AlandWelding Digi-Tig200ACDC PULS User manual

THANKS FOR PURCHASING PRODUCT
Operator's Manual
Safety, Setup and General Use Guide
REV.1 0 00137-15
Manual No.：0-1527
Issue Date: Dec. 9, 2015
IGBT INVERTER
AC TIG/DC TIG
WELDING MACHINE
（BE SUITABLE FOR 1x110V or1x 220V）
DC MMA

Dear Customer,
Thank you for selecting the our machine. We appreciate you as a customer and hope that you
will enjoy years of use from your welder.
Please go directly to the our website to register your unit and receive your warranty information. Your
unit registration is important should any information such as product updates or re-calls be issued. It is also
important so that we may track your satisfaction with our products and services. If you are unable to register
by website, contact our directly through the sales department through the main customer service number in
your country. Your unit will be registered and warranty will be issued and in full effect. Keep all information
regarding your purchase. In the event of a problem you must contact technical support before your
welder can be a candidate for warranty service and returned.
Please review the current online warranty statement and information found on the website of the
our division located in or nearest to your country. Print it for your records and become familiar of its
terms and conditions.
We offers full technical support, in several different forms. We have online support available through
email, and a welding support forum designed for customers and noncustomer interaction. Technical advisors
are active on the forum daily. We also divide our support into two divisions: technical and welding
performance. Should you have an issue or question concerning your unit, please contact performance/
technical support available through the main company headquarters available in your country. For best
service call the appropriate support line and follow up with an email, particularly if off hours, or you cannot
reach a live person. In the event you do not reach a live person, particularly during heavy call volume times,
holidays, and off hours, leave a message and your call will normally be returned within 24 hours. Also for
quick answers to your basic questions, join the company owned forum available through the website.
Should you need to call or write, always know your model name, purchase date and welder manu-
facturing inspection date. This will assure the quick and accurate customer service. REMEMBER: Be as
specific and informed as possible. Technical and performance advisors rely upon you to carefully
describe the conditions and circumstances of your problem or question. Take notes of any issues
as best you can. You may be asked many questions by the advisors to clarify prob-lems or issues
that may seem very basic. However, diagnosis procedures MUST be followed to begin the warranty
process. Advisors can't assume anything, even with experienced users, and must cover all aspects
to properly diagnose the problem. Depending upon your issue, it is advisa-ble to have basic tools
handy such as screwdrivers, wrenches, pliers, and even an inexpensive test meter with volt/ohm
functions before you call.
Let us know how we may be of service to you should you have any questions.

We want you to take pride in operating our machine as much pride as we have taken in making this
product for you. Please read all information in this manual before operation
PLEASE EXAMINE CARTON AND EQUIPMENT FOR DAMAGE IMMEDIATELY
When this equipment is shipped, title passes to the purchaser upon receipt from the courier. Consequently
all claims for material damaged in shipment must be made by purchaser against the transportation company
used.
Please record your equipment identification below for future reference. This information can be
found on data plate at rear of machine.
：
Product Digi-Tig200ACDC PULS
Serial No. ___________________________________
Date of Purchase _____________________________
Where Purchased _____________________________
Whenever you request replacement parts or information on this equipment please always supply information
you have recorded above
This product is covered by 1 years parts and labour warranty, you are responsible for costs of shipping unit
to us, we will cover cost of returning item to you. External items, torch, earth lead etc are covered by 3
months warranty. Any faults/damage found caused by customer will be charged prorata.
Pay particular attention to the safety instructions we have provided you for your protection The level of
seriousness to be applied to each section is explained below
WARNING
This statement appears where the information must be followed exactly to avoid serious personal injury.
CAUTION
This statement appears where the information must be following to avoid a minor personal injury or damage
to this equipment.

