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Tried and trusted by fabricators and professional car repair shops across the UK. Superb quality, Swedish made electronic wire drive motors and heavy duty

transformers make these machines unmatched in performance and value. The Powermig 2500 is the most powerful mig in our range capable of operating on 230

Volt single phase input. Just check the specifications. Ideal for industrial use where 400/440V 3ph is not available. Other models are 415V 3 phase machines.  Each

unit comes with 0.8mm steel wire, non live torch and industrial Argon/CO

2

regulator. All can be used with CO

2

, Argon or Argon mix gas and accept any bottle size.

2. INTRODUCTION & SPECIFICATIONS

IMPORTANT:

These instructions contain information you require to prepare your machine for welding, together with maintenance and a trouble shooting section.

If you have no previous experience the instructions are not intended to show you how to become a welder. Should you have no experience, we recommend that you

seek training from an expert source.  Mig welding is relatively easy to perform, but does require a steady hand and time practising under supervision with scrap metal

as it is only with continued practice that you will achieve the desired results.

1.4  

GENERAL SAFETY

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DANGER!: unplug the welder from the mains power supply before performing maintenance or service.

3

Keep the welder and cables in good working order and condition. 

(Take immediate action to repair or replace damaged parts).

3

Use genuine parts and accessories only. 

(Non recommended parts may be dangerous and will invalidate the warranty).

3

Use an air hose to regularly blow out any dirt from the liner, and keep the welder clean for best and safest performance.

3

Check and spray the gas cup and contact tip regularly with anti-spatter spray available from your Sealey dealer. 

3

Locate welder in adequate working area for its function. Ensure area has adequate ventilation as welding fumes are harmful.

3

Keep working area clean, tidy and free from unrelated materials. Also ensure the working area has adequate lighting, and that a fire extinguisher is at hand.

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WARNING: use welding head shield to protect eyes and avoid 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.

3

Ensure the workpiece is correctly secured before operating the 

welder.

3

Avoid unintentional contact with workpiece. Accidental or uncontrolled use of the torch may be dangerous and will wear the nozzle. 

3

Keep non essential persons away from the working area. Any persons working within the area must use protective head shield and gloves.

3

Operators must receive adequate training before using the welder. The welder must only be operated under supervision.

3

Stand correctly keeping a good footing and balance, and ensure the floor is not slippery, and wear non-slip shoes.

3

Turn voltage switch to "0" or off when not in use.

7

DO NOT operate the welder if it or its cables are damaged and DO NOT attempt to fit any non genuine torches, components, or parts to the welder unit.

7

DO NOT get welder wet or use in damp or wet locations or areas where there is condensation.

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DANGER! DO NOT weld near inflammable materials, solids, liquids, or gases, and DO NOT weld  containers  or  pipes  which  have  held  flammable

materials or gases, liquids or solids. Avoid operating on materials cleaned with chlorinated solvents or near such solvents.

7

DO NOT stand welder on a metal workbench, car bodywork or similar object.

7

DO NOT touch any live metal parts of the torch or electrode while the machine is switched on.

7

DO NOT pull the welder by the cable, or the torch, and DO NOT bend or strain cables, protect from sharp or abrasive items, and DO NOT stand on cables 

or leads. Protect from heat. Long lengths of slack must be gathered & neatly coiled. DO NOT place cables where they endanger others.

7

DO NOT touch the torch or workpiece immediately after welding as they will be very hot. Allow to cool. 

7

DO NOT operate welder while under the influence of drugs, alcohol or intoxicating medication, or if fatigued.

When not in use store the welder in a safe, dry, childproof area.

1.5.

GAS SAFETY

3

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

7

DO NOT store gas cylinders in areas where temperature exceeds 50°C. DO NOT use direct heat on a cylinder. Always keep gas cylinders cool.

7

DO NOT attempt to repair or modify any part of a gas cylinder or valve, and DO NOT puncture or damage a cylinder.

7

DO NOT obscure or remove any official labels from a cylinder. Always check the gas identity before use. Avoid getting gas cylinders oily or greasy.

7

DO NOT try to lift or handle cylinder by its cap, guard or valve. Always keep caps and guards in place and close valve when not in use.

The gas cylinder is heavy, use mechanical lifting equipment. Ensure the cylinder is correctly situated on the welder base stand and secured with chain. 

12 level rotary control power selection.

Output Range:

 . . . . . . . . . . . .30-250 Amps

Duty Cycle:

 . . .25% @ 250A, 30% @ 200A

 . . . . . . . . . . .60% @ 150A, 100% @ 120A

Power Supply:

 . . . . . . . . . . . .230 Volt 1ph

Power Efficiency:

 . . . . . . . . . . . . . .6.6 kVA

Cooling System:

 . . . . . . . . . . . .Turbo Fan

Accepts Bottle Size:

 . . . . . . . . . . . . . . .All

Spot Welding:

 . . . . . . . . . . . . .Timer Fitted

Weight:

 . . . . . . . . . . . . . . . . . . . . . . .67 kg

Model POWERMIG2500

10 level rotary power selection.

 . . . . . . . . . . . . .35-275 Amps

 . .10% @ 260A, 30% @ 240A

 .60% @ 160A, 100% @ 130A

 . . . . . . . . . . . . . .415 Volt 3ph

 . . . . . . . . . . . . . . . . . .8.0 kVA

 . . . . . . . . . . . . . . . .Turbo Fan

 . . . . . . . . . . . . . . . . . . . . . .All

 . . . . . . . . . . . . . .Timer Fitted

 . . . . . . . . . . . . . . . . . . .60 kg

Model POWERMIG2750

 . . . . . . . .12 level rotary power selection.

