i-TECH AC/DC 250 User Manual
Contents
1. MIX TIG Pulse Frequency 9 0 2 MIX TIG DC output time DC Balance 10 Push to select AC Freq AC Balance Independt EN EP Amperage for adjusting 17 Frequency 12 z Aer 0 413 ez Indepedent AC Amperage Control EN EP Balance 9 14 Bene Remote used for foot pedal or Remote torch Local adjusted Currents by face panel 15 E Memory with capacity of 10 sets parameters 16 Function sequence see next chapter 11 4 PEAK t PPS f Seel ES AMP ll BASE AMP 2 INITIAL AMP 9 a D FINAL 6 LY spotArc B amp Item Symbol Description 1 al Gas pre flow time TIG Absolute setting range 0 1 s to 5 0 s 0 1 s increments 2 INITIALAMP Ignition current TIG Hotstart current MMA Percentage of the main current Setting Percentage of the main current Setting range 1 to 100 1 9o increments range 1 to 150 96 1 9o increments 3 BAR Up slope time TIG Hotstart time Setting ranges 0 00 s to 20 0 s Setting ranges 0 00 s to 5 0 s 0 1 s increments 0 1 s increments The up slope time can be set separately for non latched and latched 4 AMP Main current TIG pulse current Main current MMA min to max 1 A increments min to max 1 A increments 5 secius Pulse time Pulse time setting range 0 01 s to 9 99 s 0 01 s increments TIG pulses TIG AC S2. foot pedal 10 Memory is availabe for all the process 19 an a 3 Operation 2 4 MIX TIG Process Power ofp DC TIG RR Hz aT HOL VALANCE Warning MIX TIG MIX TIG DC MMA e AMP sec sec BASE AMP 9 spotArc e INITIAL AMP bun AMP TRADE p Quz E E A EN BA kHZ DANCE ENIEP AMPERAGE Item Symbol Description 1 Select the welding process AC TIG Select the Dia of Tungster Electrode 3 ES 2T 4T holding mode selection Arc start position DC DC 5 Select to adjust MIX TIG Pulse Freq MIX TIG DC Balance r Ra a 6 Eg gt Select and adjust the welding parameters remote 7 eo Used to connect the foot pedal D Memory is availabe for all the process 00 E Operation 3 1 Memory MEMORY is available for all and TIG welding processes Recall previous settings from Memory cH 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 Store settings using Memory 1 Select a memory channel to store current settings parameters Do not push to re save in the same channel me 2 Push to save the settings parameters to this memory channel 21 9 Caution 9 1 Working environment 1 Welding sho
3. to Electrode Holder and Positive Output Connector to Earth Clamp Straight connection can also be used Negative Output to the Earth Clamp Remember the part connected to the positive will carry the most heat E Item Symbol Description 1 Electrode holder 2 f Workpiece Connection socket welding current 3 m Workpiece lead or electrode holder connection 4 Connection socket for welding current Electrode holder or workpiece lead connection 14 Operation 1 2 MMA Process DC BALANCE Warning MIX TIG PPS f REMOTE sec Hz Sec 0 LOCALE AMP p sec BASE AMP sec spotArc INITIAL AMP gt FINAL AMP Symbol Description A Process selection switch DC MMA Main Current indicating lamp AMP on the face panel would be light Adjust the Encoder switch to proset change the welding current Memory is availabe for all the process 15 Operation 2 1 TIG Connection 8 I 1r7 7 9 Item Symbol Description 1 gt Welding torch 2 Welding torch hose package 3 ES Connection socket welding current Welding current lead connection for TIG welding torch 5 Connection socket 4 5 pole Standard TIG torch control lead Foot pedal control lead 5 CT M16X1 5 connecting nipple TIG welding torch shielding gas connection 6 Workpiece Connectio
4. 7 3 MIX TIG Control MIX TIG 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 AC TIG out on thin and thick plates Advantages of MIX TIG 1 Nice weld appearance deep penetration 2 Excellent Arc Concentration 3 Substantially reduces electrode consumption MIX TIG Frequency Hz MIX TIG cycle time agg I Adjustable range La DC 0 1 10Hz TA MIX TIG Balance DC DC Balance tad Tmix x 100 MIK Freguency MIX TIG Balance DC DC Balance tad Tmix x 100 AC DC tad lt MIX Cycle Time 1Hz 7 4 Glossary DC TIG AC TIG MIX TIG DC MMA A Item Symbol REMOTE sects LOCALE INITIAL AMP A EN ENIEP AMPERAGE Description 1 O pc ric O Ac TIG MIX TIG MMA Process Selection 20 O 2 4 3 2 e 4 lt Tungsten Electrode Dia From 2 0mm to gt 4 0mm i Pulse ON OFF selection amp 2T STD 4 4T HOLD 6 e 21 41 holding mode or Spot Welding mode selection 10 Item Symbol Description c 5 O pc DC converter output arc starting of AC TIG process MIX TIG process enn 6 e Select the AC wave type square wave or sine wave 7 MIK TIG adjusting