We are dedicated to providing you with the best possible equipment and service to meet the demanding
jobs that you have. We want to go beyond delivering a satisfactory product to you. That is the reason we
offer technical support to assist you with your needs should an occasion occur. With proper use and care
your product should deliver years of trouble free service.
Safe operation and proper maintenance is your responsibility.
We have compiled this operator's manual, to instruct you in basic safety, operation and maintenance of
our product to give you the best possible experience. Much of welding and cutting is based upon
experience and com-mon sense. As thorough as this welding manual may be, it is no substitute for either.
Exercise extreme caution and care in all activities related to welding or cutting. Your safety, health and even
life depends upon it. While accidents are never planned, preventing an accident requires careful planning.
Please carefully read this manual before you operate machine.
This manual is not only for the use
of the machine, but to assist in obtaining the best performance out of your unit. Do not operate the unit
until you have read this manual and you are thoroughly familiar with the safe operation of the unit. If you feel
you need more information please contact our Support.
The warranty does not cover improper use, maintenance or consumables. Do not attempt to alter or
defeat any piece or part of your unit, particularly any safety device. Keep all shields and covers in
place during unit operation should an unlikely failure of internal components result in the possible presence
of sparks and explosions. If a failure occurs, discontinue further use until mal-functioning parts or
accessories have been repaired or replaced by qualified personnel.
Note on High Frequency electromagnetic disturbances:
Certain welding and cutting processes generate High Frequency (HF) waves. These
waves may disturb sensitive electronic equipment such as televisions, radios, computers, cell
phones, and related equipment. High Frequency may also interfere with fluorescent lights.
Consult with an electrician if disturb-ance is noted. Sometimes, improper wire routing or poor
shielding may be the cause.
HF can interfere with pacemakers.See EMF warnings in following safety sec-tion for
further information. Always consult your physician before entering an area known to have
welding or cutting equipment if you have a pacemaker.
MOVING PARTS can cause injury.
Moving parts, such as fans, rotors, and belts can cut fingers and hands and catch loose
clothing.
Do not put your hands near the engine fan. Do not attempt to override the governor or idler by
pushing on the throttle control rods while the engine is running.
SAFETY PRECAUTIONS

These safety precautions are for protection of safety and health. Failure to follow these
guidelines may result in serious injury or death. Be careful to read and follow all cautions and
warnings. Protect yourself and others.
Welding and cutting processes produce high levels of ultraviolet (UV) radiation that can
cause severe skin burn and damage.There are other potential hazards involved with welding
such as severe burns and respiratory related illnesses. Therefore ob-serve the following to
minimize potential accidents and injury:
Use appropriate safety glasses with wrap around shields while in the work area, even
under welding helmets to protect your eyes from flying sparks and debris.When chip-ping
slag or grinding, goggles and face shields may be required.
When welding or cutting, always use an approved shielding device, with the correct
shade of filter installed. Always use a welding helmet in good condition. Discard any broken
or cracked filters or helmets. Using broken or cracked filters or helmets can cause severe eye
injury and burn. Filter shades of no less than shade 5 for cutting and no less than shade 9 for
welding are highly recommended. Shades greater than 9 may be required for high amperage
welds. Keep filter lenses clean and clear for maxi-mum visibility. It is also advisable to consult with your eye
doctor should you wear contacts for corrective vision before you wear them while welding.
Do not allow personnel to watch or observe the welding or cutting operation unless fully
protected by a filter screen, protective curtains or equivalent .protective equip-ment. If no
protection is available, exclude them from the work area. Even brief expo-sure to the rays from
the welding arc can damage unprotected eyes.
Always wear hearing protection because welding and cutting can be extremely noisy. E
ar protection is necessary to prevent hearing loss. Even prolonged low levels of noise has
been known to create long term hearing damage. Hearing protection also further protects
against hot sparks and debris from entering the ear canal and doing harm.
Always wear personal protective clothing. Flame proof clothing is required at all times.
Sparks and hot metal can lodge in pockets, hems and cuffs. Make sure loose clothing is tucked
in neatly. Leather aprons and jackets are recommended. Suitable welding jackets and coats
may be purchased made from fire proof material from welding supply stores. Discard any
burned or frayed clothing. Keep clothing away from oil, grease and flammable liquids.
Leather boots or steel toed leather boots with rubber bottoms are required for ade-quate
foot protection. Canvas, polyester and other man made materials often found in shoes will
either burn or melt. Rubber or other non conductive soles are necessary to help protect from
electrical shock.
Flame proof and insulated gauntlet gloves are required whether welding or cutting or
handling metal. Simple work gloves for the garden or chore work are not sufficient. Gauntlet
type welding gloves are available from your local welding supply companies. Never attempt to
weld with out gloves. Welding with out gloves can result in serious burns and electrical shock.
If your hand or body parts comes into contact with the arc of a plasma cutter or welder, instant
and serious burns will occur. Proper hand protection is required at all times when working
with welding or cutting machines!
SAFETY PRECAUTIONS

