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1.2.  MODEL POWERMIG 2500 only, 

IS A SINGLE PHASE MACHINE.

IMPORTANT: TO ACHIEVE MAXIMUM OUTPUT THIS MODEL WILL REQUIRE

A 30AMP FUSED SUPPLY. WE RECOMMEND YOU DISCUSS THE INSTALLATION 

OF AN INDUSTRIAL ROUND PIN PLUG & SOCKET WITH YOUR ELECTRICIAN.

1.2.1.

To fit a 13Amp plug proceed as follows:

(UK only - see diagram figure 1). 

Ensure the unit is correctly earthed via a three-pin plug. 

a)  Connect the GREEN/YELLOW earth wire to the earth terminal ‘E’.
b) Connect the BROWN live wire to live terminal ‘L’.

c)  Connect the BLUE neutral wire to the neutral terminal ‘N’.

After wiring, check there are no bare wires, that all wires have been 

correctly connected and that the wire restraint is tight.

1.2.2.

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 cross-section of the cable on the cable reel must be suitable for the unit and never lower than the cross-section of the main cable supplied with unit. 

INSTRUCTIONS FOR:

Thank you for purchasing a Sealey Welder. 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

BEFORE USING THIS PRODUCT, PLEASE READ THE INSTRUCTIONS CAREFULLY. MAKE CAREFUL NOTE OF SAFETY INSTRUCTIONS,

WARNINGS AND CAUTIONS. THIS PRODUCT SHOULD ONLY BE USED FOR ITS INTENDED PURPOSE. FAILURE TO DO SO MAY CAUSE DAMAGE

OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY. RETAIN THESE INSTRUCTIONS FOR FUTURE USE.

1. SAFETY INSTRUCTIONS

P O W E R M I G 2 5 0 0 ,   P O W E R M I G 2 7 5 0 ,

P O W E R M I G 3 5 0 0 ,   P O W E R M I G 4 5 0 0 .

1. 3. MODELS POWERMIG 2750, 3500 & 4500.

ARE 3 PHASE MACHINES AND MUST HAVE AN APPROPRIATE PLUG FITTED.

p

p

 

 

WARNING! 

ELECTRICAL INSTALLATION OF  WELDER TO  A 3 PHASE 415VOLT SUPPLY MUST ONLY BE CARRIED OUT BY A QUALIFIED

ELECTRICIAN. Make sure the power supply cable is correctly connected to the Earth. 

1.3.1.

This product must be fitted with a 3 phase plug according to diagram figure 2, and will 

require a minimum of  16AMPs per phase, (preferably 32AMP) electrical supply. 

You must contact a qualified Electrician to ensure an appropriately fused supply is available.

Connect GREEN/YELLOW wire to Earth ‘E’

Connect BLUE wire to R1 (or L1) Terminal.

Connect BROWN wire to S2 (L2) Terminal.

Connect the BLACK wire to terminal 3.

When completed, check there are no bare wires, that all wires have been connected correctly and the

cable restraint is tight.

1.3.2.

DO NOT use this product with a standard extension cable. Only use ARMOURED 

extension cable.

1.1.

ELECTRICAL SAFETY. 

p

p

 

 

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 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 use an RCD together with portable products that are plugged into an electrical supply not protected by an RCCB. If in doubt consult a

professional 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 all portable electrical appliances, if used on a business premises, to be tested by a qualified 

Electrician at least once a year by using a Portable Appliance Tester (PAT).

1.1.2.

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.

1.1.3.

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).

1.1.4.

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

1.1.5.

Regularly inspect power supply, leads, plugs and all electrical connections for wear and damage, especially power connections, to ensure that none are loose. 

1.1.6.

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 correct capacity fuse. 

1.1.7.

DO NOT pull or carry the powered appliance by its power supply lead or output cables.

1.1.8.

DO NOT pull power plugs from sockets by the power cable.

1.1.9.

DO NOT use worn or damage leads, plugs or connections. Immediately replace or have repaired by a qualified Electrician. A U.K. 3 pin plug with ASTA/BS approval is 

fitted. In case of damage, cut off  and fit a new plug according to the model, (discard old plug safely).

1.1.10. Some products require more than a 13Amp electrical supply. In such a case, 

NO

plug will be fitted. 

You must

contact a qualified Electrician to ensure a 30 amp fused 

supply is available. We recommend you discuss the installation of a industrial round pin plug & socket with your electrician.

1.1.11.

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 cross-section of the cable on the cable reel must be suitable for the unit and

never lower than the cross-section of the main cable supplied with the unit.

Blue

Neutral 

wire

Yellow & Green 

Earth wire 

wire 

restraint

FUSE RATING 

IS 13Amp.

Brown

Live 

wire

fig 1

fig 2

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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