Taurus MIG-350I Operation Manual Download Page 14

 

- 13 - 

1.4. The in-time protection circuit provides signals to the PWM warning for 

overheat and over-current situations; 

1.5. A closed-loop control system ensures a good anti-grid fluctuation ability and 

an excellent cutting performance. 

 

Installation and Wiring 

1. Location Requirements 

1.1. The machine should not be installed in an area where it is exposed to direct 

sunlight or rain but where the humidity is as low as possible and the ambient 

temperature is within the range of -10°C - 40°C. 

1.2. The machine should be installed on a flat, preferable level surface but, in 

any case not on a surface with an inclination of more than 10 °. 

1.3. The  machine  should  not  be  operated  in  a  work  station  exposed  to  wind.   

Should a windy environment be unavoidable, suitable screening should be 

installed. 

1.4. In  order  to  allow  for  efficient  ventilation,  a  clear  space  of  at  least  20cm 

should  be  allowed  in  front  of  and  behind  the  machine  as  well  as  at  least 

10cm at each side. 

 

2. Power input requirements 

The power supply waveform should be the standard sin wave, the rated voltage 

380V±10% 50/60Hz. Three phase voltage unbalance should be 

 5

%. 

Model 

MIG-350I 

MIG-500I 

Parameters 

Value 

Power supply

 

3PH-AC380V±15% 50/60Hz 

Rated input current: 

22.8A 

38.5A 

Input cable

 

≥4.0mm

2

 

≥4.0mm

2

 

Output cable

 

35mm

2

 

50mm

2

 

Ground cable

 

≥4.0mm

2

 

≥4.0mm

2

 

Summary of Contents for MIG-350I

Page 1: ...Inverter Gas Metal Arc Welding Machine MODELS MIG 350I MIG 500I Operation Manual Read this manual carefully before installing operating and maintaining the machine...

Page 2: ...nted in this operation manual This manual will contain as far as possible preventive and safe operation measures related to the equipment but cannot exclude the occurrence of accidents Therefore the m...

Page 3: ...s 3 Warnings 4 Packaging and Transportation 7 Parameter 8 Product Description 8 Working Principle 12 Installation and Wiring 13 Brief Procedure for Welding Operation 17 Maintenance 21 Common Machine M...

Page 4: ...the following safety precautions must be followed 1 The operator must be suitably qualified and certificated before operating the equipment 2 A qualified professional should be employed to ensure that...

Page 5: ...kin damage Avoid clothes with front pockets and button up sleeves and collars 3 Use appropriate flame retardant shields or curtains to protect bystanders from arc radiation and high temperature sparks...

Page 6: ...as a secure ground clamp is important 2 Insulation layers of electric wires and cables must be checked regularly for wear and replaced if necessary 3 All equipment used and clothing worn during the w...

Page 7: ...achine Protection from Fumes and Gases During the welding or cutting process fumes can be produced which may be detrimental to health 1 The working area should be well ventilated and welding cutting a...

Page 8: ...n use If there is no hose connected to the flowmeter then cover the outlet with a dust cap Protection Against Moving and Rotating Parts Moving parts such as fans rotors and belts can be hazardous 1 En...

Page 9: ...e and reliable transformer with a 30 improved efficiency Added to the advantages of the inverted power supply the Model MIG 350I MIG 500I Item Value Rated input voltage 3PH AC380V 15 50 60Hz Rated inp...

Page 10: ...ons served by a digital CPU control system delivering a precise digital output 1 2 High efficiency and duty cycle and a noiseless rectifier 1 3 A stable welding process and excellent arc self regulati...

Page 11: ...ght is lit 2 Inching wire feeding button Button pressed starts wire feed Button pressed again stops wire feed 3 Crater current adjustment Rotate the knob to adjust the crater current 4 Wire feeder con...

Page 12: ...terminal and the earth cable is connected to the positive terminal 6 Push button trigger mode Switch between 2T and 4T trigger modes and operate when the corresponding light is lit 7 Gas Press and hol...

Page 13: ...se the trigger and the wire feed starts and current reaches preset value t2 t3 Pressing the trigger again stops the wire feeding and drops the current to zero Post flow gas will continue for a short p...

Page 14: ...urface but in any case not on a surface with an inclination of more than 10 1 3 The machine should not be operated in a work station exposed to wind Should a windy environment be unavoidable suitable...

Page 15: ...wer supply to the control box must be switched off 3 4 An earth cable set must be securely connected from the machine to the work piece The machine must be earthed 3 5 Ensure that the required power s...

Page 16: ...he welding machine 4 1 The cylinder must be fixed to a wall cylinder rack or support Its centre of gravity can cause the cylinder to topple resulting in injury and material damage 4 2 The cylinder mus...

Page 17: ...r use on different wire materials and diameters Scale Table Diameter Pressure Drive roll 0 8mm 1 0mm 1 2mm V groove roll 3 3 2 5 Pressure scale Knurled roll 1 5 2 The actual pressure scale to be used...

Page 18: ...zzle can cause a nasty jab Brief Procedure for the welding operation 1 Procedure for MIG Welding 1 1 Wear the necessary welding protection equipment such as helmet mask earplugs protective clothing gl...

Page 19: ...wire diameter 1 13 Release the wire feed pressure and direct the welding wire into the groove of the wire feeding roller through the wire guide tube into the wire guide tube of the central socket 1 1...

Page 20: ...pole Use the electrode holder to clamp the electrode 2 7 Switch on the machine and ensure the indicator light is lit and the fan is operational 2 8 Select the MMA mode on the front panel Preset the we...

Page 21: ...the cylinder 5 1 2 Check the gas flow and ensure there is sufficient flow rate shielding for the job at hand The flow rate should never be below 3 l min 5 1 3 Ensure that the gas flow to the torch is...

Page 22: ...er switch is operational and the fan operates smoothly when the machine is switched on 1 4 Whether cables are correctly connected insulated and in sound order 1 5 Torch consumables are subject to wear...

Page 23: ...within the range of 340V 420V and that all phases on a three phase system are intact 1 2 Check if the power cable as well as the earth wire is firmly connected 1 3 Check whether the wiring connection...

Page 24: ...o no load output Overheated power supply owing to insufficient ventilation Improve the ventilation condition Ambient temperature too high Automatic recovery after 5 10 minutes Duty cycle exceeded Auto...

Page 25: ...Common Welding Imperfections and Analysis No Imperfect Root Cause 1 Porosity 1 Impure gas or insufficient gas supply 2 Absorption of air during welding 3 Failed preheater 4 Poor gas shielding owing to...

Page 26: ...Wire straighteners not properly adjusted 5 Loose or worn contact tip 4 Unstable welding arc 1 Loose or worn contact tip or too large in diameter for the wire thickness 2 Uneven wire spool rotation ex...

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