WARNING! Persons with pacemakers should not weld, cut or be in the welding area
until they consult with their physician. Some pacemakers are sensitive to EMF radiation and
could severely malfunction while welding or while being in the vicinity of someone welding.
Serious injury or death may occur!
Welding and plasma cutting processes generate electro-magnetic fields and
radiation. While the effects of EMF radiation are not known, it is suspected that there may be
some harm from long term exposure to electromagnetic fields. Therefore, certain pre-cautions
should be taken to minimize exposure:
* Lay welding leads and lines neatly away from the body.
* Never coil cables around the body.
* Secure cables with tape if necessary to keep from the body.
* Keep all cables and leads on the same side the body.
* Never stand between cables or leads.
* Keep as far away from the power source (welder) as possible while welding.
* Never stand between the ground clamp and the torch.
* Keep the ground clamp grounded as close to the weld or cut as possible.
Welding and cutting processes pose certain inhalation risks. Be sure to follow any
guidelines from your chosen consumable and electrode suppliers regarding possible need for
respiratory equipment while welding or cutting. Always weld with adequate ventilation. Never weld
in closed rooms or confined spaces. Fumes and gases re-leased while welding or cutting may be
poisonous. Take precautions at all times.
Anyburning of the eyes, nose or throat are signs that you need to increase ventilation.
* Stop immediately and relocate work if necessaryuntil adequate ventilation is ob-tained.
* Stop work completely and seek medical help if irritation and discomfort persists.
WARNING! Do not weld on galvanized steel, stainless steel, beryllium, titanium, cop-per,
cadmium, lead or zinc without proper respiratory equipment and or ventilation.
WARNING! This product when used for welding or cutting produces fumes and gas-es
which contains chemicals known to the State of California to cause birth defects and in some
§
cases cancer. (California Safety and Health Code 25249.5 et seq.)
WARNING! Do not weld or cut around Chlorinated solvents or degreasing areas. Release
of Phosgene gas can be deadly. Consider all chemicals to have potential deadly results if welded
on or near metal containing residual amounts of chemicals.
Keep all cylinders upright and chained to a wall or appropriate holding pen. Certain
regulations regarding high pressure cylinders can be obtained from OSHA or local regulatory
agency. Consult also with your welding supply company in your area for further recommendations.
The regulatory changes are frequent so keep informed.
All cylinders have a potential explosion hazard. When not in use, keep capped and closed.
Store chained so that overturn is not likely. Transporting cylinders incorrectly can lead to an
explosion. Do not attempt to adapt regulators to fit cylinders. Do not use faulty regulators. Do
not allow cylinders to come into contact with work piece or work. Do not weld or strike arcs on
cylinders. Keep cylinders away from direct heat, flame and sparks.
SAFETY PRECAUTIONS

