SEALEY SUPERMIG140 Supermig Welder Machine Instruction Manual

SEALEY SUPERMIG140 Supermig Welder Machine

SAFETY

ELECTRICAL SAFETY
WARNING
It is the user’s responsibility to read, understand and comply with the following: You must check all electrical equipment and appliances to ensure they are safe before using. You must inspect power supply leads, plugs and all electrical connections for wear and damage. You must ensure the risk of electric shock is minimized by the installation of appropriate safety devices. An RCCB (Residual Current Circuit Breaker) should be incorporated in the main distribution board. We also recommend that an RCD (Residual Current Device) is used with all electrical products. It is particularly important to use an RCD together with portable products that are plugged into an electrical supply not protected by an RCCB. If in doubt consult a qualified electrician. You may obtain a Residual Current Device by contacting your Sealey dealer. You must also read and understand the following instructions concerning electrical safety.

The Electricity At Work Act 1989 requires all portable electrical appliances, if used on business premises, to be tested by a qualified electrician, using a Portable Appliance Tester (PAT), at least once a year.

1.  The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of the appliance, and the safety of the appliance operator. If in any doubt about electrical safety, contact a qualified electrician.
2.  Ensure the insulation on all cables and the product itself is safe before connecting to the mains power supply. See 1.1.1. & 1.1.2. above and use a Portable Appliance Tester (PAT).
3.  Ensure that cables are always protected against short circuit and overload.
4.  Regularly inspect power supply leads, plugs and all electrical connections for wear and damage and especially power connections, to ensure that none is loose.
5.  Important: Ensure the voltage marked on the product is the same as the electrical power supply to be used and check that plugs are fitted with the correct capacity fuse.
6.  DO NOT pull or carry the powered appliance by its power supply lead.
7.  DO NOT pull power plugs from sockets by the power cable.
8.  DO NOT use worn or damaged leads, plugs or connections. Immediately replace or have repaired by a qualified electrician. A U.K. 3 pin plug must be fitted according to the following instructions. (UK only – see diagram below). Ensure the unit is correctly earthed via a three-pin plug.
   •  Connect the green/yellow earth wire to the earth terminal ‘E’.
   •  Connect the brown live wire to live terminal ‘L’.
   •  Connect the blue neutral wire to the neutral terminal ‘N’.
   •  After wiring, check that there are no bare wires, that all wires have been correctly connected, that the cable external insulation extends beyond the cable restraint and that the restraint is tight.
9.  Cable extension reels. When a cable extension reel is used it should be fully unwound before connection. A cable reel with an RCD fitted is recommended since any product which is plugged into the cable reel will be protected. The section of the cable on the cable reel is important and should be at least 1.5mm², but to be absolutely sure that the capacity of the cable is suitable for this product and for others that may be used in the other output sockets, we recommend the use of 2.5mm².section cable.

WARNING
Be very cautious if using a generator to power the welder. The generator must be self-regulating and stable with regard to voltage, waveform and frequency. The output must be greater than the power consumption of the welder. If any of these
requirements is not met the electronics within the welder may be affected.
NOTE:
The use of an unregulated generator may be dangerous and will invalidate the warranty on the welder.

WARNING
The welder may produce voltage surges in the mains supply which can damage other sensitive equipment e.g. computers. To prevent this from happening, it is recommended that the welder is connected to a power supply that does not feed any sensitive equipment

