF ELECTRIC SHOCK!
Turn on the power switch of the machine, and the power indicator illuminates.
Select proper working mode and proper function according your welding situation.
Function with synergic Part Select
Select MIG
Open SYN
Select wire
diameter
/ / /
Select Flux-Cored
Turn the knob to find the required current
Select 2T / 4T / Spot
If you select spot mode
Please adjust the spot time
Clamp the Ground clamp onto the workpiece, The Ground clamp must be securely connected to the
workpiece.
NOTICE:
Fi
g
ure 40
Nozzle
Contact
Tip
MIG
Gun
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• Always weld clean, dry and well-prepared material.
•
Hold gun at a 45° angle to the
workpiece with nozzle about 1/2” from
the surface.
• Move the gun smoothly and steadily
as you weld.
•
On thin gauge material, move quickly
and only weld 1/4” stitch-welds at a
time to avoid melt-through.
• Avoid welding in very drafty areas. A
weak, pitted and porous weld will result due to drafts blowing away the
•
Keep wire and liner clean. Do not use rusty wire.
• Sharp bends or kinks in the welding cable should be avoided
•
ONLY use Flux Cored MIG welding wire.
• Flux core MIG Welding parameters table（for reference only）
8. Operation for MMA and TIG
!
WARINING DO NOT set up without SWITCH OFF !
8.1 MMA Welder Cable Connection
NOTICE: Before setting up or using this product for new function,
make sure to read the entire Important Safety Information section at
the beginning of this manual!
Description Picture
1. Connect the ground clamp to “-” Negative polarity
NOTE:
The ground clamp connecter MUST be tightly
connected to the socket to avoid power short circuit.
Ensure the ground clamp is connected on clean,
bare metal (not rusty or painted).
Figure 41
Figure 42 DCEP
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2. Connect the Electrode Holder to “+” Positive polarity
NOTE: The Electrode Holder connecter MUST be tightly
connected to the socket to avoid power short circuit.
3. When you use Alkaline rods (E7018), need to DCEP, that
is connect the holder and ground clamp as mentioned above
in above 1. and 2.
If you use Acidic rods(E6013), need to DCEN, that is connect
the holder to “-”and ground clamp to “+” .
NOTE: Incorrect wiring can affect welding results.
4. Place the bare metal end of the Stick Electrode (sold
separately) inside the jaws of the Electrode Holder.
NOTE: Set Electrode Holder down on nonconductive,
nonflammable surface away from any grounded
objects.
Install Stick Electrode with the machine turned off.
8.2 MMA Welder Operation
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
Operation steps
Picture
1.
connect power cord
NOTE: Turn the Power Switch off before connecting Power
Cord. Plug the Power Cord into a properly grounded and rated
receptacle that matches the plug. The circuit must be equipped
with delayed action-type circuit breaker or fuses.
Figure 43 DCEN
Figure 44
Figure 45
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8.3 MMA Welding parameters table
Following table is suitable for mild steel welding. For other materials, consult related
materials and welding process for reference.
2. Place the bare metal end of the Stick Electrode (sold separately) inside the jaws of the Electrode Holder.
3. Turn the Power Switch ON.
The Operation interface will light up and the Cooling fan will rotate.
NOTE:Welder is now energized and open circuit Voltage is
present.
4. Select MMA
5. Stroke the workpiece lightly to ignite the arc.
Tips for igniting the arc:
a. Tap the surface with the Electrode.
b. Stroke the surface with the Electrode.
c. Strike the surface like a match with the Electrode.
6.
After the arc ignites:
a. Lift the Electrode off workpiece the same distance as the diameter of the bare metal end.
b. Tilt Electrode back 10 to 20 degrees.
c. Drag Electrode to the back end of the weld puddle to deposit material as needed.
7. The initial settings may need to be adjusted after stopping and carefully inspecting the weld.Proper welding
takes experience.
8. When finished welding; lift the Electrode from the workpiece, then set Electrode Holder down on
nonconductive, nonflammable surface away from any grounded objects.
9. Turn the Power Switch OFF
NOTE:
To prevent accidents, after use:
• Allow Welder to cool down.
• Unplug Welder’s power cord from outlet.
• Remove Ground Clamp.
• Disconnect Electrode Holder and Ground Cables.
10. Clean, then store Welder and its accessories indoors out of children’s reach.
Figure 46
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31
8.4 Lift TIG Welder Cable Connection
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
Description
Picture
1. Connect the ground clamp to “+” Positive polarity
NOTICE:
The ground clamp connecter MUST be tightly
connected to the socket to avoid power short
circuit.
