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OPERATOR'S MANUAL
Inverter DC TIG /MMA Arc Welding Machine
2009.11
IMPORTANT: Read this Owner's Manual 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. Contact your
distributor if you do not fully understand this manual.
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Table of Contents
Troubleshooting
Related Manuals for Jefferson JEFTIG GT Series
Summary of Contents for Jefferson JEFTIG GT Series
- Page 1 OPERATOR’S MANUAL Inverter DC TIG /MMA Arc Welding Machine 2009.11 IMPORTANT: Read this Owner’s Manual 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. Contact your distributor if you do not fully understand this manual.
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Page 2: Table Of Contents
CONTENT CONTENT §1 SAFETY ........................1 §1.1 Signal Explanation ..................... 1 §1.2 Arc Welding Damage ..................1 §1.3 The knowledge of Electric and Magnetic Fields ..........4 §2 SUMMARY ......................5 § 2.1 Brief Introduction ....................5 §2.2 Working Principle ....................5 §2.3 Volt-Ampere Characteristic ................ -
Page 3: Safety
§1 SAFETY §1.1 Signal Explanation The above signals mean warning! Notice! Running parts and getting an electric shock or thermal parts will take damage for your body or others. The corresponding notices are as follows. It is quite a safe operation after taking several necessary protection measures. §1.2 Arc Welding Damage ... - Page 4 The connection should be as close as possible to the area being welded. Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe operating condition. Replace damaged insulation. Never dip the electrode in water for cooling. ...
- Page 5 operating or repairing equipment. Do not put your hands near the engine fan. Do not attempt to override the governor or idler by pushing on the throttle control rods while the engine is running. DO NOT adds the fuel near an open flame welding arc or when the engine is running.
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Page 6: The Knowledge Of Electric And Magnetic Fields
A safe distance from arc welding or cutting operations and any other source of heat, sparks, or flame. Never allow the electrode, electrode holder or any other electrically “hot” parts to touch a cylinder. Keep your head and face away from the cylinder valve outlet when opening the cylinder valve. ... -
Page 7: Summary
§2 SUMMARY This operation manual is suitable for the models of GT-1600, 2000. § 2.1 Brief Introduction GT- series welding machine is a general TIG arc welder which adopts the latest pulse width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can realize TIG operation and change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer. -
Page 8: Volt-Ampere Characteristic
rectified into DC (about 380V) with PFC, then is converted to medium frequency AC (about 50KHz) by inverter device (IGBT module), after reducing voltage by medium transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery diodes), and is output by inductance filtering. -
Page 9: Installation And Adjustment
§3 INSTALLATION AND ADJUSTMENT §3.1 Parameters Model GT-1600 GT-2000 Parameters Single phase Single phase Single phase Single phase Power source 110V/115V 220V/230V 110V/115V 220V/230V AC 50 Hz AC 50 Hz AC 50 Hz AC 50 Hz 20.7 Rated input current（A） Rated input power（KW）... -
Page 10: Polarity Connection
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 Front panel Front panel Welding holder Welding holder electrode electrode workpiece workpiece DCEN DCEP... - Page 11 Workpiece is connected to the positive electrode of welding machine, and welding torch is connected to the negative electrode, which is called DC POSITIVE CONNECTION; otherwise, that is called DC NEGATIVE CONNECTION. Generally, it is usually operated in DC POSITIVE CONNECTION in TIG welding mode. ...
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Page 12: Operation
§4 OPERATION §4.1 Layout for the front panel and the rear panel (take GT-1600 for an example) GT-1600 DC TIG WELDER LIFT 110V ARC FORCE(MMA) 220V CURRENT DOWN SLOPE(TIG) Fig 4.1 schematic drawing of the front panel and rear panel Power pilot lamp putting through the power source switch, the power pilot lamp is on;... -
Page 13: Welding Current Adjustment
10 Connector The welder’s positive polarity output. 11 Power cable clip To fix power cable. 12 Power source switch Switch to “ON”, the welder is turned on, while switch to “OFF”, the welder is turned off. 13 Shield gas input joint To connect one head of the gas hose while the other head of which is connected to argon gas cylinder. - Page 14 I(A) Press the welding gun again Welding current Loose the welding gun Loose the welding gun Press the welding gun and hold it t(s) Fig 4.4 the flow chart of the 4T operation Introduction ： 0： Press and hold the gun switch, Electromagnetic gas valve is turned on. The shielding gas stars to flow.
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Page 15: Striking Arc Way For Mma
t1： Striking arc and output start current (the setting value is 5A). t2～t3： Loosen the gun switch and the output current will drop according to the pre-set time. t3： Stop arc and argon still keeps on; t3～t4：... -
Page 16: Manipulation Of Electrode
Lifting arc: take the electrode to scrape the workpiece for striking arc. But it may cause the arc scratch, so must to lift arc in the groove. electrode electrode electrode workpiece workpiece workpiece touch scrape 2~ 4mm Scrape the workpiece for Electrode touch Lift up for about 2-4mm strinking arc... -
Page 17: The Explanation Of Welding Quality
§4.5.2 The explanation of welding quality The relation of welding area color & protect effect of stainless steel Welding area argent , golden blue red-grey grey black color Protect effect best better good worst The relation of welding area color & protect effect of Ti-alloy Welding area white powder of bright argent... - Page 18 Tungsten electrode shape and the welding current range (DCEP) tungsten sharpened of the angle of cone background electrode pulse current electrode （°） current/A diameter/mm diameter /mm 0.125 2～15 2～25 0.25 5～30 5～60 8～50 8～100 10～70 10～140 12～90 12～180 15～150 15～250 20～200 20～300 Notice: the above parameters originate from《Welding Dictionary》P149, Volume 1 of Edition 2.
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Page 19: Electrode Selection
Parameters of piping back sealing welding for mild steel （DCEP） Argon Welding Piping Tungsten Welding flow rate rate Gas nozzle Welding diameter electrode wire diameter/mm current/A voltage/V Φ/mm diameter/mm diameter/mm L·min cm·min 75～90 11～13 6～8 4～5 75～95 11～13 6～8 4～5 75～100 11～13 7～9... -
Page 20: Operation Notices
● Take care that there is sufficient ventilation during welding. There is at least 30cm free distance between the machine and wall. §4.7 Operation Notices ● Read §1 carefully before use this equipment. ● Connect the ground wire with the machine directly. ●... -
Page 21: Maintenance & Troubleshooting
§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. -
Page 22: Troubleshooting
Observe that Whether the current output cable is damaged. If it is damaged, it should be wrapped up, insulated or changed. Using the dry compressed air to clear the inside of arc welding machine. Especially for clearing up the dusts on radiator, main voltage transformer, inductance, IGBT module, the Monthly fast recover diode and PCB, etc. - Page 23 Troubles Reasons Solution The fan motor damaged Change fan No power supply input Test the power supply input Turn on the power source, and the power light is not on and fan doesn’t work. The power supply resistance is broken Change the resistance (4Ω) no-load voltage...
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Page 24: Appendix 1: Electrical Principle Drawing
APPENDIX 1: Electrical principle drawing... -
Page 25: Appendix 2:The Electric Drawing Of Remote Controller
APPENDIX 2:The electric drawing of Gun Switch GU N SW ITC H Aer ial socket...
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