Preface

Please read first.

Before the installation or operation, in order to protect your and others’ safety, please read and
understand the manual.

Warning! The welding machine is professional equipment for arc welding, which is only
provided for professionals with training Background and technical background.

Thank you for choosing Jasic inverter welder. In order to ensure your safety and correct operation, please read this
manual carefully. Keep this manual properly for future references.

This product is designed and manufactured according to relevant national and international standards, conforming to
GB15579, ICE60974, EN60974, AS60974, UL60974, etc.

This product conforms to electromagnetic compatibility requirements for A category equipment.

Relevant design plans and manufacturing technologies of this product are patented.

All products purchased from Jasic are covered for one-year defect liability period, starting from the purchasing day on
the contract, provided with complete technical supports and after sales maintenance. Users can contact nearby Jasic
office, customer service center, or Jasic headquarters, if there is anything needed.

SHENZHEN JASIC TECHNOLOGY CO., LTD.

Copyright by Shenzhen Jasic Technology Co., Ltd. All rights are reserved. Jasic reserves the right to modify this
manual without prior notice.

Address: No. 3, Qinglan 1st Road, Pingshan District, Shenzhen, Guangdong, China
Postcode: 518118
Tel: 0755-29651666
Customer service hotline: 400-0612-888
Website: http://www.jasictech.com
E-mail: sales@jasictech.com
 CONTENTS

1. SAFETY GUIDANCE ...................................................................................................................................................... 1

1.1 Precautions for Installation ..................................................................................................................................... 1
1.2 Precautions for operation ........................................................................................................................................ 2
1.3 Precautions for scrapping ........................................................................................................................................ 3
2. PRODUCT OVERVIEW .................................................................................................................................................. 3
2.1 Model name description .......................................................................................................................................... 3
2.2 Product features....................................................................................................................................................... 3
3. TECHNICAL PARAMETERS ......................................................................................................................................... 5
3.1 Technical parameters ............................................................................................................................................... 5
3.2 Output characteristics .............................................................................................................................................. 6
4. INSTALLATION .............................................................................................................................................................. 6
4.1 Installation requirements ......................................................................................................................................... 6
4.2 Electrical connection ............................................................................................................................................... 7
4.3 Front & back panel introduction ............................................................................................................................. 7
4.4 Power supply input cable connection ...................................................................................................................... 8
4.5 Gas cylinder connection .......................................................................................................................................... 9
4.6 Machine installation .............................................................................................................................................. 10
5. FUNCTIONS AND OPERATION.................................................................................................................................. 12
5.1 Digital front panel ................................................................................................................................................. 12
5.2 Function description .............................................................................................................................................. 15
5.3 Selection and adjustment of internal parameters................................................................................................... 24
6. OPERATION PRECAUTIONS ...................................................................................................................................... 26
6.1 Precautions ............................................................................................................................................................ 26
6.2 Maintenance .......................................................................................................................................................... 27
6.3 Troubleshooting .................................................................................................................................................... 28
6.4 Welding processing reference (for reference only) ............................................................................................... 30
6.5 After sales service ................................................................................................................................................. 37
7.Wiring Diagram ............................................................................................................................................................... 38
1. SAFETY GUIDANCE

1.1 Precautions for Installation

Warning! During the welding process, it may cause damage to you and others, please
do well the protection. For the details, please refer to the safety protection guide to the
operators that accord with the manufacturer accident prevention requirements.

Beware of electric shock!

 Install grounding device according to relevant standard.
 Do not touch live parts with naked skin, wet gloves or wet clothes.
 Make sure you are insulated from ground and workpiece.
 Close the cover plate of the machine before power on to avoid any electric shock.
 Confirm the safety of your working position.
Beware of fire hazard!
 Please install the machine in dry indoor working environments; please make sure there
is over 30cm distance between the machine and wall/ other objects.
 Make sure there are no inflammables near the welding position, or there might be
danger of fire hazard
Beware of explosion!

 This machine can be installed in normal environment where there is exhaust gas or dust
which are resulted from normal welding processing. But please do not install the
machine in an environment with explosive gas, or metal dust environment, which could
have direct contact with spatters; or there might be danger of explosion.

Carrying or moving the machine can be dangerous.

 Cut off the power supply via the switching box before moving the welding machine.
 Make sure that the hanging rings are tightened, and that the machine enclosure and cover are fixed when moving the
welding machine with a crane.
 Two lifting belts should be used when lifting the welding machine, and the angle formed by the lifting belt and the
vertical direction should be smaller than 15°.
 Do not lift the machine together with other objects.
 Do not apply any stress on the operation panel and cover when moving the welding machine. Otherwise, personal
injury or property damage may be caused by a drop.
 Please make sure the wheels are fixed tightly when using a forklift to move the machine.
 Do not install or run the welding machine when the machine is damaged or lacks any components. Otherwise, fire
hazard or personal injury may be caused.

1
 Replacing the components can be dangerous.

 Only professionals can replace the machine components. Make sure there are no foreign bodies such as wire leads,
screws, gaskets and metal bars falling into the machine inside when replacing the components.
 Make sure the connecting wires inside the machine are correctly connected after replacing the PCBs, and then the
machine can be operated. Otherwise, there is a risk of damage to property.

1.2 Precautions for operation

Only qualified professional is allowed to operate this machine.

 Please use national safety supervision department authorized labor
protection appliance.
 Operators must be valid and certified welding & cutting special work
personnel.
 Do not maintain or fix machines when machine is powered on.
Smoke-may be harmful to your health!
 Welding might generate harmful smoke and gas; please avoid inhalation of
waste gas in welding.
 Keep your head away from the smoke during welding. Make sure the
working environment is well ventilated with exhaust or ventilation
equipment.
Arc radiation-may hurt your eyes and burn your skin!
 Use proper mask and wear protective clothing to protect your eyes and
body.
 Use proper mask or curtain to protect onlookers from being injured.
Magnetic field can make cardiac pacemaker a bit wonky.
 People with cardiac pacemaker should consult the doctor before carrying
out welding.
 Stay away from the power source to reduce the interference of magnetic
field.
Improper use and operation may result in a fire or an explosion.
 Welding spark may result in a fire, so please make sure there are no
inflammables near the welding position, and pay attention to fire safety.
 Ensure there is fire extinguisher nearby, and make sure someone has been
trained to operate the fire extinguisher.
 Do not cut sealed container.
 Do not use this machine for pipe unfreezing

2
 Hot workpiece can cause severe scald.
 Do not touch hot workpiece with bare hands.
 Cool the welding torch for a while after continuously working.
Excessive noise does great harm to people’s hearing.
 Wear ear covers or other hearing protectors when welding.
 Give warning to onlookers that noise may be potentially hazardous to
hearing.
Moving parts may injure your body.
 Please keep away from moving parts (like fan).
 Each door, panel, cover, baffle plate, and protective device the like should
be closed and located correctly.
Seek professional supports when trouble strikes.
 When trouble strikes in installation and operation, please inspect according
to related contents in this manual.
 If you still cannot understand fully, or you still cannot solve the problem,
please contact the dealer or the service center for professional supports.