Ensure the ground clamp is connected on clean,
bare metal (not rusty or painted).
2. Connect the tig gun（WP-17V） to “-” Negative polarity
NOTICE:
The tig gun connecter MUST be tightly connected to
the socket to avoid power short circuit.
Figure 47
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Figure 49
Electrode
Grinding
Wheel
1. With assistance, place an 100% Argon cylinder (not
included) onto a cabinet or cart near the Welder and secure the
cylinder in place with two straps (not included) to prevent
tipping.
2.
Remove the cylinder’s cap. Stand to the side of the valve
opening, then open the valve briefly to blow dust and dirt from
the valve opening. Close the cylinder valve.
3.
Locate the Regulator (included) and close its valve until it is
loose, then thread Regulator onto cylinder and wrench-tighten
connection.
4.
Connect Shielding Gas Hose on TIG Torch Cable
Connector to the Regulator’s Outlet and wrench-tighten
connection.
Sharpen tungsten Electrode
WARNING! TO PREVENT SERIOUS INJURY: Some Electrodes may contain materials that are
hazardous to breathe. Wear a respirator and ANSI-approved safety goggles when grinding an
Electrode.
To avoid Electrode contamination, dedicate a fine grit grinding wheel exclusively to Electrode grinding.
1. Shut off the welder and wait until Electrode and Torch have cooled enough to
handle.
2. Remove Back Cap to release Collet’s grip on Electrode.
3. Pull Electrode out from front of Torch. (Pulling it from rear will damage Collet
and create burrs on Electrode).
4. If Electrode has dulled or been otherwise contaminated, use pliers or a
suitable tool to grip the Electrode above the contaminated section and snap off
the end of the Electrode.
5. Lightly press Electrode tip against the surface of the grinding wheel at an angle.
Rotate Electrode tip until a blunt point is formed.
NOTE: Grinding direction must be parallel to length of Electrode.
6. The conical portion of the ideal tip will be 2-1/2 times as long as the Electrode
diameter.
7. Re-insert Electrode into Collet with tip protruding 1/8"-1/4" beyond the Ceramic
Nozzle, then re-tighten the Back Cap to secure the Electrode in place.
Figure 48
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33
Figure 50
Insert tungsten
Electrode here
Back
Cap
Collet
Collet
Body
Ceramic
Nozzle
Assemble tig torch
1. Consult Settings Chart, on top of Welder, to determine
proper Tungsten Electrode size to be used with thickness
of material to be welded.
2. Match Collet and Collet Body sizes to Tungsten
Electrode size.
3. Thread Collet Body into the front of the Torch.
4. Make sure Ceramic Nozzle size is appropriate for
application.
5. Thread Ceramic Nozzle onto Collet Body.
6. Insert Collet into back of Torch and into Collet Body.
7. Insert Tungsten Electrode into Collet on front of Torch.
8. Lock Electrode in place with Back Cap. Electrode
should protrude 1/8" to 1/4" beyond the Ceramic Nozzle.
NOTE: The tig torch and tungsten electrode are not
included in the machine. If you need to purchase,
please log in to the official website:
WWW.ARCCAPTAIN.COM
8.5 Lift tig Welder Operation
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
Operation steps
1. Open gas cylinder’s valve all the way.
NOTE: TO PREVENT DEATH FROM ASPHYXIATION:
Do not open gas without proper ventilation. Fix gas leaks immediately. Shielding gas can displace
air and cause rapid loss of consciousness and death. Shielding gas without carbon dioxide can be
even more hazardous because asphyxiation can start without feeling shortness of breath.
2.
Set Flow Gauge to SCFH value
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3. connect power cord
NOTE: Turn the Power Switch off before connecting Power
Cord. Plug the Power Cord into a properly grounded and rated
receptacle that matches the plug. The circuit must be equipped
with delayed action-type circuit breaker or fuses.
Figure 51
4. Turn the Power Switch ON.
NOTE: Set TIG Torch down on nonconductive, nonflammable
surface away from any grounded objects.
The Operation interface will light up and the Cooling fan will rotate.
5. Select Lift TIG
NOTE:
Welder is now energized and open circuit Voltage is
present.
6.
Hold TIG Torch in one hand and the TIG Rod (sold separately) in other hand. Both hands need to wear
protective gloves.
