Vector Welding E161, E401 Operating Instructions Manual

OPERATING INSTRUCTIONS

Welding Machine

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3

Years

5

Years

VECTOR WELDING TECHNOLOGY

GmbH

VECTOR DIGITAL – We optimize the quality and prices

Looking to the future, sustainability, environment friendly and high on the customer-oriented competence - the key words to which we are responsible.

For this reason, we develop our own powerful brand VECTOR .

In VECTOR welding equipment combines advanced inverter technology,the highest quality standards of a premium brand and low prices to a unique value for money. Inverter technology is an essential component of process improvement and minimizes energy consumption. In all our equipment, we therefore trust on the MOSFET

Toshiba and Infineon IGBT technology from setting new standards in welding technology.

SIEMENS

technology from

. Their innovative solutions are

VECTOR welding equipment can be used on nearly all weld able metals. It is particularly suitable when quality welds are extremely important. Private gardening - motorcycles, cars, trucks, classic cars, model making, stair and balcony railings or in the professional and industrial sectors such as Oil pipeline, chemical, automotive, shipbuilding, boiler, electric power construction, nuclear power, aerospace, military, industrial installation, bridge construction and other industries, the highest quality requirements are met successfully with VECTOR welding equipment.

VECTOR is one of the leading suppliers of welding equipment - discover our possibilities - profit from our vision to offer modern, high-performance welding

equipment at unbeatable prices.

On the basis of 4 strategic objectives, our company work day by day to optimize this vision:

◆

Number 1 in Technology

◆

Number 1 in the prices

◆

Number 1 in Service

◆ Number 1 in the environmental compatibility

More than 30,000 enthusiastic customers trust our equipment in the welding and plasma technology. They confirm the success of these trendsetting strategy. In addition to the stringent quality test and the test in the production, we subject the equipment a thorough inspection before delivery. We guarantee delivery of spare parts and repair of all equipment.

The customer is served during and after the warranty period from us. In case of problems, call us , we are always available. You are also welcome to visit us. Highly qualified employees are dedicated to carrying out their various tasks with expertise and passion. Our motivated team will always find a positive solution for you. Everyone is welcome to test our equipment in detail under the guidance of our experts.

Private gardening, industry or professional, in every area you win if you rely on technology of welding equipment from VECTOR.

For questions or suggestions, please contact us .

www.vector-welding.com

WARNINGS

Read and understand this entire Manual and your employer’s safety practices before installing, operating ,or servicing the equipment.

While The operating instructions provide an introduction to the safe use of the products.

• Read the operating instructions for all system components!

• Observe accident prevention regulations!

• Observe all local regulations!

• Confirm with a signature where appropriate.

Published by:

VECTOR WELDING TECHNOLOGY GMBH

Hansestrasse 101.

51149, Koln, Germany www.vector-welding.com

Record the following information for Warranty purposes:

Where Purchased:

Purchase Date:

Serial NO.:

Safety instruction

1.1 Arc welding demage-----------------------------------------------------------------01-04

1.2 Effects of low frequency electric and magnetic fields------------------------- 04-04

1.3 Symbol chart ------------------------------------------------------------------------ 05-05

Chapter 1: AC/DC Series Equipment

V-Series

---------------------------------------------------------------------------- 06-06

1.Summary

1.1 Brief introduction------------------------------------------------------------------- 07-08

1.2 Working principle-------------------------------------------------------------------- 09-09

1.3 Volt-ampere characteristic------------------------------------------------------ 09-09

1.4 Specifications V1841/V241----------------------------------------------------- 10-10

1.5 Specifications V341--------------------------------------------------------------- 11-11

1.6 Duty cycle-------------------------------------------------------------------------- 12-12

1.7 Packaged items-------------------------------------------------------------------- 13-13

2.Operation

2.1 Layout for the panel V1841------------------------------------------------------ 13-16

2.2 Control panel---------------------------------------------------------------------- 16-19

2.3 Layout for the panel V241l/V341------------------------------------------------ 19-22

2.4 Control panel------------------------------------------------------------------------ 23-26

2.5 Setup for STICK(MMA) welding----------------------------------------------------- 26-27

2.6 Setup for LIF TIG welding-------------------------------------------------------- 27-28

2.7 Operation environment----------------------------------------------------------- 29-29

2.8 Operation notices---------------------------------------------------------------- 29-29

3.Troubleshooting

3.1 Troubleshooting-------------------------------------------------------------------- 30-32

Chapter 2: Stick Series Equipment

E-Series

--------------------------------------------------------------------------- 33-33

1.Summary

1.1 Brief introduction------------------------------------------------------------------ 34-34

1.2 Working principle------------------------------------------------------------------ 34-34

1.3 Specifications E161/E201 --------------------------------------------------------- 35-35

1.4 Packaged items-------------------------------------------------------------------- 35-35

1.5 Duty cycle -------------------------------------------------------------------------- 36-36

1.6 Specifications E221--------------------------------------------------------------- 36-37

1.7 Packaged items------------------------------------------------------------------- 37-37

1.9 Specifications E301/E401------------------------------------------------------- 38-38

1.10 Packaged items------------------------------------------------------------------- 38-38

1.11 Duty cycle---------------------------------------------------------------------------- 39-39

2.Operation

2.1 Layout for the panel E161 /E201---------------------------------------------- 39-40

2.2 Layout for the panel E221------------------------------------------------------- 41-42

2.3 Layout for the panel E301/E401------------- ----------------------------------- 43-44

2.4 Set-up for LIFT TIG (GTAW) welding (only for E221)------------------------- 44-46

2.5 Setup for STICK (MMA) Welding------------------------------------------------- 46-47


3.1 Troubleshooting--------------------------------------------------------------------- 47-49

Chapter 3: Cutting Series Equipment

C-Series

--------------------------------------------------------------------------- 50-50

1.Summary

1.1 Brief introduction----------------------------------------------------------------- 51-51

1.2 Specifications C41---------------------------------------------------------------- 51-52

1.3 Packaged items-------------------------------------------------------------------- 52-52

1.4 Duty cycle--------------------------------------------------------------------------- 52-52

1.5 Specifications C71----------------------------------------------------------------- 53-53

1.6 Packaged items---------------------------------------------------------------------- 53-53

1.7 Duty cycle------------------------------------------------------------------ ---------- 53-54

1.8 Specifications C101---------------------------------------------------------------- 54-55

1.9 Packaged items----------------------------------------------------------------------- 55-55

1.10 Duty cycle------------------------------------------------------------------------- 55-55

2.Operation

2.1 Layout for the panel C41----------------------------------------------------------- 56-57

2.2 Layout for the panel C71------------------------------------------------- --------- 57-58

2.3 Layout for the panel C101---------------------------------------------------------- 59-60

2.4 Steel cutting capability (thickness to scale)------------------------------------ 60-60

2.5 Installation instructions-------------------------------------------------------------- 61-63


3.1 Troubleshooting----------------------------------------------------------------------- 64-65

Chapter 4: DC Pulse Series Equipment

T-Series

------------------------------------------------------------------------------- 66-66

1.Summary

1.1 Brief introduction----------------------------------------------------------------------- 67-68

1.2 Working principle-----------------------------------------------------------------------68-68

1.3 Volt-ampere characteristic---------------------------------------------------------- 69-69

1.4 Specifications T231/T331------------------------------------------------------------ 69-70

1.5 Duty cycle ----------------------------------------------------------------------------- 70-70

1.6 Packaged items------------------------------------------------------------------------ 71-71

2.Operation

2.1 Layout for the panel T231/T331------------------------------------------------------ 71-75

2.2 Control panel---------------------------------------------------------------------------- 75-76

2.3 Setup for STICK(MMA) welding ------------------------------------------------------ 77-77

2.4 Setup for LIF TIG welding------------------------------------------------------------ 78-78

2.5 Operation environment---------------------------------------------------------------- 79-79

2.6 Operation notices--------------------------------------------------------------------- 79-79


3.1 Troubleshooting ---------------------------------------------------------------------- 80-82

Chapter 5: Multifunction Series Equipment

O-Series

----------------------------------------------------------------------------- 83-83

1.Summary

1.1 Brief introduction----------------------------------------------------------------------- 84-84

1.2 Working principle---------------------------------------------------------------------- 85-85

1.3 Volt-ampere characteristic---------------------------------------------------------- 85-85

1.4 Specifications O241/O251---------------------------------------------------------- 86-86

1.5 Duty cycle-------------------------------------------------------------------------------87-87

1.6 Packaged items----------------------------------------------------------------------- 88-88

2.Operation

2.1 Layout for the panel O241----------------------------------------------------------- 88-92

2.2 Control panel---------------------------------------------------------------------------- 92-93

2.3 Layout for the panel O251------------------------------------------------------------ 94-98

2.4 Control panel ------------------------------------------------------------------------ 98-101

2.5 Setup for STICK (MMA) welding O241----------------------------------------- 101-102

2.6 Set-up for LIFT TIG (GTAW) welding O241----------------------------------- 102-103

2.7 Setup for cutting (CUT) O241--------------------------------------------------- 103-105

2.8 Setup for STICK (MMA) welding O251----------------------------------------- 105-106

2.9 Set-up for LIFT TIG (GTAW) welding O251----------------------------------- 106-107

2.10 Setup for cutting (CUT) O251-------------------------------------------------- 107-109

2.11 Operation environment--------------------------------------------------------- 109-109

2.12 Operation notices------------------------------------------------------------- 110-110


3.1 Troubleshooting------------------------------------------------------------------- 110-112

Chapter 6: MIG Series Equipment

R-Series

--------------------------------------------------------------------------- 113-113

1.Summary

1.1 Brief introduction------------------------------------------------------------------ 114-114

1.2 Working principle------------------------------------------------------------------ 114-114

1.3 Specifications R221-------------------------------------------------------------- 115-115

1.4 Packaged items----------------------------------------------------------------- 116-116

1.5 Duty cycle------------------------------------------------------------------------- 116-116

1.6 Specifications R231-------------------------------------------------------------- 117-117

1.7 Packaged items ------------------------------------------------------------------- 118-118

1.8 Duty cycle--------------------------------------------------------------------------- 118-118

1.9 Specifications R251/R311------------------------------------------------------ 119-119

1.10 Packaged items------------------------------------------------------------------ 120-120

1.11 Duty cycle-------------------------------------------------------------------------- 120-120

2.Operation

2.1 Layout for the panel R221------------------------------------------------------ 121-122

2.2 Layout for the panel R231------------------------------------------------------ 123-125

2.3 MIG gun polarity lead------------------------------------------------------------- 125-125

2.4 Layout for the panel R311--------------------------------------------------------- 126-127

2.5 Installing a 5 kg spool 200mm diameter (for R221,R231)------------------- 127-128

2.6 Installing a 15 kg spool 300mm diameter (suitable for R251 and R311------128-128

2.7 Inserting wire into the feed mechanism---------------------------------------- 128-129

2.8 Feed roller pressure adjustment--------- ---------------------------------------- 130-130

2.9 Changing the feed roll------------------------------------------------------------- 130-131

2.10 Shielding gas regulator operating instructions----------------------------- 131-134

2.11 Set-up MIG (GMAW) welding with gas shielded MIG wire----------------- 134-135

2.12 Set-up for MIG (FCAW) welding with gasless MIG wire----------------------- 135-136

2.13 Set-up for LIFT TIG (GTAW) welding (only for R231)------------------------- 137-137

2.13 Set-up for STICK metal ARC welding (MMA)---------------------------------- 138-138


3.1 Troubleshooting---------------------------------------------------------------------- 139-141

Chapter 7: Welding Technique And

Maintenance

Basic knowledge

------------------------------------------------------------ 142-142

1.TIG Welding

1.1 TIG basic welding technique-------------------------------------------------------- 143143

1.2 Joint froms in TIG------------------------------------------------------------------- 143-143

1.3 The explanation of welding quality----------------------------------------------- 143-144

1.4 TIG parameters matching---------------------------------------------------------- 144-146

1.5 E-series equipment TIG parameters matching------------------------------- 146-147

2.MMA Welding

2.1 MMA basic welding technique------------------------------------------------------ 148-149

3.MIG Welding

3.1 MIG (GMAW/FCAW) basic welding technique---------------------------------150-152

4.Maintenance

4.1 Maintenance------------------------------------------------------------------------- 153-153

SAFETY INSTRUCTIONS AND WARNINGS

SAFETY INSTRUCTIONS

WARNING

PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.

KEEP CHILDREN AWAY. PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING

YOUR DOCTOR. DO NOT LOSE THESE INSTRUCTIONS. READ OPERATING/INSTRU-

CTION MANUAL BEFORE INSTALLING, OPERATING OR SERVICING THIS EQUIPMENT.

Welding products and welding processes can cause serious injury or death, or damage to other equipment or property, if the operator does not strictly observe all safety rules and take precautionary actions.

Safe practices have developed from past experience in the use of welding and cutting.

These practices must be learned through study and training before using this equipment.

Some of these practices apply to equipment connected to power lines; other practices

apply to engine driven equipment. Anyone not having extensive training in welding and

cutting practices should not attempt to weld.

Safe practices are outlined in the European Standard EN60974-1 entitled: Safety in

welding and allied processes Part 2: Electrical HAVE ALL INSTALLATION, OPERATION,

MAINTENANCE, ANDREPAIR WORK PERFORMED ONLY BY QUALIFIED PEOPLE.

1.1 Arc Welding Damage

WARNING ELECTRIC SHOCK can kill.

Touching live electrical parts can cause fatal shocks or severe burns. The electrode and work circuit is electrically live whenever the output is on. The input power circuit and machine internal circuits are also live when power is on. In semi-automatic or automatic wire welding, the wire, wire reel, drive roll housing, and all metal parts touching the welding wire are electrically live. Incorrectly installed or improperly grounded equipment is a hazard.

1. Do not touch live electrical parts.

2. Wear dry, hole-free insulating gloves and body protection.

3. Insulate yourself from work and ground using dry insulating mats or covers.

4. Disconnect input power or stop engine before installing or servicing this equipment.

Lock input power disconnect switch open, or remove line fuses so power cannot be

turned on accidentally.

5. Properly install and ground this equipment according to its Owner’s Manual.

01

SAFETY INSTRUCTIONS


WARNING

ARC RAYS can burn eyes and skin,

NOISE can damage hearing.

Arc rays from the welding process produce intense heat and strong ultraviolet rays that

can burn eyes and skin. Noise from some processes can damage hearing.

1. Wear a welding helmet fitted with a proper shade of filter to protect your face and eyes

when welding or watching;

2. Wear approved safety glasses. Side shields recommended;

3. Use protective screens or barriers to protect others from flash and glare;

warn others not to watch the arc;

4. Wear protective clothing made from durable, flame-resistant material(wool and leather)

and foot protection;

5. Use approved ear plugs or ear muffs if noise level is high;

6. Never wear contact lenses while welding.

WARNING

FUMES AND GASES can be hazardous to your health.

Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health.

1. Keep your head out of the fumes. Do not breathe the fumes.

2. If inside, ventilate the area and/or use exhaust at the arc to remove welding fumes

and gases.

3. If ventilation is poor, use an approved air-supplied respirator.

4. Work in a confined space only if it is well ventilated, or while wearing an air-supplied

respirator. Shielding gases used for welding can displace air causing injury or death.

Be sure the breathing air is safe.

5. Do not weld in locations near degreasing, cleaning, or spraying operations. The heat

and rays of the arc can react with vapours to form highly toxic and irritating gases.

6. Do not weld on coated metals, such as galvanized, lead, or cadmium plated steel, unless

the coating is removed from the weld area, the area is well ventilated, and if necessary,

while wearing an air- supplied respirator. The coatings and any metals containing these

elements can give off toxic fumes if welded.

WARNING WELDING can cause fire or explosion.

Sparks and spatter fly off from the welding arc. The fly sparks and hot metal, weld spatter, hot workpiece, and hot equipment can cause fires and burns. Accidental contact of electrode or welding wire to metal objects can cause sparks, overheating, or fire.

02

1. Protect yourself and others from flying sparks and hot metal.

2. Do not weld where flying sparks can strike flammable material.

3. Remove all flammables far away from the welding arc. If this is not possible, tightly

cover them with approved covers.

4. Be alert that welding sparks and hot materials from welding can easily go through small

cracks and openings to adjacent areas.

5. Watch for fire, and keep a fire extinguisher nearby.


SAFETY INSTRUCTIONS

6. Be aware that welding on a ceiling, floor, bulkhead, or partition can cause fire on the

hidden side.

7. Do not weld on closed containers such as tanks or drums.

8. Connect work cable to the work as close to the welding area as practical to prevent

welding current from travelling long, possibly unknown paths and causing electric

shock and fire hazards.

9. Do not use welder to thaw frozen pipes.

10. Remove stick electrode from holder or cut off welding wire at contact tip when not

in use.

WARNING

FLYING SPARKS and HOT METAL

can cause injury.

Chipping and grinding cause flying metal. As welds cool, they can throw off slag.

1. Wear approved face shield or safety goggles. Side shields recommended.

2. Wear proper body protection to protect skin.

WARNING CYLINDERS can explode if damaged.

Shielding gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. Since gas cylinders are normally part of the welding process, be sure to treat them carefully.

1. Protect compressed gas cylinders from excessive heat, mechanical shocks, and arcs.

2. Install and secure cylinders in an upright position by chaining them to a stationary support

or equipment cylinder rack to prevent falling or tipping.

3. Keep cylinders away from any welding or other electrical circuits.

4. Never allow a welding electrode to touch any cylinder.

5. Use only correct shielding gas cylinders, regulators, hoses, and fittings designed for the

specific application; maintain them and associated parts in good condition.

6. Turn face away from valve outlet when opening cylinder valve.

7. Keep protective cap in place over valve except when cylinder is in use or connected

for use.

8. Read and follow instructions on compressed gas cylinders, associated equipment.

WARNING

Engine fuel is highly flammable.

ENGINE FUEL can cause fire or explosion.

