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Summary of Contents for R-Tech MTS251TFT
- Page 1 Tel: 01452 733933 Fax 01452 733939 R-TECH MTS251TFT DIGITAL MIG - MMA - DC TIG WELDER OPERATION INSTRUCTIONS Version 2023-12-V1...
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Page 3: Table Of Contents
Index Page Introduction Safety Precautions Electrical Installation Technical Specifications Connections Controls & Settings MIG EASY SETUP MIG Manual Mode DC TIG EASY SETUP DC TIG Manual Mode inc. spot/tack Memory Storing MMA STICK EASY SETUP MMA STICK Manual Mode Fault Finding Safety Information... - Page 4 Thank you for selecting the R-Tech MTS251-TFT Digital MIG, DC TIG & MMA Welder. The MTS251-TFT has many benefits over traditional welders, including colour screen with easy navigation & EASY SETUP, 20 memory stores, MIG welding with optional spool on gun, DC HF TIG pulse welding with spot and tack functions, remote foot pedal option and an industrial 35% duty cycle.
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Page 5: Introduction
Welding Capability – Duty Cycle The R-Tech MTS251-TFT Digital is rated at 250 Amps at 35% duty cycle on a ten minute basis. If the duty cycle is exceeded a thermal protector will shut machine off until the machine cools. -
Page 6: Safety Precautions
Safety Precautions Read entire section before starting installation. Warning! Electric Shock can kill – Only qualified personnel should perform this installation. Turn off input power at the fuse box before working on this equipment. Do not touch electrically live parts. Always connect the machine to an earthed mains supply as per national recommended standards. -
Page 7: Electrical Installation
Electrical installation WARNING ELECTRIC SHOCK CAN KILL Electric Shock can kill – Only qualified personnel should perform this installation. Turn off input power at the fuse box before working on this equipment. Do not touch electrically live parts. Always connect the machine to an earthed mains supply as per national recommended standards. - Page 8 Electrical installation cont. Input Connections Make sure the voltage, phase and frequency of input power is as specified on machine rating plate located at rear of machine. Have a qualified electrician provide suitable input power as per national electrical codes. Make sure machine is earthed / grounded.
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Page 9: Technical Specifications
Technical specifications Input 240V AC 50/60Hz Input amperage 32A Gross weight 28 KG Dimensions 470H x 280W x 640L (mm) Insulation IP21S MIG Operation Current range DC 30A - 250A No load voltage Duty cycle 35% @ 250A, 60% @200A MIG EASY SETUP - Programs for Wire Type - Mild steel .6mm 0.8, 1, 1.2, 1.5, 2mm... - Page 10 Technical specifications DC TIG Operation Current range DC 10A - 250A No load voltage Duty cycle 35% @ 250A, 60% @200A Arc starting modes HF, Lift Trigger modes Manual mode 2T,4T,4TS, REMOTE PEDAL,2T+F, 4T+F Trigger modes EASY SETUP 2T,4T, REMOTE PEDAL, 2T+F, 4T+F TIG EASY SETUP DC - Programs for Metal type Steel...
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Page 11: Connections
Connections Front panel connections MIG euro torch connector MIG Mode - Spool Negative power con- Quick release gas Positive power gun torch. nector torch connector connector. MIG Spool on gun for TIG torch connector TIG mode - 7 pin MIG mode using gas MIG mode gasless socket for TIG connect earth lead... - Page 12 Rear panel connections cont.. Extra earth connection Extra earth connection, used if you experience local interference (not normally used)
- Page 13 Wire feed assembly, wire reel holder & gasless wire 1 - Wire reel retainer. Screw in to retain wire roll adaptor onto wire reel. 2 - Wire Feed Drive Assembly. To change roller size release retaining screw, remove roller and turn roller around and slide onto shaft making sure the right size groove is in line with wire and refit re- taining screw.
- Page 14 Front panel Digital Colour Screen Easy to navigate menu system - on previous digital machines, the settings for ALL modes were on one screen, now you only see settings on screen for the mode you are using. EASY SET mode - pre-programmed weld settings for MIG - DC TIG & MMA 1 - AMPS / Wire speed control knob MIG mode controls wire feed speed / trim MMA mode controls welding amperage...
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Page 15: Controls & Settings
MMA (STICK) in Manual mode MIG EASY MODE R-Tech Easy mode takes the guesswork out of MIG welding. You normally had to enter wire feed speed and welding voltage before beginning to weld on manual welders, we have done this for you. - Page 16 MMA EASY MODE R-Tech Easy mode takes the guesswork out of MMA welding. You normally had to enter welding amperage , we have done this for you. You simply select the following from easy to understand screen. Electrode diameter and type being used Material thickness The machine will set the required welding amperage.