WARNING! TO PREVENT SERIOUS INJURY: Metalwork bench must be grounded when TIG
welding.
NOTE: Maintain a constant distance between the Tungsten Electrode and the workpiece: between
1 and 1.5 times the diameter of the Electrode.
7. The initial settings may need to be adjusted after stopping and carefully inspecting the weld. Please refer
to 6.7 Lift TIG Welding parameters table，Proper welding takes experience.
8. Open valve on TIG Torch to start gas flow.
9. To initiate welding arc, touch Electrode to work piece and lift.
10. When welding puddle is hot enough, tilt Torch backward about 10-15 degrees from vertical and
move it back slightly. Add TIG Rod material as needed to the front end of the weld puddle.
11. Alternate between pushing the torch/weld puddle and adding the TIG Rod material.
NOTE: Remove the TIG Rod each time the Electrode is advanced, but do not remove it from the gas shield.
This prevents oxidation from contaminating the weld.
12. When finished welding, pull Torch away from work piece until welding arc is broken, then return the gas
coverage until weld solidifies.
13. Close valve on TIG Torch and turn Right Knob to OFF to turn off power to TIG Torch.
14. Set TIG Torch down on nonconductive, nonflammable surface away from any grounded objects.
15. Turn the Power Switch OFF.
16. To prevent accidents, after use:
• Allow Welder to cool down.
• Unplug Welder’s power cord from outlet.
• Remove Ground Clamp from workpiece or table.
• Disconnect TIG Torch and Ground Cables.
Figure 52
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• Close gas cylinder’s valve securely, remove regulator and replace cap.
• Disconnect Gas Hose from Welder.
• Store and secure gas cylinder.
• Clean, then store Welder and its accessories indoors out of children’s reach.
8.6 Lift TIG Welding parameters table
Following table is suitable for stainless steel welding. For other materials, consult
related materials and welding process for reference.
9. Engineer Mode
! WARINING BEWARE OF ELECTRIC SHOCK!
A default set of common welding parameters for this machine can be revised by revising system
parameters in case of need. Below is method:
NOTE:
The default parameters of the welder are modified for experienced welders.
The default parameters of the welder have been set in the best state. Do not change the
default parameters of the welder unless necessary.
NO operation Picture
1
Press MIG operation mode selection button without
releasing, turn on the power switch of the welder. As soon
as display shows “P1”, release MIG operation mode
selection button to enter revision interface of system
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parameters.
2
Select system parameters of MIG, TIG or MMA by pressing
Welding process selection button.
3
Select the parameter to be revised by rotating Welding
Voltage knob. Revise the parameter value by rotating
Welding Current knob. After revision, press Synergic
button to save.
4
After revising parameters, press operation selection
button again to exit the setting of system parameters to be
in normal standby.
System parameter:
MIG mode
No. Function parameter Default
Setting
range
Unit Description
P1
Background parameters
initialization
0 0/1 -
Restore factory default
(Select “1” to restore factory default)
P2 Welding time calculation 0.0 0.0
～
999 day Calculate welding time
P3 Burn-back time at MIG 200 0
～
400 ms Burn-back time at MIG
P4 Burn-back voltage at MIG 12.0 10.0
～
18.0 V
Given output voltage of removing metal
ball after releasing torch trigger at MIG
P5 Pre-flow time at MIG 5 0
～
300 ms Pre-flow time at MIG
P6 Post-flow time at MIG 0.2 0.0～2.0 S Post-flow time at MIG
MMA mode
No. Function parameters Default
Setting
range
Unit Description
P1
Background parameters
initialization
0 0/1 -
Restore factory default
(Select “1” to restore factory default)
P2 Welding time calculation 0.0 0.0～999 day Calculate welding time
P3 VRD switch at MMA 0 0/1 -
VRD switch at MMA
（ “0”: VRD is off, “1”：VRD is on）
P4 Arc-force current at MMA 50 20
～
80 A
Given current value when output voltage
is below 14V at MMA
P5 Arc ignition current at MMA 60 20～100 A
Given current value of arc ignition at
MMA
P6 Arc ignition time at MMA 400 300
～
999 ms
Duration for given current value of arc
ignition at MMA
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TIG mode
No. Function parameters Default
Setting
range
Unit Description
P1
Background parameters
initialization
0 0/1 -
Restore factory default
(Select “1” to restore factory default)
P2 Welding time calculation 0.0 0.0～999 day Calculate welding time
P3 Lift TIG current 50 35～65 A
Current value when tungsten and
workpiece are shorted at Lift TIG
P4 Post-flow time at TIG* 2.0 1.0-10.0 S Post-flow time at TIG
10. MIG Basic Welding Technique
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: The following steps require applying power to the Welder
with the cover open.
