background image

Welding Mode

Crater Off

Press and hold the torch switch, the machine will open the gas valve to start the flow of the
shielding gas during the pre-flow time and then the arc is started at welding current. When
finish to weld, release the torch switch, then the arc is off and flow the gas during the gas
after-flow time.

Crater On

Press and hold the torch switch, the machine will open the gas valve to start the flow of the
shielding gas during the pre-flow time and the arc is started at the crater current. At this time
release the torch switch, the output current will be increased from the crater current to the
welding current during the up slope time. When finish to weld, press and hold the torch switch,
the output current will be decreased from the welding current to the crater current during the
down slope time. At this time release 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 gas during the pre-flow time and the arc is started at the crater current. At this time
release the torch switch, the output current will be increased from the crater current to the
welding current during the up slope time. At this time Press and hold the torch switch, the
output current will be decreased to crater current and then release the torch switch, the output
current will be increased to welding current. When finish to weld, press and hold the torch
switch, the output current will be decreased from the welding current to the crater current during
the down slope time. At this time just release the torch from the metal to be welded and then
the arc is off and flow the gas during the after-flow time.

Welding current

Start current

Crater current

Down slope time

Gas after-flow time

Содержание LONGRUN 500LT3

Страница 1: ...INVERTER DC TIG ARC WELDER LONGRUN 500LT3 OPERATION MANUAL DO NOT INSTALL OPERATE OR MAINTAIN THIS MACHINE WITHOUT READING THIS MANUAL AND PLEASE ALWAYS THINK BEFORE YOU ACT WWW WORLDWEL COM...

Страница 2: ...hout going back to power source ITEM UNIT SPECIFICATION Rated Input Voltage V 220 380 440 50 60Hz 3 Phase Process TIG STICK Rated Output Current A 500 340 Input Current rated output 380V A 21 15 No Lo...

Страница 3: ...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...

Страница 4: ...d rain not generated oil vapor and corrosive gas operating temperature range is from 10 to 40 least 30 away from wall and other welding machine Input Connection Rear of the machine Be sure the voltage...

Страница 5: ...If you want to connect the remote controller connect the connector of remote controller to REMOTE CONTROL terminal If the water cooling unit is installed connect the water input hose of water cooled t...

Страница 6: ...ection 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 the METAL terminal...

Страница 7: ...ectrical circuit inside the machine will be operated 6 Welding Current Control Adjust the welding current 7 Welding Mode Selector It has four welding modes Crater Off Crater On Crater Repeat and Stick...

Страница 8: ...nt upslope time downslope time gas after flow time Turn On the power switch of welder and then verify that the power lamp and ready lamp are On and the cooling fan is running Connect the remote contro...

Страница 9: ...time At this time release 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 fl...

Страница 10: ...position of GAS CHECK switch GAS CHECK switch broke down Torch broke down Control PCB broke down Replace GAS CHECK switch Replace Torch Replace Control PCB It does not adjust the welding current and...

Страница 11: ......

Страница 12: ......

Страница 13: ...0LT3 VR 1 14 Front PCB 500LT3 LED 1 15 META PCB KSM 7B 1 16 FUSE 5A 1 17 Selecto Switch XK5378 1 18 FAN 120T 2 19 FAN 150T 1 20 CapSwitch SZW26 63 D344 424 1 21 InputDiode 6RI 100E 080 1 22 IGBT 200A...

Страница 14: ...Number Date Purchased Where Purchased Where you use Whenever you request replacement parts or information on this machine always supply the information you have recorded above The date number is espec...

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