 . . . . . . . . . . . . . . . . . . . . . .35-350 Amps

 . . . . . . . . . . .10% @ 330A, 15% @ 320A

 . . . . .25% @ 300A, 60% @ 200A, 100% @150A

 . . . . . . . . . . . . . . . . . . . . . .415 Volt 3ph

 . . . . . . . . . . . . . . . . . . . . . . . . .12.5 kVA

 . . . . . . . . . . . . . . . . . . . . . . . .Turbo Fan

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .All

 . . . . . . . . . . . . . . . . . . . . . . . . . . . .95 kg

Model POWERMIG3500

 . .18 level rotary power selection.

 . . . . . . . . . . . . . . . .35-450 Amps

 . . . . .10% @ 430A, 15% @ 420A

25% @ 400A, 60% @ 260A, 100% @ 200A

 . . . . . . . . . . . . . . . .415 Volt 3ph

 . . . . . . . . . . . . . . . . . . .18.5 kVA

 . . . . . . . . . . . . . . . . . .Turbo Fan

 . . . . . . . . . . . . . . . . . . . . . . . .All

 . . . . . . . . . . . . . . . . . . . . .110 kg

Model POWERMIG4500

3. ASSEMBLY

Carefully remove outer carton and packing. Be very careful when removing the welding unit from the packing base as the unit is very heavy, we recommend that

unpacking the base and wheel assembly is undertaken by two persons. Check the welder and contents. Should there be any damaged or missing parts contact
your supplier 

immediately. 

3.1. WHEEL 

ASSEMBLY 

(fig 3).

3.1.1. For models that do not already have the front caster wheels attached, locate the caster wheels in the 

parts box and fix them to the front of the unit.

3.1.2. Take the rear axle and pass through holes in the back gas bottle stand, place wheels on each side 

of axle then slip the washer on each end and fix with cir-clips.

3.2.  CONNECTING THE GAS CYLINDER.

3.2.1. Stand the gas cylinder on the base at the rear of the welder and secure with chain supplied.
3.2.2. If using Argon or Argon mixtures, you will need to use the “bull nose adaptor” enclosed. If you intend to use CO2 gas the 

regulator will fit directly onto the cylinder. If using the bull nose, fit nose adaptor to the cylinder and tighten with a spanner. 

3.2.3. Remove regulator from box and screw it to the  bull nose (or CO2 cylinder). Place the small jubilee clip over the rubber hose 

from the welder, connect the hose to the regulator “BP” output and secure with the jubilee clip (fig 4). 

3.2.4. Set the regulator flow rate to 4litres/min depending on the material to be welded, also taking into consideration any

draughts which are strong enough to disturb the gas flow.

3.2.5. If the welder is to be stored for a long time always remove the flow regulator.

3.3.

TORCH “Euro Connection”.

Your welder is fitted with a “Euro Connection” quick release torch. Simply line the pins in the torch

up with appropriate holes on the front panel connector and push in and tighten the locking nut.

To fit the mains power plug see safety instructions (Chapter 1.).

fig 3

fig 4

POWERMIG2500, 2750, 3500, 4500. - (0051) - (1) - 270100 

Summary of Contents for POWERMIG2500

Page 1: ...MI IG G W WE EL LD DE ER RS S P PO OW WE ER RM MI IG G2 25 50 00 0 P PO OW WE ER RM MI IG G2 27 75 50 0 P PO OW WE ER RM MI IG G3 35 50 00 0 P PO OW WE ER RM MI IG G4 45 50 00 0 POWERMIG Models POWERMIG2500 2750 3500 4500 0051 1 271000 ...

Page 2: ...wer supply leads plugs and all electrical connections for wear and damage You must ensure the risk of electric shock is minimised 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 us...

Page 3: ...d or strain cables protect from sharp or abrasive items and DO NOT stand on cables or leads Protect from heat Long lengths of slack must be gathered neatly coiled DO NOT place cables where they endanger others 7 DO NOT touch the torch or workpiece immediately after welding as they will be very hot Allow to cool 7 DO NOT operate welder while under the influence of drugs alcohol or intoxicating medi...

Page 4: ...fig 6 and pull cup out to the right p WARNING do not turn gas cup anti clockwise as this will damage the internal spring d Unscrew the copper contact tip right hand thread to remove 3 5 3 Models 2500 2750 Check welder is switched off 0 and that the earth clamp is isolated and away from the torch tip Connect the welder to the mains power supply and set the voltage switch to 1 Models 3500 4500 have ...

Page 5: ...ectronic Circuit Protector to battery available from your Sealey dealer 4 2 2 Wire feed switch controls the speed of the wire feed In principle the lower the amperage number the slower the wire speed 4 3 Gas types and their use 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 ...

Page 6: ...e bottom feed roller lift the top feed roller and undo the central screw on the bottom roller sliding it off the spindle Clean and turn the feed roller or replace if damaged then refit it by pushing it back onto the spindle locating it on the keyway and securing in place with the central screw 5 6 Torch Protect torch cable assembly from mechanical wear Clean liner from the machine forwards by usin...

Page 7: ...ce gas cup nozzle and or tip Chapter 5 Clean or replace gas cup nozzle Chapter 5 Clean feed roller Chapter 5 Replace feed roller Chapter 5 Adjust tension Chapter 3 Check settings Chapter 4 Clean and or grind workpiece Chapter 4 Replace gas cup nozzle Chapter 5 Open gas cylinder regulate gas flow Clean or replace cup Chapter 5 Screen off welding site or increase gas flow Clean or grind the workpiec...

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