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Inverter Gas Metal Arc Welding

Machine

MODELS

MIG-350I & MIG-500I

Operation Manual

Read this manual carefully before installing,

operating and maintaining the machine.

Содержание MIG-350I

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...