1. Stop engine before checking or adding fuel.

2. Do not add fuel while smoking or if unit is near any sparks or open flames.

3. Allow engine to cool before fuelling. If possible,check and add fuel to cold engine before

beginning job.

4. Do not overfill tank — allow room for fuel to expand.

5. Do not spill fuel. If fuelling is spilled, clean up before starting engine.

03

SAFETY INSTRUCTIONS


WARNING MOVING PARTS can cause injury.

Moving parts, such as fans, rotors, and belts can cut fingers and hands and catch loose clothing.

1. Keep all doors, panels, covers, and guards closed and securely in place.

2. Stop engine before installing or connecting unit.

3. Have only qualified people remove guards or covers for maintenance and troubleshooting

as necessary.

4. To prevent accidental starting during servicing, disconnect negative (-) battery cable

from battery.

5. Keep hands, hair, loose clothing, and tools away from moving parts.

6. Reinstall panels or guards and close doors when servicing is finished and before

starting engine.

WARNING

SPARKS can cause battery gases to explode;

BATTERY ACID can burn eyes and skin.

Batteries contain acid and generate explosive gases.

1. Always wear a face shield when working on a battery.

2. Stop engine before disconnecting or connecting battery cables.

3. Do not allow tools to cause sparks when working on a battery.

4. Do not use welder to charge batteries or jump start vehicles.

5. Observe correct polarity (+ and –) on batteries.

WARNING

STEAM AND PRESSURIZED HOT COOLANT

can burn face, eyes, and skin.

The coolant in the radiator can be very hot and under pressure.

1. Do not remove radiator cap when engine is hot. Allow engine to cool.

2. Wear gloves and put a rag over cap area when removing cap.

3. Allow pressure to escape before completely removing cap.

NOTE

1.2 Effects Of Low Frequency Electric and Magnetic Fields

Electric current flowing through any conductor causes localized Electric and Magnetic

Fields (EMF). The discuss on the effect of EMF is ongoing all the world. Up to now, no material evidences show that EMF may have effects on health. However, the research on damage of EMF is still ongoing. Before any conslusion, we should minimize exposure

to EMF as few as possible.

To reduce magnetic fields in the workplace, use the following procedures.

1. Keep cables close together by twisting or taping them.

2. Arrange cables to one side and away from the operator.

3. Do not coil or drape cable around the body.

4. Keep welding Power Source and cables as far away from body as practical.

5. The people with heart-pacemaker should be away from the welding area.

04


SAFETY INSTRUCTIONS

1.3 Symbol Chart

Note that only some of these symbols will appear on your model.

05

06

V-Series

AC/DC SERIES EQUIPMENT

CHAPTER 1



1.1 Brief Introduction

Summary

TIG V1841 V241 V341 AC/DC welding machine adopts the latest pulse width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer. Thus, its characterized with portable, small size, light weight, low consumption and etc.

The parameters of TIG V1841 V241 V341 AC/DC on the front panel all can be adjusted continuously and steplessly, such as start current, crater arc current, welding current, base current, duty ratio, upslope time, downslope time, pre-gas, post-gas, pulse frequency, AC frequency, balance, hot start, arc force etc. When welding, it takes high frequency and high voltage for arc igniting to ensure the success ratio of igniting arc.

TIG V1841 V 241 V341 AC/DC Characteristics:

◆ MCU control system, responds immediately to any changes.

◆ High frequency and high voltage for arc igniting to ensure the success ratio of

igniting arc, the reverse polarity ignition ensures good ignition behavior in TIG-AC

welding.

◆ Avoid AC arc-break with special means, even if arc-break occurs the HF will keep

the arc stable.

◆ Pedal control the welding current.

◆ In DC TIG without HFopertation, If the tungsten electrode touches the workpiece

when welding, the current will drop to short-circuit current to protect tungsten.

◆ Intelligent protection: over-current, over-heat, when the mentioned problems

occoured, the alarm lamp on the front panel will be on and the output current will

be cut off. It can self-protect and prolong the using life.

◆ Double purposes: AC inverter TIG/MMA and DC inverter TIG/MMA, Excellent

performance on AL-alloy, carbon steel, stainless steel, titanium.

According to choosing the front panel functions, the following five welding ways can be realized.

DC MMA

DC TIG

DC Pulse TIG

AC TIG

AC Pulse TIG

07

08

Summary AC/DC SERIES EQUIPMENT

1. For DC MMA, polarity connection can be chosen according to different electrodes;

2. For DC TIG, DCEP is used normally (workpiece connected to positive polarity, while

torch connected to negative polarity). This connection has many characters, such

as stable welding arc, low tungsten pole loss, more welding current, narrow and

deep weld;

3. For AC TIG (rectangle wave), arc is more stable than Sine AC TIG. At the same time,

you can not only obtain the max penetration and the min tungsten pole loss, but also

obtain better clearance effect;

4. DC Pulsed TIG has the following characters:

1) Pulse heating. Metal in Molten pool has short time on high temperature status

and freezes quickly, which can reduce the possibility to produce hot crack of the

materials with thermal sensitivity .

2) The workpiece gets little heat. Arc energy is focused. Be suitable for thin sheet

and super thin sheet welding.

3) Exactly control heat input and the size of the molten pool. The depth of penetration

is even. Be suitable for welding by one side and forming by two sides and all position

welding for pipe.

4) High frequency arc can make metal for microlite fabric, eliminate blowhole and

improve the mechanical performance of the joint.

5) High frequency arc is suitable for high welding speed to improve the productivity.

TIG V1841 V241 V341 AC/DC –series welding machines is suitable for all positions

welding for various plates made of stainless steel, carbon steel, alloyed steel, titanium,

magnesium, cuprum, etc, Which is also applied to pipe installment, mould mend,

petrochemical, architecture, decoration, car repair, bicycle, handicraft and common manufacture.

MMA-------Manual Metal Arc Welding

PWM-------Pulse-Width Modulation

IGBT--------Insulation Gate Bipolar Transistor

TIG----------Tungsten Insert Gas Welding


Summary

1.2 Working Principle

The working principle of TIG V1841 V241 V341 AC/DC welding machines is shown as the following figure. Single-phase 230V work frequency AC is rectified into DC (about

312V), then is converted to medium frequency AC (about 20-40KHz) by inverter device

(IGBT module), after reducing voltage by medium transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery diodes), then is outputted DC or AC by selecting IGBT module. The circuit adopts current feedback control technology to insure current output stably. Meanwhile, the welding current parameter can be adjusted continuously and steplessly to meet with the requirements of welding craft.

1.3 Volt- Ampere Characteristic

TIG V1841/ V241/ V341 AC/ DC welding machine has an excellent volt-ampere characteristic, whose graph is shown as the following figure. The relation between the conventional rated loading voltage

U and the conventional welding current I is as follows:

When I

2

≤ 600A, U =10+0.04I (V);

09

Summary


1.4 Specifications V1841/V241

Description

Weight

Power Source Dimensions

Cooling

Welder Type

European Standards

Number of Phases

Nominal Supply Voltage

Nominal Supply Frequency

Welding Current Range

(DC STICK Mode)


(DC TIG Mode)

Effective Input Current

Maximum Input Current

Single Phase Generator

Requirement

VECTOR DIGITAL V1841 AC/DC

10 .

9 kg

H395mmxW180mmxD375mm

Fan Cooled

Inverter Power Source

EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz


21.9 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

10 - 170A

10 - 180A

20A

33.9A

11.7KVA

10 - 200A

10 - 200A

29.5A

41.7A

14.4kVA

STICK (MMA)

Welding Output, 40ºC, 10 min.

170A @ 35%, 26 .

8V

100A @ 100%, 24V

200A @ 50%, 28V

141A @ 100%, 25.6V

TIG (GTAW)


Open circuit voltage

Protection Class

180A @ 35%, 17 .

2V

107A @ 100%, 14 .

3V

66V DC

IP23

200A @ 50%, 18V

141A @ 100%, 15.6V

66V DC

IP23


1.5 Specifications V341

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases




(DC STICK Mode)


(DC TIG Mode)




Requirement


26.4 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

3

400V +/- 15%

50/60Hz

30 - 300A

10 - 300A

12.4A

17.5A

18.2KVA

STICK (MMA)


300A @ 50%, 32.0V

212A @ 100%, 28.5V

TIG (GTAW)



Protection Class

300A @ 50%, 22.0V

212A @ 100%, 18.5V

66V DC

IP23

Summary

NOTE

Note 1: The Effective Input Current should be used for the determination of cable size &

supply requirements.

Note 2: Generator Requirements at the Maximum Output Duty Cycle.

Note 3: Motor start fuses or thermal circuit breakers are recommended for this application.

Check local requirements for your situation in this regard.

Due to variations that can occur in manufactured products, claimed performance, voltages, ratings, all capacities, measurements, dimensions and weights quoted are approximate only. Achievable capacities and ratings in use and operation will depend upon correct installation, use, applications, maintenance and service.

NOTE







10 11

Summary


1.6 Duty Cycle

The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at

a 50% duty cycle, 300 amperes at 32 volts. This means that it has been designed and

built to provide the rated amperage (300A) for 5 minutes, i.e. arc welding time, out of every 10 minute period (50% of 10 minutes is 5 minutes). During the other 5 minutes of the 10 minute period the Welding Power Source must idle and be allowed to cool. The thermal cut out will operate if the duty cycle is exceeded.

1 00

9 0

80

7 0

6 0

5 0

4 0

3 0

2 0

1 0

0

0

V1841 STICK

Safe Operating Region

(TIG&STICK)

1 0 0 1 20

V1841 TIG

1 4 0 1 6 0 1 8 0 2 0 0 220

Welding Current(AMPS)

2 4 0 2 6 0 2 8 0 3 0 0 3 2 0

12

1 0 0

9 0

8 0

7 0

6 0

5 0

4 0

3 0

2 0

1 0

0

0

V241 STICK/TIG


(TIG&STICK)

V341 STICK/TIG

1 0 0 1 20 1 4 0 1 6 0 1 8 0 2 0 0 220


2 4 0 2 6 0 2 8 0 3 0 0 3 2 0


1.7 Packaged Items

V1841/V241

◆ 3M Power cord

◆ 200 Amp electrode holder with 3M cable

◆ 200 Amp earth clamp with 3M cable

◆ 4M TIG Torch WP26

◆ 3M Gas Hose

◆ Operating Manual

Operation

V341

◆ 3M Power cord




◆ 3M Gas Hose


2.1 Layout For The Panel V1841

13

Operation


1. Digital Ammeter / Parameter meter

The digital Ammeter is used to display the actual output current of the power source. It is

also used to display Parameters in Programming Mode.

Depending on the Programming Parameter selected, the status indictor adjacent to the

Ammeter will illuminate to show the units of the programming parameter.

When welding, the Ammeter will display actual welding current.

2. Power ON Indicator

The POWER ON indicator illuminates when the ON/OFF switch is in the ON position and

the correct mains voltage is present.

3. Thermal Overload Indicator Light

This welding power source is protected by a self resetting thermostat. The indicator will

illuminate if the duty cycle of the power source has been exceeded. Should the thermal

overload indicator illuminate the output of the power source will be disabled. Once the

power source cools down this light will go OFF and the over temperature condition will

automatically reset. Note that the mains power switch should remain in the on position

such that the fan continues to operate thus allowing the unit to cool sufficiently. Do not

switch the unit off should a thermal overload condition be present.

4. Arcforce/Hot Start/Hotstart current

Setting ranges

Arcforce:1-100AMP Hot Start:0.1-0.5S Hotstart current:1-100 AMP

Change the selected weld functions mode from welding current to hotstart to start time to

arc force from the digital display.

5. JOB and SAVE

You can press JOB to select the memory records that you have saved before from 1-9.

For the new setting of present current Amps ,just press SAVE.

6. Mode Button

Press the MODE button to toggle AC and DC output in LIFT TIG, HF TIG.

7. Trigger Mode Control Button (HF TIG and LIFT TIG Mode only)

The trigger mode control is used to switch the functionality of the torch trigger between

2T and 4T.

2T Normal Mode In this mode, the torch trigger must remain pressed for thewelding

output to be active.

Press and hold the torch trigger to activate the power source (weld). Release the torch

trigger switch to cease welding.


Operation

Note: that when operating in GTAW (HF and LIFT TIG modes), the power source will remain activated until the selected down slope time has elapsed

8. Process Selection Button

The process selection control is used to select the desired welding mode. Two modes

are available, GTAW (TIG), and MMA (Stick) modes.

9. Pulse Button

Press the PULSE button to toggle Pulse On and OFF.

Press & hold

Trigger

Release

Trigger

14

4T Latch mode this mode of welding is mainly used for long welding runs to reduce operator fatigue. In this mode the operator can press and release the torch trigger and the output will remain active. To deactivate the power source, the trigger switch must again be pressed and released, thus eliminating the need for the operator to hold the torch trigger.

Typically from 1 to 10 PPS. Provides a heating

and cooling effect on the weld puddle and can

reduce distortion by lowering the average

amperage. This heating and cooling effect also

produces a distinct ripple pattern in the weld

bead. The relationship between pulse frequency

and travel speed determines the distance

between the ripples. Slow pulsing can also be coordinated with filler metal addition and

increase overall control of the weld puddle

In excess of 40 PPS, Pulsed TIG becomes more audible than visible-causing increased puddle agitation for a better as-welded microstructure.

Pulsing the weld current at high speeds-between a high Peak and a low Background amperage- can also constrict and focus the arc.This results in maximum arc stability, increased penetration and increased travel speeds(Common Range:

100-500 PPS).

The Arc-Sharpening effects of high speed pulsing are expanded to new dimensions. The ability to pulse at 5,000PPS further enhances arc stability and concentration potential-which is extre mely beneficial to automation where maximum travel tspeeds are required.

10. Programming Parameter Indicators

These indicator lights will illuminate when programming.

15

Operation


11. Positive Control

The Positive button is used to plus selected in Programming sequence.

12. Negative Control

The Negative button is used to minus selected in Programming sequence.

13. Selecting Function Button

This button can select different programming parameter from No. 10

14. Negative Welding Terminal

Negative Welding Terminal. Welding current flows from the Power Source via heavy

duty bayonet type terminals. It is essential, however, that the male plug is inserted

and turned securely to achieve a sound electrical connection.

15. Shielding Gas Outlet

The Shielding Gas Outlet located on the front panel is a fast connection of a suitable

TIG Torch.

16. 5 Pin Control Socket

The 5 pin receptacle is used to connect a trigger switch or remote control to the welding

Power Source circuitry:

To make connections, align keyway, insert plug, and rotate threaded collar fully clockwise.

17. Positive Welding Terminal

Positive Welding Terminal. Welding current flows from the Power Source via heavy



CAUTION

Loose welding terminal connections can cause overheating and result in the male plug being fused in the terminal.

2.2 Control Panel

.

Gas Pre-Flow

Absolute setting range 0.1s to 5s (0.1S increments)

This parameter operates in TIG modes only and is used to provide gas to the weld zone prior to striking the arc, once the torch trigger switch has been pressed. This control is used to dramatically reduce weld porosity at the start of a weld.

16


Operation

2.Initial Current

The main current Setting range 10AMP to 100AMP

This parameter operates in (4T) TIG modes only and is used to set the start current for TIG.

The Start Current remains on until the torch trigger switch is released after it has been depressed.

Note: The maximum initial current available will be limited to the set value of the base

current.

3.Up Slope

Setting ranges :0.1S-10S (0.1S increments)

This parameter operates in (2T and 4T) TIG modes only and is used to set the time for the weld current to ramp up, after the torch trigger switch has been pressed then released, from Initial Current to High or base current.

4.Peak Current

Setting ranges

V1841: 10 180A ( DC TIG and AC HF TIG ), 10 170A ( Stick mode )

This parameter sets the TIG WELD current. This parameter also sets the STICK weld current.

5.Base Current

Setting ranges

V1841:10AMP to 180AMP (DC TIG mode), 10AMP to 180AMP (AC HF TIG mode)

Secondary current (TIG)/pulse pause current.

6.Pulse Width

Setting ranges 10%-90%

This parameter sets the percentage on time of the PULSE FREQUENCY for High weld current when the PULSE is ON.

7.Pulse Frequency

Setting ranges 1HZ -200HZ

This parameter sets the PULSE FREQUENCY when the PULSE is ON.

8.Down Slope

Setting ranges 0.1-10s

This parameter operates in TIG modes only and is used to set the time for the weld current

to ramp down, after the torch trigger switch has been pressed to end current. This control

is used to eliminate the crater that can form at the completion of a weld.

9.End Current

Setting ranges 10A-180A

This parameter operates in (4T) TIG modes only and is used to set the finish current for TIG.

The end current remains ON until the torch trigger switch is released after it has been depressed.

Note: The maximum crater current available will be limited to the set value of the base

current.

10. Post Flow

Setting ranges 1.0-10S

This parameter operates in TIG modes only and is used to adjust the post gas flow time once the arc has extinguished. This control is used to dramatically reduce oxidation of the tungsten electrode.

17

Operation


11. AC Frequency

Setting ranges 50HZ-200HZ

This parameter operates in AC TIG mode only and is used to set the frequency for the

AC weld current.

AC Frequency control

Controls the width of the arc cone. Increasing the AC frequency provides a more focused arc with increased directional control.

Note: Decreasing the AC Frequency softens the arc and broadens the weld puddle

for a wider weld bead.

Wider bead, good penetration ideal for buildup work

Wider bead and cleaning acting

Narrower bead for fillet welds and automated applications

Narrower bead and cleaning acting

12.Wave Balance

Setting arranges 10%-50%

This parameter operates in AC TIG mode and is used to set the penetration to cleaning action ratio for the AC weld current. Generally WAVE BALANCE is set to

50% for AC STICK welding. The WAVE BALANCE control changes the ratio of penetration to cleaning action of the AC TIG welding arc. Maximum weld penetration

is achieved when the WAVE BALANCE control is set to 10%. Maximum cleaning of heavily oxidised aluminium or magnesium alloys is achieved when the WAVE

BALANCE control is set to 50%

AC Balance Control

Controls arc cleaning action. Adjusting the % EN of the AC wave controls the width of the etching zone surrounding the weld.