1.3 Precautions for scrapping

Pay attention to the following when discarding the welding machine:

 Burning the electrolytic capacitors in the main circuit or on the PCBs may cause an explosion.
 Dispose the machine as industrial waste.

2. PRODUCT OVERVIEW

2.1 Model name description

MIG 500 P

Pulse
Rated welding current
Gas metal arc welding

2.2Product features

This digital DC MIG machine is of excellent welding performance, multiple functions, abundant interfaces,
convenient operation, high reliability and easy upgrade.

3
 A. Excellent welding performance

Mature IGBT inverter technology: this machine main circuit adopts international cutting-edge high frequency
IGBT full bridge inverter technology, which largely reduces machine size and improves power supply conversion
rate. High inverter frequency is beyond audio range, which almost eliminates noise pollution, contributing easily
controlled welding current, as well as more smooth and stable welding processing.

Brand-new digital control method: the control circuit is dominated by high performance processor, which
realizes fine control of the welding waveform. Waveform of pulse current varies with wire of different material,
diameter and shielding gas so that it can achieves optimal arc and welding of high efficiency and quality with neat
metal weld and elegant shape; Precise procedure control enables stable transition of the whole processing from arc
start, welding to crater.

B. Powerful functions: digital control with high performance processor equips this machine extra functions
which traditional welding machines do not possess. These functions are of vital importance in modern automation
and semi-automation welding application.

Multiple welding modes: The machine has four welding modes including pulse MIG, DC MIG, MMA and
simple TIG.

“synergic control”：this machine has built-in synergy parameters function for different materials, wire sizes and
under different protective gases. After operators’ setting on material type, wire dia and protective gas through front
panel, he/she only needs to set welding current (or wire feed speed/ work piece thickness); then machine will have
auto-match on welding voltage.

Parameters set：there are 20 sets parameters in this machine, which allows storage and invoking of all welding
status and parameters. This will make convenience for different users’ operation in one machine. Each operator can
set his or her own welding method and parameters, and without interfering with each other.

Four MIG operation methods: except for 2T, 4T, there are also spot welding and repeat (4T) operation
method. In addition, under 2T of pulse MIG, specification and time for initial phase and crater phase can be set to
satisfy automation welding.

C. Convenient operation: operators can easily set welding mode, wire type, gas, wire dia, etc. through the
concise human-computer interface. They can also set different parameters during welding processing through
encoder. Meanwhile, both power source front panel and wire feeder front panel can set welding current and voltage
(or arc length).

D. High reliability: this product is carefully designed and has gone through a whole series of lab testing, not only
in enclosure, but also internal components. eg. This product external structure is anti-vibration, anti-dust, even
anti-metal dust. All electric components, PCB are with special protection treatment, and can be used in damp
environment for a long time. Meanwhile, this machine is of over-heat protection, over-current protection,
under-voltage protection, lack of water protection, communication failure warning, etc. These protection can
guarantee all external and internal failures will not do damage to welding machine and other equipments.
E. Convenient upgrade: this machine adopts high performance processor as its main control chip. Special
customized demands can be realized by upgrading software. There is reserved software download interface in the
back of the machine, which saves the procedure of open the machine.

Other information about the machine:

4
 1、 Four functions: Pulse MIG, MIG, MMA, Lift-TIG.
2、 Cooling method: fan cooling.
3、 Handles or wheels are provided for moving.
4、 Characteristics of welding machine: flat characteristic usually,
or drop characteristic while set arc force.
5、EMC is Class A according to CISPRⅡ.

3. TECHNICAL PARAMETERS

3.1 Technical parameters

model MIG500P(N36801) MIG350P(N36701)

Power supply 3Phase AC380V±20% 50Hz
Input Rated input（KVA） 26.7 16.6
Power factor 0.90 0.89
Rated OCV（V） 86
V.R.D √
MMA、TIG Rated VRD（V） 15
MIG rated max output（A/V） 500A/39V 350A/31.5V
MMA rated max output（A/V） 500A/40V 350A/34V
TIG rated max output（A/V） 500A/30V 350A/24V
Output
Welding voltage（V） 10-50 10-42
Welding current（A） 30-500 30-350
Wire feed speed（m/min） 1.5-23.0 1.5-23.0

Regulator heater voltage（V） AC36

Output characteristics MMA&TIG:CC MIG/MAG:CV
Working temperature（℃） —10～+40
Storage temperature（℃） —25～+55
Environment
IP class IP23
Cooling type Air-cooled
Rated duty circle（％） 50% 60%
Efficiency（％） 91% 90%
Insulation grade F F
Dimension（mm） 785×330×666 630x300x540
Weight (kg) 59 45
Note:
Duty cycle (%):
The ratio of given duration time/the full-cycle time
This ratio shall be within 0~1, and can be indicated by percentage.
In this standard, the full-cycle time is 10minutes.

5
 For example, if the duty cycle is 60%, the load-applying time shall be 6 minutes and the following.

3.2 Output characteristics

U(V)
U2=14+0.05I2
86
MIG is of CV characteristics
Output external characteristics 40
curve is as shown on the right. 20
I(A)
14

U(V)
55 MMA：U2=20+0.04I2
MMA & Lift-TIG are of CC
characteristics.
TIG：U2=10+0.04I2
Output external characteristics
curve is as shown on the right. 20
10 I(A)

500

4. INSTALLATION

4.1 Installation requirements

4.1.1 Working environment

Please pay attention to the following items when choosing the installation environment：
 Avoid installation in places filled with dusts or metal powder.
 Avoid installation in places filled with corrosive and explosive gases.
 Please make sure the working environment is within －10℃～＋40℃; extra forced heat dissipation or derating
operation is required if the temperature is more than 40℃
 Humidity has to be below 90％ and of no condensed water drop
 Make sure there is no wind in the welding site; please use wind screen if necessary, or else the welding
performances may be affected.
 Please consult and confirm with Jasic qualified personnel first if there is any special installation requirements.

4.1.2 Installation space requirements

Keep the welder more than 30cm distant from the wall or any other equipment.
6
4.2 Electrical connection

Attention：
1. All electrical connection has to be carried out by qualified and licensed operators.

2. Please turn off the distribution box switch and make sure safety before any electric connection.

3．Please use required standard cables.

4．Don’t touch with wet hands.

5．Don’t place heavy items on cables.

6．Tap water pipe, house rebar may be in poor ground condition. Please don’t use them as safe ground lead.
7．Every welder is equipped with an air switch or fuse.

