Riland ARC 400IT Welding Machine User Manual

Riland ARC 400IT Welding Machine

Preface

This manual includes hardware description and operation introduction of the equipment. For your and other people’s safety, please read the manual carefully.

Pay attention

Pay attention to the words after the signs below.

cause major accident, damage or even death, if it is not followed.
 | The words after this sign means there is some potential danger, which may cause hurt or property lose, if it is not followed.
 | The words after this sign means there is potential risk, which may cause equipment fault or break, if it is not followed.

Version
Version YF-TAE-0097, A0, was Released on 19th, July 2017.
The contents of this manual are updated irregularly for updating of product. The manual is only used as an operation guide, except for other promises. No warranties of any kind, either express or implied are made in relation to the description, information or suggestion or any other contents of the manual.
The images shown here are indicative only. If there is an inconsistency between the image and the actual product, the actual product shall govern.

SAFETY WARNING

The safety notes listed in this manual is to ensure the correct use of the machine and to keep you and other people from being hurt. The design and manufacture of welding machines consider safety. Please refer to the safety warning listed in the manual to avoid accidents. Different damage would be caused by the wrong operation of the equipment as follows. Please read the user manual carefully to reduce such damage.

Please follow the rules below to avoid heavy accidents.

• Never use the equipment to do other things but welding.
• Follow related regulations for the construction of the input-driven power source, choice of place, usage of high-pressure gas, storage, configuration, safe-keeping of workpiece after welding, and disposal of waste, etc.
• People using heart pacemaker is not allowed to get close to the welding machine or area without a doctor’s permission. The magnetism created by energizing the welding machine can have a bad effect to the pacemaker.
• Install, operate, check and maintain the equipment by professional personnel.
• Understanding the contents of the user manual for safety.
• Please follow the rules below to avoid electric shock。
• Keep away from any electric parts.
• Earth the machine and workpiece by professional personnel.
• Cut off the power before installation or checking, and restart 5 minutes later. The capacitance is a chargeable device. Please ensure it has no voltage before starting again even if the power source is cut off.
• Do not use wire with an inadequate section surface or damaged insulation sleeve or even an exposed conductor.
• Do ensure well isolation of wire connection.
• Never use the device when the enclosure is removed.
• Never use broken or wet insulation gloves.
• Use friends when working at high position.
• Check and maintain regularly, don’t use it until the broken parts are fixed well.
• Turn off the power when not in use.
• Follow the national or local related standards and regulations when using the AC welding machine at a narrow or high position.
• Please follow the below notes to avoid fire and explosion, etc.
• No combustible in the welding area.
• Keep off combustible when welding.
• Keep hot workpieces after welding away from flammable gas.
• Do move away the combustible around when welding the dooryard, ground, and wall,. The wire connection of the base metal should be as close to the welding place as
• possible. Never weld those facilities with gas pipes or airtight slots.
• Put fire extinguisher around the welding area to prevent fire.
• The gas and fumes are harmful to health, please wear protective devices according to regulations.
• Wear exhaust equipment and breathe preventive facilities to prevent gas poisoning or choking.
• Use suggested part exhaust equipment and breathe preventive facilities to prevent hurt or poisoning by gas and other powder, please.
• To prevent oxygen deficiency, air out the gas-filled room which is full of CO2 and argon on the bottom, When operating on trunks, boilers, cabins, etc.
• Please accept the supervisor’s inspection when operating in a narrow space. Air the room and wear breathe preventive facilities.
• Never operate in degrease, washing or spray space.
• Using breathe preventive facilities when welding shielded steel for it will cause poisonous dust and gas.
• The arc, spark, residue and noise are harmful to health, please wear a protective appliance.
• Eye protection against arc is recommended when welding or supervising welding.
• Please wear preventive spectacles.
• Welder’s gloves, welder’s goggles, long sleeve clothes, leather apron, and other standard protection types of equipment must be worn for the welding operation.
• A screen to protect other people against the arc must be set in the welding place.

Please follow the notes below to avoid the gas cylinder toppling over or breaking.

• Use the gas cylinder correctly.
• Use the equipped or recommended gaseous regulator.
• Read the manual of the gaseous regulator carefully before using it, and pay attention to the safety notes.
• Fix the gas cylinder with the appropriate holder and other relative parts.
• Never put the cylinder under high temperatures or sunshine environment.
• Keep your face away from the gas cylinder exit when opening it.
• Put on the gas shield when it is not used.
• Never put the torch on the gas cylinder. The electrode can not meet the gas cylinder.
• Never use the machine when the enclosure is off.
• Install, operate, check and maintain the machine by a professional person. Keep your fingers, hair, clothes etc. away from the switch parts such as the fan

For better work efficiency and power source maintenance, please note the following.