To prevent serious injury from fire or electric shock:
1.DO NOT touch anything, especially not the ground clamp, with the
gun or welding wire or an arc will be ignited.
2. DO NOT touch internal Welder Components while it is plugged in.
10.1 Basic MIG Welding
Good weld quality and profile depend on factors like gun angle, travel direction, electrode extension
(stick out), feeding speed, base metal thickness, wire feed speed (amperage), and arc voltage. Here are
some basic guidelines to help with your setup:
Gun Position and Travel Direction
Gun position refers to how the wire is directed at the base metal, including the angle and travel direction
chosen. Feeding speed and work angle affect the weld bead profile and penetration depth.
Push Technique
In the push technique, the wire is positioned at the leading edge of the weld pool and pushed towards
the unmelted work surface. This technique offers a clear view of the weld joint and wire direction. It
directs heat away from the weld puddle, allowing for faster feeding speeds, resulting in a flatter weld
profile with light penetration. It's suitable for welding thin materials, producing wider and flatter welds with
minimal cleanup or grinding required.
Perpendicular Technique
In the perpendicular technique, the wire is fed directly into the weld. This method is primarily used in
automated situations or when necessary. It typically results in a higher weld profile and deeper
penetration.
Drag Technique
With the drag technique, the gun and wire are pulled away from the weld bead. The arc and heat focus
on the weld pool, resulting in more heat on the base metal, deeper melting, increased penetration, and a
higher weld profile with more buildup.
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Travel Angel
Travel angle is the right to left angle relative to the direction of welding. A travel angle of 5°- 15° is ideal
and produces a good level of control over the weld pool. A travel angle greater that 20° will give an
unstable arc condition with poor weld metal transfer, less penetration, high levels of spatter, poor gas
shield and poor quality finished weld.
Angle to Work
The work angle is the forward back angle of the gun relative to the work piece.The correct work angle
provides good bead shape, prevents undercut, uneven penetration, poor gas shield and poor quality
finished weld.
Stick Out
Stick out is the length of the unmelted wire protruding from the end of the contact tip. A constant even
stick out of 0.2-0.4in will produce a stable arc, and an even current flow providing good penetration and
Push Technique
Gun Perpendicular
Drag Technique
Travel Direction
Travel Direction
Travel Direction
Wire
p
ointed ahead of bead
Wire
p
ointed back into bead
Figure 53
Figure 54
A
ngle 5°-15°
Not enough angle
Angle more than 20°
good level of control over the
weld pool, even flat weld
less control over the weld pool
more spatter
poor control,unstable arc,less
penetration,lots of spatter
Figure 55
Correct angle
Not enough angle
Too much angle
good level of control over the
w
eld pool, even flat weld
less control over the weld pool
more spatter
poor control, unstable arc,less
penetration, lots of spatter
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Figure 56
5-10m
m
Normal stick out
Too short Too long
Even arc, good penetration
even fusion, good finish
Unstable arc, spatter, over
heat contact tip
Unstable arc, spatter, poor
penetration and fusion
even fusion. Too short stick out will cause an unstable weld pool, produce spatter and over heat the
contact tip. Too long stick out will cause an unstable arc, lack of penetration, lack of fusion and increase
spatter.
10.2 Feeding Speed
Feeding speed refers to how quickly the gun is moved along the weld joint, measured in inches per
minute. It can vary based on conditions and the welder's skill, limited by their ability to control the weld
pool. The push technique allows for faster feeding speeds compared to the drag technique. Gas flow
should match the feeding speed, increasing with faster feeding and decreasing with slower speed.
Feeding speed should match the amperage and decreases as material thickness and amperage
increase.
Too Fast Feeding Speed
Too fast feeding speed results in insufficient heat per inch of travel, leading to less penetration and
reduced weld fusion. The weld bead solidifies quickly, trapping gases inside and causing porosity.
Undercutting of the base metal may occur, leaving an unfilled groove in the base metal.
Too Slow Feeding Speed
Too slow feeding speed produces a wide weld with inadequate penetration and fusion. The arc energy
remains on top of the weld pool, resulting in excessive weld metal deposition per inch and poor-quality
weld deposits.