4.3 Front & back panel introduction

2
1 1 4
6
3
5
2
3 4

Front panel description: Back panel description:

1. Digital front panel(parameters selection, 1. Breaker（air switch）
setting and display.) 2. Wire feeder control cable connector
2. Wire feeder control cable connector 3. Software upgrade interface
3. Quick socket for positive output (connect wire 4. 3 phase power cable（4×6mm2/4×4mm2）
feeder or MMA electrode holder) 5. Socket for gas heater (Not for any other use
4. Quick socket for positive output(connect except heating gas )
MMA earth clamp) 6. Quick socket for positive output(connect wire
feeder)
7. Cooler interface

Fig 4.1

7
 4.4 Power supply input cable connection

Warning! Electric shock may result in personal death; high voltage direct current still exist
on equipment even after power-off, please do not contact the current-carrying part on
equipment.

Warning! The electric connection of equipment must be performed by qualified electrician

with qualification certificate.

Warning! Do not connect the power cord (blue /brown/black)to ground terminal. Do not
connect the ground wire (yellow/green) to power cord.

Warning! Improper power supply voltage may damage equipment.

1) This welding machine is equipped with power source voltage compensation system, so it still can work on
normally when the power source voltage varies within ±15% range of rated voltage.
2) Connect the power cord to the corresponding voltage class of distribution box according to input voltage
class of welding machine, don’t connect the voltage by mistake. Meanwhile, make sure that tolerance of
supply voltage is within the allowable range. Voltage of the product is 380V~, 50/60Hz three-phase.
3) When long cable is necessary to be used, the larger section cable is advised to be used to decrease voltage

drop；when the connecting cable is overlong, it may impose great affect on arc starting performance of

welding machine and other performance of system, so we advice you use the recommended cable length.

4）It is suggested that power cord should be H07RN-F 4X6mm2 for MIG500P and H07RN-F 4X4mm2 for

MIG350P, welding cable (approved according to EN 60245-6) should be H01N2-D 1X70/50/35mm2 and
external fuse should be 60A for MIG500P and 40A for MIG350P. The recommended MIG welding torch is
50% 500A (approved according to EN 60974-7). The recommended electrode holder is 50% 500A (approved
according to EN 60974-11).

 Make sure the switch is turned off in the distribution box before install the power supply input cable.

 Connect the welder’s input cable to the output port of distribution box switch’s. The cable connection is completed.

8
Connection of the distribution box

1. Distribution box power switch.

2. Fuse of 60A or more to be applied to machine of
500A, while fuse of 40A or more to be applied to
machine of 350A
3.Welder Cable(4*6mm2 for MIG500, 4*6mm2 for
MIG400 and MIG350）
4. Olivine Ground Cable (Ground connection! NOT
Zero Line Connection)
Please connect per the wiring map or other correct
1 wiring way. Please turn off the power supply during
2 connection.
Warning：Power Off during Connection！
4 3 ▲All connection has to be done by qualified
operators.
▲Don’t connect two welders in the same fuse-box.
▲If the cover of the machine is grounded, no ground
connection of no. # 4 cable.

4.5 Gas cylinder connection

Attention：
1. Connection has to be done by
qualified and licensed operators.
2. Please read CO2 heating gas meter’s
manual carefully before connection.

9
 4.6 Machine installation

Warning! All the connections should be conducted after making sure that power supply
is cut off. Correct sequence is to connect the bond and grounding line to the welding
machine, make sure that connection is reliable and not loose, and then connect to
power supply finally.

4.6.1 Compact machine installation

Figure 4.2
10
4.6.2 Separated machine installation

Figure 4.3

11
5. FUNCTIONS AND OPERATION

5.1 Digital front panel

1 2 4 5 8 6 3

7 9 10 11 12
Figure 5.1
Table 5-1 Digital front panel functions table

○,1DC MIG welding indicator

Errore.
○,2Pulse MIG welding indicator
Welding Errore.
method Errore.
1
selection
○,3DC MMA welding indicator
Errore.
area
Errore. ○,4Lift-TIG welding indicator

○,5Welding method selection key K3

12
 ① ○,1 current parameter indicator
Current/wi ② ○,2wire feed speed, welding piece thickness
re feed ③ indicator
speed/wor ⑤
④
kpiece ○,3time indicator: pre-flow time, post-flow
thickness/ time, or spot welding time，initial segment,
2 crater segment, up/down-slope, etc
Time
display ○,4parameter display window W1
and ⑥
selection ○,5parameters selection key K1
area
○,6parameter adjustment encoder EC1

○,1voltage parameters indicator

voltage/arc
force(MIG ①
② ○,2arc force parameter indicator
) or arc
③
force(MM ⑤
④ ○,3parameters groups set indicator
A)/parame
3
ters set
display
○,4parameter display window W2
and
selection
○,5parameters selection key K2
area
⑥
○,6parameter adjustment encoder EC2

○,1pre-flow time indicator

○,2Initial segment indicator

○,2○,3 ○,3Transition indicator from initial segment
○,4○,5 to process
Welding
○,6
processing ○,4welding primary segment
4 parameters
selection ○,5 Transition indicator from process to
area ① ⑧ ⑦ crater segment

○,6Crater segment indicator

○,7post-flow time indicator

○,8Welding process selection key K4

13
 Failure
5 Light up when there is any failure.
indicator

MMA unload status output voltage indicator.

VRD
6 Green means safe; red means danger.
indicator

○,1Al + Ar100%
①
② ○,2AlSi + Ar100%
③
○,3AlMg + Ar100%

○,1Steel + Ar80%CO220%
①
Wire & ② ○,2CrNi + Ar97.5%CO22.5%
Gas ③
7
selection ○,3SP1
area
○,1Steel + CO2100%
①
② ○,2Steel Flux-Cored + CO2100%
③
○,3Steel Flux-Cored + Ar80%CO220%

welding method selection key K5、K6

○,1Synergic status indicator: light on means

①
under synergy control. Light off means
8 Synergy “separate”
②
○,2“synergy”、“separate” status switch key
K7

○,1Φ0.8
①
② ○,2Φ1.0
Wire ③
diameter ○,3Φ1.2
9 ④
selection
area
○,4Φ1.6
⑤
○,5wire diameter selection key K7

14
 ○,1spot welding
①
MIG ② ○,22T
operation
1
mode ③ ○,34T
0
selection
④
area ○,4Special 4T
⑤
○,5operation mode selection key K8
K8 self-locking gas detection: one press and
Gas
there is gas, also indicator will light up; gas
1 detection
will stop entering automatically after 20s. If
1 key and
press again within 20s, it will stop sending
indicator
gas.
K10 self-locking wire feeding: one press and
Wire feed indicator will light up; start wire feeding by
1
key and pressing wire feed speed; press again and
2
indicator indicator will light off and it will stop wire
feeding.