Note: Set the AC Balance control for adequate arc cleaning action at the sides and in front of the weld puddle. AC Balance should be fine tuned according to how heavy or thick the oxides are.

18


Narrower Bead, Good Penetration

Ideal For Buildup Work


Wider bead and cleaning action Narrower bead, with no visible cleaning

2.3 Layout For The Panel V241/V341

5 6 8 7

4

15

16

1

2

3

17 18 19 20

1. RESET Button

When software has problem please trigger RESET button.

2. Pulse Button


9

10

11

12

13

14

Operation

19

Operation

AC/DC SERIES EQUIPMENT AC/DC SERIES EQUIPMENT

Operation














100-500 PPS).




2T and 4T.





20

Press & hold

Trigger

Release

Trigger


The process selection control is used to select the desired welding mode. Two modes

are available, GTAW (TIG), and MMA (Stick) modes.

5. Digital Ammeter

The digital amperage meter is used to display both the pre-set current and actual output

current of the power source.

At times of non-welding, the amperage meter will display a pre-set (preview) amperage

value. This value can be adjusted by varying the multifunction control when the

Programming Parameter Indicator light shows BASE CURRENT.

6. Digital Voltmeter / Parameter Meter

The digital volt meter is used to display the actual output voltage of the power source. It is



volt meter will illuminate to show the units of the programming parameter.

When welding, the volt meter will display actual welding voltage.












21

22

Operation


9. JOB and SAVE


For the new setting of present base current Amps ,just press SAVE.



11. HF Button

Press and hold the HF button to purge the gas line in LIFT TIG and HF TIG modes. To HF

the shielding gas line in LIFT TIG and HF TIG modes press the HF button and release.

12. Mode Button

Press the MODE button to toggle AC and DC output in LIFT TIG, HF TIG and STICK.

13. Forward Programming Button

Pressing this button will advance to the next step in the programming sequence.

14. Back Programming Button

Pressing this button will go back to the previous step in the programming sequence.


The Positive button is used to plus selected in Programming sequence..


The Negative button is used to minus selected in Programming sequence..















TIG Torch.

CAUTION




Operation

11

AC Frequenz sec

3

4

6

%

AMP%

5

Remote

8 sec AMP%

9

12

%

Wave Balance

13 ARC Hotstart

ARC Start Time

14 Arcforce Correction

1.Gas Pre-Flow

V241: Absolute setting range 0.1s to 20s (0.1S increments)

V341: Absolute setting range 0.1s to 20s (0.1S increments)

This parameter operates in TIG modes only and is used to provide gas to the weld zone

prior to striking the arc, once the torch trigger switch has been pressed. This control is

used to dramatically reduce weld porosity at the start of a weld.


V241: The main current Setting range 10AMP to 200AMP

V341: The main current Setting range 10AMP to 300AMP




current.

3.Up Slope



4.Peak Current

Setting ranges

V241:10 200A ( DC TIG and AC HF TIG ), 10 200A ( Stick mode )

V341:10 300A ( DC TIG and AC HF TIG ), 30 300A ( Stick mode )


5.Base Current

Setting ranges




23

Operation


6.Pulse Width






8.Down Slope





9.End current

V241:Setting ranges 10A-200A

V341:Setting ranges 10A-300A




current.

10. Post Flow

V241: Setting ranges 1-20S

V341: Setting ranges 1-20S

This parameter operates in TIG modes only and is used to adjust the post gas flow

time once the arc has extinguished. This control is used to dramatically reduce

oxidation of the tungsten electrode.




AC weld current.






Operation

Wider bead and cleaning acting Narrower bead and cleaning acting

12.Wave Balance


This parameter operates in AC TIG mode and is used to set the penetration to cleaning action ratio for the AC weld current. Generally WAVE BALANCE is set to 50% for AC

STICK welding. The WAVE BALANCE control changes the ratio of penetration to cleaning action of the AC TIG welding arc. Maximum weld penetration is achieved when the WAVE BALANCE control is set to 10%. Maximum cleaning of heavily oxidised aluminium or magnesium alloys is achieved when the WAVE BALANCE control is set to

50%

AC Balance Control







24



25

Operation


13. Hot Start

Hot Start Function reliably ignites the electrode and melts perfectly to ensure the best quality even at the start of the seam. this solution makes lack of fusion and cold welds a thing of the past and significantly reduces weld reinforcement.

Adjust the hot start current here and the time here.

14. Arcforce Correction

During the welding process, arcforce prevents the electrode sticking in the weld pool with increases in current. this makes it easier to weld large-drop melting electrode types at low current strengths with a short arc in particular.

Antistick

U

Anti-stick prevents the electrode from annealing.

If the electrode sticks in spite of the arcrorce device, the machine automatically switches over to the minimum current within about 1 second to prevent the electrode f r o m o v e r h e a t i n g . I n o r d e r t o e a s i l y s e p a r a t e t h e electrode and electrode holder to protect the welder.

I

AC/DC

CAUTION

CAUTION

SERIES EQUIPMENT

Operation

Remove any packaging material prior to use. Do not block the air vents at the front or rear of the Welding

Power Source.

Loose welding terminal connections can cause overheating and result in the male plug being fused in the bayonet terminal.

power supply

26

2.5 Setup For STICK (MMA) Welding

For Alkaline Electrode , connect the electrode holder to the positive welding termimal and connect the work lead to the negative welding terminal , while for the Acid

Electrode , please connect the electrode holder to the negative welding termimal and connect the work lead to the positve welding terminal .

If in doubt consult the electrode manufacturer. Welding current flows from the Power Source via heavy duty bayonet type terminals. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection. Select STICK mode with the process selection control.

WARNING

Before connecting the work clamp to the work and inserting the electrode in the electrode holder make sure the mains power supply is switched off.

2.6 Set-up For LIFT TIG (GTAW) Welding

WARNING

Before any welding is to begin, be sure to wear all

appropriate and recommended safety equipment.

27

28

Operation


NOTE

The following set up is known as Straight Polarity or DC electrode positive. This is commonly used for DC LIFT TIG welding on most materials such as steel and stainless steel.

1. Switch the ON/OFF Switch (located on the rear panel) to OFF.

2. Connect the work lead cable to the positive output terminal, and the LIFT TIG Torch

cable to the negative output terminal.

3. Connect the gas line/hose to the proper shielding gas source.

4. Slowly open the Argon Cylinder Valve to the fully open position.

5. Connect the work lead clamp to your work piece.

6. The tungsten must be ground to a blunt point (similar to a pencil) in order to achieve

optimum welding results. See illustration. It is critical to grind the tungsten electrode

in the direction the grinding wheel is turning. Grind at a 30 degree angle and never

to a sharp point.

7. Install the tungsten with approximately 1.6mm to 3.2mm sticking out from the

gas cup, ensuring you have correct sized collet.

8. Tighten the back cap.

9. Turn the switch to the “ON” position. The power L.E.D. light should illuminate.

10. Set the welding process to LIFT TIG.

11. Set the Weld Current Control Knob to the desired amperage.

Ar./GAS(TIG/WIG)


Operation

2.7 Operation Environment

◆ Height above sea level is below 1000m.

◆ Operation temperature range:-10˚C~+40˚C.

◆ Relative humidity is below 90%(20˚C).

◆ Preferably site the machine some angles above the floor level,the maximum

angle does not exceed 15˚.

◆ The content of dust,acid,corrosive gas in the surrounding air or substance

can not exceed normal standard.

◆ Take care that there is sufficient ventilation during welding.There is at least

30cm free disstance between the machine and wall.

2.8 Operation Notices

◆ Read safty instruction and Chapter 1 carefully before attempting to use this

equipment.

◆ Connect the ground wire the machine directly

◆ In case closing the power switch, no-load voltage may be exported.Do not touch

the output electrode with any part of your body.

◆ Before operation,no concerned people should be left,Do not watch the arc in

unprotected eyes.

◆ Ensure good ventilation of the machine to improve duty ratio.

◆ Turn off the engine when the operation finished to economize energy source.

◆ When power switch shuts off protectively because of failure.Don’t restart it until

until problem is resolved.

Otherwise,the range of problem will be extended.

TIG torch

29

30

Troubleshooting

3.1 Troubleshooting


◆ Before arc welding machines are dispatched from the factory, they have already been

debugged accurately. So forbid anyone who is not authorized by us to do any change to

the equipment!

◆ Maintenance course must be operated carefully. If any wire becomes flexible or is

misplaced, it maybe potential danger to user!

◆ Only professional maintenance personal who is authorized by us could overhaul the

machine!

◆ Guarantee to shut off the arc welding machine’s power before turn on the outline of

the equipment!

◆ If there is any problem and has no the authorized professional maintenance personal,

please contact local agent or the branch company!

If there are some simple troubles of V-series welding machine, you can consult the

following overhauling chart:

Nr.

1

2

Troubles Reasons

Turn on the power Fan is broken source, power indicator is lit, fan is not working.

There is something in the fan

The start capacitor of fan damaged

Turn on the power source, fan is working, power indicator is not lit

The power light damaged or connection is not good

The power board is broken

Display panel is broken

The power cable connected not good

3

4

Turn on the power source, fan is not working ,power indicator is not lit

The power cable is broken

Power on switch is damaged

The light of the power indicator is broken and the problems mentioned in Nr. 2


Turn on the power source, power indicator is lit, fan is working, there is no welding output.

Control board is broken

Solution

Change fan

Clean it

Change capacitor

Change the power light

Change it

Change it

Connect correctly

Repair or change it

Change it

Change the light of the power indicator or refer to the solution

in Nr. 2

Change it

Change it

Replace it

Change it

5

The number of the display is not intact

The display panel is damaged

Digital tube is broken

Change the display panel

Change it

Nr.

Troubles


6

No no-load voltage output

(MMA)

7

Arc can not be

ignited (TIG) , there is spark

on the HF

igniting board

Troubleshooting

Reasons

If the overheat indicator is on

The main circuit is broken

The machine is broken

The welding cable is not connected

with the two output if the welder

The welding cable is damaged

Solution

Wait a few minutes, the machine

can be operated normal

Check and repair

Consult the dealer or the manufacturer

Connect the welding cable to

the welder's output

Repair or change it

The earth cable connected unstably Check the earth cable

The welding cable is too long Use an appropriate welding cable

There is oil or dust on the workpiece Check and remove it

The distance between tungsten electrode and workpiece is too long

Reduce the distance

(about 3mm ,less than 5mm)

There is no Argon flow or the connection is poor

Input voltage not stable

Check and reconnect

Check the power supply

8

9

10

11

Arc can not be ignited (TIG) , there is no spark on the HF igniting board

The distance between discharger is too short or too long

The malfunction of the welding gun switch

No argon gas flow or the air tube connect not good

Adjust the distance (about 0.8mm)

Check the welding torch switch, control cable and aero socket.

Check and reconnect

Check if the function selected MMA Change the function to TIG

Turn on the power source, everything is normal , but no

HF igniting

Check the HF funtion is selected Select the HF funtion

HF board is broken

Earth clamp connect not stable


Gas cylinder is close or gas pressure is low

Something is in the valve

Electromagnetic valve is damaged No gas flow (TIG)

Air tube is brocken

Pressure too high or air regulator is broken


Gas always flows

Electromagnetic valve is damaged

Repair or change it

Check the earth clamp

Check and reconnect

Open or change the gas cylinder

Remove it

Change it

Change it

Check gas

Remove it

Change it

31

32

Troubleshooting


Nr.

12

13

14

15

16

17

18

Troubles

The welding current cannot be adjusted

No AC output while selecting

"AC"

The welding current displayed with the actual value

The penetration not enough

Thermal overload

indicator light is on

Tig electrode melts

when welding

Arc flutters during

Tig welding

Reasons

Checking if the electorde stick to the work piece that the anti-stick function is on

Solution

Separate the electrode and work piece

Control board is broken Repair or change it

Shut off the power when changing the torch

Repair or change it The power board is broken

The AC drive board damaged

The AC IGBT/IGBT module damaged


Change it

Change it

Repair or change it

Adjust potentiometer Imin on the control board


The min value displayed isn't accordant with the actual value

The max value displayed isn't accordant with the actual value

The welding current is adjusted too low

The arc is too long in the welding process

The power cable or the welding cable is too long

AC Width adjustment is not correct

Over-heat protection ,too much welding current

Over-heat protection ,working too

much time

Over-current protection, current in the main circuit is out of control

Input voltage is too low

Fan is broken

Tig torch is connected to the positive terminal

Tungsten electrode is too big for the welding current

Check the earth clamp position on the work piece

Increase the welding current

Adjust the distance from torch to work piece

Use the suitable length from manufacturer

Change to suitable setting

Reduce the welding current

Reduce the welding time

Check and repair main circuit and drive board


Change the fan

Connect the tig torch to negative terminal

Select the correct size of tungsten electrode

Adjust the position of earth clamp

STICK SERIES EQUIPMENT

CHAPTER 2


E-Series

33

34

Summary


STICK SERIES EQUIPMENT STICK SERIES EQUIPMENT

1.3 Specifications E161/E201

Summary

E161, E201, E221, E301, E401 welding machines adopts the latest pulse width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module,

which can change work frequency to medium frequency so as to replace the traditional

hulking work frequency transformer with the cabinet medium frequency transformer. Thus,

its characterized with portable, small size, light weight, low consumption and etc.

E161,E201,E221,E301,E401 STICK machines Characteristics:


◆ high voltage for arc igniting to ensure the success ratio of igniting arc.

◆ Lift TIG operation, If the tungsten electrode touches the workpiece when welding,

the current will drop to short-circuit current to protect tungsten.


◆ IN DC TIG operation electrode touches the workpiece when welding, the current

will drop to short-circuit current to protect tungsten.

◆

Intelligent protection: over-current, over-heat, when the mentioned problems



◆ Anti-Stick function automatically appeared when the electrode stick to the work piece more than 2 seconds, thus the output current come down to around 20A in order to easily seperate the electrode and electrode holder to protect the welder .

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases




( STICK Mode)

VECTOR DIGITAL E161 STICK

9.6kg


Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

10 - 160A




Requirement

19.8A

31.4A

10.8KVA


10 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

20 - 200A

22.8A

41.7A

14.4kVA

STICK (MMA)



Protection Class

160A @ 40%, 26 .

4V

101A @100%, 24V

66V DC

IP23

200A @30%, 28V

110A @ 100%, 24.4V

66V DC

IP23


The working principle of E161/E201/E221/E301/E401 welding machines is shown as the following figure. Single-phase 230V work frequency AC is rectified into DC(about

312 V), then is converted to medium frequency AC (about 20-40KHz) by inverter device

(IGBT module), after reducing voltage by medium transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery diodes),then is outputted DC .The

circuit adopts current feedback control technology to insure current output stably.

Meanwhile, the welding current parameter can be adjusted continuously and steplessly to meet the requirements of welding craft.

NOTE

Due to variations that can occur in manufactured products, claimed performance, voltages,

ratings, all capacities, measurements, dimensions and weights quoted are approximate only. Achievable capacities and ratings in use and operation will depend upon correct installation, use, applications, maintenance and service.

230V


E161/E201



◆ 3M Power cable


35

Summary


1.5 Duty Cycle

The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 40% duty cycle, 200 amperes at 28 volts. This means that it has been designed and built to provide

the rated amperage (200A) for 4 minutes, i.e. arc welding time, out of every 10 minute period (40% of 10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period

the Welding Power Source must idle and be allowed to cool.

4 0

3 0

2 0

1 0

0

0

1 0 0

9 0

8 0

70

6 0

5 0

E161 STICK


(STICK)

1 0 0 12 0

E201 STICK

1 4 0 1 6 0 1 8 0 20 0 2 20


2 4 0 2 6 0 2 8 0 3 0 0 3 2 0

1.6 Specifications E221

36

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases



Welding Current Range ( STICK/ TIG Mode)



Single Phase Generator Requirement

Welding Output, 40ºC, 10 min. STICK (MMA)

Welding Output, 40ºC, 10 min. TIG


Protection Class


10 .

59 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

10 - 200A/5-170A

26.3A

41.7 A

14.4KVA

200A @ 40%, 28V 126A @ 100%, 25V

200A @ 40%, 18V 126A @ 100%,15V

66V DC

IP23


Summary

NOTE

Due to variations that can occur in manufactured products, claimed performance, voltages,

ratings, all capacities, measurements, dimensions and weights quoted are approximate only. Achievable capacities and ratings in use and operation will depend upon correct installation, use, applications, maintenance and service.

1 0 0

90

8 0

7 0

6 0

5 0

40

3 0

20

10

0

0


E221

◆ 200 A electrode holder with 3M cable.

◆ 200 A earth clamp with 3M cable


◆ 3M Power cable


1.8 Duty Cycle


the rated amperage (200A) for 4 minutes, i.e. arc welding time, out of every 10 minute period (40% of 10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period



(TIG&STICK)

1 0 0 120

E221 STICK/TIG

140 160 180 2 0 0 220


240 260 280 300 320

37

Summary


1.9 Specifications E301/E401

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases




( STICK Mode)




Requirement

STICK (MMA)



Protection Class


19.2 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

3

400V +/- 15%

50/60Hz


26.3 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

3

400V +/- 15%

50/60Hz

30 - 300A

13.6A

17.5 A

18.2KVA

300A @ 60%, 32V

232A @ 100%, 29.3V

66V DC

IP23

30 - 400A

20

26

.

.

4A

3A

27.3kVA

400A @ 60%, 36V

310A @ 100%, 32.4V

66V DC

IP23

NOTE

Due to variations that can occur in manufactured products, claimed performance,voltages, ratings, all capacities, measurements, dimensions and weights quoted are approximate only. Achievable capacities and ratings in use and operation will depend upon correct installation, use, applications, maintenance and service.