5. INVERTER FUSION LTD 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 amp fully understood the contents of this manual If you do not fully understand any of the instructions please contact your supplier for further information amp advice before beginning any welding procedure Contents General OS GE Plone nie nee ee 1 Bo T Lm 2 SECUS A 2 Technical Specifications u 3 5 OI ee ee PP ee en 5 CORE ION __ 6 Fe Special Features ere 7 7 1 Special Features Definitions and 7 LLAC WOVE COMME ONS Seren 8 Ha WIDCTO CONTO MR 9 A An 10 8 Method of OPIO 14 ALTON 22 o NR E BEG 22 11 ROO 1818 ee A 23 1 General Description The i TECH AC DC 250 is triple functional machine which be used as MMA AC TIG or DC TIG PULSE TIG welder All ferrous metals titanium stainless steel aluminium alloyed materials can be used for the full range of welding in all positions The welding current is very consistent and is adjustable on a continuous scale It is compact and portable The i TECH AC DC 250 uses a double inverter system the ATMEGA SCM controlling system and IGBT transistors 2 Warranty 1 Your i TECH AC DC 250 w
6. e lead connection Connection socket 5 pole standard TIG torch control lead foot pedal control lead M16x1 5 connection Shielding gas connection with yellow insulating cap for TIG un Connection socket welding current TIG TIG welding torch connection MMA Electrode holder or workpiece lead connection 7 Special Features 7 1 Special Features Definitions and Glossary Power DCTIG A S Hz AC TIG BALANCE Hz MIX TIG MIX TIG DC MMA 4 ue o sec BASE AMP spotArc INITIAL AMP IT FINAL AMP MODE Item Symbol Description 1 O mix tic MIX TIG In a cycle time that mixed with EN EP output AC TIG and EN output DC TIG 20 2 Electrode Dia selection 2 4 3 2 e 0 2 A 3 exo Spot Welding Mode 4 OQ pc DC converter output arc starting of AC TIG process MIX TIG process enn 5 Ba AC Wave Type AC Wave Control System 7 AC Freguency Control AC Balance Control Independent AC Amperage Control 8 m Memory with capacity of 10 sets parameters 7 2 AC Wave Controls Feature Effect on Bead Effect on Appearance Balance Control 51 799 EN Reduces balling Narrow bead with no action and helps visible cleaning Controls arc cleaning action Adjusting the maintain point EN of the AC wave controls the width of ILLA the etching zone surrounding the weld DD Bead N
7. elder is covered by a comprehensive 2 year return to base parts amp labour warranty 2 Improper use abuse or any attempt to repair the product by an unauthorised third party will invalidate any warranty claim 3 Any parts or consumables fitted or used in conjunction with the i TECH AC DC 250 which affect the equipment operation amp which are deemed by Inverter Fusion Ltd to be of inferior quality or not fit for that purpose will be regarded as abuse and will invalidate the warranty claim 4 The claimant is responsible for all carriage insurance and transportation costs in returning the product to Inverter Fusion Ltd 5 Upon receipt and inspection of the product it will be repaired or replaced at the discretion of Inverter Fusion Ltd In the event of a chargeable repair or a repair being required that is not considered to be a warranty issue the claimant will be contacted for further instructions 6 Following the completion of any authorised warranty claim work the product will be returned to the claimant at the cost of Inverter Fusion Ltd UK only 3 Safety There are inherent safety issues whilst welding so please ensure you read this manual carefully before commencing operations and follow the safety guidelines below to protect yourself and others from injury 1 Whilst welding ensure that you are working in a well ventilated area to avoid breathing in smoke amp fumes 2 Always wear a suitable welding mask helmet weld
