R-Tech TIG251 Operation Instructions Manual Download Page 10 | Manualshive

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R-Tech TIG251 Operation Instructions Manual Download Page 10

10

Connections for STICK MMA (SMAW) Welding

Fig 3

1.

Positive power con

Connect the electrode holder by inserting and twisting until tight

2. Not used in MMA mode

3.

Negative power connector -

Connect the earth lead to by inserting and twisting until tight and the earth clamp to
work/bench.

4. Not used in MMA mode

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Summary of Contents for TIG251

Page 1: ...www r techwelding co uk email sales r techwelding co uk Tel 01452 733933 Fax 01452 733939 TIG251 AC DC INVERTER TIG WELDER OPERATION INSTRUCTIONS Version 2014 1...

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Page 3: ...on data plate at rear of machine Product TIG251 Serial No ___________________________________ Date of Purchase _____________________________ Where Purchased _____________________________ Whenever you...

Page 4: ...protected from overloads beyond the output ratings and duty cycle as per machine specifications with thermostat protection of the output coils and rectifiers Welding Capability Duty Cycle The R Tech...

Page 5: ...articles towards the welder An abundance of conductive material can cause plant failure Stacking This machine cannot be stacked Transport Unloading Never underestimate the weight of equipment never mo...

Page 6: ...these contributing factors in mind installing equipment as per following instructions should minimize problems 1 Keep the welder input power lines as short as possible and enclose as much of them as...

Page 7: ...ot touch electrically live parts The TIG251 Inverter TIG Welder requires a 240V 50 60Hz supply It requires a 32A supply for TIG and MMA welding It comes with a 3 metre mains cable attached Connect wir...

Page 8: ...s etc 3 Fuse Holder 5A fuse for water cooling socket 4 Mains input cable Fit required plug as per your electrical installation 5 Gas input connector Connect input gas hose ensuring connection is tight...

Page 9: ...ting until tight 4 Torch control socket 7 Pin Connect torch control plug To avoid a High Frequency shock keep the TIG torch in good condition and replace if any of the insulation is damaged Connect th...

Page 10: ...ve power connector Connect the electrode holder by inserting and twisting until tight 2 Not used in MMA mode 3 Negative power connector Connect the earth lead to by inserting and twisting until tight...

Page 11: ...tment This sets pulse amperage and must be set above the base main current amperage If set to zero pulse welding is disabled 3 Pulse frequency adjustment This sets how often pulse will occur 0 5 25hz...

Page 12: ...machine will open gas valve to start flow of shield gas after a 0 5 seconds pre flow time to purge air from torch hose the welding output of machine will be turned on and the arc will be started Afte...

Page 13: ...machine will now decrease the welding output current to finish min in down slope time set Once at finish min output you can release the TIG torch switch to end weld the gas post flow will continue to...

Page 14: ...t more penetration and the machine will spend more time penetrating work negative part of cycle When welding dirty contaminated material more cleaning may need to be selected the machine will spend mo...

Page 15: ...n be dangerous Keep your head out of fumes gases produced from welding Use ventilation or exhaust to remove fumes gases from breathing zone and general area WARNING WELDING SPARKS can cause fire or ex...

Page 16: ...setting 10 Adjust Pulse freq to desired setting 11 If welding on AC set AC Frequency to 100Hz and SP to 50 12 Press the TIG torch switch to start welding Notes When welding with Pulse the pulse ampera...

Page 17: ...re welding Tips for AC Welding The TIG251 offers two significant advantages over conventional silicon rectifier SCR transformer power sources 1 The AC square wave balance SP can be set to a higher per...

Page 18: ...SHOCK CAN KILL When machine is switched to MMA mode output terminals are always live take care and do not touch electrode and earth by person at same time otherwise electric shock will occur The foot...

Page 19: ...orch and cables in good condition 4 Clean air vents to ensure proper air flow and cooling 5 The fan motor has sealed bearings which requires no maintenance Troubleshooting Service repair should only b...

Page 20: ...tput Power light is lit Gas at torch end when trigger pressed Check torch condition possible break in torch power cable replace torch Machine keeps overheating Warning light is lit on machine Check if...

Page 21: ...r If welding at high currents are required try switching to fixed mains supply or Set AC balance SP to 50 position Arc Flutters when TIG welding 1 Tungsten electrode may be too large in diameter for t...

Page 22: ...points with clean dry low pressure air line HF PCB faulty Contact R Tech for repair MMA Stick welding problems Stick electrode blasts off when arc is struck Welding current set to high reduce amperage...

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