WARNING! Electrical shock can kill. Make sure all electrical equipment is properly
grounded. Do not use frayed, cut or otherwise damaged cables and leads. Do not stand, lean
or rest on ground clamp. Do not stand in water or damp areas while weld-ing or cutting. Keep
work surface dry. Do not use welder or plasma cutter in the rain or in extremely humid
conditions. Use dry rubber soled shoes and dry gloves when welding or cutting to insulate
against electrical shock. Turn machine on or off only with gloved hand. Keep all parts of the
body insulated from work, and work tables. Keep away from direct contact with skin against
work. If tight or close quarters ne-cessitates standing or resting on work piece, insulate with
dry boards and rubber mats designed to insulate the body from direct contact.
All work cables, leads, and hoses pose trip hazards. Be aware of their location and
make sure all personnel in area are advised of their location. Taping or securing ca-bles with
appropriate restraints can help reduce trips and falls.
WARNING! Fire and explosions are real risks while welding or cutting. Always keep
fire extinguishers close by and additionally a water hose or bucket of sand. Periodi-cally check
work area for smoldering embers or smoke. It is a good idea to have someone help watch for
possible fires while you are welding. Sparks and hot metal may travel a long distance. They
may go into cracks in walls and floors and start a fire that would not be immediately visible.
Here are some things you can do to reduce the possibility of fire or explosion:
* Keep all combustible materials including rags and spare clothing away from area.
* Keep all flammable fuels and liquids stored separately from work area.
* Visually inspect work area when job is completed for the slightest traces of smoke or embers.
* If welding or cutting outside, make sure you are in a cleared off area, free from dry tender and
debris that might start a forest or grass fire.
* Do not weld on tanks, drums or barrels that are closed, pressurized or anything that held
flammable liquid or material.
Metal is hot after welding or cutting! Always use gloves and or tongs when handling hot
pieces of metal. Remember to place hot metal on fire-proof surfaces after han-dling. Serious
burns and injury can result if material is improperlyhandled.
WARNING! Faulty or poorly maintained equipment can cause injury or death. Prop-
er maintenance is your responsibility. Make sure all equipment is properly maintained and
serviced by qualified personnel. Do not abuse or misuse equipment.
Keep all covers in place. A faulty machine may shoot sparks or may have exploding parts.
Touching uncovered parts inside machine can cause discharge of high amounts of electricity.
Do not allow employees to operate poorly serviced equipment. Always check
condition of equipment thoroughly before start up. Disconnect unit from power source before
any service attempt is made and for long term storage or electrical storms.
Further information can be obtained from The American Welding Society (AWS) that
relates directly to safe welding and plasma cutting. Additionally, your local welding supply
company may have additional pamphlets available concerning their products. Do not operate
machinery until your are comfortable with proper operation and are able to assume inherent
risks of cutting or welding.
SAFETY PRECAUTIONS

I.
MAIN USAGE AND THE RANGE OF USAGE
，
Digi-Tig200ACDC PULS Welder is triple functional machine used as DC MMA AC TIG, DC/
PULSE TIG Welder. All ferrous metals copper, Aluminium ,titanium and stainless steel
material can be omnibearing welding in all position.The welding current is stable and stepless
adjustable.The welding seam is nice. few spatter and low noise occurs during welding.The welder
is small volume,light in weight and easy to move.It is particularly suitable for enterprise of
pressure vessel,building,shipping and petrochemical works. It is the priority product to replace
the NSA series welding machine.
Ⅱ. MAIN TECHNICAL SPECIFICATIONS
MODEL Digi-Tig200ACDC PULS
INPUT Voltage 1 xAC110V 50/60Hz 1 xAC220V 50/60Hz
DC
MMA
No-load Voltage
70V
Base current Adjusting Range 5~100A 5~160A
Rated Output Current 100A 160A
Rated Duty Cycle 60%
AC
TIG
No-load Voltage
70V
Current Adjusting Range 5~125A 5~200A
SP %
(
AC balance
)
10~70
AC Square Wave Frequency 30~250Hz
Rated Duty Cycle 60%
DC
TIG Current Adjusting Range
5~125A 5~200A
Rated Duty Cycle 60%
Standard
PULSE
TIG
Peak Current
5~125A 5~200A
Base/peak Current ratio 5~95%
Rated Duty Cycle 60%
Pulse width 5%~95%
pulse Freq.
0.1~500Hz@DC
0.1~250Hz@AC ADV.SQUARE
0.1~10Hz@AC SOFT.SQUARE&TRIANGULAR&SINE WAVE
Advanced
PULSE
TIG
(MIX)
AC peak Current
5~125A 5~200A
DC(base)/AC peak Current Ratio 5~95%
Rated Duty Cycle 60%
Pulse width 5%~95%
pulse (AC to DC-) Freq. 0.1~10Hz
Current UP/Down-slope Time 0~10S
Initial current/weldingcurrent 5~150%
crater-fill current/welding current 5~95%
Pre gas Flow Time 0~25s
Post gas Flow Time 0~25s
Arc starting Mode HF/LIFT TIG
Efficiency
≥80%
Mass 25kg
Protection Class of enclosure IP21S
Outline Dimensions mm
3430x200x290

