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Professional Gas/no Gas MiG Welder

Model no: 

MiGHTYMiG250

Thank you for purchasing a sealey product. Manufactured to a high standard, this product will, if used according to these 

instructions, and properly maintained, give you years of trouble free performance.

IMPORTANT:

 PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE 

THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR 
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

1.  safeTY

1.1.   

 

eleCTriCal safeTY

 

‰

  

WarninG!

 It is the responsibility of the owner and the operator to read, understand and comply with the following:  

 

 

  You must check all electrical products, before use, to ensure that they are safe. You must inspect power cables, plugs, sockets and any  

  other connectors for wear or damage. You must ensure that the risk of electric shock is minimised by the installation of appropriate    

  safety devices. A Residual Current Circuit Breaker (RCCB) should be incorporated in the main distribution board. We also recommend  

  that a Residual Current device (RCd) is used. It is particularly important to use an RCd with portable products that are plugged into   

  a supply which is not protected by an RCCB. If in any 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.

1.1.1.   

The 

electricity at Work act 1989

 requires that all portable electrical appliances, if used on business premises, are tested by a qualified  

 

electrician, using a Portable Appliance Tester (PAT), at least once a year.

1.1.2.   

The 

Health & safety at Work act 1974

 makes owners of electrical appliances responsible for the safe condition of those appliances  

 

and the safety of the appliance operators. 

if in any doubt about electrical safety, contact a qualified electrician.

1.1.3.   

ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply. See 1.1.1. and 1.1.2. and  

 

use a Portable Appliance Tester.

1.1.4.   

ensure that cables are always protected against short circuit and overload.

1.1.5.   

Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that none is loose.

1.1.6.   

Important: ensure that the voltage marked on the appliance matches the power supply to be used and that the supply is correctly fused.

1.1.7.   

do noT

 pull or carry the appliance by the power cable.

1.1.8.   

do noT

 pull the plug from the socket by the cable.

1.1.9.   

do noT

 use worn or damaged cables, plugs or connectors. Immediately have any faulty item repaired or replaced by a qualified    

 electrician. 

1.1.10.  MIGHTYMIG250 is a single phase machine and must be run from a minimum 16amp supply.

  

To achieve maximum output this model will require a 30amp fused supply. We recommend you discuss the installation of an  

 

  industrial round pin plug and socket with your electrician.

 

  Fit a plug according to the following instructions (UK only).

  

a) Connect the Green/YelloW earth wire to the earth terminal ‘e’.

 

  b) Connect the BroWn live wire to the live terminal ‘l’.

 

  c) Connect the BlUe neutral wire to the neutral terminal ‘n’.

 

  d) after wiring, check that there are no bare wires, that all wires have been correctly connected, that the cable outer  

 

 

  insulation extends beyond the cable restraint and that the restraint is tight.

1.1.11.  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 cross-section of the cable on the cable reel must be suitable  

 

for the unit and never lower than the cross-section of the mains cable supplied with the unit.

1.2.    

General  safeTY

 

  

danGer! Unplug the welder from the mains power supply before performing maintenance or service.

 

9

   Keep the welder and cables in good condition. Take immediate action to repair or replace damaged parts.

 

9

   Use genuine parts and accessories only. Unapproved parts may be dangerous and will invalidate the warranty. 

 

9

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

 

9

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

 

9

   locate the welder in a suitable work area. ensure that the area has adequate ventilation as welding fumes are harmful.

 

9

   Keep work area clean, tidy and free from unrelated materials. Also ensure that the work area has adequate lighting and that a fire    

  extinguisher is at hand.

 

‰

   WarninG! Use welding head shield to protect eyes and avoid exposing skin to ultraviolet rays given off by electric arc. Wear  

  safety welding gauntlets.

 

9

   Remove ill fitting clothing, remove ties, watches, rings and other loose jewellery and contain long hair.

 

9

   ensure that the workpiece is correctly secured before operating the welder.

 

9

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

 

9

   Keep unauthorised persons away from the work area. Any persons working within the area must wear protective head shield and    

 gloves.

 

9

   operators must receive adequate training before using the welder.

 

9

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

 

9

   Turn mains power switch to 

off

 when welder is not in use.

 

8

  

do noT

 operate the welder if it or its cables are damaged and 

do noT

 attempt to fit any unapproved torch or other parts to the welder  

 unit.

 

8

  

do noT

 get welder wet or use in damp or wet locations or areas where there is condensation.

 

  

danGer! do noT weld near inflammable materials, solids, liquids, or gases, and do noT weld containers or pipes which   

MIGHTYMIG250 Issue 2 (HF) 15/05/18

Original Language Version

© Jack Sealey limited

Refer to 

instructions

electrical shock 

hazard

 Wear protective 

gloves

 Wear a welding 

mask

Содержание MiGHTYMiG250

Страница 1: ...d you discuss the installation of an industrial round pin plug and socket with your electrician Fit a plug according to the following instructions UK only a Connect the GREEN YELLOW earth wire to the earth terminal E b Connect the BROWN live wire to the live terminal L c Connect the BLUE neutral wire to the neutral terminal N d After wiring check that there are no bare wires that all wires have be...

Страница 2: ...e 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 3 Specification SPECIFICATION Model No MIGHTYMIG250 Maximum Current 250A Wire Capacity steel ...

Страница 3: ...s 4 6 1 CO gas Ensure that the threads on the gas bottle are undamaged and free of oil and grease before attaching the regulator Oil or grease in the presence of high pressure gases can be explosive Ensure that the regulator has an undamaged gasket fitted The regulator will screw directly to the threads on the gas bottle Tighten with a spanner 4 6 2 argon gas or argon mixtures Cylinders containing...

Страница 4: ...red feed groove 0 8 or 1 0 is in line with the wire path See Section 4 13 on how to reverse or change the roller 4 10 1 Release the wire from the reel and cut off any bent portion ensuring that there are no burrs left on the end of the wire Keep the wire under tension at all times to prevent it uncoiling 4 10 2 Straighten about 40 50mm of wire and gently push it through the flexible metal sheathed...

Страница 5: ...7 Screw the black roller retaining knob C back on to the end of the drive shaft and tighten 4 14 Converting to gasless welding When delivered your welder is set up for gas welding see fig 13 with the torch cable connected to the positive terminal and the earthing cable connected to the negative terminal 4 14 1 To weld without gas using flux cored wire you must reverse the polarity and connect the ...

Страница 6: ...ller See Section 4 13 6 4 Contact tip The contact tip is a consumable item and must be replaced when the hole becomes enlarged or oval The contact tip MUST be kept free from spatter to ensure an unimpeded flow of gas Refer to fig 10 and section 4 10 for removal and replacement 6 5 Gas Cup The gas cup must also be kept clean and free from spatter Build up of spatter inside the gas cup can cause a s...

Страница 7: ...tion 4 1 1 Worn or defective gas cup nozzle Replace gas cup nozzle Section 3 10 8 Porous weld No gas Open gas cylinder regulate gas flow Gas cup clogged Clean or replace cup nozzle Section 3 10 6 5 Draft blowing away shielding gas Screen off welding site or increase gas flow Rusty or dirty joints Clean and or grind workpiece Section 4 1 1 Torch too far from or at wrong angle to work The distance f...

Страница 8: ...cording 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 Note It is our policy to continually improve pr...

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