5.2 Function description

Warning! Select welding function complies with demands. Select the method according
to the technological requirements of workpiece during the welding, if selects the
method improperly, unstable electric arc, large splash and sticky welding rod may
occur.

5.2.1 Parameters set

“JOB No.” refers to storage and invocation of parameters set, which can store 20 sets of parameters “0~19”. The
parameters set has priority over any other parameter because it includes all parameters that can be set by welder panel
such as welding modes and all states and parameters setting in welding mode. Each parameter adjusted will be
automatically saved in the current applied parameters set, therefore parameters of this parameters set are still the same
as last time when you turn on the machine next time. This machine is not installed specialized memory key as well as
manual storage or invocation.
Parameters set is easy-operated, because it can be switched by encoder EC2 with indicator of “parameters set” on by
pressing parameters switching key K2. By switching parameters set, corresponding parameters will show up and will
be saved automatically if they are adjusted.

15
 5.2.2 DC MIG

1、“Synergic” and “ Separate ”

DC MIG, namely standard MIG/MAG, has “synergic” and “separate” modes for welding specification adjustment:
Synergic：There are accordant current and voltage setting for any wire type, wire diameter, protective gas. same
current have different wire feed speed, workpiece thickness, and synergic voltage; after setting current or wire feed
speed, workpiece thickness, system will have an auto match for welding voltage, which saves a separate setting on
welding voltage. User can also have arc length adjustment according to real processing requirements.
After choosing “synergic”, machine panel’s left display will show preset current( or wire feed speed, workpiece
thickness);right display will show preset voltage; wire feeder panel left display will show preset current and right
display will show preset arc length; they both can set current and voltage. Standard arc length is “0”; adjustment is
based on synergic voltage, ranging between±9.9V.
Separate: current or wire feed speed, workpiece thickness adjustment has no relation with voltage adjustment and
requires separate setting.
2、Parameters setting
Under standard MIG/MAG, adjustable parameters include: pre-flow time; welding specification of process: welding
current (or wire feed speed/board thickness), welding voltage, arc force (inductance); welding specification of crater
segment: welding current (or wire feed speed/board thickness), welding voltage, arc force (inductance); post-flow time.
Welding current Welding voltage

Time wire feed speed/board thickness Pre-flow time process crater post-flow time Arc force (inductance)
Fig 5.2

Model Welding Welding Pre-flow Post-flow Arc force

current voltage time time (inductance)
MIG500P 30~500A 10~50V 0~3.0s 0~10.0s -10~10
MIG350P 30~350A 10~42V 0~3.0s 0~10.0s -10~10
Note: Different welding wire has different welding current range; with different welding wire, wire feed
speed differs even under the same current

16
 3、Operation modes
Table 5-2 DC MIG operation modes
Modes Sketch map

2T

4T

17
Repeat

Spot
weldin
g

5.2.3 Pulse MIG

1、“Synergic” and “ Separate ”

18
 Pulse MIG/MAG only has “synergic” mode, while “separate” mode is unavailable. Under “synergic”, voltage can
be adjusted with a focus on synergic voltage±9.9V.
2、Parameters setting
Under standard MIG/MAG, adjustable parameters include: pre-flow time; welding specification of initial segment:
welding current (or wire feed speed/board thickness), welding voltage, arc force (inductance); transition time from initial
to process; welding specification of process: welding current (or wire feed speed/board thickness), welding voltage, arc
force (inductance); transition time from process to crater; welding specification of crater segment: welding current (or
wire feed speed/board thickness), welding voltage, arc force (inductance); post-flow time.
Arc force: arc force range is -10~+10; 0 is the standard central value; adjust to the positive direction and arc will be
harder and weld bead will be narrower; if adjust to the negative direction, arc will be softer and weld bead will be
broadened; arc force can be set respectively at welding process, initial and crater.

Welding current Initial segment Transition time Welding voltage

Time Wire feed speed/board thickness Pre-flow time Process Crater Post-flow time Arc force (inductance)
Fig 5.3
Model Welding Welding Transition Pre-flow Post-flow Arc force
current voltage time time time (inductance)
MIG500P 30~500A 10~50V 0.1~3.0s 0~3.0s 0~10.0s -10~10
MIG350P 30~350A 10~42V 0.1~3.0s 0~3.0s 0~10.0s -10~10
Note: Different welding wire has different welding current range; with different welding wire, wire feed
speed differs even under the same current
3、Operation modes
Table 5-3 Pulse MIG operation modes
Modes Sketch map

2T

19
2T
with
initial
&
crater

4T

20
4T
with
initial
segmen
t

Special
4T(pro
gram
4T)

21
 Spot
weldin
g

Note:

○,1 Initial segment：Initial segment of 2T and 4T is set for automation welding. Welding specification of this

segment is -50%~+100% of that of process, displaying “0.5~2.0” at initial current with 0~10s. When time is set as 0,
initial segment is off. So if initial segment is needed, it is recommended to set as 1.30 with 0.5s. Initial segment of
program 4T can be set freely without being affected by process.

○,2Crater phase：It is applied to fill in the crater. This segment can be set freely but the specification is usually
smaller than that of process.

22
5.2.4 MMA welding

Under MMA welding for coated electrode, three parameters including hot start current, welding current and
arc-force current are adjustable on digital panel. Hot start current is at “initial segment” of “welding process selection
zone”; welding current is at “process” of “welding process selection zone”; arc-force current is at “MIG arc force, MMA
Arc-force current indication” of “Voltage/arc force/parameters set, etc displaying and setting zone”.

If
I Ih
地

Ia

th 2s

U U0

UVRD

Fig 5.4 MMA processing

1、 Ih(hot start current) = IΔh（arc start current）+ Ia(welding current); Fixed hot start time: th = 500ms
2、 If(arc-force current)= IΔf(arc-force current)+ Ia(welding current);Arc-force current should be set based on
electrode diameter, set current and process requirement. With strong arc force, droplet transfer is so fast that it
can be anti-stick, but too strong arc force can increase the spatter; with low arc force, spatter is reduced and
weld bead has nice shape, but arc is weak or electrode is easily stuck. Therefore, arc force should be increased
when welding with thick electrode under low current. Generally, arc force is 2070 during welding.
3、 After short-circuit time is over 2s, anti-stick current of 25A comes out until electrode is separated from the
workpiece;
4、 UVRD, VRD of about 15V, conforming to Australian standard 1674.2 2007, is switched off by default. After
being switched off, welder outputs no-load voltage U0 when MMA welding is not started.
5、
Model Hot start Welding Arc-force Max current
current current current limit
MIG500P 0~250A 30~500A 0~250A 550A
MIG350P 0~200A 30~350A 0~200A 400A
Note: Max current limit limits Ih and If.