8. ing gloves amp protective clothing whilst welding 3 Never look at the welding arc when not wearing a welding mask or helmet 4 Never touch the work piece with bare hands whilst it is still hot 5 When appropriate use a suitable welding screen or curtain to protect other people 6 Do not weld near flammable materials or combustible liquids or gases 7 Ensure the earth return is connected appropriately to prevent danger of electric shock 8 Never touch moving parts on the machine such as the fan and ensure all doors panels and covers are closed and in place during operation 9 Magnetic fields produced by the welder during operation may affect cardiac pacemakers pacemaker users should consult a doctor before welding 4 Technical Specifications Input Voltage 1 phase 220 240V 10 50 60Hz A oa 00000 rer jem 7 emm ANAA Insulation Class Protection Degree 5 Panel Layout contro C Item Symbol Description 1 2 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 6 Connections 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 workpiec
9. ize wire feed roller is roller fitted Incorrect feed roller MIG welding wire Check feed roller tension feed erratic Wire binding on reel Check wire will easily feed from roll Nozzle blocked or wrong Check correct size nozzle is fitted in size torch Erratic or Faulty electrode holder uncontrollable or bad earth return MMA welding arc connection 23 INVERTER FUSION LTD Heathpark Way Heathpark Industrial Estate Honiton Devon EX14 1BB 01404 549791 sales inverterfusion co uk www inverterfusion co uk Inverter Fusion Ltd welders
10. n socket for welding current 7 Workpiece lead connection 8 Foot Pedal 16 Operation 2 2 DC TIG Process DC TIG ACTIG MIX TIG DC MMA 5 Power BALANCE Warning MIX TIG w O AMP o sec BASE AMP J spotArc INITIAL AMP INAL a EN Item Symbol Description 1 Select the welding process DC TIG 2 Pulse ON OFF selection 2T AT holding mode selection Select and adjust the welding parameters Used to connect the foot pedal 17 Memory is availabe for all the process Operation 2 3 Process Power DC TIG 27 STD run Hz AU Men Warning MIX TIG E DC MMA PPS f sec Me o sec sec BASE AMP spotArc y INITIAL AMP FINAL AMP U og imd FL um AC WAVE ex 9 8 Item Symbol Description 1 Select the welding process AC TIG 20 2 Select the Dia of Tungster Electrode o 3 2 6 4 2 gt 3 Pulse ON OFF selection 4 ES 2T 4T holding mode selection 5 A Arc start position DC DC 6 E Select the AC wave type square wave or sine wave 18 Item Symbol Description prn j idi EI E Select and adjust the welding parameters 8 Push to select AC Freq AC Balance Independt EN EP Amperage for adjusting renore 9 eo Used to connect the
11. ote Set the AC Balance control for adequate arc Deep narrow m cleaning action at the sides and in front of the weld penetration No Visible Cleaning puddle AC Balance should be fine tuned according to how heavy or thick the oxides are Widar Bead and Increases balling cleaning action action of the electrode Amperage BALANCE Shallow penetration AC Frequency Control ki A ider pear and good penetration cleaning action Controls the width of the arc cone Increasing ideal for buildup work the AC Frequency provides a more focused arc N N with increased directional control Note Decreasing the AG Frequency softens the arc and broadens the weld puddle for a wider weld bead Cleaning Narrower bead for Narrower bead and fillet welds and cleaning action automated applications L Cleaning Independent AC Amperage Control More current in Narrow bead with no EN than EP visible cleaning Allows the EN and EP amperage values to be Deeper penetration set independently Adjusts the ratio of EN to and faster travel EP amperage to precisely control heat input speeds DD to the work and the electrode EN amperage controls the level of penetration while EP Visible Cleaning amperage dramatically effects the arc cleaning action along with the AC Balance control Wider baad and in EP than EN cleaning action Shallower penetration EN EP AMPERAGE LL eaning