• Precautions against toppling over.
• Never use the welding equipment for pipe thawing.
• Lift the power source from side when use the up-down forklift truck to avoid toppling over.
• When using the crane for lift, tie the rope to the ears with an angle no more than φ15 to the vertical direction.
• When lifting the welding machine which is equipped with gas cylinder and wire feeder, download them from the power source and ensure the horizontal of the machine.
• Do fix the gas cylinder with belt or chain when moving it to avoid body hurt.
• Ensure fastness and insulation when lifting the wire feeder through the swing ring for welding.

Electromagnetic interference needs attention

• It may need extra preventive measures when the equipment is used in a particular location.
• Before the installation, please estimate the potential electromagnetism problems of the environment as follows.
•  Upper and lower parts of the welding equipment and another nearby power cable, control cable, signal cable, and phone cables.
•  Wireless electricity as well as TV radiation and reception equipment.
• Computer and other control equipment.
•  Safety-recognition equipment etc. Such as supervising industrial equipment.
• The health of people around. Such as personnel using the heart pacemaker or audiphone.
• Equipment for adjustment and measurement.
• The anti-disturb capability of other used equipment. Users should ensure this equipment and the environment are compatible, which may need extra preventive measures.
• practical state of the welding and other activities.
• Users should observe the following dos and don’ts to decrease radiation interference.
• Connect the welding equipment to the power supply lines.
• Maintain the welding equipment regularly.
• The cable should be short enough to be close to each other and the ground.
• Ensure the safety of all the welding metal parts and other parts nearby.
• The workpiece should be well earth.
• Shield or protect the other cable and equipment to decrease the effects of disturbances. The welding equipment can be completely shielded in some special conditions.
• Users are responsible for interference due to welding.

MACHINE DESCRIPTION

The welding machine is a rectifier adopting the most advanced inverter technology. The development of inverter welding equipment profits from the development of the inverter power supply theory and components. The inverter welding power source utilizes a high-power device IGBT to transfer 50/60Hz frequency up to 15KHz, then reduce the voltage and commutate, and output high- power voltage via PWM technology. Because of the great reduction of the main transformer’s weight and volume; the efficiency increases by 30%. The appearance of inverter welding equipment is considered to be a revolution for the welding industry.

The welding power source can offer a stronger, more concentrated and more stable arc. When stick and work piece get short, its response will be quicker. It means that it is easier to design into a welding machine with different dynamic characteristics, and it even can be adjusted for specialty to make arc softer or harder.
The welding machine has the following characteristics: effective, power saving, compact, stable arc, good welding pool, high no-load voltage, and good capacity of force compensation and multi-use. It can weld stainless steel, alloy steel, carbon steel, copper and other color metal. It can apply to electrodes of different specifications and materials, including acidity, alkalescent, and fibre. It can apply in high altitude, the open air and inside and outside decoration. Compared with the same products of home and abroad, it is compact in volume, light in weight, easy to install and operate.

The welding machine is most suitable for welding tubes, boilers, vacuum pressure vessels or higher quality for welding, which can gain perfect welding quality. In addition, this series machine has enough no-load voltage and the ability of output, ideal for long cable welding. Thanks for purchasing our product and hope for your precious advice. We will be dedicated to producing the best products and offer the best service.

WARNING！
The machine is mainly used in industry. It will produce radio wave, so the worker should make fully preparation for protection.

TECHNICAL PARAMETERS TABLE

Model

Parameters

| ****

ARC 400IT

---|---

Power voltage（V）

| Three Phase AC 380V±15%| Three Phase AC 415V±15%
Frequency （Hz）| 50/60| 50/60

Rated input current （A）

| ****

27.7

| ****

25.3

No-load voltage（V）| ****

62

| ****

68

VRD voltage (V)

| ****

18

Output current（A）| ****

40-400

Rated output voltage（V）

| ****

36

Force range（A）| ****

0-100

Duty cycle （%）| 40
No-load loss （W）| ****

80

Efficiency

| ****

85

Power factor

| ****

0.93

Insulation grade

| ****

H

Housing protection grade

| ****

IP21

Weight （Kg）| ****

22

Dimensions （mm）

| ****

508244423

INSTALLATION INSTRUCTION

The machine is equipment with power voltage compensation equipment. When power voltage moves between±15% of rated voltage, it still can work normally. When use a long cable, in order to prevent voltage form going down, bigger section cable is suggested. If cable is too long, it may affect the performance of the power system. So we suggest you to use configured length.