Correct Feeding Speed
The correct feeding speed maintains the arc at the leading edge of the weld pool, allowing sufficient
melting of the base metal for good penetration, fusion, and wetting out of the weld pool. This produces a
high-quality weld deposit.
11. MAINTENANCE
! WARINING BEWARE OF ELECTRIC SHOCK!
NOTICE: To prevent serious injury, fire, and burns:
Unplug the welder.
Place the MIG gun on a heat-proof, electrically non-conductive
surface.
Allow all parts of the welder to cool completely before servicing.
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11.1 Routine and Periodic Maintenance
• Before Each Use -Check over machine and accessories for any obvious condition that may prevent
safe performance or operation, repair or replace items as necessary to correct any abnormal
condition.
• loose hardware
• misalignment or binding of moving parts
• damaged cord / electrical wiring
• frayed or damaged cables
• cracked or broken parts
• any other condition that may affect its safe operation.
•
Store in a clean and dry location.
•
For optimal weld quality, clean and inspect the contact tip and nozzle before each use.
Cleaning Tip and Nozzle- With the power switch OFF, keep the contact tip and nozzle clean to
prevent issues like shorted nozzles, poor welds, and overheating of the gun.
NOTE:
Make sure that the entire Mig gun is completely cool and that the power cord is unplugged from the
electrical outlet before proceeding.
Torch accessories are consumables, ARCCAPTAIN provided more for your replacement.
11.2 Daily maintenance
The power of the switching box and the welding machine should be shut down before daily checking
(except appearance checking without contacting the conductive body) to avoid personal injury accidents
such as electric shock and burns.
Daily checking is very important in keeping the high performance and safe operation of this welding
machine.
Do daily checking according to the table below, and clean or replace components when necessary.
In order to ensure the high performance of the machine, please choose components provided by
ARCCAPTAIN when replacing components.
Daily checking of the welding machine
Items Checking requirements Remarks
Front panel
Whether any of the components are damaged or
loosely connected;
Whether the output quick sockets are tightened;
Whether the abnormity indicator illuminates.
If unqualified, check the
interior of the machine,
and tighten or replace the
components.
Back panel
Whether the input power cable and buckle are in
good condition;
Whether the air intake is unobstructed.
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Cover Whether the bolts are loosely connected.
If unqualified, tighten or
replace the components.
Chassis Whether the screws are loosely connected.
Routine
Whether the machine enclosure has color fading or
overheating problems;
Whether the fan sounds normal when the machine is
running;
Whether there is abnormal smell, abnormal vibration
or noise when the machine is running.
If abnormal, check the
interior of the machine.
Cleaning the
Feed Rolls
Clean the grooves in the drive rolls frequently. This can be done by using a small
wire brush. Also wipe off, or clean the grooves on the upper feed roll. After
cleaning, tighten the feed roll retaining knobs.
Daily checking of the cables
Items Checking requirements Remarks
Earth
cable
Whether the grounding wires (including workpiece
Earth wire and welding machine earth wire) break off.
If unqualified, tighten or
replace the components.
Welding
cable\
MIG gun
Whether the insulating layer of the cable is worn, or the
conductive part of the cable is exposed;
Whether the cable is drawn by an external force;
Whether the cable connected to the workpiece is well
connected.
Use appropriate methods
according to the work site
situation to ensure safety
and normal cutting.
12. TROUBLESHOOTING
!
WARINING DO NOT set up without SWITCH OFF !
This Troubleshooting Guide is provided to help you locate and repair possible machine
malfunctions. Simply follow the three step procedure listed below.
Locate Problem(Symptom)
NOTICE: For safety and to maintain warranty validity:
Only qualified authorized personnel should perform service and repairs!
Unauthorized repairs may endanger the technician and machine operator!
To prevent electrical shock, follow all safety precautions in this manual!
Use only original spare parts when replacing components!
When ordering spare parts, provide machine type, serial number, and item
number, along with type designation and item number of the spare parts!
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Look under the column labeled “PROBLEM(SYMPTOMS)”. This column describes possible symptoms
that the machine may exhibit. Find the listing that best describes the symptom that the machine is
exhibiting.
Possible Cause
The second column labeled “POSSIBLE CAUSE” lists the obvious external possibilities that may
contribute to the machine symptom.
Recommended Course of Action
This column provides a course of action for the Possible Cause, generally it states to contact you local
after-sales service center.