GENERAL SAFETY

• DANGER! Unplug the welder from the mains power supply before performing maintenance or service.
• Keep the welder and cables in good working order and condition. Take immediate action to repair or replace damaged parts.
• Use genuine parts and accessories only. Unapproved parts may be dangerous and will invalidate the warranty.
• Use an air hose to regularly blow out any dirt from the wire liner and keep the welder clean for best and safest performance. Check and spray the gas cup and contact tip regularly with  anti-spatter spray, available from your Sealey dealer.
• Locate welder in a suitable work area. Ensure that the area has adequate ventilation as welding fumes can be harmful.
• Keep work area clean, tidy and free from unrelated materials. Also ensure the working area has adequate lighting and that a fire extinguisher is at hand.
• exposing skin to ultraviolet rays given off by electric arc. Wear safety welding gauntlets.
• Remove ill fitting clothing, remove ties, watches, rings and other loose jewellery and contain long hair.
• Ensure the workpiece is correctly secured before welding.
• Avoid unintentional contact with the workpiece. Accidental or uncontrolled use of the torch may be dangerous and will wear the nozzle.
• Keep unauthorised persons away from the work area. Any persons working within the area must wear a protective head shield and gloves. Operators must receive adequate training before using the welder. Stand correctly keeping a good footing and balance, ensure the floor is not slippery and wear non-slip shoes.
• DO NOT operate the welder if it or the cables are damaged.
• DO NOT attempt to fit any unapproved torches or other components to the welder.
• DO NOT get welder wet or use in damp or wet locations or areas where there is condensation.
• DANGER! DO NOT weld near flammable solids, liquids or gases and DO NOT weld containers or pipes which have held flammable materials. Avoid welding materials which have been cleaned with chlorinated solvents or welding near such solvents.
• DO NOT stand welder on a metal workbench, car bodywork or similar. DO NOT touch any live metal parts of the torch or electrode while the machine is switched on.
• DO NOT pull the welder by the cable, or the torch. Protect cables from sharp or abrasive items. DO NOT bend, strain or stand on cables or leads. Protect from heat. Long lengths of slack must be gathered and neatly coiled. DO NOT place cables where they endanger others.
• DO NOT touch the torch or workpiece immediately after welding as they will be very hot. Allow to cool.
• DO NOT operate welder while under the influence of drugs, alcohol or intoxicating medication, or if tired. When not in use store the welder in a safe, dry, childproof area.

GAS SAFETY
Store gas cylinders in a vertical position only and ensure the storage area is correctly secured.

• DO NOT store gas cylinders in areas where the temperature may exceed 50°C. DO NOT use direct heat on a cylinder. Always keep gas cylinders cool.
• DO NOT attempt to repair or modify any part of a gas cylinder or valve and DO NOT puncture or damage a cylinder.
• DO NOT obscure or remove any official labels on a cylinder. Always check the gas identity before use. Avoid getting gas cylinders oily or greasy.
• DO NOT lift a cylinder by the cap, guard or valve. Always keep caps and guards in place and close valve when not in use.

IMPORTANT:
These instructions contain the information you require to prepare your machine for welding, together with a maintenance and a troubleshooting section. The instructions are not intended to teach you how to weld. If you have no experience, we recommend that you seek training from an expert source. MIG welding is relatively easy, but does require a steady hand and supervised practice on scrap metal, as it is only with continued practice that you will achieve the desired results.

INTRODUCTION

INTRODUCTION:
All our Supermig models are suitable for welding with CO², Argon or CO²/Argon mix. Each uses a forced air cooling system to slow transformer heating in order to increase duty cycle and a non-live torch to prevent the risk of accidentally striking an arc. All models are supplied with an Argon/CO² regulator. Welders are illustrated with gas bottles to give an indication of size only; gas is not included. A contract for the supply of gas should be arranged with your local gas distributor or you can purchase disposable bottles from your local Sealey dealer.

SPECIFICATION

• MODEL No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SUPERMIG140
• Welding Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 – 140A
• Wire Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 – 5.0kg
• Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50% @ 55A, 20% @ 80A
• Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Forced Air
• Spot welding timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NO
• Gas Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CO², Argon, CO²/Argon mix
• Torch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Non-live
• Power Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230V 1ph
• Absorbed power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8kW
• Case size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Compact
• Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22kg

ASSEMBLY & PREPARATION

Assembly

1.  HANDLE. Take the straight metal handle section and identify the end which has a rectangular hole in it’s rounded top surface. See ‘C’ in fig.1-A.
2.  Ensuring that this hole is uppermost, insert the handle into the opening in the front of the plastic handle until the catch ‘D’ engages in the hole ‘C’ as shown in fig.1-B.
3.  WHEELS. Referring to fig.2, attach a wheel (1) to axle (2) using a circlip(3) and insert a hub cap (4) into the centre of the wheel.
4. Raise the welder from the ground by approximately 70mm and insert the axle fixing plates (5) through the slots in the rear platform as shown below.
5. Slide the axle (2) underneath the rear platform and through the holes in the axle fixing plates.
6. Slide the other wheel (1) over the protruding axle (2) and fix in place using a circlip (3).
7. Push the other hub cap (4) into the centre of the wheel.
8. FOOT. Attach the bent metal foot to the underside of the welder just back from the front panel using the two self-tapping screws provided.