1.  Make sure intake of the machine not blocked or covered, lest cooling system could not work.
2.  Make sure the earth end of power interface has been reliably and independently grounded.
3.  Correctly connect the arc torch or holder according to the sketch. Make sure the cable, holder and fastening plug have been connected with the ground. Put the fastening plug into the fastening socket at the “-”polarity and fasten it clockwise.
4.  Put the fastening plug of the cable to fastening socket of “+” polarity at the front panel, fasten it clockwise, and the earth clamp at the other terminal clamps the work piece.
5.  Please pay attention to the connecting polarity, DC welding machine has two connecting ways: positive connection and negative connection. Positive connection: holder connects with “-” polarity, while work piece with the “+”polarity. Negative connection: work piece with the “-”polarity, holder with the “+” polarity. Choose suitable way according to working demands. If unsuitable choice, it will cause unstable arc, more spatters and conglutination. If such problems occur, please change the polarity of the fastening plug.
6.  According to input voltage grade, connect power cable with power supply box of relevant voltage grade. Make sure there is no mistake and make sure the voltage difference among permission range. After the above job, installment is finished and welding is available.

Attached components type list

Cable

| Input side| ≥4mm2
Output side| 50mm2
Earth cable| ≥4mm2
Electrode holder| Electrode holder above 500A is suggested.

If distance of work piece and machine is too far (500-100m), and the cables (torch cable and earth cable) are too long, please choose cable of bigger section to minimize the reduction of the voltage.

Installation Diagram

OPERATION INSTRUCTION

1.  Open the power switch, screen will show set current volume and the ventilator is beginning to revolve.
2.  Adjust knobs of welding current and arc-striking push, make welding function complies with demands.
3.  Generally, welding current is adequate to welding electrode according with as following.
4.  Knob of arc-striking drive is use to adjust welding function, specially in low current arrange, that is cooperated with knob of welding current adjustment, they may adjust current of arc striking and be out of control of knob of welding current adjustment .So machine can grain powerful energy and push current can achieve effect that may .
5.  If the anti-shock device is installed in the machine. When the switch of back panel is put “ON” position, the VRD indictor is lit, and when the switch is put “OFF” position, the VRD indicator is off, then the no-load voltage is 60-70V. Switch of VRD is put inside the machine, with the “on” condition. the no-load voltage changes to be less than 15V, which is safe for people.
6.  If welding machine has been coordinated remote control device:
7. Make sure the switch position of remote control device before operation .If switch is on “OFF” Position that is out of remote control. Switch is on “ON” position that is using remote control device.
8. Insert plug of remote control in socket of remote control correctly and tighten firmly in order to prevent poor contact.
9. If remote control device is not be used, make sure the switch is on “OFF” position, or welding current will not be adjusted on panel.
10.  Hot initiation: Heavy current, perfect effect, striking easier.

Specification

（mm）

| Φ1.6| Φ2.0| φ2.5| φ3.2| φ4.0| φ5.0| Φ6.0
---|---|---|---|---|---|---|---
Current（A）| 25~40A| 40~65A| 50-90A| 90-130A| 140-210A| 190-270A| 260~300A

WARNING!
Before connecting operation please make sure all the power is turned off. The right order is to connect the welding cable and ground cable to the machine first, and make sure they are firmly connected and then put the power plug to the power source.

PANEL FUNCTION INSTRUCTION

The images shown here are indicative only.

NOTES OR PREVENTIVE MEASURES

Environment

1. The machine can perform in an environment where conditions are dry with a dampness level of max 90%.
2.  The ambient temperature is between -10 to 40 degrees centigrade.
3.  Avoid welding in sunshine or drippings. Do not let water enter the gas.
4.  Avoid welding in dust area or the environment with corrosive gas.
5.  Avoid gas welding in an environment with strong airflow.

Safety norms
Our welding machine has installed protection circuit of over voltage, over current and over heat. When voltage, output current and temperature of machine are exceeding the rated standard, welding machine will stop working automatically. Because this will be damage to welding machine, user must pay attention to following.

The working area is adequately ventilated
Our welding machine is powerful machine, when it is being operated, it generated high currents, and natural wind cannot satisfy with machine cool demands. So there is a fan inside the machine for its cooling demands. Make sure the intake is not in block or covered, There should be 0.3 meter distance from welding machine to objects of environment. User should make sure the working area is adequately ventilated. It is important for the performance and the longevity of the machine.

