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VIPER 120 SYNERGIC
Operating Manual | KUMJRVM120
Please read and understand this instruction manual carefully
before the installation and operation of this equipment.
© UNIMIG 2019

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Summary of Contents for Unimig VIPER 120 SYNERGIC

  • Page 1 VIPER 120 SYNERGIC Operating Manual | KUMJRVM120 Please read and understand this instruction manual carefully before the installation and operation of this equipment. © UNIMIG 2019...
  • Page 2: Warranty

    • New product will not be supplied unless Welding Guns Of Australia PTY LTD has inspected product returned for warranty and agrees to replace product. • Product will only be replaced if repair is not possible • Please view full Warranty term and conditions supplied with machine or at www.unimig.com.au/warranty-registration/ or at the back of this manual. REGISTER YOUR MACHINE ONLINE TO RECEIVE AN ADDITIONAL 6 MONTHS ON YOUR WARRANTY Visit unimig.com.au/warranty-registration/ to register your machine.
  • Page 3: Table Of Contents

    VIPER 120 SYNERGIC FEATURES VIPER 120 SYNERGIC DATA MACHINE PARTS LAYOUT MIG WITH GAS INSTALLATION GASLESS MIG INSTALLATION WIRE INSTALLATION & SET UP GUIDE MIG WELDING GUIDE MIG WELDING TROUBLE SHOOTING MIG WIRE FEED TROUBLE SHOOTING WARRANTY TERMS VIPER 120 SYNERGIC MIG Welder | 3...
  • Page 4: Safety

    • Measures should be taken to protect people in or near the surrounding working area. Use protective screens or barriers to protect others from flash,glare and sparks; warn others not to watch the arc. 4 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 5 Hot parts. Items being welded/cut generate and hold high heat and can cause severe burns. Do not touch hot parts with bare hands. Allow a cooling period before working on the welding/cutting gun. Use insulated welding gloves and clothing to handle hot parts and prevent burns. VIPER 120 SYNERGIC MIG Welder | 5...
  • Page 6 TROUBLE SHOOTING Caution: Only qualified technicians are authorized to undertake the repair of this welding/cutting equipment. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed in this manual. 6 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 7 Welding Guns Of Australia PTY LTD, authorised representatives or agents of Welding Guns Of Australia PTY LTD will not be liable or responsible for the loss of any gas. VIPER 120 SYNERGIC MIG Welder | 7...
  • Page 8: Viper 120 Synergic Features

    VIPER 120 SYNERGIC FEATURES FEATURES OVERVIEW The VIPER 120 SYNERGIC is the easiest MIG welder to get you up and running. Simply • 10 AMP Plug set your wire size, adjust the Synergic power knob and the VIPER 120 SYNERGIC •...
  • Page 9: Viper 120 Synergic Data

    Mild Steel, Stainless Steel WARRANTY (Years) MIG SPECIFICATIONS 40-120A MIG WELDING CURRENT RANGE MIG DUTY CYCLE @ 40°C  10% @ 120A MIG WIRE SIZE RANGE 0.6-0.9mm MIG WIRE SPOOL SIZE MIG WELDING THICKNESS RANGE DRIVE ROLLER SIZE VIPER 120 SYNERGIC MIG Welder | 9...
  • Page 10: Machine Parts Layout

    3. SYNERGIC Control Knob 4. Positive Output 5. Polarity Cable 6. Negative Output 7. Direct Connect MIG Torch 8. Power Cable 9. Power Switch 10. Gas Inlet 11. Wire Spool Holder 12. Wire Feed Assembly 10 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 11: Mig With Gas Installation

    Push the wire through approx 150mm. tube into the drive roller. NOTE: VIPER MIG 120 is not suitable to weld Aluminium as it is a Synergic Welding Machine programmed for Solid Mild Steel wire and VIPER 120 SYNERGIC MIG Welder | 11 Flux Cored (Gasless) wires only.
  • Page 12 (10) Fit the correct size contact tip over the wire and (11) Fit the gas nozzle to the torch head. flow to 8-10 L/min fasten tightly into the tip holder. (13) Select wire size, then adjust synergic control knob to suit work piece. 12 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 13: Gasless Mig Installation

    (5) Feed wire over the drive roller into the outlet guide Flux Core wire left hand thread ) Feed the wire through the inlet guide tube, Push the wire through approx 150mm. tube into the drive roller. VIPER 120 SYNERGIC MIG Welder | 13...
  • Page 14 (9) Fit the correct size contact tip over the wire and (10) Fit the gas nozzle to the torch head. (11) Select wire size, then adjust synergic control knob fasten tightly into the tip holder. to suit work piece. 14 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 15: Wire Installation & Set Up Guide

