WELDPRO MIG155GD Operator's Manual
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WELDPRO MIG155GD Operator's Manual

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MIG155GD
LINLONG LIMITED
Operator's Manual
www.weldpro.com

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  • Page 1 MIG155GD LINLONG LIMITED Operator’s Manual www.weldpro.com...
  • Page 2 Tel:651 342-1459 Technicalsupport: 651 3292686...
  • Page 3 STOP...
  • Page 4 Introduction Thank you for purchasing the Weldpro MIG155GD welder. This welder is designed and built using the very best quality components to afford a great welding experience and great performance. This manual contains the description of the hardware and the operating instructions of the equipment. For your safety and that of others, please read this manual carefully.

  • Page 5: Table Of Contents

    CONTENTS 1 Weldpro Safety........................2 PRODUCT DESCRIPTION....................... 3 TWO YEAR WARRANTY......................4 TECHNICAL PARAMETERS....................5 GENERAL WELDING FACTS ....................6 ELECTRICAL VOLTAGE ......................7 INSTALLATION ........................8 OPERATION .......................... 9 Daily checking........................10 TROUBLESHOOTING ......................

  • Page 6: Weldpro Safety

    Weldpro Safety...
  • Page 7 Thank you for using Weldpro arc welding and cutting equipment. We ask you to work like a weld-pro and weld-pros weld and cut safely. Please read and comply with the sample safety procedures outlined in this guide and the equipment Owner's Manual.
  • Page 8 1. General Safe Practices Become trained and read the instructions before working on the machine or welding or cutting. Read and understand the Safety Data Sheets (SDSs) and the manufacturer's instructions for adhesives, coatings, cleaners, consumables, coolants, de- greasers, fluxes, and metals. Wear approved safety glasses with side shields under your welding helmet or face shield and at all times in the work area.
  • Page 9 Protect yourself from electric shock by insulating yourself from work and ground. Use non-flammable, dry insulating material if possible, or use dry rubber mats, dry wood or plywood, or other dry insulating material big enough to cover your full area of contact with the work or ground and watch for fire.
  • Page 10 Welding sparks can cause fires. Have a fire extinguisher nearby and have a trained fire watcher ready to use it. After completion of work, inspect area to ensure it is free of sparks, glowing embers, and flames. Do not weld on containers that have held combustibles, or on closed containers such as tanks, drums, or pipes unless they are properly prepared according to AWS F4.1 and AWS A6.0 (see Safety Standards in Section 9).
  • Page 11 3. Plasma Arc Cutting Hazards Cutting sparks can cause fire or explosion. Do not cut near flammable material or where the atmosphere can contain flammable dust, gas, or liquid vapors (such as gasoline). Move flammables at least 35 feet (11 meters) away or protect them with flame-proof covers (see NFPA 51B listed in Section 9).
  • Page 12 Electric shock from torch or wiring can kill. Wear dry insulating gloves. Do not wear wet or damaged gloves. Do not touch live electrical parts. Do not use worn, damaged, undersized, or repaired cables. Protect yourself from electric shock by insulating yourself from work and ground. Use non-flammable, dry insulating material if possible, or use dry rubber mats, dry wood or plywood, or other dry insulating material big enough to cover your full area of contact with the work or ground.
  • Page 13 Use a ventilating fan to remove fumes from the breathing zone and cutting area. If adequacy of ventilation or exhaust is uncertain, have your exposure measured and compared to the Threshold Limit Values (TLV) in the Safety Data Sheet (SDS). Arc rays can burn eyes and skin.
  • Page 14 4. Special Situations & Equipment Confined spaces can be hazardous. Confined spaces are areas which lack room for full movement and often lack ventilation, such as storage tanks, vats, tunnels, boilers, pipes, hold of a ship, corners of a room, near a ceiling or floor corner, or in a pit. Gases can collect and form dangerous concentrations.
  • Page 15 Electric and magnetic fields (EMF) can affect Implanted Medical Devices. Wearers of Pacemakers and other Implanted Medical Devices should keep away. Implanted Medical Device wearers should consult their doctor and the device manufacturer before going near arc welding, spot welding, gouging, plasma arc cutting, or induction heating operations. Hot parts can burn.
  • Page 16 measures for persons wearing medical implants have to be taken. For example, restrict access for passers−by or conduct individual risk assessment for welders. All welders should use the following procedures in order to minimize exposure to EMF fields from the welding circuit: Keep cables close together by twisting or taping them or using a cable cover.
  • Page 17 8. Lens Shade Selector Guide Suggested* Shade Minimum Protective Operation/Process Electrode Size in. (mm) Arc Current (Amperes) No. (Comfort) Shade — Less than 3/32 (2.5) Less than 60 Shielded metal arc 3/32−5/32 (2.5−4) 60−160 welding (SMAW) 5/32−1/4 (4−6.4) 160−250 More than 1/4 (6.4) 250−550 —...