Ensure that the regulator (B) is closed (knob turned fully clockwise) and then screw it onto the cylinder (finger tight only). Once the regulator has opened the cylinder valve, indicated by the sound of gas escaping, screw it one full turn further, which is sufficient to seal the cylinder.
WARNING
Excessive tightening of the regulator will over-compress the sealing washer and allow the gas to leak.

Push the gas tube (A) into the regulator (to remove tube, press the collet in and pull the tube out). Leave the regulator closed until the welder is fully set up and you are ready to weld. 4.3.3. When you are ready to commence welding switch the machine on and turn the regulator knob halfway for a flow of approx. 2l/min, and all the way for a max. flow of approx. 4l/min.Always remove the flow regulator after use if the machine is to be stored for any length of time.

Referring to fig.4, rotate the pressure knob (F) anti-clockwise and remove it from the threaded spindle together with the spring (E) and the top disc (D). Small reels of wire will run on the spindle itself. The larger 5kg wire reel will run on the larger diameter flange at the base of the reel spindle (A). Place the wire reel (C) onto the spindle ensuring that the wire withdraws from the top of the spool in a forwards direction towards the wire feed unit. Place the plastic top disc (D) over the
end of the spindle followed by the reel spring (E). Thread the pressure knob (F) onto the end of the spindle and screw it down clockwise until the spring is partially compressed. The reel take off pressure should be set to provide a mild braking effect to prevent overrun where loose coils of wire form on the reel. Do not overtighten this knob as too much braking will conflict with the wire tension set on the wire drive

1. Referring to fig.5 turn the knob on the wire tension screw (B) anti-clock wise and unlatch it from the pressure roller moulding. Swing the pressure roller moulding (A) up and away from the drive roller.
2.  Straighten 40-50mm of spool wire (do not allow wire to uncoil), and gently push wire through the plastic guide and through the 6 or 8mm feed roller groove and into the torch liner. Refer to section 7.5 on how to reverse the roller for either 6 or 8mm wire.
3.  Referring to fig.6, move the pressure roller moulding (A) back round onto the grooved drive wheel and swing the wire tension screw (B) up to lock it in place. See 4.6 regarding wire tension.

Feeding the wire through to the torch. (See fig.7) Remove gas cup (a) and contact tip (b) from end of torch as follows:

•  Take torch in left hand with the torch tip facing to the right.

• Grasp gas cup firmly in your right hand.

• Turn gas cup clockwise only and pull cup out to the right.
  WARNING!
  do not turn gas cup anti-clockwise, as this will damage internal spring.

• Unscrew the copper contact tip (right hand thread) to remove.Check welder is switched off “0” and that the earth clamp is away from the torch tip. Connect the welder to the mains power supply and set the voltage switches to MIN/1. See fig.8.

•  Set the wire speed knob to position 5 or 6. Turn on the mains power switch on the front panel. Keeping the torch cable as straight as possible press the torch switch. The wire will feed through to the torch.

• . When wire has fed through, switch welder off, unplug from mains.

  •  Take torch in left hand, slide contact tip over the wire and screw it back into place.

  • Grasp gas cup in right hand, push onto torch head and turn clockwise only.
    WARNING!
    do not turn gas cup anti-clockwise, as this will damage internal spring.

  • Cut wire so that it is just protruding from the cup.

• Setting wire tension.
  IMPORTANT:
  You must set the correct tension, too little or too much tension will cause problematic wire feed and result in a poor weld.

•  For mild steel 0.6mm wire the wire tension screw must be fully tightened and undone in approximately two complete turns (fig.6).

•  Correct tension between the rollers is checked by slowing down the wire between the fingers. If the pressure roller skids the tension is correct. Try to use the lowest tension possible as too high a tension will deform the wire and may result in blowing a fuse on the printed circuit board. When you have completed welding disconnect the unit from the mains supply and store it in a safe, dry place.
  Note:
  Damaged torches and cables are not covered under the warranty

WELDING PRINCIPLES

Welding wire is automatically fed through an insulated liner to the tip of the torch. The torch consists of a switch, liner, gas hose, and control cable. The switch activates the wire feed roller and the gas flow. Releasing the switch stops wire feed and gas flow. The weld current is transferred to the electrode (the wire) from the contact tip at the torch end. The current to the electrode is set using the two switches on the front of the control panel. Wire speed must be adjusted according to current output using the rotary control below the power switches. The higher the current the faster the wire speed. A gas cup fits over the contact tip to direct gas flow towards the weld, (See fig.9) ensuring that the arc welding process is shielded from oxidisation. The shielding gas also assists heating of the weld. The torch is connected to the positive side of a DC rectifier, and the negative clamp is attached to the workpiece.