    If this happens increase the pressure on the tension at the drive rollers, increase the tension if it slips. spring inside the spool holder assembly using the tension adjustment screw. VIPER 120 SYNERGIC MIG Welder | 15...
  • Page 16: Mig Welding Guide

    100 times per second, making the arc appear constant to the human eye. MIG Circuit Diagram 4. Wire Feeder - 5. Wire Spool - 6. Gas MIG Torch - Work Piece - Power Source - 16 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 17 The heat of the arc melts the end of the wire slightly as it feeds towards the base metal VIPER 120 SYNERGIC MIG Welder | 17...
  • Page 18 10° Travel direction Travel direction Travel direction Wire pointed ahead of bead Wire pointed back into bead Flat even weld profile light Narrower weld profile Narrow higher weld profile penetration even penetration more penetration 18 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 19 Too long stick out will cause an unstable arc, lack of penetration, lack of fusion and increase spatter. Too long Too short Normal stick out 5-10mm Even arc, good penetration Unstable arc, spatter, over Unstable arc, spatter, poor even fusion, good finish heat contact tip penetration and fusion VIPER 120 SYNERGIC MIG Welder | 19...
  • Page 20 The correct travel speed keeps the arc at the leading edge of the weld pool allowing the base metal to melt sufficiently to create good penetration, fusion and wetting out of the weld pool producing a weld deposit of good quality. Correct Travel Speed Even shaped bead Good toe fusion Good side wall fusion Good penetration 20 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 21 Argon Co2 mixed gas. Argon Co2 mix gas offers better weld ability for thin metals and has a wider range of setting tolerance on the machine. Argon 80% Co2 20% is a good all round mix suitable for most applications. Argon Co2 Penetration Pattern for Steel VIPER 120 SYNERGIC MIG Welder | 21...
  • Page 22 QTY2 QTY2 PGN15TAP Tapered Nozzle QTY2 PGN15SPOT Spot Nozzle VIPER 120 SYNERGIC ADDITIONAL TORCH PARTS Part-No Description GNS15 Shroud Spring SNK15 Swan Neck Assembly These parts are manufactured in China and are offered as replacement parts suitable for “BINZEL®” style torches.
  • Page 23: Mig Welding Trouble Shooting

    Not enough heat input Select a higher voltage range and /or adjust the wire speed to suit Reduce travel speed Remove materials like paint, grease, oil, and dirt, including mill scale from base metal. Contaminated base metal VIPER 120 SYNERGIC MIG Welder | 23...
  • Page 24: Mig Wire Feed Trouble Shooting

    Remove the spool untangle the wire or replace the wire Wire crossed over on the spool or tangled Contaminated MIG wire Use clean dry rust free wire. Do not lubricate the wire with oil, grease etc 24 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 25: Warranty Terms

    Welding Guns Of Australia Pty Ltd (‘Us’, ‘We’) warrants that the following products under UNIMIG, UNI-TIG, UNI-PLAS, UNI-FLAME, TECNA, T&R, HIT- 8SS & ROTA, supplied by Us and purchased by you from an Authorised UNIMIG, UNI-TIG, UNI-PLAS, UNI-FLAME, TECNA, T&R, HIT-8SS & ROTA Dealer throughout Australia are free of Material and Faulty Workmanship defects except for those products listed under ‘Warranty Exclusions’.
  • Page 26 To the extent permitted by law, our total liability for loss or damage of every kind related to the product in any way whatsoever is limited to the amount paid to the retailer by you for the product or the value of the product. No responsibility will be taken for products lost, damaged or mislaid whilst in transit. 26 | VIPER 120 SYNERGIC MIG Welder Manual...
  • Page 27 • Failure or any breakage caused by overload, dropping or abusive treatment or use by the customer • Repair, modifications or other work carried out on the product other than by an Authorised UNIMIG, UNI-TIG, UNI-PLAS, UNI-FLAME, TECNA, T&R, HIT- 8SS &...
  • Page 28 Welding Guns Of Australia Pty Ltd ABN: 14 001 804 422 PO Box 3033, Lansvale NSW 2166, AUSTRALIA 112 Christina Rd, Villawood, NSW 2163 Phone: 1300 864 644 Fax: (02) 9780 4244 Email: sales@unimig.com.au www.unimig.com.au © Welding Guns Of Australia PTY LTD 2018...

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