38


E301 / E401

◆ 300 A electrode holder with 3M cable


◆ 3M Power cable



1.11 Duty Cycle

Summary


the rated amperage (400A) for 6 minutes, i.e. arc welding time, out of every 10 minute period (60% of 10 minutes is 6 minutes).During the other 4 minutes of the 10 minute period


1 00

9 0

8 0

7 0

6 0

5 0

4 0

3 0

2 0

1 0

0

0 1 0 0


(STICK)

1

3

0

E301 STICK

1

6

0

19

0

22

0

25

0

28

0


31

0

E401 STICK

33

0

36

0

39

0

42

0

2.1 Layout For The Panel E161 /E201

33

66

44

55

77 88

11

22

39

Operation


WARNING

DO NOT TOUCH the electrode wire while it is being fed through the system. The electrode wire will be at welding voltage potential.

1. Power Indicator

The green power indicator will be illuminated when the welder is turned ON and indicates

the presence of power.








3.Digital Display

The digital meter is used to display the pre-set (preview) amperage for welding, the preset parameters in Hot start, start time amd Arc force and actual welding amperage of the power source when welding.

4.Selecting Function Button

Setting ranges

Arcforce:1-100AMP Hot Start:0.1-0.5S Hotstart current:1-100 AMP

Press and release this button to change the selected weld functions mode from welding current to hotstart to start time to ARC Force from the digital display.

5.Positive Control

The positive control is used to plus setting parameter for selected function from 4.

6.Negative Control

The negative control is used to minus setting parameter for selected function from 4.

7. Negative Welding Output Terminal

The negative welding terminal is used to connect the welding output of the power source to the appropriate welding accessory such as electrode holder. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

8. Positive Welding Output Terminal

The positive welding terminal is used to connect the welding output of the power source to the appropriate welding accessory such as earth clamp. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

40

CAUTION

Loose welding terminal connections can cause overheating and result in the male plug being fused in the bayonet terminal.

STICK

4

5

6

7

SERIES EQUIPMENT

2.2 Layout For The Panel E221

11

22

3

8

9

11

10

WARNING













41

Operation


3.Weld Process Selection Button

Press and release this button to change the selected weld process mode from LIFT TIG to STICK. The weld process will change to the next process in the sequence each time the button is pressed and released. The green indicators next to the button will illuminate to identify LIFT TIG or STICK process mode.






Press and release this button to change the selected weld functions mode from welding current to hotstart to start time to ARC Force from the digital display.




The negative welding terminal is used to connect the welding output of the power source to the appropriate welding accessory such as electrode holder. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

9. Shielding Gas Outletl

The Shielding Gas Outlet located on the front panel is a fast connection of a suitable TIG

Torch.



Power Source circuitry.



The positive welding terminal is used to connect the welding output of the power source to the appropriate welding accessory such as earth clamp. It is essential, however, that

the male plug is inserted and turned securely to achieve a sound electrical connection.

CAUTION


42

STICK

2.3 Layout For The Panel E301/E401

5

6

7

8

SERIES EQUIPMENT

11

22

3

4

9

10

Operation

WARNING













3.Prevent Electric Shock

The VRD button on the front panel is illuminated when pressing the VRD indicator, at the

same time the no-load voltage is lower than 15V and the output terminal is not harmful

to the human body.When the button is pressed again, the VRD indicator light goes out,

and the output is now at 71V.

43

Operation



Press and release this button to change the selected weld functions mode from welding

current to hotstart to start time to ARC Force from the digital display.







8.Positive Welding Output Terminal

The positive welding terminal is used to connect the welding output of the power source

to the appropriate welding accessory such as earth clamp. It is essential, however,that

the male plug is inserted and turned securely to achieve a sound electrical

connection.

9.Negative Welding Output Terminal

The positive welding terminal is used to connect the welding output of the power source to the appropriate welding accessory such as electrode holder. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.



Power Source circuitry.


CAUTION


2.4 Set-up For LIFT TIG (GTAW) Welding (only for E221)

Before any welding is to begin, be sure to wear all appropriate and recommended safety equipment.

44


Operation

NOTE

The following steps will assume that you have already set up the proper shielding gas as outlined in Sub Section

NOTE

The following set up is known as Straight Polarity or DC Electrode Positive. This is commonly used for DC LIFT TIG welding on most materials such as steel and stainless steel.

1.Switch the ON/OFF Switch (located on the rear panel) to OFF.

2.Connect the work earth clamp to the positive output terminal, and the LIFT TIG Torch

cable to the negative output terminal. Refer to Figure 5-02.

3.Connect the gas line/hose to the proper shielding gas source and connect the aviation

plug for trigger switch to 5 pin control socket Refer to Figure 5-02.

4.Slowly open the Argon Cylinder Valve to the fully open position.

5.Connect the work earth clamp to your work piece.

6.The tungsten must be ground to a blunt point (similar to a pencil) in order to achieve

optimum welding results. (Refer to Figure: 5-01). It is critical to grind the tungsten

electrode in the direction the grinding wheel is turning. Grind at a 30 degree angle and

never to a sharp point.

2 to 2-1/2 Times Electrode Diameter

Electrode

Figure:5-01

7.Install the tungsten with approximately 1.6mm to 3.2mm sticking out from the gas cup,

ensuring you have correct sized collet.

8.Tighten the back cap.

9.Turn the switch to the “ON” position. The power L.E.D. light should illuminate.

10.Set the welding process to LIFT TIG.

11.Set the Weld Current from the positive and negative control to the required amperage.

12. You are now ready to begin LIFT TIG Welding.

45

Operation

STICK SERIES EQUIPMENT power supply

Ar./GAS(TIG/WIG)


Operation

NOTE

To weld, gently strike the electrode on the work piece to generate a welding arc, and slowly

move along the work piece while holding a consistent arc length above base metal. power supply

TIG torch

Earth clamp

46

Figure:5-02


WARNING

Before any welding is to begin, be sure to wear all appropriate and recommended safety equipment.

NOTE

The following set up is known as DC Electrode Positive or reverse polarity. Please consult

with the STICK electrode manufacturer for specific polarity recommendations.


2.Attach the STICK and work earth clamp as shown in Refer to Figure 5-03

3.Set the welding process to STICK.

4.Set the welding current from the positive and negative control to the desired amperage.

Set the different requirements for the hot start ,start time and arc force too.

5.Install a STICK electrode in the electrode holder.

6.You are now ready to begin STICK Welding.

Earth clamp

Figure:5-03


WARNING

There are extremely dangerous voltage and power

levels present inside this product. Do not attempt to open or repair unless you are a qualified electrical tradesperson and you have hard training in power measurements and troubleshooting techniques.

If major complex subassemblies are faulty, then the Welding Power Source must be returned to an accredited reseller for repair. The basic level of troubleshooting is that which can be performed without special equipment or knowledge. Refer also to section

6.01-6.02 for solving welding problems.

47

48

Troubleshooting


Nr.

1

2

3

Troubles source, power

Reasons

Fan is broken

There is something in the fan is not working.












4

Solution

Change fan

Clean it

Change capacitor


Change it

Change it

Connect correctly

Repair or change it

Change it

Change the light of the power indicator or refer to the solution in Nr. 2

Change it

Change it

Replace it

5




Change it

6

7

8

9

10


(MMA)




Gas always flows




Air tube is brocken






Check and repair



Remove it

Change it

Change it

Check gas

Remove it

Change it




Repair or change it


The welding current displayed isn't accordant with the actual value




Adjust potentiometer Imax on the control board


Troubleshooting

Nr.

11

Troubles

The penetration of molten pool is not enough

12

Thermal overload


13

14

Tig electrode melts

when welding

Arc flutters during

Tig welding

Reasons

The welding current is adjusted too

low





much time



Fan is broken




Solution








Change the fan




49

50

C-SERIES

CUTTING SERIES EQUIPMENT

CHAPTER 3



Summary


C41, C71 and C101 plasma cutting machines adopts the latest pulse width modulation

(PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer. Thus, its characterized with portable, small size, light weight, low consumption and etc.

C41 , C71 and C101 plasma cutting machines Characteristics:

◆ IGBT technology

◆ With EMI filter to minimize the pollution of the electrified net

◆ High mains voltage tolerance ± 15%to maintain stable work .


◆ Excellent cutting capability.

◆ P ilot arc controller, can cut grid workpiece




1.2 Specifications C41

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases




(CUT)




Requirement

(CUT)



Protection Class

VECTOR DIGITAL C41 CUT

11 kg

H395mmxW/180mmxD370mm

Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

20 - 40A

18A

28.5A

9.9kVA

40A @ 40%, 96V

25A @ 100%, 90V

330V DC

IP23

51

Summary

NOTE


C41

◆ Plasma Torch 6m S45


◆ 3M Power cable

◆ 3M Gas Hose 8x13.5



Due to variations that can occur in manufactured products, claimed performance, voltages, ratings, all capacities, measurements, dimensions and weights quoted are approximate only. Achievable capacities and ratings in use and operation will depend upon correct installation, use, applications,maintenance and service


Summary


Description

Weight


Cooling

Welder Type

European Standards

Number of Phases



Welding Current Range (CUT)




18.8 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

3

400V +/- 15%

50/60Hz

20 - 70A

10.7A

13.8A


Requirement



Protection Class

14.3kVA

70A @ 60%, 108V 54A @ 100%, 101.6V

300V DC

IP23

1.4 Duty Cycle

The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 40% duty cycle, 40 amperes at 96 volts. This means that it has been designed and built to provide the rated amperage (40A) for 4 minutes, i.e. arc welding time, out of every 10 minute period (40% of 10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period the Welding Power Source must idle and be allowed to cool.

1 0 0

9 0

8 0

7 0

6 0

5 0

4 0

3 0

2 0

1 0

0

0

Safe

Operating

Region

25 5 0

C41 CUT

75 10

0 1

25 150 175


2

0

0 2

25

2

5

0

275

3

00

NOTE



C71

◆ Plasma Torch 6m PT80


◆ 3M Power cable

◆ 3M Gas Hose 8x13.5

◆ Air Regulator


1.7 Duty Cycle

52 53

54

Summary


The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 60% duty cycle, 70 amperes at 108 volts. This means that it has been designed and built to provide the rated amperage (70A) for 6 minutes, i.e. arc welding time, out of every 10 minute period (60% of 10 minutes is 6 minutes). During the other 4 minutes of the 10 minute period


100

90

80

70

60

50

4 0

30

2 0

10

0

0

Safe

Operating

Region

C71 CUT

25 5 0

75 10

0 1

25 150 175


2

0

0


2

25

2

5

0

275

3

00

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases



Welding Current Range (CUT)




27.6 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

3

400V +/- 15%

50/60Hz

20 - 100A

17A

21.9A


Requirement



Protection Class

22.8kVA

100A @ 60%, 120V 77.5A @ 100%, 111V

300V DC

IP23


Summary

NOTE



C101

◆ Plasma Torch 6m PT100


◆ 3M Power cable


1.10 Duty Cycle

The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 60% duty cycle, 100 amperes at 120 volts. This means that it has been designed and built to provide the rated amperage (100A) for 6 minutes, i.e. arc welding time, out of every 10 minute period (60% of 10 minutes is 6 minutes). During the other 4 minutes of the 10 minute period


5 0

40

3 0

20

1 0

0

0

1 00

90

8 0

70

6 0


25 5

0

C101 CUT

75 10 0 1 25 150 175


2 0 0 2 25 2 5 0 275 3 00

55

Operation

CUTTING SERIES EQUIPMENT CUTTING SERIES EQUIPMENT

Operation

2.1 Layout For The Panel C41

WARNING

1

4

7

8

11

2

6

3

9

5

6. Air pressure Fauty Indicator

Air pressure low alarm.


The positive control is used to plus current .

8. Negative Controll

The negative control is used to minus current.

9.Barometer

The barometer shows the present air pressure.

10


The positive cutting terminal is used to connect the cutting output of the power source to the appropriate welding accessory such as earth clamp. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

11.Plasma Torch Connector

Plasma torch insert in to connect with the machine. It’s necessary to be sure that the

plug is correctly and tightly connected to maintain the electricity and gas supply.

DO NOT TOUCH the electrode wire while it is being fed through the system. The electrode wire will be at welding voltage potential.

CAUTION


1. Digital Display

The digital meter is used to display the pre-set (preview) amperage for cutting and the

actual cutting current.


The green power indicator will be illuminated when the welder is turned ON and indicates the presence of power.

3. Work Indicator

Turn on the switch of the cutting gun, generate the voltage, the lamp on.









5. Plasma Torch Fauty Indicator

Cutting gun improper installation alarm.


1

10

9

8

11

12

2

3

4

5

6

7

56 57

Operation


WARNING
















4. Air Pressure/ Cutting Torch Fauty Indicator

Cutting torch improper installation and air pressure low alarm.


Turn on the switch of the cuttign gun,generate the voltage, the lamp on.

6. Grid Cut Indicator

Press and release button from 8 to change the selected cutting functions mode, light on , the function is selected.

7. Normal Cut Indicator

Press and release button from8 to change the selected cutting functions mode, light on , the function is selected.

8. Cut function Select Button

Press and release this button to change the selected cutting functions mode.




The positive control is used to plus current .



12. Plasma Torch Connector



58

CUTTING


1

11

10

9

12

SERIES EQUIPMENT

2

3

4

5

6

7

8

13

Operation

WARNING


1.Barometer

The barometer shows the present air pressure.





The green power indicator will be illuminated when the welder is turned ON and in

dicates the presence of power.









59

Operation


5. Air Pressure/Cutting Torch Fauty Indicator

Cutting Torch improper installation and air pressure low alarm.


Turn on the switch of the cuttign gun,generate the voltage, the lamp on.

7. Grid Cut Indicator


8. Normal Cut Indicator


9. Cut function Select Button

Press and release this button to change the selected cutting functions mode.


The positive control is used to plus current.





13. Plasma Torch Connector



CAUTION


2.4 Steel Cutting Capability (Thickness to scale.)

Capacity

Quality Cutting Thickness

(500mm/min)

Maximum Cutting Capacity

C41

Thickness

Cutting

10mm

20mm

C71

Thickness

Cutting

20mm

30mm

C101

Thickness

Cutting

30mm

50mm

60


Operation

2.5 Installation Instructions

In order for the unit to function correctly, it must be installed properly. Follow the procedure

given below for correct installation:

1. Read the safety rules given in this manual carefully.

2. Check on receiving the unit that there are no defective parts or parts damaged during

transportation.

3. Attach air regulator as show in picture Air Regulator Installation only for C71.

4. Set your unit up in an area which is adequately ventilated and make sure that the air

vents are not obstructed.

5. Connect the power supply cable to a socket located as near as possible to the work area,

so that the unit can be switched off quickly in case of emergency.

6. Your machine has a 16 amp plug fitted, before use check that the green/yellow earth is

connected to the earth pin socket of fitted plug.

7. Make sure that the mains supply switch and any fuses have a value which ± 15% the

maximum current absorbed by the unit. All fuses should be the slow-blow type.

8. Any extensions of power supply cable should have the same cross-section as the power

supply cable. The extension leads, however, should only be used when absolutely

necessary. It is important to note that any extension of mains cables or torch cables will

possibly affect the cutting performance of this cutting equipment, due to the fact that the

resistance of the cable will reduce voltage input, which is determined by the length of the

cable. The supplied length of main cables and torch cables is recommended.

9. Fasten the earth clamp to the piece to be cut, If the surface of the piece to be cut is

painted, rusty or covered with insulating material, clean the surface so that

satisfactory contact between the piece and the earth clamp can be obtained.

10. Make sure that the torch has been assembled with the correct components and that the

cutting tip is suitable for the cutting current.

11. Connect air to regulator and adjust regulator to deliver 5-6 bar 90ltr/min

12. Switch the unit on using the main switch located on the back side.

13. press the cutting torch to achieve a pilot from the copper tip, when this pilot is up to the

work piece , cutting operation begins.

14. Once cutting is over, release the torch button to put out the arc. A period of post-flow

time 45 to 75 seconds (required for torch cooling) will follow. Do not disconnect air

until this cooling period has been completed. Failure to do this will result in torch head

damage.

61

62

Operation


CAUTION

Do not point the torch jet at foreign bodies.

CAUTION

Avoid unnecessary lighting of the pilot arc toprevent excessive consumption of the electrodeand nozzle.

CAUTION

During cutting the speed of the torch movement should be in accordance with the thickness of the piece to be cut. Excessive speed causes a return of incandescent towards the torch which shortens the life of the parts of the torch most subject to wear and tear. The metal fouling on the nozzle should be removed as soon as possible. power supply

Air compressor


Operation

Air regulator installation and operation

1. Firmly tight and seal the copper air hole at IN and OUT terminal by high

pressure rubber tube .

2.Tight and seal the meter with meter face rubber tube.

3.Fix the connecting shelf with screw as the regulator position.

4.Get down the plastic screw and fix the regulator on the shelf.

5.Turn on the air valve, turn up the pressure adjusting knob, turn the pressure

volume (meter inside shows kg), and then put down the knob.(+ means increasing

pressure, -- means decreasing pressure.)

6.Scale of the meter is as follow. The volume in the picture is 6 kg.

7. If the water in thegas filtering bottle is too much, please turn on the water valve to

let the water go out.

Compressed air

Pressure adjusting knob

Connecting shelf

Pressure meter

Air in

Air out

Air filting bottle

Air pipe

Drainage interface

Cutting torch

63

64

Troubleshooting





the equipment!




machine!


the equipment!



If there are some simple troubles of WSME-series welding machine, you can consult

the following overhauling chart:

Nr.

1

2

3

4

5

Troubles

Turn on the power source, power indicator is lit, fan and air control valve are

not working


Turn on the power source, fan is not working, power indicator is not lit

Turn on the power

source, Torch/Gas

indicator is on

The over-heat alarm is on after a few minutes cutting

Reasons

Fan is broken and the control board

broken

There is something in the fan and

the control board broken


and the control board broken

Solution

Change fan and control board

The input lines not corretly connected

Clean it and change the control board

Change capacitor and control board

Connect correctly





The power cable connected not

good


Change it

Change it

Connect correctly




Repair or change it

Change it

Change the light of the power indicator or refer to the solution in Nr. 2

Change it

The shield cup is unfitted installation

The tip or electrode is unfitted installation

Install and screw properly

Install and screw properly

Gas pressure too low

Adjust the gas pressure to 65psi/

4.5 bar,the barometer indicate up to 0.4Mpa or 60psi.

