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Klutch MIG 140Si Owner's Manual

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MIG 140Si
Read carefully and understand all ASSEMBLY AND OPERATION
INSTRUCTIONS before operating. Failure to follow the safety rules and other
basic safety precautions may result in serious personal injury.
Item# 44725



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  Summary of Contents for Klutch MIG 140Si

  • Page 1 MIG 140Si OWNER’S MANUAL WARNING: Read carefully and understand all ASSEMBLY AND OPERATION INSTRUCTIONS before operating. Failure to follow the safety rules and other basic safety precautions may result in serious personal injury. Item# 44725...
  • Page 2: Intended Use

    Thank you very much for choosing a KLUTCH product! For future reference, please complete the owner’s record below: Model: _______________ Purchase Date: _______________ Save the receipt, warranty and these instructions. It is important that you read the entire manual to become familiar with this product before you begin using it.
  • Page 3: General Safety Rules

    WARNING: Read and understand all instructions. Failure to follow all instructions listed below may result in serious injury. CAUTION: Do not allow persons to operate or assemble this MIG 140Si until they have read this manual and have developed a thorough understanding of how the MIG 140Si works.
  • Page 4 1.3 Use of Your Welder Do not operate the welder if the output cable, electrode, torch, wire or wire feed system is wet. Do not immerse them in water. These components and the welder must be completely dry before attempting to use them. -Follow the instructions in this manual.
  • Page 5 respirator with air supply or remove the coating from the material in the weld area. -The fumes emitted from some metals when heated are extremely toxic. Refer to the material safety data sheet for the manufacturer’s instructions. -Do not weld near materials that will emit toxic fumes when heated. Vapors from cleaners, sprays and degreasers can be highly toxic when heated.
  • Page 6 MIG 140Si operation. Replace or repair damaged or worn parts immediately.  Store idle MIG 140Si. When MIG 140Si is not in use, store it in a secure place out of the reach of children. Inspect it for good working condition prior to storage and before re-use.
  • Page 7: Technical Specifications

    (with shielding gas) or with flux core wire. This unit uses standard 120VAC, 60 Hz input power on a 20A time delayed fuse or circuit breaker. The MIG 140SI features an infinite voltage control for fine turning of the welding arc. It also features a spot-weld timer, thermal overload protection and is spool gun ready.
  • Page 8 POWER INDICATOR LIGHT In the “OFF” position no power is being supplied to the torch. In the “ON” position power is supplied to the main transformer and control circuit. PROTECTION INDICATOR LIGHT If the duty cycle of the welder is exceeded, the internal temperature will exceed safe temperatures and the machine will shut down.
  • Page 9 ASSEMBLY 1. MIG TORCH ASSEMBLY 1.1 Locate the wing nut retaining bolt inside the front panel on the drive system. Loosen the retaining bolt. 1.2 Make note of the retaining groove on the back end of the MIG torch. Retaining Groove Retaining Bolt...
  • Page 10 2. OPTIONAL SPOOL GUN ASSEMBLY 2.1 This unit is set-up to accept the Quick Draw Spool gun (#44453) only. 2.2 The Quick Draw Spool Gun has three connection points at the back of the spool gun. (1) The gas connection is a slide on quick connector. (2) The weld power connection has a round ring connection.
  • Page 11: Installation

