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§5 MAINTENANCE & 

TROUBLESHOOTING 

§5.1 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 5 minutes, until capacity voltage already drop to safe voltage 36V! 

Date 

Maintenance item 

Daily 

examination 

Observe that whether panel knob and switch in the front and at the back of arc welding 

machine are flexible and put correctly in place. If 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 replace 

immediately; Please get in touch with our company maintenance service 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, find out the reason 

to get rid of; if you can't find out the reason, Please contact local this area our company 

agent or the branch 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.   

Observe that whether the min/max value on LED accords with the set value. If there is 

any difference and it has affected the normal welding craft, please adjust it. 

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 rotate after the arc welding 

machine is overheated , observe that whether 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.   

Observe that whether the fast connector is loose or overheated. if the arc welding 

machine has the above problems, it should be fastened or changed.   

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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