Check and change Cutting torch is broken or mistake

The input or output of the air flow around the machine is blocked

Fan blocked

Correct the condition

Over-heat appear

Input voltage is not correct

Check and correct it let meachine cool down 5 minutes and make sure the duty cycle is not exceeded

Choose the proper voltage


Troubleshooting

Nr.

6

7

8

Troubles

When torch is pressed the torch failed to ignite the

arc

Reasons

Torch parts broken

Gas pressure too low or too high

Faulty components in the machine

Consult the dealer or manufacturer to repair


The gas distributor is uninstalled

Adjust it to proper rate


Install it

Check and change the torch parts

When torch is pressed the torch is difficult to ignite

Torch parts are worn

Machine is in trouble

Gas pressure too low or too high


After triggering the torch ,the pilot arc cannot change to the cutting pilot

The connection between cutting torch and machine is not correct o r the connection is poor

Earth clamp not correctly connect to

the work piece

The cutting torch is broken

Solution

Inspect torch parts and replace if necessary

Consult the dealer or manufacturer to repair

Adjust it to proper rate


Check the torch leads are properly connect to the machine

Make sure the earth clamp has a proper connection to a clean and dry area of the workpiece

Change or repair it

Power supply is overheated let meachine cool down 5 minutes and make sure the duty cycle is not exceeded

9

Arc shuts off during operation and it will not restart when torch is triggered

Gas pressure too low , the torch/gas indicator is on when torch switch is pressed

Torch consumbles are worn

Check and adjust the gas setting

at least 65psi/4.5 bar

Check and replace

10

11

12

The power indicator

is on ,fan is working

Gas pipe not connected or pressure

is too low

Faulty components in the machine

Check the gas connection, adjust the

proper setting

Consult the dealer or manufacturer

to repair

Change it Air regulator is broken low cutting output

Incorrect setting of cutting current

to repair

Torch can cut but the quality is poor

Cutting current is too low Increase the cutting current lack of air pressure Check the air pressure and air flow

65

66

T-SERIES

DC PULSE SERIES EQUIPMENT

CHAPTER 4



Summary


T231/T331 welding machine adopts the latest pulse width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer. Thus, its characterized with portable, small size, light weight, low consumption and etc.

The parameters of T231/T331 on the front panel all can be adjusted continuously and steplessly, such as start current, crater arc current, welding current, base current, duty ratio, upslope time, downslope time, pre-gas, post-gas, pulse frequency, hot start, arc force and length etc. When welding, it takes high frequency and high voltage for arc igniting to ensure the success ratio of igniting arc.

T231/T331 Characteristics:



igniting arc.

◆ With special means, even if arc-break occurs the HF will keep the arc stable.







◆ purposes: DC inverter TIG, Excellent performance on carbon steel,

stainless steel, titanium etc.

According to choosing the front panel functions, the following four welding ways can be realized.

DC MMA

DC TIG

DC Pulse TIG

1. For DC MMA, polarity connection can be chosen according to different electrodes;

2. For DC TIG, DCEP is used normally (workpiece connected to positive polarity, while

torch connected to negative polarity). This connection has many characters, such

as stable welding arc, low tungsten pole loss, more welding current, narrow and

deep weld;

3. DC Pulsed TIG has the following characters:

1) Pulse heating. Metal in Molten pool has short time on high temperature status

and freezes quickly, which can reduce the possibility to produce hot crack of the

materials with thermal sensitivity .

67

Summary


2) The workpiece gets little heat. Arc energy is focused. Be suitable for thin sheet

and super thin sheet welding.

3) Exactly control heat input and the size of the molten pool. The depth of penetration

is even. Be suitable for welding by one side and forming by two sides and all position

welding for pipe.

4) High frequency arc can make metal for microliter fabric, eliminate blowhole and

improve the mechanical performance of the joint.

5) High frequency arc is suitable for high welding speed to improve the productivity.

T231/T331 –series welding machines is suitable for all positions welding for

various plates made of stainless steel, carbon steel, alloyed steel, titanium, magnesium,

cuprum, etc, Which is also applied to pipe installment, mould mend, petrochemical,

architecture, decoration, car repair, bicycle, handicraft and common manufacture.

MMA-------Manual Metal Arc Welding

PWM-------Pulse-Width Modulation

IGBT--------Insulation Gate Bipolar Transistor

TIG----------Tungsten Insert Gas Welding


The working principle of T231/T331 welding machines is shown as the following figure. Single-phase 230V work frequency AC is rectified into DC(about 312 V), then

is converted to medium frequency AC (about 20-40KHz) by inverter device (IGBT module), after reducing voltage by medium transformer (the main transformer) and rectifying rectifying by medium frequency rectifier (fast recovery diodes),then is outputted DC .The circuit adopts current feedback control technology to insure current output stably.

Meanwhile, the welding current parameter can be adjusted continuously and steplessly

to meet the requirements of welding craft.

230V

68



T231/T331 welding machine has an excellent volt-ampere characteristic, whose graph is shown as the following figure. The relation between the and the conventional welding current

When I

2

≤ 600A, U =10+0.04I (V);

Summary

1.4 Specifications T231/T331

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases




(DC STICK Mode)


(DC TIG Mode)




Requirement

T231

10.9 kg


Fan Cooled


T331

19.6 kg


Fan Cooled

EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz


EN 60974-1 / IEC 60974-1

3

400V +/- 15%

50/60Hz

5 - 200A

5 - 200A

32.3A

41.7A

14.4kVA

30 - 250A

10 - 300A

8.6A

13.7A

14.2KVA

STICK (MMA)


200A @ 60%, 28V

110A @ 100%, 24.4V

250A @ 40%, 30V

158A @ 100%, 26.3V

TIG (GTAW)



Protection Class

200A @ 60%,18V

155A @ 100%, 16.2V

66V DC

IP23

300A @40%, 22V

190A @ 100%, 17.6V

66V DC

IP23

69

Summary


NOTE







1.5 Duty Cycle

The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at

a 40% duty cycle, 300 amperes at 22 volts. This means that it has been designed and

built to provide the rated amperage (300A) for 4 minutes, i.e. arc welding time, out of every 10 minute period (40% of 10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period the Welding Power Source must idle and be allowed to cool. The thermal cut out will operate if the duty cycle is exceeded.

1 0 0

9 0

8 0

7 0

6 0

5 0

4 0

3 0

2 0

1 0

0

0

T231 stick

T231TIG


(TIG&STICK)

T331 stick

T331 TIG

1 0 0 1 2 0 14 0 1 6 0 1 8 0 2 0 0 220


2 4 0 2 6 0 2 8 0 3 0 0 3 2 0

70



T231

◆ 3M Power cable

◆ 200 Amp electrode holder with 3M cabl .



◆ 3M Gas Hose


Operation

T331

◆ 3M Power cable




◆ 3M Gas Hose


2.1 Layout For The Panel T231/T331

8

5

6

7

9

11

1

3

2

4

10

12

71

Operation





Thermal Overload Indicator Light








are available, GTAW (TIG) and MMA (Stick) modes.



2T and 4T.






4. Pulse Button


Operation

Press & hold

Trigger

Release

Trigger

72














100-500 PPS).


73

Operation



The Negative button is used to minus selected in Programming sequence..

Positive Control

The Positive button is used to plus selected in Programming sequence..

Selecting Function Button

This button can select different programming parameter







7. Hot Start



I t

Arcforce Correction



If the electrode sticks in spite of the arcrorce device, the machine automatically switches over to the minimum current within about 1 second to prevent the electrode from overheating. In order to easily separate the electrode and electrode holder to protect the welder.

Antistick

U

I

8. JOB and SAVE


For the new setting of present current Amps ,just press SAVE.





74


Operation







TIG Torch.





CAUTION



1 .

Gas Pre-Flow

T231: Absolute setting range 0.1s to 5s (0.1S increments)

T331: Absolute setting range 0.1s to 20s (0.1S increments)

This parameter operates in TIG modes only and is used to provide gas to the weld zone prior to striking the arc, once the torch trigger switch has been pressed. This control is used to dramatically reduce weld porosity at the start of a weld.


T231: The main current Setting range 5AMP to 200AMP

T331: The main current Setting range 10AMP to 300AMP




current.

75

76

Operation


3.Up Slope



4.Peak Current

Setting ranges

T231:5AMP to 200AMP ( DC TIG ), 5 200A ( Stick mode )

T331:10AMP to 300AMP ( DC TIG ), 30 250A ( Stick mode )


5.Base Current

Setting ranges

T231:5AMP to 200AMP (DC TIG mode), 5AMP to 200AMP (STICK mode)

T331:10AMP to 300AMP (DC TIG mode), 10AMP to 300AMP (STICK mode)


6.Pulse Width






8.Down Slope





9.End Current

T231:Setting ranges 5A-200A

T331:Setting ranges 10A-100A




current.

10. Post Flow



Operation





WARNING

CAUTION

CAUTION



Power Source.


power supply

77

78

Operation


2.4 Set-up For LIFT TIG (GTAW) Welding



WARNING

NOTE











to a sharp point.







power supply power supply

Ar./GAS(TIG/WIG)



Operation


◆ Operation temperature range: -10˚C~+40˚C.

◆ Relative humidity is below 90% (20˚C).

◆

Preferably site the machine some angles above the floor level, the maximum








equipment.





unprotected eyes.

◆ Ensure good ventilation of the machine to improve duty ratio.





TIG torch

79

80

Troubleshooting





the equipment!




machine!


the equipment!





Nr.

1

2


Turn on the power source, power indicator is lit, fan is not working.

Fan is broken







3

4









Solution

Change fan

Clean it

Change capacitor


Change it

Change it

Connect correctly

Repair or change it

Change it


in Nr. 2

Change it

Change it

Replace it

Change it

5





Change it


Nr.

Troubles

6


(MMA)

7

Arc can not be


on the HF

igniting board

Troubleshooting

Reasons


Solution



Check and repair The main circuit is broken







the welder's output

Repair or change it




Reduce the distance



Check and reconnect

Input voltage not stable Check the power supply

8

9

10

11







Check and reconnect



HF igniting


HF board is broken





No gas flow (TIG) Electromagnetic valve is damaged

Air tube is brocken



Gas always flows


Repair or change it


Check and reconnect


Remove it

Change it

Change it

Check gas

Remove it

Change it

81

82

Troubleshooting


Nr.

12

Troubles


13 current displayed

isn't accordant with the actual value

14

15

16

17


Arc flutters during

Tig welding

Thermal overload


Tig electrode melts

when welding

Reasons


Solution













much time



Fan is broken













Change the fan


MULTIFUNCTION SERIES EQUIPMENT

CHAPTER 5


O-SERIES

83

84

Summary



O241, O251 welding machines adopts the latest pulse width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can change work frequency to medium frequency so as to replace the traditional hulking ork frequency transformer with the cabinet medium frequency transformer. Thus, its characterized with portable, small size, light weight, low consumption and etc.

The parameters of on the front panel all can be adjusted continuously and steplessly, such as start current, crater arc current, welding current, base current, duty ratio, upslope time, downslope time, pre-gas, post-gas, pulse frequency, AC frequency, balance, hot start, arc force and length etc. When welding, it takes high frequency and high voltage for arc igniting to ensure the success ratio of igniting arc.

O241 O251 machines Characteristics::



igniting arc, the reverse polarity ignition ensures good ignition behavior in TIG-AC

welding.

◆ Avoid AC arc-break with special means, even if arc-break occurs the HF will keep

the arc stable.







◆ Double purposes: AC inverter TIG and DC inverter TIG/MMA, Excellent

performance on AL-alloy, carbon steel, stainless steel, titanium.


Summary


The working principle of O241/O251 welding machines is shown as the following figure.

Single-phase 230V work frequency AC is rectified into DC (about 312 V), then is converted to medium frequency AC (about 20-40KHz) by inverter device (IGBT module), after reducing voltage by medium transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery diodes), then is outputted DC or AC by selecting IGBT module. The circuit adopts current feedback control technology to insure current output stably. Meanwhile, the welding current parameter can be adjusted continuously and steplessly to meet with the requirements of welding craft.

230V,50Hz


O 2 4 1 / O 2 5 1 w e l d i n g machine has an excellent volt-ampere characteristic, whose graph is shown as the following figure. The r e l a t i o n b e t w e e n t h e conventional rated loading

-ntional welding current

TIG

When I

2

2

≤ 600A, U =10+0.04I (V);

2

2

When I >600A,U =34(V).

MMA

When I

2

2

≤ 600A, U =20+0.04I (V);

2

2

When I >600A,U =44(V).

CUT

2

≤ 600A, U =80+0.4I (V);

85

Summary

1.4 Specifications O241/O251

Description

Weight


Cooling

Welder Type

European Standards

Number of Phases




(DC STICK Mode)


(DC TIG Mode)


(CUT Mode)




Requirement

STICK (MMA)


TIG (GTAW)


O241

20.9 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

O251

31 kg


Fan Cooled


EN 60974-1 / IEC 60974-1

1

230V +/- 15%

50/60Hz

10 - 170A

10 - 170A

15 - 40A

26.2A

33.9A

11.7kVA

10 - 200A

10 - 200A

20 - 40A

29.5A

41.7A

14.4KVA

CUT


Open circuit voltage (MMA/TIG)

Open circuit voltage （ CUT )

Protection Class

170A @ 60%, 26.8V

132A @ 100%, 25.3V

170A @ 60%, 16.8V

124A @ 100%, 15V

40A @ 60%, 96V

31A @ 100%, 92 .

4V

66V DC

236V DC

IP23

200A @ 50%, 28V

141A @ 100%, 25.6V

200A @ 50%, 18V

141A @ 100%, 15.6V

40A @ 60%, 96V

31A @ 100%, 92 .

4V

66V DC

270V DC

IP23

NOTE







86

MULTIFUNCTION SERIES EQUIPMENT MULTIFUNCTION SERIES EQUIPMENT

1.5 Duty Cycle

Summary

The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 50% duty cycle, 200 amperes at 28 volts. This means that it has been designed and built to provide the rated amperage (200A) for 5 minutes, i.e. arc welding time, out of every 10 minute period (50% of 10 minutes is 5 minutes). During the other 5 minutes of the 10 minute period the Welding Power Source must idle and be allowed to cool. The thermal cut out will operate if the duty cycle is exceeded.

O241 CUT

Safe

Operating

Region

(CUT)

5 0

O241 TIG


(TIG&STICK)

10 0 1 25

O241 STICK

2 0 0 2 25 2 5 0 3 00

O251 STICK/TIG

O251 CUT

Safe

Operating

Region

(CUT)


(TIG&STICK)

5 0

10 0 1 25


2 0 0 2 25 2 5 0 3 00

87

88

Operation



O241/O251

◆ 3M Power cable

◆ 200 Amp Electrode Holder With 3M cable

◆ 200 Amp earth Clamp With 3M cable


◆ Plasma Torch 4.5m AG60

◆ Air Regulator

◆ 3.5M Gas Hose


2.1 Layout For The Panel O241

1 6 2 7

9

10

11

15

17

3

4

5

12

13

14

16

8

21 20 19 18


Operation







2. Current Indicator

When setting programm in the peak current, base current, ending current and rem , this current indicator will be on.

3. Percentage Indicator （%）

Percentage indicator, when setting programm in pulse duty cycle , this indicator will be on .












6. Time Indicator (s)

Time indicator , when setting programm in gas pre-flow, up slope, down slope and gas

post-flow, this indicator will be on.

7. Frequency Indicator (Hz)

Frequency indicator, when the setting programm in pulse frequency ,this indicator will be on.



9. Hot Start



I t

Arcforce Correction


89

90

Operation



If the electrode sticks in spite of the arcrorce device, the machine automatically switches over to the minimum current within about 1 second to prevent the electrode from overheating. In order to easily separate the electrode and electrode holder to protect the welder.

Antistick

U

I

10. JOB


11. SAVE

Store welding function and parameters ， can store 1-9 groups .



2T and 4T.






Operation


The process selection control is used to select the desired welding mode. Three

modes are available, MMA (Stick),GTAW (TIG) and CUT modes.

14. Pulse Button


Press & hold

Trigger

Release

Trigger














100-500 PPS).






17. Selecting Function Button

This button can select different programming parameter from No. 8





91

Operation












TIG Torch.

CAUTION



current.

1 .

Gas Pre-Flow










92


Operation

3.Up Slope



4.Peak Current

Setting ranges

O241:10AMP to 170AMP (DC TIG mode), 10 to 170A (AC HF TIG mode)


5.Base Current

Setting ranges

O241:10AMP to 170AMP (DC TIG mode), 10AMP to 170AMP (AC HF TIG mode)


6.Down Slope





7.End current



The end Current remains ON until the torch trigger switch is released after it has been depressed.


current.

8.Post Flow

Setting ranges 1-10S


9. Remote Control

The system independently identifies the remote control, and when the indicator light is

on, the welding current can be adjusted by remote (foot or welding gun).

10.Pulse Width


This parameter sets the percentage on time of the PULSE FREQUENCY for High

weld current when the PULSE is ON.




93

Operation


2.3 Layout For The Panel O251

5 6 7 8


.

1. RESET button

When software has problem please trigger RESET button.

2. Pulse Button


Operation

94

1

2

3

4

15

16

17 18 20 19

9

10

11

12

13

14












100-500 PPS).




2T and 4T.





95

Operation


Press & hold

Trigger

Release

Trigger



96


The process selection control is used to select the desired welding mode. Three

modes are available, GTAW (TIG), MMA (Stick) and CUT modes.


The digital amperage meter is used to display both the pre-set current and actual output

current of the power source.

At times of non-welding, the amperage meter will display a pre-set (preview) amperage

value. This value can be adjusted by varying the multifunction control when the

Programming Parameter Indicator light shows BASE CURRENT.