MAKE SURE THE MACHINE IS SWITCHED OFF AT THE MAINS. IF WELDING A VEHICLE, DISCONNECT THE BATTERY OR FIT AN ELECTRONIC CIRCUIT PROTECTOR (AVAILABLE FROM YOUR LOCAL SEALEY DEALER). ENSURE THAT YOU READ, UNDERSTAND AND APPLY THE SAFETY INSTRUCTIONS IN SECTION 1. attached to the workpiece close to the weld area. Best connection is obtained by grinding the point of contact on the workpiece before connecting the clamp. Welding mild steel with CO² gas is appropriate for most welding tasks where spatter and high build-up of weld do not pose a problem. To
achieve a spatter free and flat weld however, requires an Argon/CO² mixture.

Thermal Protection
Should the welder become overheated due to prolonged use beyond the stated duty cycle, the thermal protection will cause the welder to cut out and the amber light on the front panel will illuminate. Wait for fifteen minutes for the welder to cool down at which time it will reconnect automatically.

RATING PLATE

On the front panel of the welder is the rating plate, giving the following data:

1. The BS/EU standard relating to the safety and construction of arc welding and associated equipment.
2.  Inverter-transformer-rectifier symbols
3. Symbol indicates welding with a continuous flow of welding wire.
4. Symbol for Single-phase AC supply.
5. Rating of internal protection provided by casing.
6.  Output. minutes welding and 8 minutes rest, 100% would indicate continuous welding.
7.  Mains Supply. U1: Rated supply voltage and frequency. I1max: Maximum current. I1eff: Maximum effective current.
8.  A/V – A/V: Welding current adjustment range and corresponding voltages. 9 – Serial Number. Specifically identifies each welder.

MAINTENANCE

DANGER
Unplug the welder from the mains power supply before moulding and then rotate the retainer through 90° to lock it in place. performing maintenance or service.

1. . Wire feed unit:

2.  Check the wire feed unit at regular intervals. The feed roller wire guide plays an important part in obtaining consistent results. Poor wire feed affects the weld. Clean the rollers weekly, especially the feed roller
   groove, removing all dust deposits.

3.  Protect the torch cable assembly from mechanical wear. Clean the liner from the machine forwards by using compressed air. If the liner is blocked it must be replaced. See section 7.6.

4.  Contact tip (to remove tip follow steps in section 4.5)

5.  The contact tip is a consumable item and must be replaced when the bore becomes enlarged or oval. The contact tip MUST be kept free from spatter to ensure an unimpeded flow of gas.

6. Gas cup (to remove cup follow steps in section 4.5)

7. The gas cup must also be kept clean and free from spatter. Build-up of spatter inside the gas cup can cause a short circuit at the contact tip which will result in either the fuse blowing on the printed circuit card, or expensive machine repairs. To keep the contact tip free from spatter, we recommend the use of anti-spatter spray (MIG/722307) available from your Sealey dealer

8. Turning feed roller IMPORTANT: Turn the feed roller to suit the wire size.  There are two grooves on the feed roller, 0.6mm and 0.8mm. Always have the groove that is being used on the outside of the roller (nearest to you). To turn the feed roller first loosen the knob on the wire tension screw and move the screw into its down position (see fig.10-1), then move the tensioning roller assembly to its up position (see fig.10-2). Take hold of the triangular knob on the roller retainer and rotate it 90°anticlockwise to release it as shown in fig.10.3. Now pull the roller retainer off the drive spindle to reveal the roller as shown in fig.11.

9. Pull the roller off the drive spindle, flip it over and put it back on the drive spindle. (See fig 12) The groove size you require should now be visible on the face of the roller. Push the roller retainer back onto the drive spindle with the opening facing left. Ensure that the flanges at the base of the retainer, seat fully into the circular recess in the main moulding and then rotate the retainer through 90° to lock it in place.

10. Replacing wire liner.  worn or damaged wire liner will seriously affect the performance of the welder and should be immediately replaced. First wind the wire back onto the spool and secure it. Remove the four screws securing the torch cable clamp to the wire feed unit (fig.13) and take off the clamp. Undo the torch case (fig.14) and pull the wire liner from the insulation block. Pull out the liner from the torch cable and insert the new one. Reverse the process to re-assemble. Ensure the liner is fully inserted into the torch insulation block and reassemble the torch. Trim the other end of the liner as close to the feed roller as possible. Replace the torch cable clamp.