Ⅲ. OPERATING CONDITION AND WORK SURROUNDING
1. Operating condition:
。
Voltage of power source: 1x110V or 1x220V
Frequency: 50/60Hz
Reliable grounding protection
2.Work surrounding
① ℃
. relative humidity: not more than 90 %( average monthly temperature not more than 20 )
②℃℃
. ambient temperature:-10 ~ 40
③. The welding site should have no harmful gas, Chemicals, molds and inflammable matter,
explosive and corrosive medium, no big vibration and bump to the welder.
④. Avoiding rain water. Operating in rain is not allowed.
Ⅳ. DESCRIPTION OF THE ERECTION
1. Before welding, the operator should read the operation instructions.
2.Check the welder appearance for deformation and damage.
3.For the safety of the equipment and the persons, the customer must correctly make grounding
or protection according to the power supply system:using 4mm2lead to connect the protection
grounding of the welder
4. Welding operation should be carried out in dry and good ventilating area.The surrounding
objects should be not less than 0. 5m away from the welder.
5.Checking the welder output connector for tightness.
6.The welder can not be moved and the cover can not be opened during the power is on and
welding operation is carried out.
7.The welder should be cared, used and managed by specialized person.
8.Current of the distribution board:not less than 40A
Ⅴ.SKETCH SKETCH THE PANEL FUNCTION
1. FRONT PANEL 2. BACK PANEL
20
24
21 22
7 8
4
910
1113
3
5
615
15
16
17 18 16
112
19
26
23
26

1.Memory chanel LED 2. Data Display meter 3. Parameter Select function 4.indicating light of power
5. S -- unit of up & downslope time & pre& post flow time
% -- unit of AC balance &peak time on
Hz-- unit of pulse freq.&AC freq.
（（6. indicating light of Parameter Select function Pre-flow /Start current/Up slope/Welding Amps Pulse peak
）amps /peak time on/ pulse freq./base Amps/down slope/end current/post flow/AC freq./ AC balance/)
7.AC
slector
AC WAVE FORM: advanced square/soft square/triangular square / sine square
8.warning indicating light
9. MMA slector
DC-/DC+
10.TIG PULSE slector
11.TIG slector
DC TIG/AC TIG/MIX TIG
12. 2 T/ 4 T slector
（） （）13. Data Display Adjustment Knob 15. output"+" Welding holder 16. output"-" Ground clamp
17.argon out 18.argon arc control (or remote control)
19.Amp Adjustment slector (remote control)
panel/ pedal /finger torch
20. power switch
21.argon inlet 22.power supply 23.safety earthing column 24.fan
25.HF/Lift TIG slector 26.110V or 220v receptacle
1
2
3
43
7
10
11
12
85
25
13
9
6
619
Digi-Tig200ACDC PULS

Ⅵ.METHOD OF THE OPERATION
1.ARGON ARC WELDING(TIG)
a. FRONT OF WELDER b. BACK OF WELDER
1.1 CLEARING BEFORE WELDING
Tungsten argon an welding is very sensitive to surface contamination of filled metal.
Therefore before welding is carried out, grease, paint and coating on the surface,lubricant for
machining and oxidized film should be removed.
1.2 DC ARGON ARC WELDING
①
.selector "11" onto the position " DC TIG "or "AC TIG" or"MIX TIG", selector "10" onto the
position " pulse off " ,Connecting the gas inlet pipe to inlet "21" of the welding.
②
.Connecting gas inlet pipe of the welding torch to argon output of welder "17".
③
.Putting the aerial plug of the welding torch in the argon arc control socket "18".
④
.Testing gas: get the power of the welder ready and switch on the power "2", open the argon
bottle switch and switch on the flow meter, press the torch switch, select suitable argon flow.
⑤
. .Regulating the knob " 3 &13". Selecting suitable welding current according to thickness
of the workpiece to be welded.. Selecting suitable current down slope time and post flow
time according to the current.
Notice 1: The current indicating meter on the front panel is used to display the preset output
current level before welding, and actual output level while welding: A lit display indicates input
power is turned on.
Notice 2:
When using
'Adjustable foot control '.regulating the current with sole. selector "12" onto
the position " PEDAL "welding current will increase gradually when you step at full tilt the 'Adjus
table foot control
' with sole.
Notice 3:
When using
' Adjustable finger control torch '.regulating the current with finger.
selector "19" onto the position " Panel " or " PEDAL "or"
finger torch",, then begin to weld.
⑥
. Tungsten electrode end is 2-3mm away from the welding workpiece. Press the torch
switch,arc striking will occur.
oo
workpiece
torch
21
argon
bottle
switch
flow meter
gas inlet pipe
20
24
23 22
7 8
4
910
1113
3
5
615
15
16
17 18 16
112
19
26