23
5.2.5 Lift-TIG welding

Simple TIG, namely lift TIG, is simple DC TIG realized by lift TIG or scratch TIG with help of necessary gas circuit
device, but operation modes and functions of torch trigger for common TIG are unavailable for simple TIG.
Simple TIG can set only welding current: 30A~500/350A, while fixed shorted current is 25A.

Short circuit Arcing

U U0

UVRD

Fig5.5 Simple TIG processing

Warning! During welding, it is forbidden to pull off any plug or cable in use,
or it will lead to life-threatening danger and severe damage of the machine.

5.3 Selection and adjustment of internal parameters

● Please be careful of the internal parameters that are applied to factory calibration and adjustment on the basis
of special requirements of professional personnel, otherwise it will result in welder failure.

5.3.1 Adjustment on burn-back coefficient

Under pulse MIG, preset burn-back parameters in the welder usually can satisfy normal burn-back removal of
metallic ball, but users can adjust burn-back coefficient if necessary. Below are adjustment steps:
1、Select welding post-flow segment;2、Switch time LED to speed/board thickness LED. At this time, the left
segment displays 1.00; 3、It can be adjusted between 0.50~1.50 by left encoder. Within 0.50~1.50, if it is decreased,
burn-back time is long, if it is increased, burn-back time is short. This parameter will be applied to all welding wires and
it is 1.0 by default after welder is restarted.

24
 2

3 Fig 5.6 1

5.3.2 Other internal parameters:

Backend parameter mode where calibration of current and voltage, VRD and cooler switch are available can be
activated when this machine is switched on. Below are steps:
1、Press K2 button on the panel to switch power on, segment display W1 shows “001”, W2 shows “CAL” and
K2 can be released;
2、At this time, segment display W1 shows “P01”, representing “parameter 1”, while segment display W2
shows the value of “parameter 1”;
3、Pressing K1 can switch parameters in order, rotate encoder EC2 to adjust current parameters, press K2 to
save and exit.

K1 to switch parameter No. W1 to display parameter No. W2 to display parameter value K2 to activate backend and save

EC2 to adjust parameters

value
Fig 5.7
Table 5-4 Backend parameters table
Paramet Parameter definition
Parameter value Remark
er No.
P1 Actual current calibration
P2 Display current calibration Please do
P3 Display voltage calibration
not change!
P4 Actual voltage calibration

25
 P5 Wire feed speed and board thickness
0:speed; 1:board thickness
setting
P6 Metric unit and English unit setting 0:metric system; 1: English system
P7 Current temperature of inverter
P8 High speed（22m/min）calibration of
wire feed speed
P9 Low speed（2m/min）calibration of
wire feed speed
P11 V.R.D switch 0:V.R.D is off；1:V.R.D is on
P12 Water system switch 0: water system is off; 1: water
system is on
P15 Welder overheating protection point Protective temperature setting
setting around IGBT
P22 Speed adjustment It is defaulted as 1.00, which can be Please do
adjusted to 0.50~1.50 times of
not change!
current speed.
P24 Slow wire feeding adjustment 0~10.0，plus slow feeding speed.
P23 Factory reset 0: unchanged; 1: factory reset
Note：Unprofessional personnel cannot adjust the internal parameters unless there is professional guidance.

6. OPERATION PRECAUTIONS

6.1 Precautions

Warning! Crash down may cause equipment damage or personal injury. Refer to
transporting and placing methods marked on the external packing of equipment,
handle the equipment with trolley or similar handling equipment which has adequate
carrying capacity.

1) Machine lifting: use fork lift truck or crane for machine lifting. This machine has no hanging rings; please pay
attention to the fixture when lift the machine with crane.
2) input cable specs：To connect distribution box and machine, the cable has to be 4×6 mm2 for MIG500 and 4×4
mm2for MIG350/400. The breaker or fuse in distribution box has to be bigger than 60A for MIG500 and 40A for
MIG350/400.
3) Grounding: please connect machine input cables yellow-green wire to PGND.
4) Cooling type: air cooling. Please make sure machine is well ventilated and there is nothing on the way of inlet
and outlet.
5) IP class：IP23。
6) duty circle：Machine will stop welding output when under over-heat protection.
7) Power source inclination angle: less than 15°or machine can easily topple over.
8) Working environment: should meet the following requirements:
a) temperature : During welding -10℃～+40℃，
26
 During transportation and storage -25℃～+55℃
Remark: when using the radiator, please avoid using or storage under coolant’s solidification temperature.
Please make sure there is no coolant left in the radiator for storage under low temperature.
b) Relative air humidity: less than 50% when under 40℃; less than 90% when under 20℃.
c) The dust, acid and corrosive gas and matters in the air cannot exceed normal standard, excluding those
matters generated from normal welding.
9) Do not use this machine for pipe unfreezing.
10）don’t let hand, hair or other tools to contact live parts when machine is powered on, eg, fan, so that to avoid any
injury or machine damage.
11）avoid water or vapour entering machine inside; in case it happens, please dry the machine internal structure.
Then use a mega-meter to test machine’s insulation (including wire to wire connection and wire to machine enclosure
connection.). Welding can be resumed only after the confirmation of no abnormity.
12) There are rated duty circle for both machine and torch. Please do not over-load them.
13) Please use proper welding cable: when cable size is too small, there will be insufficient current, therefore,
unstable arc; there is no output rating and cable can be easily burned.
14) Please guarantee the connection is correct; please pay attention to polarity during connection.
15) Water cooling torch: please make sure coolant pressure and water flow is under 1-2kg/cm2 so that to avoid
burning the torch. Even under low current welding, the torch needs to be water-cooled, or else no welding can be
carried out.
16) Unblocked gas pipe and water pipe: torch burnt and welding defect might be caused if there are heavy items
being placed on water pipe or gas pipe, or the pipes are bent and there is no gas flow and water flow.
17) Take good care of the torch: inappropriate torch operation can cause wire disconnection, water-leak, gas leak or
nozzle failure.
18) There might be gas leak or lack of gas flow on torch nozzle if flowmeter or gas pipe connection is not tight
enough, which might affect gas protection effects and cause weld porosity. Please check if there is any gas detection with
soap-suds.
19) Reliable grounding: please make sure the ground connection between machine and power supply, machine and
torch, electrode holder, wire feeder, ground cable; all control cables have to be well connected. If there is any poor
connection, failure might be caused, which in return brings machine abnormity, burnt or other failures.
20) Connection with workpiece: if people use steel plate and steel bar to replace the cable which connecting the
workpiece, the resistance is large and welding current is not stable; moreover, over-heat can easily cause fire hazard.
Please use correct insulation cable and workpiece for reliable connection.
21) Please pay attention to anti-wind measure if there is wind in the working environment. Or protective gas can be
blown away and weld porosity can be caused.
22) Welding workpiece surface has grease, rust, paint, water or other items or pollution. Please remove them, or else
weld porosity and crack can be cause and it will affect welding effects.
Warning! Over-current/over-voltage/over-heating protection circuit is installed in this
machine. When the network voltage, output current or inner temperature exceeds the
setting standard, the machine will stop working automatically. However, excessive
operation (over voltage) will lead to welder damage.