Replacing gears.
An inexperienced welder can allow spatter to build up in the tip and shroud. In severe cases this can block the wire feed causing gear damage in the wire drive. To check if the gears are worn depress the button on the torch with the set switched on. If the gears are worn, a grating sound will be heard coming from the wire feed motor and you may also observe the feed roller vibrating instead of rotating smoothly. If this is the case, return the welder to your local Sealey dealer for repair.

 TROUBLESHOOTING

Protection automatically resets when transformer has cooled (approx. 15 mins).
No weld current, fuse blowing in 13amp plug.| Rectifier blown.| Replace rectifier.
No weld current.| Bad connection between clamp and workpiece.| Clean or grind contact surface and weld area.
Break in earth lead.| Repair or replace earth lead.
Break in torch lead.| Repair or replace.
Feed motor not working.| Gear damaged or worn.| Replace gears (Section 6.7).
Motor defective.| Replace motor (Contact service agent).
Wire does not feed, feed roller rotates.| Pressure roller improperly adjusted.| Adjust wire tension. (Section 3.6).
Dirt, copper, dust, etc. have collected in torch liner.| Clean the liner from the machine forward. Use compressed air. If too much dirt, replace the liner (Sections 6.2 & 6.6).
Gas cup (nozzle) or tip defective.| Replace gas cup (nozzle) and/or tip (Sections 6.3 & 6.4).
Deformed wire.| Check roller tension (Section 3.6).
Wire feeds unevenly.| Dirt, etc, in liner.| Clean the liner from the machine forward using compressed air.
Gas cup (nozzle) or tip defective.| Replace gas cup (nozzle) and/or tip (Sections 6.3 & 6.4).
Gas cup (nozzle) spattered.| Clean or replace gas cup (nozzle) (Sections 6.3 & 6.4).
Feed roller groove clogged.| Clean feed roller (Sections 6.1 & 6.5).
Feed roller groove deformed.| Replace feed roller (Section 6.5).
Pressure roller tension incorrect.| Adjust tension (Section 3.6).
Unstable arc.| Incorrect settings.| Check settings (Section 3.7).
 | Impurities in weld area.| Clean and/or grind workpiece (Section 4.2.1).
 | Worn or defective gas cup (nozzle).| Replace gas cup (nozzle) (Sections 6.3 & 6.4).
Porous weld.| No gas.| Open gas cylinder, regulate gas flow.
Gas cup clogged.| Clean or replace cup (Section 6.4).
Draft blowing away shielding gas.| Screen off welding site or increase gas flow.
Rusty/dirty joints.| Clean or grind the workpiece (Section 4.2.1).
Torch too far from, or at wrong angle to, workpiece.| Gas cup to workpiece should be 8-10mm. Torch angle approx 75°.
Gas leak.| Check hoses, connections and torch assembly.
Wire sticking in gas cup (nozzle).| Worn or defective gas cup (nozzle).| Replace gas cup (nozzle) (Section 6.4).
Wire deformed.| Check roller tension (Section 3.6).
Wire speed too slow.| Increase wire speed. (Section 3.7).
Irregular weld head.| Torch incorrectly held.| Use correct torch angle.
Wire weaving in weld pool.| Check roller tension and adjust (Section 3.6).
Weld bead too narrow and raised.| Weld current too low.| Increase power and wire speed (Section 3.7).
Weld speed too fast.| Move torch slower and weave a little more.
Weld bead too wide.| Weld current too low.| Increase current and wire speed (Section 3.7).
Weld speed too slow.| Move torch faster and weave less.
Poor penetration.| Weld current too low.| Increase current and wire speed (Section 3.7).
Arc too long.| Bring torch closer to workpiece.
Excessive penetration.| Weld current too high.| Decrease current and wire speed (Section 3.7).
Weld speed too slow.| Move torch faster.
Incorrect distance of torch to workpiece.| Torch distance should be 8-10mm.

Environmental Protection

Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment.
When the product becomes completely unserviceable and requires disposal, drain off any fluids (if applicable) into approved containers and dispose of the product and the fluids according to local regulations.

WEEE Regulations
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment (WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid waste authority for recycling information.

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