Notice: During welding, when the" 12. 2T/4Tswitch"on "2T", switch of the torch must be
pressed and can not be released.otherwise the arc will be broken.
⑦
.Releasing the switch of the torch, welding current will reduce gradually (time is adjustive)
and arc extinguishes.The welding torch can not be removed as soon as the arc extinguishing. Let
the protection gas cooling down for the welding seam not to be oxidized.
⑧
.When the welding operation is finished, turn off argon bottle switch and cut off input power
of the welder.
1.3 PULSE ARGON ARC WELDING
①
. Selection of peak current and base current:
②
. selector "11" onto the position " DC TIG " or "AC TIG "and selector "10" onto the position
" on",
③
.select peak time on ratio: It can be selected between 5%-95%.
④
.select up-slope&down slope time: It can be selected between 0-10S.
⑤
.Gas connecting and testing,are generating and are blowing off etc. are all the same as DC
are welding.
1.4 PULSE ARGON TUNGSTEN WElDING PROCESS (only for reference)
①.Features and application scope of the process .
The pulse type argon tungsten are welding is different from the continuous(DC) argon are
welding.The welding current is pulsed.The wave form of the current is shown in the following
sketch.Ip and Ib and their continuous time tp and tb can be regulated according to
requirements of the process. The amplitude value of electric current changes periodically with
certain frequency in case of the pulse current, molten base will be formed in the workpiece and
the molten bath will be solidified in care of base current.The welding seam is formed by
reciprocal overlaps. Welding heat input can be controlled by regulating pulse frequency, pulse
current amplitude, size of base current,continuous time of pulse current and base current and
therefore the welding seam,size and quality of the zone influenced from heat can be controlled.
②
.Advantages and application scope of pulse argon gas tungsten arc welding
a. Precisely control the size of the bath inputting heat to workpiece to increase penetration
tp--width time of pulse current
width time of base current
tb--
tp+tb=T
tb
--- = D pulse width
CUR.
(A)
T (s)
t1
gas pre flow
arcing
up-slope
welding process
down-slope
arcing off
post Flow
tp tb
T
Ip
Ib
Ip--pulse current
Ib--base current
tp
Start Amps End Amps

resistance of molten seam and preservation of bath. It is easy to obtain even fusing deepness.
This process is specially applicable to omni-bearing welding of sheet and formation to be done
with both sides through one side welding.
b. Heating and cooling of each welding point is very fast,.Therefore,the process is applicable for
the workpiece with great difference of heat conductivity and thickness.
c. Pulse arc can obtain greater fusing deepness with lower heat input.Therefore under the
same condition, the zone influenced from welding heat and deformation from welding can be
reduced. This is very important for sheet and ultra-thin sheet welding.
d. Fast cooling of the bath metal and shot duration time of high temperature during welding
can reduce cracks caused to the thermo-sensitive materials during welding.
③
.Selection of welding parameters
Except for pulse current and the width time (width ratio) as well as pulse frequency ,welding
parameters of pulse argon gas tungsten arc welding are as same as general tungsten DC argon
are welding. Pulse current increasing means electric arc can obtain greater penetration ability.
But too much current can cause local melting of tungsten electrode.Generally,welding current
required for DC tungsten argon are welding or greater current is used. Arc holding current and
base current influences cooling and crystallizing of the metal in the bath. The range is
determined by performance of the welding materials. When sheet is welding,smaller arc holding
current (base current) is usually used in order to reduce welding through and deformation.When
pulse width ratio (holding time of pulse current and base current) is selected, both the heat input
％
and features of pulse welding should be considered. Usually, it can be selected between 10 - 90
％. Selection of pulse frequency (periodical change time of pulse current) mainly depends on
thickness of sheet and welding speed and operation custom of the operator should be also
considered.
1.4 AC ARGON ARC WELDING
1. selector "11" onto the position " AC TIG ",selector "25" onto the position "HF TIG",
selector "10" onto the position "off " or "Advanced AC",Connecting the gas inlet pipe to inlet "21"
of the welding.
2. The method of the connection same as 1.1
3. select right "sp(AC Balance)"
SP= *100%
tp:the time of I2at positive tn: the time of In at Negative
4. select right AC square wave frequency &AC balance.
5. The Method of the welding same as 1.1
tp
tn