Operation

6. Digital Voltmeter / Parameter Meter

The digital volt meter is used to display the actual output voltage of the power source. It is



volt meter will illuminate to show the units of the programming parameter.

When welding, the volt meter will display actual welding voltage.












9. JOB and SAVE





11. HF Button

Press and hold the HF button to purge the gas line in LIFT TIG and HF TIG modes. To HF

the shielding gas line in LIFT TIG and HF TIG modes press the HF button and release.

12. Mode Button

Press the MODE button to toggle AC and DC output in LIFT TIG, HF TIG and STICK.

13. Forward Programming Button

Pressing this button will advance to the next step in the programming sequence.

14. Back Programming Button

Pressing this button will go back to the previous step in the programming sequence.













97

Operation








TIG Torch.

CAUTION



.

Gas Pre-Flow










current.

98

3.Up Slope



4.Peak Current

Setting ranges

O251:10AMP to 200AMP ( DC TIG and AC HF TIG ), 10 200A ( Stick mode )



Operation

5.Base Current

Setting ranges

O251:10AMP to 200AMP (DC TIG mode), 10AMP to 200AMP (AC HF TIG mode)


6.Pulse Width






8.Down Slope





9.End current





current.

10. Post Flow

Setting ranges 1-20S

This parameter operates in TIG modes only and is used to adjust the post gas flow

time once the arc has extinguished. This control is used to dramatically reduce oxidation of the tungsten electrode.




AC weld current.







99

100

Operation


Wider bead and cleaning acting Narrower bead and cleaning acting

12.Wave Balance


This parameter operates in AC TIG mode and is used to set the penetration to cleaning action ratio for the AC weld current. Generally WAVE BALANCE is set to 50% for AC

STICK welding. The WAVE BALANCE control changes the ratio of penetration to cleaning action of the AC TIG welding arc. Maximum weld penetration is achieved when the WAVE BALANCE control is set to 10%. Maximum cleaning of heavily oxidised aluminium or magnesium alloys is achieved when the WAVE BALANCE control is set to

50%

AC Balance Control








13. Hot Start



Operation

14. Arcforce Correction


Antistick

U


If the electrode sticks in spite of the arcrorce device, the machine automatically switches over to the minimum current within about 1 second to prevent the electrode f r o m o v e r h e a t i n g . I n o r d e r t o e a s i l y s e p a r a t e t h e electrode and electrode holder to protect the welder.

I

2.5 Setup For STICK (MMA) Welding O241




WARNING


CAUTION

CAUTION


Power Source.


101

Operation

MULTIFUNCTION SERIES EQUIPMENT power supply


Operation




to a sharp point.







12. You are now ready to begin LIFT TIG Welding. power supply

Ar./GAS(TIG/WIG)

Electrode holdder

2.6 Set-up For LIFT TIG (GTAW) Welding O241



WARNING

NOTE

102








TIG torch

2.7 Setup For Cutting (CUT) O241





transportation.

103

104

Operation


3. Attach air regulator as show in picture Air Regulator Installation only for O241.






















13. Contact the copper tip of the torch to the work piece, press the button of the forch until the arc-starting and raise the cutting torch about 1mm above the work piece, and perform

the cutting operation.




damage.

CAUTION


CAUTION

Avoid unnecessary lighting of the pilot arc toprevent excessive consumption of the electrodeand nozzle.


Operation

CAUTION

During cutting the speed of the torch movement should be in accordance with the thickness of the piece to be cut. Excessive speed causes a return of incandescent towards the torch which shortens the life of the parts of the torch most subject to

wear and tear. The metal fouling on the nozzle should be removed as soon as possible. power supply

Air compressor

2.8 Setup For STICK (MMA) Welding O251




WARNING

CAUTION



Power Source.

105

Operation

CAUTION



power supply

MULTIFUNCTION SERIES EQUIPMENT Operation





to a sharp point.








Ar./GAS(TIG/WIG)

Electrode holdder

TIG torch

2.9 Set-up For LIFT TIG (GTAW) Welding O251

106

WARNING



NOTE

The following set up is known as straight polarity or DC electrode positive. This is commonly used for DC LIFT TIG welding on most materials such as steel and stainless steel.

1. Switch the ON/OFF switch (located on the rear panel) to OFF.

2. Connect the work lead cable to the positive output terminal, and the LIFT TIG torch



4. Slowly open the Argon cylinder valve to the fully open position.

2.10

Setup For Cutting (CUT) O251





transportation.

3. Attach air regulator as show in picture Air Regulator Installation only for O251.

107

108

Operation























13. Contact the copper tip of the torch to the work piece, press the button of the forch until the arc-starting and raise the cutting torch about 1mm above the work piece, and perform

the cutting operation.




damage.

CAUTION


CAUTION

Avoid unnecessary lighting of the pilot arc to prevent excessive consumption of the electrode and nozzle.


Operation

CAUTION

During cutting the speed of the torch movement should be in accordance with the thickness of the piece to be cut. Excessive speed causes a return of incandescent towards the torch which shortens the life of the parts of the torch most subject to

wear and tear. The metal fouling on the nozzle should be removed as soon as possible. power supply

Air compressor



◆ Operation temperature range:-10˚C~+40˚C.

◆ Relative humidity is below 90%(20˚C).

◆ Preferably site the machine some angles above the floor level,the maximum






109

Troubleshooting




equipment.





unprotected eyes.

◆

Ensure good ventilation of the machine to improve duty ratio.








the equipment!




machine!


the equipment!





110

Nr.

1

2

3



Fan is broken









Solution

Change fan

Clean it

Change capacitor


Change it

Change it

Change it

Replace it

Change it


Troubleshooting

Nr. Troubles

4

Reasons


Turn on the power source, fan is not working, power indicator is not lit




5

6

7


(MMA)

Arc can not be


on the HF

igniting board

Solution

Connect correctly

Repair or change it

Change it


in Nr. 2







Change it


Change it



Check and repair



the welder's output

Repair or change it






There is oil or dust on the workpiece Check and remove it


Reduce the distance



Check and reconnect

Input voltage not stable Check the power supply

8

9

10







Check and reconnect



HF igniting


HF board is broken




Gas always flows


Repair or change it


Check and reconnect

Remove it

Change it

111

112

Troubleshooting


Nr. Troubles

10

12

Reasons



Solution



Air tube is brocken


Remove it

Change it

Change it



Check gas




The power board is broken Repair or change it

13

No AC output while selecting

"AC" for O251

The AC drive board damaged

The AC IGBT/IGBT module damaged


Change it

Change it

Repair or change it

14

15

16

17

18

19 current displayed

isn't accordant with the actual value







Thermal overload


Tig electrode melts

when welding

AC Width adjustment is not correct



much time



Fan is broken


Tungsten electrode is too big for the welding current Arc flutters during

Tig welding

When Cut function is selected ,there is

HF but cannot cutting


Check the welding circuit is correct, for example the earth clamp is connected to work piece

Air flow is not correctly connected

Machine is broken






Change to suitable setting





Change the fan




Connect the circuit correctly

Check the air flows


MIG SERIES EQUIPMENT

CHAPTER 6


R-SERIES

113

Summary



R221,R231,R251,R311 MIG welding machines adopts the latest pulse width modulation

(PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer. Thus, its characterized with portable, small size, light weight, low consumption and etc.

R221, R231, R251,R311 MIG machines Characteristics:


◆ High frequency and high voltage for arc igniting to ensure the success ratio of igniting arc.

◆ Lift TIG operation, If the tungsten electrode touches the workpiece when welding,

the current will drop to short-circuit current to protect tungsten.

◆ Simple select material/wire diameter and the stored know-how controls the welding

process automatically





The working principle of R221/R231/R251/R311 welding machines is shown as the

following figure. Single-phase 230V work frequency AC is rectified into DC(about 312

V), then is converted to medium frequency AC (about 20-40KHz) by inverter device (IGBT

module), after reducing voltage by medium transformer (the main transformer) and

rectifying by medium frequency rectifier (fast recovery diodes),then is outputted DC .The

circuit adopts current feedback control technology to insure current output stably.

Meanwhile, the welding current parameter can be adjusted continuously and steplessly to

meet the requirements of welding craft.

230V

114


1.3 Specifications R221

Summary

Description

Dimensions

Weight

Cooling

Welder Type

European Standards

Number of Phases



Open Circuit Voltage

Output Voltage Range

Wirefeeder Speed Range

Wire roll weight

Wire roll diameter

Protection Class

Insulation Class

Thickness of material

Efficiency

Power Factor

Welding Current Range (MIG Mode)

Welding Current Range (STICK Mode)




Duty cycle, 40°C, 10 min(MIG)

Duty cycle, 40°C, 10 min(MMA)

Gas Follow

R221

490X225X380mm

15.9kg

Fan Cooled

Multi Process Inverter Power Source

EN 60974-1 / IEC60974-1

1

230VAC ± 15%

50/60Hz

66V

10-25 V

2.5-18

5kg

0.6/0.8/1.0

IP23

F

Up to 0.8mm

80%

0.73

25-200 A

30-170 A

22.6 A

35.7 A

12.3KVA

200A@ 40%24V 155A@ 100%20.3V

170A@ 40%26.8V 107A@ 100%24.2V

3s

NOTE


115

116

Summary



R221

◆ 3M MB-15 MIG Gun – 16M2

◆ Contact tip•1.0mm Fitted•0.8mm Fitted

◆ 3M Gas Hose 8*13.5



◆ 3M Power cable

◆ Drive Rolls


1.5 Duty Cycle

The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 40% duty cycle,

200 amperes at 24 volts. This means that it has been designed and built to provide the rated amperage (200A) for 4 minutes, i.e. arc welding time, out of every 10 minute period

(40% of 10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period the

Welding Power Source must idle and be allowed to cool.

Safe

Operating

Region

Stick(MMA)

Welding Current (amps)


1.6 Specifications R231

Summary

Description

Dimensions

Weight

Cooling

Welder Type

European Standards

Number of Phases






Wire roll weight

Wire roll diameter

Protection Class

Insulation Class


Efficiency

Power Factor


Welding Current Range (STICK Mode)

Welding Current Range (TIG Mode)




Duty cycle, 40°C, 10 min(MIG)

Duty cycle, 40°C, 10 min(MMA)

Duty cycle, 40°C, 10 min(TIG)

Gas Follow

R231

490X225X380mm

16.2kg

Fan Cooled

Multi Process Inverter Power Source

EN 60974-1 / IEC60974-1

1

230VAC ± 15%

50/60Hz

66 V

10-25 V

2.5-18

5kg

0.6/0.8/1.0

IP23

F

Up to 0.8mm

80%

0.73

25-200 A

30-170 A

10-200A

22.6A

35.7 A

12.3KVA

200A@ 40%24V 126A@ 100%20.3V

170A@ 40%26.8V 107A@ 100%24.2V

200A@ 40%18V 126A@ 100%15V

3s

NOTE


117

118

Summary



R231


◆ Contact tip•1.0mm Fitted0.8mm Fitted

◆ 4M Wp-26 Tig Torch




◆ 3M Power cable

◆ Drive Rolls:


1.8 Duty Cycle

The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to operate at a 40% duty cycle, 200 amperes at 24 volts. This means that it has been designed and built to provide the rated amperage (200A) for 4 minutes, i.e. arc welding time, out of every 10 minute period (40% of

10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period the Welding

Power Source must idle and be allowed to cool.

Safe

Operating

Region

Stick(MMA)

TIG (GTAW)



1.9 Specifications R251/R311

Summary

Description

Dimensions

Weight

Cooling

Welder Type

European Standards

Number of Phases






Wire roll weight

Wire roll diameter

Protection Class

Insulation Class


Efficiency

Power Factor





Requirement

Duty cycle, 40°C, 10 min.

R251

590x240x450mm

23.6kg

Fan Cooled

Single Function

EN 60974-1 / IEC60974-1

3

400VAC ± 15%

50/60Hz

66 V

13-30 V

1.4-18

5-15kg

0.8/1.0

IP23

F

Up to 0.8mm

85%

0.93

30-250 A

9.3 A

12.1 A

12.6KVA

250A@ 60%26.5V

193A@ 100%23.6V

R311

590x240x450mm

24.8kg

Fan Cooled

Single Function

EN 60974-1 / IEC60974-1

3

400VAC ± 15%

50/60Hz

66 V

13-30 V

1.4-18

5-15kg

0.8/1.0

IP23

F

Up to 0.8mm

85%

0.93

30-300 A

8.7 A

15.9 A

16.5KVA

300A@ 30%29V

232 A@ 60%25.6V

164 A@ 100%22.2V

5s Gas Follow 3s

NOTE

Due to variations that can occur in manufactured products, claimed performance, voltages, ratings, all capacities, measurements, dimensions and weights quoted are approximate only.

Achievable capacities and ratings in use and operation will depend upon correct installation, use, applications, maintenance and service.

119

120

Summary



R251/R311


◆ Contact tip •1.0mm Fitted 0.8mm Fitted



◆ 3M Power cable

◆ Drive Rolls


1.11 Duty Cycle

The rated duty cycle of a Welding Power Source is a statement of the time it may be operated at its rated welding current output without exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the following example is used.

Suppose a Welding Power Source is designed to operate at a 30% duty cycle, 300 amperes at

29 volts. This means that it has been designed and built to provide the rated amperage (300 A) for 3 minutes, i.e. arc welding time, out of every 10 minute period (30% of 10 minutes is 3 minutes).

During the other 7 minutes of the 10 minute period the Welding Power Source must idle and be allowed to cool.

Safe

Operating

Region

MIG(R311)

MIG(R251)


300


2.1 Layout For The Panel R221

4 5 1

12

14

13

7

8

6

9

3

2

11

10

Operation

WARNING













3. JOB and SAVE




The digital meter is used to display the pre-set (preview) amperage in STICK / Mig modes and actual welding amperage of the power source when welding, it is also used to display parameters from selecting function button 6.

121

Operation


5. Digital Voltmeter

The digital meter is used to display the pre-set (preview) Voltage in Mig modes and actual welding Voltage of the power source when welding. This digital meter is used to display the Welding Output Terminal Voltage in STICK modes during non- welding or welding.

6. Selecting function Button

Press and release this button to change the selected weld functions mode from welding current to inductance to Volt to Burnback .


The positive control is used to plus selected function from 6.


The negative control is used to minus selected function from 6.

9. Weld Process Selection Button

Press and release this button to change the selected weld process mode from mig to tig to stick. The weld process will change to the next process in the sequence each time the button is pressed and released. The green indicators next to the button will illuminate to identify mig to tig to stick process mode.

10. 2T - 4T Trigger Latch Button

Press and release the button to change the selected operating mode of the trigger. The selected mode can be either “2T” (unlatched) or “4T” (latched) operation. The green indicator next to the button will illuminate to identify which mode is selected (2T or 4T).

In the 4T mode once the weld has been started you can release the trigger and continue welding until the trigger is activated again or the welding arc is broken to stop the welding arc.

11. 0.6/0.8/1.0/SPL

Press this button to choose the welding materials diameter, SPL is stainless steel.

12. MIG Torch Connecting

The MIG Torch Adapter is the connection point for the MIG Torch. Press the MIG Torch

in and secure by turning the locking ring to the right (clockwise)


The negative welding terminal is used to connect the welding output of the power source

to the appropriate welding accessory such as the earth clamp (for Mig function) or

electrode holder (for Stick function). Negative welding current shows to the power

source via this heavy duty bayonet type terminal. It is essential, however, that the male

plug is inserted and turned securely to achieve a sound electrical connection.

122



to the appropriate welding accessory such as the MIG Gun (via the MIG Gun polarity

lead) or ground clamp (for Stick function). Positive welding current flows from the

power source via this heavy duty bayonet type terminal. It is essential, however, that the

male plug is inserted and turned securely to achieve a sound electrical connection .



44 55 11

77

88

66

99

33

22

Operation

WARNING













3. JOB and SAVE




The digital meter is used to display the pre-set (preview) amperage in STICK / Mig modes and actual welding amperage of the power source when welding, it is also used to display parameters from selecting function button 6.

123

Operation



The digital meter is used to display the pre-set (preview) Voltage in Mig modes and actual welding Voltage of the power source when welding. This digital meter is used to display the Welding Output Terminal Voltage in STICK modes during non- welding or welding.


Press and release this button to change the selected weld functions mode from welding current to inductance to Volt to Burnback .





9. Weld Process Selection Button

Press and release this button to change the selected weld process mode from mig to tig to stick. The weld process will change to the next process in the sequence each time the button is pressed and released. The green indicators next to the button will illuminate to identify mig to tig to stick process mode.


Press and release the button to change the selected operating mode of the trigger. The selected mode can be either “2T” (unlatched) or “4T” (latched) operation. The green indicator next to the button will illuminate to identify which mode is selected (2T or 4T).


11. 0.6/0.8/1.0/SPL

Press this button to choose the welding materials diameter, SPL is stainless steel.


The MIG Torch Adapter is the connection point for the MIG Torch. Press the MIG Torch

in and secure by turning the locking ring to the right (clockwise)


The negative welding terminal is used to connect the welding output of the power source

to the appropriate welding accessory such as the earth clamp (for Mig function) or

electrode holder (for Stick function). Negative welding current shows to the power source via this heavy duty bayonet type terminal. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

124



to the appropriate welding accessory such as the MIG Gun (via the MIG Gun polarity

lead) or ground clamp (for Stick function). Positive welding current flows from the

power source via this heavy duty bayonet type terminal. It is essential, however, that the

male plug is inserted and turned securely to achieve a sound electrical connection .


Operation

15. Remote Control Switch

Remote Control Switch receptacle is used to connect a trigger switch or remote

control to the welding Power Source circuitry:


The socket information is included in the event the supplied cable is not suitable and it

is necessary to wire a plug or cable to interface with the receptacle.



TIG Torch.

2.3 MIG Gun Polarity Lead

The polarity lead is used to connect the MIG Gun to the appropriate positive or negative output terminal (allowing polarity reversal for different welding applications). In general, the polarity lead should be connected in to the positive welding terminal (+) when using steel, stainless steel or aluminum electrode wire. When using gasless wire, the polarity lead is generally connected to the negative welding terminal (-). If in doubt, consult the manufacturer of the electrode wire for the correct polarity. It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

125

Operation



6

10

11

12

4 5

7

9

3

8

1

2

13

WARNING






The indicator shows the machine is in working suitation.