- Page 17 DC TIG EASY MODE R-Tech Easy mode takes the guesswork out of TIG welding. You normally had to set the welding amperage before beginning to weld on manual welders, we have done this for you. You simply select the following from an easy to understand screen.
- Page 18 Operation When you first turn on machine you will see the following main function select screen. Turn the middle selector knob to scroll through settings available below, then press in knob to select. MIG Ar95/C5 - MIG welding with MIG gas - most common. MIG Ar80/C20 - MIG welding with industrial high thickness MIG gas.
- Page 19 MIG Operation - EASY SET Once you have selected required MIG mode you will see a screen as below. This is the MIG manual screen. Now press in the EASY SET button and the following screen will be shown Use the middle knob to cycle through settings, when a setting is highlighted in red, use the left control knob to change setting.
- Page 20 MIG Operation - manual mode Once you have selected required MIG mode you will see a screen as below. This is the MIG manual screen. Use the middle knob to cycle through settings, when a setting is highlighted in red, use the left control knob to change setting.
- Page 21 The screen below shows all the advanced MIG manual options. Use the middle selector to cycle though the available modes, selected mode is highlighted in red. Use the left knob to adjust value. For most common MIG welding we suggest setting all to zero apart from Burnback 0.2s and post flow 0.2s.
- Page 22 Once you have selected DC TIG mode, Press EASY SET and you will see a screen as below. R-Tech Easy mode takes the guesswork out of TIG welding. You normally had to enter desired amperage to weld on manual welders, we have done this for you.
- Page 23 DC MANUAL MODE R-Tech DC TIG manual mode gives you full control over every weld parameter available. DC MANUAL - HOME SCREEN You can select the following from menu by turning middle selector to highlight in RED. Then you adjust the settings by turning left control knob.
- Page 24 DC MANUAL MODE cont.. PULSE / SPOT / TACK Options Off - No pulse settings in main weld settings screen On - Pulse settings shown in main weld settings screen, These being:- Pulse time % - Sets pulse time (width) as a percentage of total pulse Pulse frequency - from 0.1Hz to 150Hz, Pulse Amps % - Sets base amps as a percentage of main amps.
- Page 25 DC TIG - with pulse Pre-flow Gas Adjustable between 0.0 - 10 seconds Start amps Adjustable between 10A - 250A Up slope Adjustable between 0 - 10 seconds Down slope Adjustable between 0 - 10 seconds End amps Adjustable between 10A - 250A Post flow gas time Adjustable between 0 - 10 seconds Pulse time...
- Page 26 DC SPOT / TACK Modes Tack welding allows you to produce one single fast tack weld for a selected time when trigger is pressed. You can also set a stitch time which will then set a delay time after first tack and then another tack weld will be started and this will be repeated for as long as trigger is pressed.
- Page 27 DC TACK/SPOT Mode cont.. SPOT welding allows you to product one single spot weld for a selected time when trigger is pressed. You can also set a stitch time which will then set a delay time after first spot and then another spot weld will be started and this will be repeated for as long as trigger is pressed.
- Page 28 Memory store SAVE function 20 memory stores are available so you can save your preferred weld settings. To access program save menu, press the SAVE button for 3 seconds. The following screen will appear. DC TIG - NO PULSE Use the middle control knob to move to required save slot. Now press and hold the SAVE button for 3 seconds then release, the saved program will turn YELLOW signalling the program has now been saved.
- Page 29 DC STICK in MANUAL mode DC MMA EASY MODE R-Tech EASY SET mode takes the guesswork out of MMA welding. You normally had to enter all weld settings before beginning to weld on manual welders, we have done this for you.
- Page 30 Selecting EASY SET STICK MMA parameters Use the middle control knob to move between each setting - once setting is highlighted in RED turn left control knob to adjust. Once you have entered all 3 parameters for weld the recommended welding amperage will be shown. To trim amperage turn middle knob so amperage is in RED , use left knob to adjust trim.
- Page 31 MMA - STICK WELDING MANUAL MODE TO ENTER MANUAL MODE - Turn off EASY SET Now select electrode type Standard or Cellulose. Adjust amperage required. After setting home screen settings as required, now select icon as shown below and press in middle button.
- Page 32 Allow machine to cool down and check fan vents for obstructions E02 - Overcurrent Reset machine and if problem persists contact R-Tech support team. E05 - Shorted Trigger This will show after the torch trigger or foot pedal has been pressed and the arc has not been established after 4 seconds.
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