2.Hand welding with electrode
①
.selector "9" onto the position " DC+ " or "DC-"
②
. select right welding current
select empiric formula:I=40d, d is dia. of the electrode.
③
.Notice positive and negative connection during welding.
④
.Connecting input power for the welder, then switch on the power and current indicating
light "4" is on .
⑤
.Pay attention to rated welding current and rated duty cycle of the welder. Overload is not
allowed.
⑥
.After the welding operation is finished, let the welder be ventilated for a few minutes and
then cut off the power switch.
Ⅶ.SYSTEMATIC BLOCK DIAGRAM
OUTPUT
AC/DC
Rectifier &
Filter
INPUT
Inverse
Circuit
25KHz
OUTPUT
Rectifier
Filter
110V or 220V
Control Circuit H.F.
+
TORCH
-
ELECTRODE
HOLDER
WORKPIECE
WELDER

Ⅷ.This product is sold subject to the understanding that if any defect in manufacture or
material shall appear within 12 months from date of consumer sale, the manufacturer will
arrange for such defect to be rectified without charge on the sales invoice and warranty
card (except for any personal trouble).
General Troubles and Problem Solving:
Output current
decreased 1. Input Voltage is low 2. Input line is too thin 2. Power line is thickened
Current can not be
regulated
1.Connecting line of the potentiometer is of
f
2.Potentiometer for current regulation fail
1.Reconnecting the line
2.Replace potentiometer
High frequency are
can not be generated
1.The switch fails
2.Interval of high frequency discharging is t
oo big
3.Distance of the torch and workpieceis too far
high frequency arc generator fails
1.Replace torch switch
2.Regulating discharging interval
to 0.8-1.0mm
3.Put torch tungsten electrode close to wor
kpiece
4.Replace high frequency arc generator
Arc of argon welding
is broken or
tungsten electrode
is burnt
1.Argon gas flow is not regulated well
2.Tungsten electrode fails
3.Value of current does not match with dia.
of tungsten electrode
4.After flow time too short
1.Regulated well
2.Replace or sharpen
3.Select the electrode dia. and
current correctly
4.Enlarge the time
Welding torch
overheat
1.Not use the water cooling when the
current is more than 160A
2.The argon flow is the low current
1.Use water cooling
2.Enlarge the argon flow
Welding stops, and
warning light is on
Self-protection has engaged
1.Display "E01"
2.Display "E02"
3.Display "E04"
1.over-temperature,
2.over-current,
3. .torch switch always close
Trouble Causes Problem Solving
Power lamp not light 1.No electricity input
2.Switch of welder fails. 1.Check incoming line 2.Replace the switch
Fan not rotating 1.Fan poer line is off.
2.Enclosure blocks the fan due to deformation
3.The fan fails.
1.Reconnect the line
2.Reform the enclosure
3.Replace the fan
Warning lamp lights 1.Over heat(yellow lamp lights)
2.Oer current(Green lamp lights) 1.Welding after cooling. 2.Input voltage too low or the machine fails
No output of welder 1.Over crrent protection
2. Welder fails
1. Over load using
2. Maintenance in manufacturer or service
center