The digital meter is used to display inductance in Mig modes and actual welding amperage of the power source when welding.


The digital meter is used to display the pre-set (preview) Voltage and burn back in Mig

modes and actual welding Voltage of the power source when welding. This digital meter is

used to display the Welding Output Terminal Voltage in STICK modes during non-

welding or welding.

126


Operation


Press and release the button to change the selected operating mode of the trigger. The selected mode can be either “2T” (unlatched) or “4T” (latched) operation. The red indicator next to the button will illuminate to identify which mode is selected (2T or 4T).



Press and release this button to change the selected weld functions mode from welding current to inductance in left display or from Volt to Burnback from the right digital display.





omponents are at Mains voltage potential.

10. Gas checking

Press this button to check the flow of the gas, repress the button will cause the close the flow of gas.

11. Wire checking

Press this button to check the wires coming from the welding rolls


The MIG Torch Adapter is the connection point for the MIG Torch. Press the MIG Torch in and secure by turning the locking ring to the right (clockwise)


The negative welding terminal is used to connect the welding output of the power source to the appropriate welding accessory such as the earth clamp. Negative welding current shows to the power source via this heavy duty bayonet type terminal.

It is essential, however, that the male plug is inserted and turned securely to achieve a sound electrical connection.

CAUTION


2.5 Installing a 5 kg Spool 200mm Diameter (For R221,R231)

In order to install a 5 kg / 200mm diameter spool, assemble the wire into the spool hub and replace the wire spool hub cover.

Installation of wire spool.

1. Remove Wire Spool hub cover.

2. Place Wire Spool onto the hub, put back the hub cover back, turn securely to keep the wire spool stable on the hub.

127

Operation


CAUTION

Use care in handling the spooled wire as it will tend to “unravel” when loosened from the spool.

Grasp the end of the wire firmly and don’t let go of it.

2.6 Installing a 15 kg Spool 300mm Diameter (Suitable For R251 And R311)

In order to t a 15 kg / 300mm diameter spool, assemble the wire into the spool hub and replace

Installation of wire spool.

1. Remove Wire Spool hub cover.

CAUTION

Use care in handling the spooled wire as it will tend to “unravel” when loosened from the spool. Grasp the end of the wire firmly and don’t let go of it.

Locating pin

Welding wire disc shaft


Operation

4. Pass the MIG wire over the drive roll groove, through the outlet guide and out past the

MIG Torch Adaptor. Then fit the MIG Torch to ensure the MIG wire passes into the MIG

Torch liner of the MIG Torch.

5. Close the Pressure Roller Arm.

6. Swing the Spring Pressure Adjusting Knob back into place.

7. Use the Spring Pressure Adjusting Knob to create a “snug” condition. (Clockwise to Tighten

and Counter Clockwise to loosen).

8. Last picture shows the result with wire installed. Continue to the next section for proper

setting of tension.

2.7 Inserting Wire Into The Feed Mechanism

128

WARNING

ELECTRIC SHOCK CAN KILL! Make certain the input power is disconnected from the power source before proceeding. DO NOT reattach the input power until told to do so in these instructions.

1. Loosen the Spring Pressure Adjusting Knob if needed and swing it down (See part 1) .

2. Move the Pressure (top) Roller Arm by swinging it to the right. (See part 2) .

3. Make sure the end of the wire is free of any burrs and is straight. Pass the end of wire

through the Inlet Wire Guide and over the Feed roll. Make certain the proper groove is

being used.(See part 2) .

129

Operation


2.8 Feed Roller Pressure Adjustment

The roller on the swing arm applies pressure to the grooved roller via an adjustable tension devise. The Tension Adjuster should be set to a minimum pressure that will provide satisfactory wire feed without slippage. If slipping occurs, and inspection of the wire out of the MIG Gun reveals no deformation or wear, the conduit liner should be checked for kinks or clogging from metal flakes. If this is not the cause of slipping, the feed roll pressure can be increased by rotating the Tension Adjusting knob clockwise. The use of excessive pressure may cause rapid wear of the feed roller, motor shaft and motor bearings.

NOTE

Genuine contact tips and liners should be used. Many non-genuine liners use inferior materials which can cause wire feed problems.

2.9 Changing The Feed Roll

NOTE

Feed rolls often come with a rust prohibitive coating that needs to be cleaned off before installation.

A Feed roll consists of four different sized grooves. As delivered from the factory the drive roll is installed for 0.6 / 0.8 mm .

The stamped marking on the feed roll refers to the groove furthest from the stamped marking.

When mounted, that will be the groove closest to the motor and the one to thread.

To ensure proper wire feed, the groove closest to the motor must match the electrode wire size being used.

The size that is visible when fitting the feedroll is the groove size in use.

NOTE

130

All grooved feed rolls have their wire size or range stamped on the side of the roll. On rolls with different size grooves, the outer (visible when installed) stamped wire size indicates the groove in use.

Refer to feed roll kit in the Appendix for the proper selection and ordering of feed roll kits.

Kit includes drive rolls, an input wire guide and an output wire guide for a specific wire type and size.

Feed rolls are removed by twisting the feed roll retainer cap and aligning the retaining knob splines/tabs with the drive gear splines. Feed rolls are installed by putting the feed roll onto the drive gear splines and twisting the feed roll retainer cap so that the splines/tabs rest against the face of the feed roll where they will click into place.


Operation

WARNING

The welding wire is electrically Hot if it is fed by depressing MIG Gun switch. Electrode contact to work piece will cause an arc with MIG Gun switch depressed.

2.10 Shielding Gas Regulator Operating Instructions

WARNING

This equipment is designed for use with welding grade (Inert) shielding gases only.

NOTE

Shielding Gas is not required if the unit is used with self shielded FCAW (flux cored arc welding) wires

Shielding Gas Regulator Safety

Gas regulators are designed to reduce and control high pressure gas from a cylinder or pipeline to the working pressure required for the equipment using it. If the equipment is improperly used, hazardous conditions are created that may cause accidents. It is the users responsibility to prevent such conditions. Before handing or using the equipment, understand and comply at all times with the safe practices prescribed in the manufacturer's instructions.

SPECIFIC PROCEDURES for the use of regulators are listed below.

1. NEVER subject the regulator to inlet pressure greater than its rated inlet pressure.

2. NEVER pressurize a regulator that has loose or damaged parts or is in a questionable

condition. NEVER loosen a connection or attempt to remove any part of a regulator until

the gas pressure has been relieved. Under pressure, gas can dangerously propel a loose part.

3. Do NOT remove the regulator from a cylinder without first closing the cylinder valve and

releasing gas in the regulator high and low pressure chambers.

4. Do NOT use the regulator as a control valve. When downstream equipment is not in use

for extended periods of time, shut OFF the gas at the cylinder valve and release the gas

from the equipment.

5. OPEN the cylinder valve SLOWLY. Close after use.

User Responsibilities

This equipment will perform safely and reliable only when installed, operated and maintained, and repaired in accordance with the instructions provided. Equipment must be checked periodically and repaired, replaced, or reset as necessary for continued safe and reliable performance. Defective equipment should not be used. Parts that are broken, missing, obviously worn, distorted, or contaminated should be replaced immediately.

The user of this equipment will generally have the sole responsibility for any malfunction, which results from improper use, faulty maintenance, or by repair by anyone other than an accredited repairer.

131

Operation


CAUTION

Match regulator to cylinder. NEVER CONNECT a regulator designed for a particular gas or gases to a cylinder containing any other gas.


Operation

5. To protect sensitive down-stream equipment a separate safety device may be necessary

if the regulator is not fitted with a pressure relief device.

Operation

With the regulator connected to cylinder or pipeline, and the adjustment screw/knob fully disengaged, pressurize as follows:

1. Stand to one side of regulator and slowly open the cylinder valve. If opened quickly, a

sudden pressure surge may damage internal regulator parts.

2. With valves on downstream equipment closed, adjust regulator to approximate working

pressure. It is recommended that testing for leaks at the regulator connection points be

carried out using a suitable leak detection solution or soapy water.

3. Purge air or other unwanted welding grade shielding gas from equipment connected to

the regulator by individually opening then closing the equipment control valves. Complete

purging may take up to ten seconds or more, depending upon the length and size of the

hose being purged.

Adjusting Flow Rate

NOTE

The regulator/ ow meters used with argon based and carbon dioxide shielding gases are different. A suit able regulator/ ow meter will need to be fitted.

NOTE

All valves downstream of the regulator must be opened to obtain a true ow rate reading on the outlet gauge. (Welding power source must be triggered) Close the valves after the pressure has been set.

Installation

1. Remove cylinder valve plastic dust seal. Clean the cylinder valve outlet of impurities that

may clog orifices and damage seats before connecting the regulator. Crack the valve

(open then close) momentarily, pointing the outlet away from people and sources of ignition.

Wipe with a clean lint free cloth.

2. Match regulator to cylinder. Before connecting, check that the regulator label and cylinder

marking agree and that the regulator inlet and cylinder outlet match. NEVER CONNECT

a regulator designed for a particular gas or gases to a cylinder containing any other gas.

3. Connect the regulator inlet connection to cylinder or pipeline and Tighten it firmly but

not excessively, with a suitable spanner.

4. Attach supplied gas line between the regulator output and the desired input at the rear

of the power source. power supply

Ensure that the gas cylinder is secured to a building pillar, wall bracket or otherwise securely fixed in an upright position.

Screw knob

With the regulator ready for operation, adjust working ow rate as follows:

1. Slowly turn adjusting screw/knob in (clockwise) direction until the outlet gauge indicates

the required ow rate.

NOTE

It may be necessary to re-check the shielding gas regulator ow rate following the first weld sequence due to back pressure present within shielding gas hose assembly.

2. To reduce ow rate, allow the welding grade shielding gas to discharge from regulator by

opening the downstream valve. Bleed welding grade shielding gas into a well ventilated

area and away from any ignition source. Turn adjusting screw counterclockwise, until the

required ow rate is indicated on the gauge. Close downstream valve.

3. Adjust regulator pressure adjusting screw to the required ow rate, indicated on gauge dial.

The gas ow rate should be adequate to cover the weld zone to stop weld porosity. Excessive

gas ow rates may cause turbulence and weld porosity.

Operation


Shutdown

Close cylinder valve whenever the regulator is not in use. To shut down for extended periods

(more than 30 minutes).

1. Close cylinder or upstream valve tightly.

2. Open downstream equipment valves to drain the lines. Bleed gas into a well ventilated

area and away from any ignition source.

3. After gas is drained completely, disengage adjusting screw and close downstream

equipment valves.

4. Before transporting cylinders that are not secured on a cart designed for such purposes,

remove regulators.

2.11 Set-up MIG (GMAW) Welding With Gas Shielded MIG Wire

When using a non shielded wire, you need to have an external gas source attached to the unit. For most Non Shielded Wire, connect the Work Lead to the negative - terminal and connect the MIG Gun polarity lead to the positive + terminal. If in doubt, consult the MIG electrode wire manufacturer.

MIG torch power supply

(Ar./GAS(TIG/WIG))

Ensure that the gas cylinder is secured to a building pillar, wall bracket or otherwise securely fixed in an upright position.


Operation

6. Fit the welding grade shielding gas regulator/ ow gauge to the shielding gas cylinder then

connect the shielding gas hose from the rear of machine to the regulator/ow gauge

outlet.

7. Turn the Main ON/OFF switch ON (located on the rear panel).

8. Select MIG mode with the process selection control.

9. Remove the MIG Gun nozzle and contact tip.

10. Depress MIG Gun trigger to feed the MIG wire out through the MIG Gun gas diffuser then

fit the contact tip on the MIG wire and securely fasten it to the MIG Gun then fit the

nozzle in place.

11. Refer to the Weld Guide located on the inside of the wire feed compartment door for further

information on Voltage/Wirespeed settings.

WARNING

Before connecting the work clamp to the work make sure the mains power supply is switched

OFF.

Secure the welding grade shielding gas cylinder in an upright position by chaining it to a suitable stationary support to prevent falling or tipping.

CAUTION

Loose welding terminal connections can cause overheating and result in the male plug being

fused in the terminal.

Remove any packaging material prior to use. DO NOT block the air vents at the front or rear of the Welding Power Source.

NOTE

Depending on the type of wire you will be using the MIG Gun polarity may need to be switched.

Follow the wire manufacturers recommendation.

2.12 Set-up for MIG (FCAW) Welding with Gasless MIG Wire

When using a gasless flux cored wire, you do not need to have an external gas source attached to the unit. For most Self Shielded Flux Cored Wire, connect the Work Lead to the positive

+ terminal and connect the MIG Torch polarity lead to MIG torch connector. If in doubt, consult the Flux Cored electrode wire manufacturer. power supply

MIG torch

134

1. Turn the Main ON/OFF switch OFF (located on the rear panel).

2. Check that the MIG wire size, contact tip, MIG Gun liner and drive roll groove are all the

same size before fitting the MIG wire into the Power Source.

3. Connect the MIG Gun Polarity Lead to the positive welding terminal (+). If in doubt, consult

the MIG electrode wire manufacturer. Welding current flows from the Power Source via

heavy duty bayonet type terminals. It is essential, however, that the male plug is inserted


4. Fit the MIG wire spool and MIG Gun to the machine.

5. Connect the work lead to the negative welding terminal (-). If in doubt, consult the MIG

electrode wire manufacturer. Welding current flows from the Power Source via heavy

duty bayonet type terminals. It is essential, however, that the male plug is inserted and

turned securely to achieve a sound electrical connection.

135

136

Operation


1. Turn the Main ON/OFF switch OFF (located on the rear panel).

2. Check that the MIG wire size, contact tip, MIG Gun liner and drive roll groove are all the

same size before tting the MIG wire into the Power Source.

3. Connect the MIG Gun Polarity Lead to mig torch connector. If in doubt, consult the MIG

electrode wire manufacturer. Welding current ows from the Power Source via heavy

duty bayonet type terminals. It is essential, however, that the male plug is inserted and

turned securely to achieve a sound electrical connection.

4. Fit the MIG (FCAW) wire spool and MIG Gun to the machine.

5. Connect the work lead to the positive welding terminal (+). If in doubt, consult the MIG

electrode wire manufacturer. Welding current ows from the Power Source via heavy duty

bayonet type terminals. It is essential, however, that the male plug is inserted and turned

securely to achieve a sound electrical connection.

6. If gasless MIG (FCAW) wire is fitted then shielding gas is not required for welding.

Otherwise fit the welding grade shielding gas regulator / ow gauge to the shielding gas cylinder then connect the shielding gas hose from the rear of the machine to the

regulator/ow gauge outlet.

7. Turn the Main ON/OFF switch ON (located on the rear panel).

8. Select MIG mode with the process selection control.

9. Remove the MIG Gun nozzle and contact tip.

10. Depress MIG Gun trigger to feed the MIG wire out through the MIG Gun gas diffuser then

fit the contact tip on the MIG wire and securely fasten it to the MIG Gun then fit the

nozzle in place.

11. Refer to the Weld Guide located on the inside of the wire feed compartment door for

further information on Voltage/Wirespeed settings.

WARNING

Before connecting the work clamp to the work make sure the mains power supply isswitched OFF.

CAUTION


Remove any packaging material prior to use. DO NOT block the air vents at the front or rear

of the Welding Power Source.

NOTE

Depending on the type of wire you will be using the MIG Gun polarity may need to be switched.

Follow the wire manufacturers recommendation.


Operation

2.13 Set-up For LIFT TIG (GTAW) Welding (only for R231)

WARNING

Before any welding is to begin, be sure to wear all appropriate and recommended safety equipment

NOTE

The following steps will assume that you have already set up the proper shielding gas.

NOTE

The following set up is known as Straight Polarity or DC Electrode Positive. This is commonly used for DC LIFT TIG welding on most materials such as steel and stainless steel.


2.Connect the work earth clamp to the positive output terminal, and the LIFT TIG Torch

cable to the negative output terminal. Refer to Figure 5-02.

3.Connect the gas line/hose to the proper shielding gas source. and connect the aviation

plug for trigger switch to 5 pin control socket Refer to Figure 5-02.

4.Slowly open the Argon Cylinder Valve to the fully open position.

5.Connect the work earth clamp to your work piece.

6.The tungsten must be ground to a blunt point (similar to a pencil) in order to achieve

optimum welding results. (Refer to Figure: 5-01). It is critical to grind the tungsten

electrode in the direction the grinding wheel is turning. Grind at a 30 degree angle and

never to a sharp point.

2 to 2-1/2 Times Electrode Diameter

Electrode

7. Install the tungsten with approximately 1.0mm to 3.2mm sticking out from the gas cup,

ensuring you have correct sized collet.






TIG torch

(Ar./GAS(TIG/WIG)

137

138

Operation


2.14 Set-up For STICK Metal Arc Welding (MMA)

WARNING

Before any welding is to begin, be sure to wear all appropriate and recommended safety equipment.

NOTE

The following set up is known as DC Electrode Positive or reverse polarity. Please consult

with the STICK electrode manufacturer for specific polarity recommendations.


2. Attach the STICK and Work Leads,connection as picture.

power supply

Electrode holdder

3. Set the welding process to STICK.


5. Install a STICK electrode in the electrode holder.

6. You are now ready to begin STICK Welding.

NOTE

To weld, gently strike the electrode on the work piece to generate a welding arc, and slowly move along the work piece while holding a consistent arc length above base metal.



Troubleshooting

WARNING

There are extremely dangerous voltage and power levels present inside this product. Do not attempt to open or repair unless you are a qualified electrical tradesperson and you have hard training in power measurements and troubleshooting techniques.

If major complex subassemblies are faulty, then the Welding Power Source must be returned to an accredited reseller for repair. The basic level of troubleshooting is that which can be performed without special equipment or knowledge.

Nr.

