Inverter Fusion i-TECH AC/DC 250 User Manual
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Inverter Fusion i-TECH AC/DC 250 User Manual

Digital ac/dc tig welding machine
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i-TECH
AC/DC 250
Digital AC/DC TIG

Welding Machine

User Manual
Do not attempt to set up or operate this equipment until you have read & fully
understood the contents of this manual. If you do not fully understand any of the
instructions, please contact your supplier for further information & advice before
beginning any welding procedure.

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Summary of Contents for Inverter Fusion i-TECH AC/DC 250

  • Page 1: Welding Machine

    i-TECH AC/DC 250 Digital AC/DC TIG Welding Machine User Manual Do not attempt to set up or operate this equipment until you have read & fully understood the contents of this manual. If you do not fully understand any of the instructions, please contact your supplier for further information &...

  • Page 2: Table Of Contents

    11. Troubleshooting ....................23 1. General Description  The i-TECH AC/DC 250 is a triple-functional machine which can be used as an MMA, AC TIG, or DC TIG (PULSE TIG) welder.  All ferrous metals, titanium, stainless steel, aluminium and alloyed materials can be used for the full range of welding in all positions.

  • Page 3: Warranty

    2. Warranty 1. Your i-TECH AC/DC 250 welder is covered by a comprehensive 2 year return-to- base parts & labour warranty. 2. Improper use, abuse or any attempt to repair the product by an unauthorised third party will invalidate any warranty claim.

  • Page 4: Technical Specifications

    4. Technical Specifications Input Voltage: 1 phase 220~240V ±10%, 50/60Hz Rated No-load Voltage Rated Output Current 250A Rated Duty Cycle Output Current Range 5-250A DC TIG Rated No-load Voltage Rated Output Current 250A Rated Duty Cycle Pulse Current Range 5-250A Base Current Range 5-250A AC TIG...
  • Page 5 Current Up-slope Time 0.1-15S Current Down-slope Time 0.1-15S Pulse Frequency Range 0.2-20Hz Pulse Width Range 1-100% Gas Pre-flow Time 0.1-15S Gas Retard Time 0.1-15S Arc Start Mode HF arc striking Arc Crater Mode 2T/4T TIG Torch Gas-cooling Efficiency ≥80% Insulation Class Protection Degree IP21S Gross Weight...

  • Page 6: Panel Layout

    5. Panel Layout Item Symbol Description Control panel Output connectors Power switch Input power cable: 1~ phase 220-240V, 50/60Hz Gas input connector Ground/Earth connector NB. Not to be used for the welder earth clamp.

  • Page 7: Connections

    6. Connections Item Description Gas Bottle Power supply/phase 220~240V, 50/60Hz Foot Pedal Connection socket, “+” welding current - TIG: Connection for workpiece lead - MMA: Electrode holder or workpiece lead connection Connection socket 5-pole: standard TIG torch control lead; foot pedal control lead M16x1.5”...

  • Page 8: Special Features

    7. Special Features 7.1. Special Features, Definitions and Glossary...

  • Page 9: Ac Wave Controls

    7.2. AC Wave Controls...

  • Page 10: Mix Tig Control

    7.3. MIX TIG Control The AC current can get a very good clearance, while the DC current can get a deeper penetration. Using the MIX TIG you can get an excellent Arc Concentration; this can be carried out on thin and thick plates. Advantages of MIX TIG: 1) Nice weld appearance;...

  • Page 11: Glossary

    7.4. Glossary...

  • Page 15: Method Of Operation

    8. Method of Operation Please ensure you follow these instructions whilst setting up your i-TECH AC/DC 250: Operation: 1.1. MMA Connection In the MMA process the ideal connection type is Negative Output Connector to Electrode Holder and Positive Output Connector to Earth Clamp. Straight connection can also be used (Negative Output to the Earth Clamp).
  • Page 16 Operation: 1.2. MMA Process...
  • Page 17 Operation: 2.1. TIG Connection...
  • Page 18 Operation 2.2. DC TIG Process...
  • Page 19 Operation: 2.3. AC TIG Process...
  • Page 21 Operation: 2.4. MIX TIG Process...
  • Page 22 Operation: 3.1. Memory MEMORY is available for all MMA and TIG welding processes. Recall previous settings from Memory: 1) Push to select the memory channel number. 2) Push to recall/use the stored settings. It is also possible to adjust stored parameters and save the adjusted settings in the same memory channel or a new channel.

  • Page 23: Caution

    5. Avoid MIG welding in environments with a strong airflow. 9.2. Ventilation The i-TECH AC/DC 250 contains an inner fan which cools it effectively, enabling it to work steadily for longer periods. To enable the fan to work efficiently, always ensure that the louvers on the front panel are uncovered and unblocked and that the minimum distance between the machine and other objects is 30cm.

  • Page 24: Troubleshooting

    11. Troubleshooting Fault Cause Remedy Ensure that the machine is connected No mains power to a suitable live mains power source available The power on and is switched on LED is not lit The fuse in the plug is Replace the fuse no longer working Stop welding for a while to allow the The machine has...
  • Page 28 Heathpark Way, Heathpark Industrial Estate, Honiton, Devon, EX14 1BB 01404 549791 sales@inverterfusion.co.uk | www.inverterfusion.co.uk @IFL_Welders Inverter Fusion Ltd...

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