6.2Maintenance

Warning! All of the maintenance must be carried out after power source is
disconnected completely. Please check and confirm the power source plug has already
unplugged before opening housing case.

1) Periodical cleaning of internal dust: too much dust will lower the machine’s insulation performance and can have
direct threats to human safety and machine safety. Pleas have at least twice cleaning each year. If the machine is
27
 working in dense smoke and heavily polluted environment, please dedust the machine every day. Please cut off power
supply before cleaning; remove side cover and tope cover, and use dry compressed air to remove the dustfollowing the
direction of top to below. The compress air pressure should be reasonable so that to avoid any damage on machine’s
small components. Please use a cloth to remove the oil.
2） Periodical check on machine’s internal circuit connection and make sure they are correct and tightly
connected(especially those inserting connectors or components) if there is any rust or loosening parts, please use a
sandpaper to remove the rust layer or oxidation layer and connect them tightly.
3）Periodical check on cables and check if there is any worn cable insulation skin; if yes, please fix them or replace
the cable with new ones.
4) Periodical check on machine’s insulation resistance: mainly checking machine’s insulation resistance between
power input and output, also between power input and enclosure, which should be bigger than 10ΜΩ
5）please store the machine in the original packing box and place it in dry environment if the machine will not be
used for a long time.

6.3 Troubleshooting

Warning! The following operation requires the operator must have adequate
professional knowledge in electrics and overall safety common sense, and hold the
valid qualification certificate to support his competence and knowledge. Please check
and confirm the power source plug has already unplugged before opening housing
case.

Remark: the following operation has to be carried out by qualified personnel who have enough knowledge on electric
field and safety .operators has to be equipped with valid certificates which can prove his or her capability
and knowledge.
· Please make sure the machine input cable and power grid is cut off before opening the machine.

· The below examples might be related with the components, gas, working environment, and power supply
conditions. Please try your best to improve them so that to avoid the similar problems.

6.3.1 General troubleshooting

Warning! The welder may be damaged during use, and should be repaired in time.
Only professionally trained personnel can repair the welder, or else it may further
expand the scope of the failure or cause damage to more expensive components.

Table 6-1 common problems and troubleshooting

phenomenon Reasons Suggested solutions

· Power cable is not well
No display when power · connect well the power supply
connected
on the machine ·ask for professional help
· Machine failure

28
Fan is not working or · 3 phase power cable is · connect well the 3 phase power cable
abnormal rotating well connected ·solve the power input phase loss
speed during welding ·phase loss ·resume operation after input voltage is back to
· input voltage is too low normal
·overheat protection
E60 · Auto recovery after machine is cooled down.
（thermoswitch）
·over-heat protection
E61 ·Auto recovery after machine is cooled down
（temperature probe）
· Machine can resume to work when power grid input
· low supply voltage
voltage is back to normal.
E31 · failure on auxiliary power
· replace the new control board or industrial frequency
supply
transformer
The left
· Over current or failed · restart the machine; if over-current still exists, please
display shows E10
power components contact Jasic service man.
“EXX” ， and
· Please check if there is not enough water in the
right display
E71 · Failure on water flow radiator and check if water flow is under good
shows“---”
condition.
· Radiator is over-heated; stop welding until the
· Water cooler over-heat
radiator is cooled off and problem is solved.
E70 · The radiator is not well
· Please do checking after turn off the machine; or there
connected to the welder
might be danger of electric shock hazard.
· connect tight the control cable; if the problem still
· Wire feeder
E52 cannot be solved, please contact Jasic service
communication failure
center.

6.3.2 MIG problems and troubleshooting

Table 6-2 MIG problems and troubleshooting.

Failures or problems Analysis Solutions suggested

· please check welding loop and fix the
· failure on welding loop
Machine has no current according problem
· failed current feedback inside the
output and no failure · Please contact Jasic service center for
machine
professional solutions.
· replace or fix the worn wire feeder
There is gas and current · worn wire feeder control cable
control cable.
output when push torch · stuck wire feeder
· make sure wire feeder is not stuck
trigger, but no wire ·failure on wire feeder
· fix wire feeder
feed. · failed machine control board.
· replace control board

Welding current is · inappropriate wire feeder moment knob · please adjust the suitable wire feeder
unstable adjustment moment force

29
 · unmatched wire feed rolls and wire size · please make sure wire feed rolls and
· seriously worn contact tip wire match
· seriously worn wire guide tube in the · replace torch contact tip
torch · replace the torch’s wire guide tube
·poor quality wire · change a better quality wire
· Heater connector is not well connected. ·connect well the heater
· shorted circuit in the heater · fix heater electric wire
Regulator heater is not
·machine auto-protection· failure heating ·restart the machine back panel
working
appliance inside the heater over-current protector
· replace regulator
Note: Above situations may be related to accessories, gas, environment and power supply applied by users. Please
try to improve the condition to avoid similar problems.
Warning! Blind experiment and careless repair may lead to more problem of the
machine that will make formal check and repair more difficult. When the machine is
electrified, the naked parts contain life-threatening voltage. Any direct and indirect
touch will cause electric shock, and severe electric shock will lead to death.

6.4 Welding processing reference (for reference only)

Welding stability, quality and productivity depend on suitable welding current and arc voltage. In order to ensure
welding quality, welding current should match arc voltage according to wire diameter, required droplet transfer form and
productivity.

