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General Safe Practices

 ■  Wear  approved  safety  glasses  with  side  shields  under  your  welding  helmet  or  face  shield  and  at  all      

    times in the work area.

 ■  When  working  above  floor  level,  use  a  safety  belt  to  protect  yourself  from  a  fall  should  you  get  a        

    shock.

 ■ Do not install or place machine on or over combustible surfaces.

 

■  Be  sure  that  all  installation,  operation,  maintenance  and  repair  procedures  are  performed  only  by 

qualified persons.

 Electric shock can kill.

 ■ Wear Dry, hole-free insulating gloves and body protection. Do not touch electrode with bare hand. Do 

not wear wet or damaged gloves.

 ■ Do not touch live electrical parts.

 ■ Never dip the electrode in water for cooling.

 ■ Properly install and ground all equipment.

 ■ Protect yourself from electric shock by insulating yourself from work and ground. Use non-flammable, 

dry insulating material if possible, or use dry rubber mats, dry wood or plywood, or other dry insulating 

material big enough to cover your full area of contact with the work or ground, and watch for fire.

 ■ Turn off input power using the disconnect switch at the fuse box before working on the equipment.

 ■ Frequently inspect input power cord for damage or bare wiring and repair or replace cord immediately 

if damaged.

 Fumes and gases can be dangerous.

 ■ Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases. 

When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to 

keep fumes and gases away from the breathing zone.

 ■ Use enough forced ventilation or local exhaust (forced suction) at the arc to remove the fumes from 

your breathing area.

 ■ Use a ventilating fan to remove the fumes from the breathing zone and welding area.

 Arc rays can burn eyes and skin.

 ■ Use welding helmet with correct shade of filter to protect your eyes from sparks and the rays of the 

arc.

 ■  Wear  welders  cap  and  safety  glasses  with  side  shields.  Use  ear  protection  when  welding  out  of 

position or in confined spaces. Button shirt collar.

 ■ Wear complete body protection. Wear oil-free protective clothing such as leather gloves, heavy shirt, 

cuffless pants and high boots.

Summary of Contents for longrun 350LA

Page 1: ...INVERTER AC DC TIG WELDER 350LA 500LA 600LA OPERATION MANUAL DO NOT INSTALL OPERATE OR MAINTAIN THIS MACHINE WITHOUT READING THIS MANUAL AND PLEASE ALWAYS THINK BEFORE YOU ACT www worldwel com...

Page 2: ...00 400 Input Capacity 380V KVA 13 5 7 3 21 7 15 9 25 9 17 8 No Load Voltage V 60 380V 62 380V 60 380V Output Current Range A 10 350 20 200 15 500 20 340 15 600 20 400 Output Voltage rated output V 24...

Page 3: ...of contact with the work or ground and watch for fire Turn off input power using the disconnect switch at the fuse box before working on the equipment Frequently inspect input power cord for damage o...

Page 4: ...s or other alternate circuits This can create fire hazards or overheat lifting chains or cables until they fail INSTALLATION The welding machine shall be installed at a place free from the inflammable...

Page 5: ...moving top cover 220V 380V 440V Output Connection Front of the machine Connect the work cable which is connected to the work clamp to the METAL terminal To connect the TIG torch connect a electrode ca...

Page 6: ...COOLING Output connection for stick welding Connect the work cable which is connected to the work clamp to the TORCH terminal Connect the electrode cable which is connected to the electrode holder to...

Page 7: ...ne will not supply power at the output If over heating occurs it will blinking on until the machine has sufficiently cooled by cooling fan or water If the output is disabled by any electrical problems...

Page 8: ...heat affected zone fewer deformations and reduced chance of cracking and gas entrapment 16 Crater current control It controls the crater current It is important to get the good welding quality 17 Dow...

Page 9: ...p and ready lamp are On and the cooling fan is running Select AC TIG or DC TIG from AC TIG DC TIG selection switch Start to weld with adjusting the proper welding current Adjust properly the pulse fre...

Page 10: ...ease the torch switch the arc is off and flow the gas during the after flow time Crater Repeat Press and hold the torch switch the machine will open the gas valve to start the flow of the shielding ga...

Page 11: ...oke down Reconnect Torch switch connector Replace Torch Replace Control PCB Gas flows continuous at Off position of GAS CHECK switch GAS CHECK switch broke down Torch broke down Control PCB broke down...

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Page 14: ...E RV24YN 500K 2 22 Selector Switch XK5378 1 23 FAN UF12A23STH M5 120T 2 24 FAN UF15P23BTH M5 150T 1 25 Terminal MJ 175 1 26 Toggle Switch DWT 6210 1 27 InputDiode 6RI 100E 080 1 28 IGBT 200A 600V 2 29...

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Page 16: ......

Page 17: ...V1 1 21 VOLUME RV24YN 500K 2 22 Selector Switch XK5378 1 23 FAN 120T 2 24 FAN 150T 1 25 Terminal MJ 175 1 26 Toggle Switch DWT 6210 1 27 InputDiode 6RI 100E 080 1 28 IGBT 200A 600V 2 29 IGBT Drive PC...

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Page 19: ......

Page 20: ...24YN 500K 2 21 Selector Switch XK5378 1 22 FAN 120T 2 23 FAN 150T 1 24 Terminal MJ 175 1 25 Toggle Switch DWT 6210 1 26 InputDiode 6RI 100E 080 1 27 IGBT 200A 600V 2 28 IGBT Drive PCB WGE 01 2K10 2 29...

Page 21: ...e information you have recorded above The date number is especially important when identifying the correct replacement parts Complete this form please fax it to our selling agency in your country or u...

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