1

2



Fan is broken







3

4









Solution

Change fan

Clean it

Change capacitor


Change it

Change it

Connect correctly

Repair or change it

Change it


in Nr. 2

Change it

Change it

Replace it

5





Change it

6


(MMA)




Check and repair


139

Troubleshooting


140

Nr. Troubles

7

8

9

Turn on the power source ,power indicator is lit, gas flows, wire roller cannot feed

Turn on the power source ,power indicator is lit ,gas flows, wire feeding, no arc igniting

Reasons Solution

The wire roller is wrong installed Check and change it

The wire roller is twined

Pressure roller arm is fitted firmly

Check and sort it out

Check and connect correctly

The wire is not correctly through the inlet wire guide

Check and install correctly

The size of the groove ,wire and torch tip are not from the same size

Change to the same size of the needed parts



Check the welding circuit is correct Correct properly

The mig torch is not correctly fitted to machine

Check and connect correctly






Air tube is brocken


Remove it

Change it

Change it

10

11

12

Gas always flows

Without triggering the mig torch but the wire roller feeding wire automatically



If the gas checking function is selected



Check gas

Close it

Remove it

Change it

Checking if the wire checking indicator is on

Wire feeding board(for R251 and

R311) is broken or the control board

( for R221 and R231) is broken

Close the wire checking function





Repair or change it


13

14 current displayed isn't accordant

The penetration of molten pool is not enough











WELDING TECHNIQUE AND MAINTENANCE

Troubleshooting

Nr. Troubles

15

16

17

Thermal overload


Reasons



much time



Fan is broken

Tig electrode melts when welding (for

R231)


Arc flutters during

Tig welding



Solution





Change the fan




141

142

Basic knowledge


CHAPTER 7



TIG Welding

1.1 TIG Basic Welding Technique

Gas Tungsten Arc Welding (GTAW) or TIG (Tungsten Inert Gas) as it is commonly referred to, is a welding process in which fusion is produced by an electric arc that is established between a single tungsten (non- consumable) electrode and the work piece. Shielding is obtained from a welding grade shielding gas or welding grade shielding gas mixture which is generally Argon based. A filler metal may also be added manually in some circumstances depending on the welding application.

Work Piece can Be Any Commercial

Metal

Gas Cup

Either Ceramic,

High-lmpact or

Water Cooled

Metal

Tungsten Electrode

Non-Consumable

Welds Made With or

Without Addition of Filler Metal

Inert Gas

Shields Electrode and Weld Puddle

TIG Welding Application Shot

1.2 Joint froms in TIG a butt joint c coner joint

1.3 The explanation of welding quality

The relation of welding area color & protect effect of stainless steel

Welding area color argent,golden

Protect effect best blue better red-grey good grey bad black worst

143

TIG Welding


The relation of welding area color & protect effect of Ti-alloy

Protect effect best better good bad worst

04 1.4 TIG Parameters Matching

The corresponding relationship between gas nozzle diameter and electrode diameter

Gas nozzle diameter/mm

6.4

8

9.5

11.1

Electrode diameter/mm

0.5

1.0

1.6 or 2.4

3.2

Notice: the above parameters originate from <<Welding Dictionary>> P142,Volume 1 of Edition 2.

Gas nozzle and the shield gas flow rate

Welding current range/A

DC positive connection


Gas flow rate/L•min1


AC

Gas flow rate/L•min-

10~100

101~150

151~200

201~300

4~9.5

4~9.5

6~13

8~13

4~5

4~7

6~8

8~9

8~9.5

9.5~11

11~13

13~16

6~8

7~10

7~10

8~15


1

Tungsten Electrode

Sharpened of the Electrode

Diameter/mm

0.125

0.25

0.5

0.8

0.8

1.1

1.1

1.5

Angle of Cone(º)

12

20

25

30

35

45

60

90

Background

Current/a

2~15

5~30

8~50

10~70

12~90

15~150

20~200

20~300

144

Tungsten

Electrode

Diameter/mm

2.4

2.4

3.2

4.0

1.0

1.0

1.6

1.6


TIG Welding

TIG of stainless steel(single run welding)

2.4

2.4

3.2

3.2

4.8

4.8

6.0

0.8

1.0

1.5

1.5

Joint form

Butt joint

Butt joint

Butt joint

Corner joint

Butt joint

Corner joint

Butt joint

Corner joint

Butt joint

Corner joint

Butt joint

1.0

1.6

1.6

1.6

1.6

1.6

1.6

1.6

2.4

3.2

4.0

2.4

2.4

2.4

2.4

1.6

1.6

1.6

1.6

3.2

3.2

4.0

Argon gas flow rate/

L•min1

5

5

7

7

7

7

7

7

8

9

10-12

20~50

50~80

65~105

75~125

85~125

95~135

100~135

115~145

150~225

175~250

220~300

Welding cm•min-1

30

25

30

25

66

56

30

25

25

20

25


Parameters of piping back sealing welding for mild steel(DCEP)

Piping diameter

Φ/mm

38

42

60

76

108

133

159

219

273

325

Tungsten electrode

diameter/mm

2.0

2.0

2.0

2.5

2.5

2.5

2.5

2.5

2.5

2.5

Gas nozzle

diameter/mm

8

8

8

8~10

8~10

8~10

8~10

8~10

8~10

8~10

Welding wire diameter/mm

Welding current/A

2

2

2

2.5

2.5

2.5

2.5.

2.5

2.5

2.5

Welding current/A

75~90

75~95

75~100

80~105

90~110

90~115

95~120

100~ 120

110~ 125

120~ 140

Arc voltage/V

11~13

11~13

11~13

14~16

14~16

14~16

14~16

14~16

14~16

14~16

Argon flow rate/L•min1

Welding rate/cm•min1

6~8

6~8

7~9

8~10

9~11

10~12

11~13

12~14

12~14

12~14

Notice: the above parameters originate from <<Welding Dictionary>> P167,

Volume 1 of Edition 2.

4~5

4~5

4~5

4~5

5~6

5~6

5~6

5~6

5~6

5~6

145

146

TIG Welding


Parameters of AC TIG(MMA) for Aluinum and its alloy

Steet thickness

/mm

Tungsten eletrode diameter

/mm

Pre-heat

Temper

-ature/ºC

2

Welding current/A

45~60

Argon flow rate/L•min1

Gas nozzle diameter

/mm

1

1.5

8

10

5

6

2

3

4

12

14

16

1.6

1.6~2.0

2~2.5

2~3

3

3~4

4

4~5

4~5

4~5

5~6

5~6

2

2~3

3

4

4

5

5

5

5~6

5~6

6

100

100~150

150~200

180~200

200~220

50~80

90~120

150~180

180~200

180~240

240~280

260~320

280~340

300~360

340~380

340~380

7~9

7~9

8~12

8~12

10~15

10~15

16~20

16~20

16~20

18~22

20~24

20~24

8

8

8~12

8~12

8~12

10~12

14~16

14~16

14~16

16~20

16~20

16~20

18

20

5~6

5~6

6

6

200~240

200~260

360~400

360~400

25~30

25~30

16~20

20~22

16~20 5~6 6 200~260 300~380 25~30 16~20

22~25 5~6 6~7 200~260 360~400 30~35 20~22

Notice: the above parameters originate from 《 Welding Dictionary 》 P538,

Volume 2 of Edition 2.

Remark

Flange welding

Butt welding

V-groove butt welding

X-groove butt welding

1.5 E-Series Equipment TIG Parameters Matching

Tungsten Electrode Current Ranges Guide for Selecting Filler Wire Diameter


Tungsten Electrode Types

TIG Welding

TIG Welding Filler Rods

TIG Welding is generally regarded as a specialized process that requires operator competency. While many of the principles outlined in the previous Arc Welding section are applicable a comprehensive outline of the TIG Welding process is outside the scope of this

Operating Manual.

147

MMA Welding


2.1 MMA Basic Welding Technique

Arc Welding Practice

The techniques used for arc welding are almost identical regardless of what types of metals are being joined. Naturally enough, different types of electrodes would be used for different metals as described in the preceding section.

Welding Position

The electrodes dealt with in this publication can be used in most positions, i.e. they are suitable for welding in flat, horizontal, vertical and overhead positions. Numerous applications call for welds to be made in positions intermediate between these. Some of the common types of welds are shown

Flat Position

,

Down Hand Butt Weld

Flat Position

Gravity Fillet

,

Weld

Horizontal Position

Butt Weld

, Horizontal

( HV )

Vertical

Position

148

Vertical Position ,

Butt Weld

Vertical Position ,

Fillet Weld

Vertical Position

,

Fillet Weld

Overhead Position

Fillet Weld

,

Joint Preparations

In many cases, it will be possible to weld steel sections without any special preparation.

For heavier sections and for repair work on castings, etc., it will be necessary to cut or grind an angle between the pieces being joined to ensure proper penetration of the weld metal and to produce sound joints.

In general, surfaces being welded should be clean and free of rust, scale, dirt, grease, etc.

Slag should be removed from oxy-cut surfaces.

Arc Welding Technique - A Word to Beginners

For those who have not yet done any welding, the simplest way to commence is to run beads on a piece of scrap plate. Use mild steel plate about 6.4mm (1/4") thick and a 3.2mm (1/8") electrode. Clean any paint, loose scale or grease off the plate and set it firmly on the work bench so that welding can be carried out in the downhand position. Make sure that the work clamp is making good electrical contact with the work, either directly or through the work table. For light gauge material, always clamp the work lead directly to the job, otherwise a poor circuit will probably result.


MMA Welding

The Welder

Place yourself in a comfortable position before beginning to weld. Get a seat of suitable height and do as much work as possible sitting down. Don't hold your body tense. A taut attitude of mind and a tensed body will soon make you feel tired. Relax and you will find that the job becomes much easier. You can add much to your peace of mind by wearing a leather apron and gauntlets. You won't be worrying then about being burnt or sparks setting alight to your clothes.

Place the work so that the direction of welding is across, rather than to or from your body.

The electrode holder lead should be clear of any obstruction so that you can move your

arm freely along as the electrode burns down. If the lead is slung over your shoulder, it allows greater freedom of movement and takes a lot of weight off your hand. Be sure the insulation on your cable and electrode holder is not faulty, otherwise you are risking an electric shock.

149

150

MIG Welding


3.1 MIG (GMAW/FCAW) Basic Welding Technique

Two different welding processes are covered in this section (GMAW and FCAW), with the intention of providing the very basic concepts in using the MIG mode of welding, where a

MIG Gun is hand held, and the electrode (welding wire) is fed into a weld puddle, and the arc is shielded by an inert welding grade shielding gas or inert welding grade shielding gas mixture.

GAS METAL ARC WELDING (GMAW): This process, also known as MIG welding, Co welding,

Micro Wire Welding, short arc welding, dip transfer welding, wire welding etc., is an electric arc welding process which fuses together the parts to be welded by heating them with an arc between a solid continuous, consumable electrode and the work.

Shielding is obtained from an externally supplied welding grade shielding gas or welding grade shielding gas mixture. The process is normally applied semi automatically; however the process may be operated automatically and can be machine operated. The process can be used to weld thin and fairly thick steels, and some non-ferrous metals in all positions.


MIG Welding

The MIG Gun should be held at an angle to the weld joint. (See Secondary Adjustment

Variables below)

Hold the MIG Gun so that the welding seam is viewed at all times. Always wear the welding helmet with proper filter lenses and use the proper safety equipment.

WARNING

Do NOT pull the MIG Gun back when the arc is established. This will create excessive wire extension (stick-out) and make a very poor weld.

The electrode wire is not energized until the MIG Gun trigger switch is depressed. The wire may therefore be placed on the seam or joint prior to lowering the helmet.

FLUX CORED ARC WELDING (FCAW): This is an electric arc welding process which fuses together the parts to be welded by heating them with an arc between a continuous flux filled electrode wire and the work. Shielding is obtained through decomposition of the flux within the tubular wire. Additional shielding may or may not be obtained from an externally supplied gas or gas mixture. The process is normally applied semi automatically; however the process may be applied automatically or by machine. It is commonly used to weld large diameter electrodes in the flat and horizontal position and small electrode diameters in all positions.

The process is used to a lesser degree for welding stainless steel and for overlay work.

Position of MIG Gun

The angle of MIG Gun to the weld has an effect on the width of the weld.

Distance from the MIG Gun Nozzle to the Work Piece

The electrode wire stick out from the MIG Gun nozzle should be between 10 - 20 mm (3/8" - 3/4").

This distance may vary depending on the type of joint that is being welded.

Travel Speed

The speed at which the molten pool travels influences the width of the weld and penetration of the welding run.

Establishing the Arc and Making Weld Beads

Before attempting to weld on a finished piece of work, it is recommended that practice welds be made on a sample metal of the same material as that of the finished piece.

The easiest welding procedure for the beginner to experiment with MIG welding is the flat position. The equipment is capable of flat, vertical and overhead positions.

For practicing MIG welding, secure some pieces of 1.6 mm or 5.0 mm (1/16" or 3/16") mild steel plate 150 mm x 150 mm (6" x 6"). Use 0.9 mm (.035") flux cored gasless wire or a solid wire with shielding gas.

Distance from the MIG Gun Nozzle to the Work Piece

The electrode wire stick out from the MIG Gun nozzle should be between 10 - 20 mm (3/8" - 3/4").

This distance may vary depending on the type of joint that is being welded.

Travel Speed

The speed at which the molten pool travels influences the width of the weld and penetration of the welding run.

151

152

MIG Welding


Establishing the Arc and Making Weld Beads

Before attempting to weld on a finished piece of work, it is recommended that practice welds be made on a sample metal of the same material as that of the finished piece.

The easiest welding procedure for the beginner to experiment with MIG welding is the flat position. The equipment is capable of flat, vertical and overhead positions.

For practicing MIG welding, secure some pieces of 1.6 mm or 5.0 mm (1/16" or 3/16") mild steel plate 150 mm x 150 mm (6" x 6"). Use 0.9 mm (.035") flux cored gasless wire or a solid wire with shielding gas.

Setting of the Power Source

Power source and Wirefeeder setting requires some practice by the operator, as the welding plant has two control settings that have to balance. These are the Wirespeed control (refer to section 3.06.4) and the welding Voltage Control (refer to section 3.06.10). The welding current is determined by the Wirespeed control, the current will increase with increased

Wirespeed, resulting in a shorter arc. Less wire speed will reduce the current and lengthen the arc. Increasing the welding voltage hardly alters the current level, but lengthens the arc.

By decreasing the voltage, a shorter arc is obtained with a little change in current level.

When changing to a different electrode wire diameter, different control settings are required.

A thinner electrode wire needs more Wirespeed to achieve the same current level.

A satisfactory weld cannot be obtained if the Wirespeed and Voltage settings are not adjusted to suit the electrode wire diameter and the dimensions of the work piece.

If the Wirespeed is too high for the welding voltage, “stubbing” will occur as the wire dips into the molten pool and does not melt. Welding in these conditions normally produces a poor weld due to lack of fusion. If, however, the welding voltage is too high, large drops will form on the end of the wire, causing spatter. The correct setting of voltage and Wirespeed can be seen in the shape of the weld deposit and heard by a smooth regular arc sound. Refer to the Weld Guide located on the inside of the wirefeed compartment door for setup information.

Electrode Wire Size Selection

The choice of Electrode wire size and shielding gas used depends on the following:

Thickness of the metal to be welded

Type of joint

Capacity of the wire feed unit and Power Source

The amount of penetration required

The deposition rate required

The bead profile desired

The position of welding

Cost of the wire


Maintenance

4.1 Maintenance

In order to guarantee that arc welding machine works high-efficiently and in safety,it must be maintained regularly.Let customers understand the maintenance methods and means of arc welding machine more, enable customers to carry on simple examination and safeguarding by oneself,try one’s best to reduce the fault rate and repair times of arc welding machine, so as to lengthen service life of arc welding machine.Maintenance items in detail are in the following table.

◆ Warning:For safety while maintaining the machine,please shut off the

supply power and wait for 5minutes,until capacity voltage already drop

to safe voltage 36V!

Date Maintenance item the knob has not been put correctly in place, please correct, If you can’t correct or fix the knob, please replace immediately

If the switch is not flexible or it can’t be put correctly in place, please department if there are no accessories machine has shaking, whistle calling or peculiar smell. If there is one of the above problems, find out the reason to get rid of, if you can’t company

Observe that whether the display value of LED is intact. If the display number is not intact, please replace the damaged LED. If it still doesn’t work, please maintain or replace the display PCB

Daily examination

Check up that Whether fan is damaged and is normal to rotate or control

. If the fan is damaged,please change immediately.If the fan does not there is something blocked in the blade,if it is blocked,please get rid of;

If the fan does not rotate after getting rid of the above problems, you can poke the blade by the rotation direction of fan.If the fan rotates normally, the start capacity should be replaced; If not, change the fan

Monthly examination yearly examination to ensure it works well

Whether the actual current accords with the displaying value.If they be measured by the adjusted plier-type ampere meter

Measure the insulating impedance among the main circuit,PCB and

153

Vector Welding E161, E401 Operating Instructions Manual

OPERATING INSTRUCTIONS

Welding Machine

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Safety instruction

Chapter 1: AC/DC Series Equipment

Chapter 2: Stick Series Equipment

Chapter 3: Cutting Series Equipment

Chapter 4: DC Pulse Series Equipment

Chapter 5: Multifunction Series Equipment

Chapter 6: MIG Series Equipment

Chapter 7: Welding Technique And

Maintenance

CHAPTER 1

AC/DC SERIES EQUIPMENT

CHAPTER 2

STICK SERIES EQUIPMENT

NOTE

NOTE

CHAPTER 3

CUTTING SERIES EQUIPMENT

NOTE

NOTE

NOTE

CHAPTER 4

DC PULSE SERIES EQUIPMENT

NOTE

CHAPTER 5

MULTIFUNCTION SERIES EQUIPMENT

NOTE

CHAPTER 6

MIG SERIES EQUIPMENT

CHAPTER 7

WELDING TECHNIQUE AND MAINTENANCE

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