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for 10 minutes to cool the fan. When operating the machine again, the welding output current or 

the duty cycle should be reduced. 

§3.3 Polarity Connection 

§3.3.1 MMA operation 

 

 

 

 

 

 

 

 

 

Fig 3.2 welding polarity connection of MMA 

 

Choosing the connection of DCEN or DCEP according to the arc stable burning condition. 

The different electrodes need different connection. Please refer to the electrode manual. 

 

Put the switch (4T/2T/MMA) of the front panel on MMA shelf before doing MMA welding.

 

§3.3.2 Assembling the equipment (TIG) 

Ar

workpiece

DCEN

torch

GT-1600

GT-1600

Rear panel

Front panel

Argon gas 

bottle

Gas hose

Shield gas 
input joint

Shield gas 

connector

Aero 

socket

Return current 

cable

Control cable of 

torch switch

pipe

Negative 

output

Positive 

output

Welding cable

 

Fig 3.3 welding polarity connection of TIG 

Front panel

workpiece

electrode

DCEN

Welding holder

Front panel

workpiece

Welding holder

electrode

DCEP

Summary of Contents for JEFTIG GT Series

Page 1: ...Completely before attempting to use this equipment Save this manual and keep it handy for quick reference Pay particular attention to the safety instructions we have provided for your protection Cont...

Page 2: ...ar panel take GT 1600 for an example 10 4 2 Welding current adjustment 11 4 3 Down slope time for TIG Arc force for MMA adjustment 11 4 4 Welding Operation 11 4 4 1 TIG operation 11 4 4 2 Striking arc...

Page 3: ...tic capacitors ELECTRIC SHOCK CAN KILL Never touch electrical parts Wear dry hole free gloves and clothes to insulate yourself Insulate yourself from work and ground using dry insulation Make certain...

Page 4: ...a respirator may be required Additional precautions are also required when welding on galvanized steel Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing cleaning or s...

Page 5: ...the proper steps have been taken to insure that such procedures will not cause flammable or toxic vapors from substances inside They can cause an explosion even though they have been cleaned Vent holl...

Page 6: ...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 conclusion we shou...

Page 7: ...er s power factor to 0 99 So it is non pollution to the power net and it improves the quality of the power supply The welding machine possesses additional function with remote controller The remote ca...

Page 8: ...f welding craft PFC Inverter Medium frequency transformer Medium frequency rectify Hall device Current positive feedback control Single phase AC DC AC DC AC220V AC110V AC DC Rectify Fig 2 1 working pr...

Page 9: ...440 140 230 Weight Kg 9 5 Note The above parameters are subject to change with the improvement of machines 3 2 Duty cycle Over heat The letter X stands for duty cycle which is defined as the proportio...

Page 10: ...on Please refer to the electrode manual Put the switch 4T 2T MMA of the front panel on MMA shelf before doing MMA welding 3 3 2 Assembling the equipment TIG Ar workpiece DCEN torch GT 1600 GT 1600 Rea...

Page 11: ...r to 5 4 for detailed connection Those two pipe holder in packing list 5 3 are used to connect strength pipe with argon gas bottle and shield gas connector Consumable parts for TIG torch such as tungs...

Page 12: ...itch the power pilot lamp is on switching off the switch the lamp is off 2 Alarm pilot lamp When the welder is over voltage less voltage over current or over heated the alarm pilot lamp will be on 3 L...

Page 13: ...elding current adjustment Take GT 1600 for an example The adjusted welding current range is 5 160A GT series welders have the function of pre set welding current Having this function is not only conve...

Page 14: ...lding current t3 t4 Press the gun switch again The output current will drop to 5A within the pre set time t4 t5 Output crater current the setting value is 5A t5 Loosen the gun switch stop arc and argo...

Page 15: ...ce the waste of tungsten electrode and prolong its usage time MMA During the welding operation if the electrode touches the workpiece to form short circuit after 2s the welding current will drop to 0A...

Page 16: ...ee motions to being matched in the end of electrode the electrode moving to the molten pool along axes the electrode swing right and left the electrode moving along welding way The operator can choose...

Page 17: ...hing The corresponding relationship between gas nozzle diameter and electrode diameter Gas nozzle diameter mm Electrode diameter mm 6 4 0 5 8 1 0 9 5 1 6 or 2 4 11 1 3 2 Notice the above parameters or...

Page 18: ...tainless steel single run welding Workpiece thickness mm Joint form tungsten electrode diameter mm welding wire diameter mm Argon gas flow rate L min 1 welding current DCEP Welding speed cm min 1 0 8...

Page 19: ...chine against heavy rain or in hot circumstance against direct sunshine The content of dust acid corrosive gas in the surrounding air or substance can not exceed normal standard Parameters of piping b...

Page 20: ...ch 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...

Page 21: ...department if there are no accessories After turn on power watch listen to that whether the arc welding machine has shaking whistle calling or peculiar smell If there is one of the above problems fin...

Page 22: ...dispatched from the factory they have already been debugged accurately So forbid anyone who is not authorized by our company to do any change to the equipment Maintenance course must be operated caref...

Page 23: ...valve Remove it Electromagnetic valve is damaged Change it 8 When welding it is hard to strike arc or easy to stick MMA Connector is loose or connection is not good Check and screw it There is oil or...

Page 24: ...2 OC1 OC2 Pr1 AC110 220 50 60H Z C14 R13 C15 R14 OUT Lf OUT FAN LED1 Pr3 R5 IGBT1 IGBT2 IMOUT HF QF QD8 QD3 QD1 QD2 IFB OT AC3 AC4 R3 C2 C1 R4 C12 C8 C7 C6 C11 C10 C9 C13 R11 R12 IGBT D Rs L boost C...

Page 25: ...23 APPENDIX 2 The electric drawing of Gun Switch 1 2 3 1 2 3 GU N SW ITC H Aer ial socket...

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