Ⅸ.ACCESSORIES:SEE PACKING LIST,PLEASE
PACKING LIST
★★★★★★★★★★★★★★★★★★★★★★★★
No.
━━━━━━━━━━━━━━━━━━━━━━━
─────────────────────────────
Certificate of quality
Name of product: AC/DC/PULSE TIG WELDING
Type of product:Digi-Tig200ACDC PULS
Packing No:
Test results of this welder fulfils_____________
_________technical requirements and its release
from the works is granted.
Inspector_________ Date___________
model quantity remark note
Digi-Tig200ACDC PULS
Welding machine 1
Welding Holder 1
Ground clamp 1
TIG welding torch 1
Adjustable foot control 1
flow meter 1
Adjustable finger control torch 1 optional accessory
gas inlet pipe 1
Operation instructions 1
Certificate of quality 1

WARNING
AVISO DE
PRECAUCION
ATTENTION
WARNUNG
ATENÇÃO
Spanish
French
German
Portuguese
Japanese
Chinese
Korean
Arabic
READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE
USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.
SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOS
CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU SUPERVISOR.
LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A
ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR.
LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HER-
STELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.
●Do not touch electrically live parts or
electrode with skin or wet clothing.
●Insulate yourself from work and
ground.
●No toque las partes o los electrodos
bajo carga con la piel o ropa moja-
da.
●Aislese del trabajo y de la tierra.
●Ne laissez ni la peau ni des vête-
ments mouillés entrer en contact
avec des pièces sous tension.
●Isolez-vous du travail et de la terre.
●Berühren Sie keine stromführenden
Teile oder Elektroden mit Ihrem
Körper oder feuchter Kleidung!
●Isolieren Sie sich von den
Elektroden und dem Erdboden!
●Não toque partes elétricas e elec-
trodos com a pele ou roupa molha-
da.
●Isole-se da peça e terra.
●Keep flammable materials away.
●Mantenga el material combustible
fuera del área de trabajo.
●Gardez à l’écart de tout matériel
inflammable.
●Entfernen Sie brennbarres Material!
●Mantenha inflamáveis bem guarda-
dos.
●Wear eye, ear and body protection.
●Protéjase los ojos, los oídos y el
cuerpo.
●Protégez vos yeux, vos oreilles et
votre corps.
●Tragen Sie Augen-, Ohren- und Kör-
perschutz!
●Use proteção para a vista, ouvido e
corpo.

WARNING
AVISO DE
PRECAUCION
ATTENTION
WARNUNG
ATENÇÃO
Spanish
French
German
Portuguese
Japanese
Chinese
Korean
Arabic
LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA AS
PRÁTICAS DE SEGURANÇA DO EMPREGADOR.
●Keep your head out of fumes.
●Use ventilation or exhaust to
remove fumes from breathing zone.
●Los humos fuera de la zona de res-
piración.
●Mantenga la cabeza fuera de los
humos. Utilice ventilación o
aspiración para gases.
●Gardez la tête à l’écart des fumées.
●Utilisez un ventilateur ou un aspira-
teur pour ôter les fumées des zones
de travail.
●Vermeiden Sie das Einatmen von
Schweibrauch!
●Sorgen Sie für gute Be- und
Entlüftung des Arbeitsplatzes!
●Mantenha seu rosto da fumaça.
●Use ventilação e exhaustão para
remover fumo da zona respiratória.
●Turn power off before servicing.
●Desconectar el cable de ali-
mentación de poder de la máquina
antes de iniciar cualquier servicio.
●Débranchez le courant avant l’entre-
tien.
●Strom vor Wartungsarbeiten
abschalten! (Netzstrom völlig öff-
nen; Maschine anhalten!)
●Não opere com as tampas removidas.
●Desligue a corrente antes de fazer
serviço.
●Não toque as partes elétricas nuas.
●Do not operate with panel open or
guards off.
●No operar con panel abierto o
guardas quitadas.
●N’opérez pas avec les panneaux
ouverts ou avec les dispositifs de
protection enlevés.
●Anlage nie ohne Schutzgehäuse
oder Innenschutzverkleidung in
Betrieb setzen!
●Mantenha-se afastado das partes
moventes.
●Não opere com os paineis abertos
ou guardas removidas.