12. pecial The pulse time applies to the main current The pulse time applies to the AC phase for phase AMP for pulses AC special PPS f Pulse break time 6 Hz Pulse break setting range 0 01 s to 9 99 s 0 01 s increments TIG pulses TIG AC Special The pulse break time applies to the The pulse break time applies to the secondary current phase AMP DC phase with AC special 7 BASE AMP Secondary current TIG pulse pause current Setting range 1 to 100 1 increments Percentage of the main current 12 Item Symbol Description 8 Down slope time TIG tA 0 00 s to 20 0 s 0 1 s increments The down slope time can be set separately for non latched and latched 9 r na amp End crater current TIG Setting range 1 to 100 9o 1 9o increments Percentage of the main current 10 T Gas post flow time TIG Setting ranges 0 1 s to 20 0 s 0 1 s increments 41 EI gt Select welding parameters button This button is used to select the welding parameters depending on the welding process and operating mode used SUNG 12 a Select welding parameters button This button is used to select the welding parameters depending on the welding Y process and operating mode used 13 8 Method of Operation Please ensure you follow these instructions whilst setting up your i TECH AC DC 250 Operation 1 1 MMA Connection Inthe MMA process the ideal connection type is Negative Output Connector
13. uld be carried out in a relatively dry environment with humidity of 90 or less 2 The temperature of the working environment should be 10 C to 40 C 3 Avoid welding in the open air unless sheltered from sunlight and rain and never let rain or water infiltrate the machine 4 Avoid welding in dusty areas or where corrosive chemical gases are present 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 9 3 Overheating protection If the machine has become overheated because of continuous welding for long periods the overheat LED will light up and the overheat protection system will begin working causing the machine to stop welding If this occurs there is no need to restart the machine once it has cooled down the LED will go out and welding can recommence 10 Maintenance 1 Always use and store your i TECH AC DC 250 in a clean dry environment 2 Regularly check that the cables and leads are in good condition 3 Regularly check that the gas hose is in good condition and has no cracks WARNING Improper use abuse or any attempt to repair the product by an unauthorised third party
14. will invalidate any warranty claim Any parts or consumables fitted or used in conjunction with the i TECH AC DC 250 which affect the equipment operation amp which are deemed by Inverter Fu sion Ltd to be of inferior quality or not fit for that purpose will be regarded as abuse and will invalidate the warranty claim 22 11 Troubleshooting 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 machine time to cool down Ensure The yellow LED overheated because the that the fan and output ducts are light is lit working duty cycle has free from obstruction and that there been exceeded is adequate ventilation space around the machine Check that the leads are fitted to the correct sockets and that the earth return is connected to the work piece No welding Welding leads are output incorrectly fitted MMA Welding Incorrect welding Check that the current setting is operation is current selected correct for the selected electrode erratic or not as Faulty or damp i Select an alternative electrode Check that the correct sized components are fitted and that the electrode holder is in good condition Ensure that there is a good earth return connection with the work piece Incorrect wire feed Check correct s
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