  • Page 18: Product Description

    30%. The MIG155GD is a self-shielding welding machine that can be used for MIG as well as for flux-cored arc welding. It is equipped with a unique electrical reactor, which can precisely control the short-circuit transfer and mixed transfer modes, this way it shows better performance than other machines.

  • Page 19: Two Year Warranty

    Weldpro will not be responsible in the event of a product failure, for lost time in operation or use of said product. Rather it will honor solely the product itself only.

  • Page 20: Technical Parameters

    TECHNICAL PARAMETERS Model MIG155GD Parameters 1 phase 1 phase Supply voltage (V) 115V±15% 230V±15% Frequency (Hz) MIG: 35.7 MIG: 25.4 Rated input current (A) MMA: 40 MMA: 26.7 No-load voltage (V) MIG: 30-120 MIG: 30-155 Output current (A) MMA: 30-110 MMA: 30-140 MIG: 15.5-20...

  • Page 21: General Welding Facts

    Shielding the weld area during welding is very important to a good weld. Three of the most popular types of welding are offered with the MIG155GD. They will be briefly described here. The MIG155GD is capable of performing MIG welding, Flux Core welding, and MMA welding.

  • Page 22: Electrical Voltage

    60hz. Your new MIG155GD is a DC (direct current welder) which means the current or (amperage) travels only in one direction. However, you have the ability to manually change that direction as needed for the choice of three welding types available with the MIG155GD.

  • Page 23: Installation

    The MIG155GD can be used for both MIG (which is solid wire with shielding gas) and flux-cored arc welding. Please see below the MIG welding installation diagram. In flux-cored arc welding mode the gas cylinder does not need to be connected, however the polarity must be reversed.
  • Page 24 • Installation diagram in MMA mode (AKA, Arc welding, Stick welding.) Switch over the front panel toggle to the MMA position. No gas is needed. Connect torch to “plus” and ground to “minus” to run your MMA in “reverse polarity, electrode positive. DCEP Power supply round clamp Work piece...
  • Page 25 • Installation of nozzles and contact tips Thread off your nozzle. Under that nozzle will be the contact tip, be sure to unscrew that and remove it before you feed your new wire in. Once the new wire has been fed through slide the contact tip back over the wire and gently thread it back on, being sure not to over tighten it.
  • Page 26 Connecting the torch cable is a relatively simple straightforward operation with only a few things to keep in mind. The first is, inside the cavity where your reel of wire is stored and your drive motor mechanism is located, slightly to the right of your drive roller mechanism as you look at it, you will see the brass housing (FIG2.6) that you’re torch cable will slide into.
  • Page 27 *Tips about drive rollers: You'll see two different rollers provided. One will be on the machine and the other will be in a bag. If you look very closely at the grooves, one has teeth and one does not. The one with the teeth is called the knurled drive roller (FIG3) and is designed to be used with your flux core wire.
  • Page 28 7. The W Weldpro MIG machines have a special function that auto senses welding current. When you pull the trigger wire will feed slowly for 4 seconds, if the machine does not sense any welding current, it will speed up to full speed, that will help you feed your new roll of wire.
  • Page 29 • • Installation of regulator to gas tank If you choose to weld with C25 gas and solid core wire now will be the time to connect your regulator to your C25 welding gas tank. Thread the regulator on to the gas cylinder snugging it gently and remembering these are brass connectors. Take the supplied hose connect one end of it to your gas regulator.
  • Page 30 SET UP FOR SPOOL GUN WELDING The WELDPRO MIG155GD is set up to use a spool gun which allows for easy feeding of aluminum wire to expand your welding capabilities. This is an optional accessory and can be purchased separately from WELDPRO.
  • Page 31 3. Remove the thumb screw and spring tensioner that holds the wire spool on (FIG. J1). Place wire spool on spindle and replace the thumb screw with spring tensioner and tighten till the point that the spool has some tension on it. Loosen the Brass Tensioner Thumb Screw (FIG.

  • Page 32: Operation

    OPERATION 1 Front panel layout The values of the adjustment knob are indicated on the front panel of the machine. The pictures in this manual are for reference only. The actual product may be different. • Front panel Voltage adjustment knob Power indicator light Fault indicator Current adjustment knob...
  • Page 33 2 Operating instructions • Turn on the power switch, the power indicator light comes up and the fan starts running. • Set the welding current according to the requirements of the welding work. • Usually, the necessary welding current for the electrode welding is as follows: Shielding Gas 24ga 22ga...

  • Page 34: Daily Checking

    Daily checking WELDING TORCH Component To check Remarks Check if the torch is properly connected and if there are There may be an air leak any deformations. Air vent Check if it produces splatter. The welding torch might burn out (use spatter resistant materials) The screw thread of the welding Check if the torch is properly connected.

  • Page 35: Troubleshooting

    TROUBLESHOOTING Note: The following operations must be carried out by a qualified electrician with valid certifications. Before maintenance, it is suggested you verify qualification. Fault description Measures to take Make sure that the power switch is turn on. Check if the power network works well. The heat variable resistors on the control panel is damaged.
  • Page 36 LINLONG LIMITED www.weldpro.com...

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