Do not overload！
The operator should remember to watch the max duty current (Response to the selected duty cycle) Welding current should not exceed max duty cycle current. Over-load current will damage and burn up the machine.

No over voltage！
Power voltage can be found in diagram of main technical data. Automatic compensation circuit of voltage will assure that welding current keeps is in allowable range. If power voltage is exceeding allowable range limits, it can damage the components of machine. The operator should understand this situation and take preventive measures.

There is a grounding screw behind welding machine, with a grounding marker on it. Before operation, welding crust must be grounded reliably with cable which section is over square millimeter, in order to prevent from static electricity, and accidents because of electricity leaking.  If welding time is exceeding duty cycle limited, welding machine will stop working for protection. Because machine is overheated, temperature control switch is on “ON’’ position and the indicator light is red. In this situation, you don’t have to pull the plug, let the fan cool the machine. When the indicator light is off, and the temperature goes down to the standard range, it can weld again.

QUESTIONS TO BE RUN INTO DURING WELDING

Fittings, welding materials, environment factor, supply powers maybe have something to do with welding. User must try to improve the welding environment.

•  Arc-striking is difficult and easy to pause
  • key sure quality of tungsten electrode is high.
  •  If the electrode is not dried, it will cause an unstable arc, welding defect increase and the quality is down.
  •  If use an extra-long cable, the output voltage will decrease, so please shorten the cable.
• When power voltage departs from the rated value, it will make the output current not matched with rated value; when voltage is lower than rated value, the max output may lower than rated value.

This may be caused by the following factors

1.  Electric wire net voltage has been changed.
2.  There is harmful interference from electric wire net or other equipment.

Too much spatter during MMA welding

1.  Maybe current is too heavy while welding rod diameter is too small:
2.  Output terminal polarity connection is wrong. The positive connection should be applied at the normal technique, that is to say, welding rod connects with the negative polarity while the work piece with the positive polarity. So please change the polarity.

MAINTENANCE

1.  Remove dust by dry and clean compressed air regularly, if the welding machine is operating in an environment where is polluted with smokes and pollution air, the machine needs to be cleaned once a month.
2.  Pressure of compressed air must be within a reasonable range in order to prevent damaging to small components of inner machine.
3.  Check internal circuit of welding machine regularly and make sure the circuit connections are connected correctly and tightly (especially plug-in connector and components). If scale and rust are found, please clean it, and connect again tightly.
4.  Prevent water and steam from entering into the machine. If that happens, please blow it dry and check insulation of machine.
5.  If welding machine will not be used for long time, it must be put into the packing box and stored in dry and clean environment.

WARNING！
Connected welding machine to dynamotor directly will damage machine. The heavy voltage pulse which is produced by dynamotor will burn out machine when machine connected to dynamotor, only can use an asynchronous dynamotor whose frequency and voltage both are steady. Because of connecting welding machine to dynamotor directly lead to damage and malfunction, which is not in the guarantee.

TROUBLESHOOTING AND FAULT FINDING

Notes: The following operations must be performed by qualified electricians with valid certifications. Before maintenance,please contact with us for professional suggestion.
Fault symptom and solution.

Meter doesn’t display, fan doesn’t work, no welding output.

| 1.    Make sure power switch is off.

2.    Make sure the power source connecting to input cable is working alright.

3.    Make sure the input voltage is 3 phase.

Meter is normal, fan is working, no welding output.

| 1.    Check if all kinds of components of machine are poor contact.

2.    Check if connector of output terminal is broken or damaged.

3.   Check if the control board is damaged (contact with the supplier or manufacturer).

Abnormal indicator is on, fan is working, meter is normal

| ****

1.    IGBT is damaged.

2.    Rectifier of quick recovery is damaged.

3.    Control board is broken.

4.    The feedback circuit is in fault. Please contact with the supplier or manufacturer.

Too much spatter during MMA welding

| ****

Output terminal polarity connection is wrong. So please change the polarity.

Erratic welding output current or out of control of potentiometer.

| ****

1.    The potentiometer is damaged.

2.    All kinds of connectors are poor contact, especially plugs. Check them.

Power switch doesn’t work

| ****

1.    Power switch is broken.

2.    Three phase rectifier bridge is broken, replace it.

3.    Check if there is any short circuit of inner-machine.

If the welding machine doesn’t work after the above examination and repair, please contact the local dealer or after-sales service department of our company.

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