    2.6 Connect the gas connection quick connector to the gas connector (1) on the back panel of the wire compartment. 2.7 Connect the weld power connection to the bolt on the top of the MIG connector (2). 2.8 Connect the 5-Pin trigger connector to the 5-Pin receptacle on the front of the machine (3). 2.9 Make certain the SPOOL GUN/MIG TORCH SELECTOR on the front panel is switched into the SPOOL GUN position.
  • Page 12 3. INSTALL THE WIRE ROLLER - The wire roller has been factory installed. However, check to make certain the correct wire groove is in place to accommodate the size of wire you are using. Open the wire feed compartment. Adjust the drive roller according to the following steps, see following picture about the wire feeder structure: 3.1 Open the door to the welder drive compartment.
  • Page 13 4.2 Installing the wire Electrical Shock  Electric shock can kill! Always turn the POWER switch OFF and unplug the power cord from the AC power source before installing wire. NOTE: - Before installing, make sure that you have removed any old wire from the torch assembly. This will help to prevent the possibility of the wire jamming inside the gun liner.
  • Page 14 8 Inch 4 Inch 4.2.6 Setting the wire spool tension. a) Turn the spool of wire with one hand. b) Increase the spool tension by tightening (turn clockwise) the wing nut while turning the spool. Turn the spool while tightening the wing nut until the spool slows down and you feel a slight drag. Stop tightening the wing nut, you may need to repeat these steps until proper spool tension is achieved.
  • Page 15 4.2.16 Set the WIRE SPEED control to the middle of the wire speed range. 4.2.17 Straighten the MIG torch cable and pull the trigger in the gun handle to feed the wire through the torch assembly. When at least one inch of the wire sticks out past the end of the torch, release the trigger.
  • Page 16 6.2 Connect one end of the gas hose to the gas hose connection on the back of the welder. Use a wrench to snug up the connection. Connect the other end of the gas hose to the gas hose connection on the supplied regulator/flowgauge.
  • Page 17: Operation

    OPERATION High voltage danger from power source! Consult a qualified electrician for proper installation of receptacle at the power source. This welder must be grounded while in use to protect the operator from electrical shock. If you are not sure if your outlet is properly grounded, have it checked by a qualified electrician.
  • Page 18 6. DISTANCE FROM THE WORK PIECE - If the nozzle is held off the work piece, the distance between the nozzle and the work piece should be kept constant and should not exceed 1/4 inch or the arc may begin sputtering, signaling a loss in welding performance. 7.
  • Page 19 ELECTRIC SHOCK CAN KILL! To prevent ELECTRIC SHOCK, do not perform any welding while standing, kneeling, or lying directly on the grounded workpiece. 8.1 Moving the torch Torch travel refers to the movement of the torch along the weld joint and is broken into two elements: Direction and Speed.
  • Page 20 8.3 Welding position FLAT POSITION is easiest of the welding positions and is most commonly used. It is best if you can weld in the flat position if at all possible as good results are easier to achieve. HORIZONTAL POSITION Is performed very much the same as the flat weld except that angle B (see HOLDING THE TORCH) is such that the wire, directed more toward the metal above the weld joint is to help prevent the weld puddle from running downward while still allowing slow enough travel speed.
  • Page 21 falling into the nozzle. Angle B should be held at zero degrees so that the wire is aiming directly into the weld joint. If you experience excessive dripping of the weld puddle, select a lower heat setting. Also, the weave bead tends to work better than the stringer. 8.4 Multiple pass welding Butt Weld Joints When butt welding thicker materials, you will need to prepare the edges of the material to be joined by grinding a bevel on the edge of one or both pieces of the metal being joined.
  • Page 22 8.5 Spot welding There are three methods of spot welding: Burn-Through, Punch and Fill, and Lap. Each has advantages and disadvantages depending on the specific application as well as personal preference. 1. The BURN-THROUGH METHOD welds two overlapped pieces of metal together by burning through the top piece and into the bottom piece.
  • Page 23: Maintenance

    Maintain your KLUTCH MIG 140Si. It is recommended that the general condition of any KLUTCH MIG 140Si be examined before it is used. Keep your KLUTCH MIG 140Si in good repair by adopting a program of conscientious repair and maintenance. Have necessary repairs made by qualified service personnel.
  • Page 24: Troubleshooting

    TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION Unit Does Not Power Up Unit Is Not Plugged In Plug In Unit Input Power Circuit Breaker Not On Reset Input Power Circuit Breaker The Main Power Switch Is Not Working Replace Main Power Switch Protection Indicator Is On The internal temperature is too high.
  • Page 25: Diagram & Parts List

    DIAGRAM & PARTS LIST Page of 27...
  • Page 27: Warranty

    WARRANTY EFFECTIVE JULY 1, 2014 LIMITED WARRANTY This warranty applies to the original purchaser and is subject to the terms and conditions listed below. This Limited Warranty is for new equipment sold after the above date, providing coverage for defects in material and workmanship at the time it is shipped from the factory.

This manual is also suitable for:

Mig/stick 220siMig 140si 44725