6.4.1 MMA processing parameters for coated electrode

Table 6-3
Weldment Weld of the first layer Weld of other layers Sealing weld

Weld thickness or Electro

posit welding foot Electrode Welding de Welding Electrode Welding
ion dimension diameter/mm current/A diamet current/A diameter/mm current/A
/mm er/mm

2 2 55～60 ～ ～ 2 55～60

Squa 2.5～3.5 3.2 90～120 ～- ～ 3.2 90～120

re 3.2 100～130 ～ ～ 3.2 100～130

butt 4～5 4 160～200 ～ ～ 4 160～210

weld 5 200～260 ～ ～ 5 220～250

5～6 4 160～210 ～ ～ 3.2 100～130

30
 4 180～210

4 160～210 4 180～210
≥6 4 160～210
5 220～280 5 220～260

4 160～210 ～ ～
.12 4 160～210
5 220～280 ～ ～

2 2 50～55 ～ ～ 2 50～55

2.5～4 3.2 80～110 ～ ～ 3.2 80～110

5～6 3.2 90～120 ～ ～ 3.2 90～120

3.2 90～120
Verti 7～10 4 120～160 3.2 90～120
4 120～160
cal
3.2 90～120 4 120～160
butt ≥11 3.2 90～120
4 120～160 5 160～200
weld
3.2 90～120
12～18 4 120～160 ～
4 120～160

3.2 90～120 4 120～160

≥19 ～
4 120～160 5 160～200

2 2 50～55 ～ ～ 2 50～55

2.5 3.2 80～110 ～ ～ 3.2 80～110

3.2 90～120 ～ ～ 3.2 90～120

3～4
Tran 4 120～160 ～ ～ 4 120～160

svers 3.2 90～120 3.2 90～120

5～8 3.2 90～120
e 4 140～160 4 120～160

butt 3.2 90～120 3.2 90～120

≥9 4 140～160
weld 4 140～160 4 120～160

3.2 90～120
14～18 4 140～160 ～
4 140～130

≥19 4 140～160 4 140～160 ～

2 ～ ～ ～ ～ 2 50-65

2.5 ～ ～ ～ ～ 3.2 80-110

3.2 90-110
3～5 ～ ～ ～ ～
4 120-100
Over
3.2 90-120 3.2 90～120 ～
head 5～8
4 140～160
butt
3.2 90-120
weld ≥9 4 140～160 ～
4 140-160

3.2 90-120
12～18 4 140～160 ～
4 140-160

≥19 4 140-160 4 140～160

31
 2 2 55-65 ～ ～

Fillet 3 3.2 100～120 ～ ～

weld 3.2 100～120 ～ ～

4
in 4 160～200 ～ ～

the 4 160～200 ～ ～
5～6
horiz 5 220～280 ～ ～
ontal 4 160～200
≥7 5 220～230
posit 5 220～280
ion 4 160～200
～ 4 160～200 4 160～220
5 220～280

Fillet 2 2 50～60 ～ ～

weld 3～4 3.2 90～120 ～ ～

in 3.2 90～120 ～ ～
5～8
the 4 120～160

verti 3.2 90～120

9～12 4 120～160
cal 4 12～0160
posit 3.2 90～120
～ 4 120～160 3.2 90～120
ion 4 120～160

Fillet 2 2 50～60 ～ ～

weld 3～4 3.2 90～120 ～ ～

in 5～6 4 120～160 ～ ～
the ≥7 4 140～160 4 140～160
over 3.2 90～120 3.2 90～120
head
～ 4 140～160
posit 4 14～0160 4 140～160
ion

6.4.2 MIG processing parameters

Table 6-4 CO2 welding nozzle distance and gas flow

Wire Welding Nozzle
Gas flow L/min
diameter/mm current/A distance/mm
100 10～15 15～20
1.2 200 15 20
300 20-25 20
300 20 20
1.6
350 20 20

32
 400 20～25 20～25

Table 6-5-1 CO2 welding （solid wire）

type Workp Wire dia Root gap Welding Welding Welding Distance Gas flow
iece Φ(mm) g(mm) current voltage speed between （L/min）
thickn （A） (V) （cm/mi contact tip
ess(m n） and
m) workpiece
（mm）
0.8 0.8 0 60-70 16-16.5 50-60 10 10
1.0 0.8 0 75-85 17-17.5 50-60 10 10-15
1.2 0.8 0 80-90 17-18 50-60 10 10-15
1.6 0.8 0 95-105 18-19 45-50 10 10-15
1.0 0-0.5 120-130 19-20 50-60 10 10-20
2.0 1.0 1.2 0-0.5 110-120 19-19.5 45-50 10 10-15
I type butt 2.3 1.0 1.2 0.5-1.0 120-130 19.5-20 45-50 10 10-15
welding 1.2 0.8-1.0 130-150 20-21 45-55 10 10-20
（low 3.2 1.0 1.2 1.0-1.2 140-150 20-21 45-50 10-15 10-15
speed 1.2 1.0-1.5 130-150 20-23 30-40 10-15 10-20
condition 4.5 1.0-1.2 1.0-1.2 170-185 22-23 45-50 15 15
） 1.2 1.0-1.5 150-180 21-23 30-35 10-15 10-20
1.2-1.5 230-260 24-26 45-50 15 15-20
6 1.2
1.2-1.5 200-230 24-25 30-35 10-15 10-20
1.2 0-1.2 300-350 30-35 30-40 15-20 10-20
8
1.6 0-0.8 380-420 37-38 40-50 15-20 10-20
9 1.2 1.2-1.5 320-340 32-34 45-50 15-20 10-20
12 1.6 0-1.2 420-480 38-41 50-60 20-25 10-20
0.8 0.8 0 85-95 16-17 115-125 10 15
I type butt
1.0 0.8 0 95-105 16-18 115-125 10 15
welding
1.2 0.8 0 105-115 17-19 115-125 10 15
（high
1.6 1.0 1.2 0 155-165 18-20 115-125 10 15
speed
2.0 1.0 1.2 0 170-190 19-21 75-85 15 15
condition
2.3 1.0 1.2 0 190-210 21-23 95-105 15 20
）
3.2 1.2 0 230-250 24-26 95-105 15 20

Table 6-5-2 CO2 welding （solid wire）

Type Work Wire dia Root gap trunca Welding layer Welding Welding Gas
piece Φ(mm) g(mm) ted welding voltage speed flow
thickn edge current（A） (V) (m/min) （L/mi
ess n）
(mm)
V type outer 1 300-350 30-40
12 1.2 0-0.5 4-6 32-35 20-25
butt inner1 300-350 45-50

33
welding outer 1 380-420 35-40
1.6 36-39 20-25
inner1 380-420 45-50
outer 1 300-350 25-30
1.2 32-35 20-25
inner1 300-350 30-35
16 0-0.5 4-6
outer 1 380-420 30-35
1.6 36-39 20-25
inner1 380-420 35-40
outer 1 300-350
1.2 32-35 30-50 20-25
inner1 300-350
16 0 4-6
outer 1 380-420
1.6 36-39 35-40 20-25
inner1 380-420
X type
outer 1 400-450 25-30
butt 36-42 20-25
inner1 400-450 25-30
welding 19 1.6 0 5-7
outer 1 400-420 45-50
36-39 20-25
Inner2 400-420 35-40
outer 1 400-420 36-39 40-45
25 1.6 0 5-7 20-25
Inner2 420-450 39-42 30-35