Problem (symptoms)
Possible areas of
mis-adjustment
Recommended course of
action
Bead is too
thick(intermittently)
Feeding speed is slow and/or
inconsistent
Increase and maintain a
constant feeding speed.
Output heat range is too high. Set the knob to low
Bead does not penetrate
base metal.
Feeding speed is inconsistent. Decrease and maintain a
constant feeding speed.
Output heat range is too low. Set the knob to high
Wire sputters and sticks to
workpiece
The wire is damp. Change to dry wire. Be sure wire
is stored in a dry location
Wire feed speed is too fast. Reduce wire feed speed.
Edge of weld has ragged
depressions
Feeding speed is too fast. Reduce feeding speed.
Wire feed speed is too fast. Reduce wire feed speed.
Output heat range is too high Set the knob to low
There is no current after
turning on the machine.
The power cord is not well
connected.
Reconnect the power cord.
The welding machine fails. Ask professionals to check.
The fan does not work
during welding.
The power cord for the fan is not
well connected.
Reconnect the power cord for
the fan.
Auxiliary power fails. Ask professionals to check.
The overheating indicator is
on.
The overheating protection circuit
works.
It can be recovered after the
machine cools down.
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There is no response when
pushing the torch trigger
and the alarm indicator
does not illuminate.
The torch trigger fails. Repair or replace the welding
torch.
When the torch trigger is
pushed, there is gas output,
but there is no output
current, and the alarm
indicator does not
illuminate.
The earth cable is not well
connected with the workpiece.
Reconnect it.
The torch trigger fails. Repair or replace the welding
torch.
There is output current
when pushing the torch
trigger to feed gas, but the
wire feeder does not work.
The wire feeder is clogged. Unclog it.
The welding current is
unstable.
The wire feeder fails. Repair it.
The control PCB or wire feeding
power PCB inside the machine
fails.
Replace it.
The pressure arm on the wire
feeder is not properly adjusted.
Adjust it to get proper pressure.
The drive roll does not match the
wire size being used.
Make sure they match with each
other.
The contact tip of the welding torch
is badly worn.
Replace it.
The wire-feeding tube of the
welding torch is badly worn.
Replace it.
The electrode is of poor quality. Use electrode of good quality.
Common Failure Analysis and Troubleshooting:
Common failure and troubleshooting
Failure Cause Solution
Turn on the
machine, there is
no current
● Power is not well connected
● Welder fails
● Reconnect power
● Ask professional personnel for help
Fan does not work
during welding
●Fan power cord is not well
connected
● Auxiliary power supply fails
● Reconnect fan power cord
● Ask professional personnel for help
Display “E10” ● Over-current protection for ● Restart the welder, if problem cannot be solved,
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welder contact maintenance personnel
Display “E14”
●Short-circuit current
protection
● Restart the welder, if problem cannot be solved,
contact maintenance personnel
Display “E15” ● Power limitation protection
● Restart the welder, if problem cannot be solved,
contact maintenance personnel
Display “E20”
●Over-current protection for
wire feeder
● Restart the welder, if problem cannot be solved,
contact maintenance personnel
Display “E60” ● Overheat protection ● It gets to normal after cooling the welder
GMAW (MIG/MAG) failure and troubleshooting
Failure Cause Solution
There are no response and
error code after pressing
torch trigger
● Torch is not well connected to
wire feeder
● Torch trigger fails
● Reconnect torch and wire feeder
● Repair or replace the torch
There are gas output and
wire feeding after pressing
torch trigger but no current
output and error code
● Ground wire is not well
connected to workpiece
● Wire feeding unit or torch fails
● Reconnect ground wire and
workpiece
● Repair the wire feeding unit or torch
There are gas supply and
current output but no wire
feeding after pressing torch
trigger
●Wire feeding unit is stuck
●Wire feeder fails
●Control board in the welder
fails
● Unblock the wire feeding unit
● Repair the wire feeder
● Ask professional personnel for help
Welding current is instable
●Unsuitable moment
adjustment for wire feeder
● Wire feed rolls do not match
welding wire
● Contact tip is worn severely
● Wire liner of torch is worn
severely
●Welding wire is of poor quality
● Readjust moment of wire feeder
● Select suitable wire feed rolls and
welding wire
● Replace the contact tip of torch
● Replace the wire liner
● Replace wire with one of better quality
If you do not understand or are unable to perform the Recommended Course of Action
safely, contact arccaptain.com for after-sale service.
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