Table 6-5-3 CO2 welding （solid wire）

Type Workpie Wire Leg Weldin Weldi Weldin The Gas Weld
ce diameter size(mm) g ng g speed distance flow ing
thickness Φ(mm) current voltag cm/min between L/min angle
(mm) （A） e contact tip
V and
workpiece
（mm）
1.0 0.8 2.5-3 70-80 17-18 50-60 10 10-15 45°
1.2 1.0 3-3.5 85-90 18-19 50-60 10 10-15 45°
1.6 1.0 1.2 3-3.5 100-110 18-19. 50-60 10 10-15 45°
5
2.0 1.0 1.2 3-3.5 115-125 19.5-2 50-60 10 10-15 45°
0
T type 2.3 1.0 1.2 3-3.5 130-140 19.5-2 50-60 10 10-15 45°
flat fillet 1
welding 3.2 1.0 1.2 3.5-4 150-170 21-22 45-50 15 15-20 45°
（low 1.0 1.2 4.5-5 180-220 21-23 40-45 15 15-20 45°
4.5
speed 1.2 5-5.5 200-250 24-26 40-50 10-15 10-20 45°
conditio 5-5.5 230-260 25-27 40-45 20 15-20 45°
n） 6 1.2 6 220-250 25-27 40-45 13-18 10-20 45°
4-4.5 270-300 28-31 60-70 13-18 10-20 45°
8，9 1.2 1.6 6-7 270-380 29-35 40-45 25 20-25 50°
1.2 5-6 270-300 28-31 55-60 13-18 10-20 45°
8 1.2 7-8 260-300 26-32 25-35 15-20 10-20 50°
1.6 6.5-7 300-330 30-34 30-35 15-20 10-20 50°
12 1.2 1.6 7-8 270-380 27-35 27-40 20-25 20-25 50°

34
 1.2 7-8 260-300 26-32 25-35 15-20 10-20 50°
1.6 6.5-7 300-330 30-34 30-35 15-20 10-20 50°
T type 1.0 0.8 2-2.5 130-150 19-20 140-145 10 15 45°
flat fillet 1.2 1.0 3 130-150 19-20 105-115 10 15 45°
welding 1.6 1.0 1.2 3 170-190 22-23 105-115 10 15-20 45°
（high 2.0 1.2 3.5 200-220 23-25 105-115 15 20 45°
speed 2.3 1.2 3.5 220-240 24-26 95-105 20 25 45°
conditio 3.2 1.2 3.5 250-270 26-28 95-105 20 25 45°
n） 4.5 1.2 4.5 270-290 29-31 75-85 20 25 50°
6 1.2 5.5 290-310 32-34 65-75 25 25 50°

Table 6-6 MAG welding（solid wire，Ar 80% + CO2 20%）

type Work Wire dia Width of Welding Welding Welding The Gas flow
piece Φ(mm) welding current voltage speed distance (L/min)
thick seam （A） (V) (cm/min) between
ness( g(mm) contact tip
mm) and
workpiece(
mm)
1.2 0.8 0 60-70 15-16 30-50 10 10-15
I type
1.6 0.8 0 100-110 16-17 40-60 10 10-15
butt
3.2 0.8 1.2 1.0-1.5 120-140 16-17 25-30 15 10-15
welding
4.0 1.0 1.2 1.5-2.5 150-160 17-18 20-30 15 10-15
0.6 0.8 2 70-80 17-18 50-60 10 10-15
T type 1.0 1.0 2-2.5 85-90 18-19 50-60 10 10-15
flat fillet 1.6 1.0 1.2 3 100-110 18-19.5 50-60 10 10-15
welding 2.4 1.0 1.2 3.5 115-125 19.5-20 50-60 10 10-15
3.2 1.0 1.2 4 130-140 19.5-21 50-60 15 10-15

Table 6-7 flux-cored wire parameters

Flux type Weldi Wire dia Leg Welding Welding Weldin Welding Swing
ng Φ(mm) size(mm) beads current g speed
positio （A） voltage （cm/min
n (V) ）
1.2 1 240-260 26-28 48-53 N
1.4 4 1 320-340 28-30 95-105 N
1.6 1 340-360 30-32 100-110 N
1.2 1 260-280 28-30 48-53 N
Metal 1.4 5 1 330-340 29-31 85-95 N
1.6 1 360-380 32-34 85-95 N
1.2 1 260-280 27-29 40-45 N
1.4 6 1 320-340 30-32 75-85 N
1.6 1 370-390 33-35 75-85 N

35
 1.2 1 270-180 29-31 38-43 N
1.4 7 1 340-360 31-33 48-53 N
1.6 1 370-390 33-35 60-70 N
9 1 260-280 27-26 22-26 Y
1 320-340 30-32 38-42 N
1.4
12 2 320-340 30-32 40-44 N
3 320-340 29-31 48-52 N
9 1 260-280 22-29 23-27 N
1.2
12 1 290-310 30-32 33-37 N
1.2 2 290-310 30-32 27-31 Y
4 - 210-230 26-28 68-72 -
6 - 260-280 28-30 48-52 -
8 - 290-310 29-31 33-37 -
4 - 250-270 27-29 68-72 -
Titanium
1.4 6 - 310-330 30-32 48-52 -
calsium
8 - 340-360 32-34 33-37 -
Vertica 4 - 170-190 21-23 48-52 -
l angle 6 - 190-210 22-24 48-52 -
1.2
weldin 8 - 210-230 22-24 43-47 -
g

If welding conditions are not suitable, problems in table 6-8 will happen.

Table 6-8 Common MIG failure table

Inappropriate
Inappropriate welding
welding effects effects
conditions
conditions
Arc is long Arc is too long
Long wire Weld bead is wide Weld bead is wide
Arc voltage is too high
extension Gas shielding effects will be Bigger penetration and excess weld
poor metal
Arc is short Sticking, spatter
Short wire spatter Weld bead is narrow
Arc voltage is too low
extension Smaller penetration and excess weld
metal
Weld bead is wide Weld bead is narrow
Welding current is Welding speed is too
Bigger penetration and excess Smaller penetration and excess weld
too big high
weld metal metal
Wire extension：the distance between torch contact tip and workpiece.

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 6.5 After sales service

Warranty card
There is a warranty card in every machine. Please fill in the according information on the card.
Please read carefully the content and keep the card well.
Maintenance
Please do the preliminary troubleshooting or record the according failure information according to common
problems analysis and troubleshooting solutions in table 6-1 and 6-2.
If there is any fixture or components replacement needed, please contact local distributors. Please use those
accessories or spare parts which are recommended by Shenzhen Jasic Technologies Co., Ltd.

This machine is covered for one year defect liability period, starting from the purchasing day on the warranty card or
purchasing contract. Any machine failure which are caused by abnormal and inappropriate usage are not included in the
free warranty scope, but can be fixed with extra charge.

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7.Wiring Diagram

38
This product is being improved, therefore other parts, except for functions and operation, may be
different. Your understanding would be greatly appreciated.

39
40