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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
AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. RETAIN THESE INSTRUCTIONS FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
1.1.
ELECTRICAL SAFETY
p 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.
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
1.1.2.
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.
Important: Ensure that the voltage marked on the appliance matches the power supply to be used and
1.1.6.
that the plug is fitted with the correct fuse - see fuse rating at right.
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.
DO NOT use worn or damaged cables, plugs or connectors. Immediately have any faulty item repaired
1.1.9.
or replaced by a qualified electrician. When a BS 1363/A UK 3 pin plug is damaged, cut the cable just
above the plug and dispose of the plug safely.
Fit a new 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. DO NOT use this product with a cable extension reel.
1.1.10. Products which require more than 13 amps are supplied without a plug.
WARNING! Be very cautious if using a diesel generator. The generator must be stable with regard to frequency (H3), voltage and wave form.
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The output must be higher than the absorbed power (kW) of the inverter. The diesel generator must also be self regulating.
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Use of a generator without a regulator may be dangerous and will invalidate your inverter warranty.
1.2.
GENERAL SAFETY
DANGER! Unplug the inverter from the power supply before connecting or disconnect cables or performing maintenance or
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service. Direct contact with the inverter circuit is dangerous.
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Keep the inverter and cables in good working order and condition. Take immediate action to repair or replace damaged parts.
3
Use genuine parts and accessories only. Unapproved parts may be dangerous and will invalidate the warranty.
3
Keep the inverter clean for best and safest performance.
3
Ensure that the work area has adequate ventilation or facilities for the removal of harmful welding fumes near the arc. A risk assessment should be
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undertaken and acted upon to assess fume exposure limits based on composition, concentration and length of exposure.
WARNING! Cable connectors must be turned fully in the dinse sockets to ensure a good electrical contact. Loose connections will cause
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overheating, rapid deterioration and loss in efficiency.
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Ensure that there is no obstruction to the flow of clean, cool air around the machine and ensure that there are no conductive dusts, corrosive
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vapours or humidity which could enter the inverter and cause serious damage.
Keep the work area clean and tidy and free from unrelated materials. Also ensure that the work area has adequate lighting.
3
Take adequate measures to insulate the operator from the arc, the workpiece and any (accessible) earthed metal parts in the vicinity. Wear insulating
3
clothing, gloves, shoes and head coverings and operate from insulating mats and platforms where necessary.
WARNING: Use welding head shield to protect eyes and avoid exposing skin to ultraviolet rays given off by electric arc. Wear safety welding gauntlets
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and fire resistant protective clothing.
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Use non-reflecting welding curtains to protect other people in the vicinity of the arc from exposure to ultra violet and infrared rays produced by the arc.
3
Remove ill fitting clothing, remove ties, watches, rings and other loose jewellery and contain long hair.
3
Ensure that the workpiece is correctly secured before operating the inverter.
3
Avoid unintentional contact with workpiece. Accidental striking of the arc is dangerous and may damage the torch.
3
Protect cables from heat and sharp or abrasive items.
3
Keep unauthorised persons away from the work area. Any persons working within the area must wear the same protective items.
3
Operators must receive adequate training before using the inverter.
3
Stand correctly keeping a good footing and balance, ensure that the floor is not slippery and wear non-slip shoes.
3
WARNING: When unit is switched off the yellow fault indicator LED (fig 7.4) will come on for 10-15 seconds whilst the capacitor discharges. DO
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NOT open the unit until the light goes out.
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Turn potentiometer down to minimum setting when not in use.
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DO NOT connect the return cable to any metallic structure which is not part of the workpiece. This will jeopardise weld quality and may be
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dangerous. Exception: Metallic work bench, but connect as near to weld as possible.
WARNING! Extra caution is required in the following unavoidable circumstances. p
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flammable or explosive materials. p
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upon by qualified Health & Safety personnel. Such welding operations should always be attended by personnel trained to deal with emergencies. Welding
operators must not be allowed to work in elevated positions unless insulated safety platforms are used.
WARNING! Working with more than one welding machine on a single work-piece or work-pieces that are connected electrically may generate a
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Welding where there is an increased risk of electric shock. A risk assessment must be carried out and acted
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I N V E R T E R
I N S T R U C T I O N S F O R :
MW140.V3
MODEL NO:
Blue
Neutral
Wire
FUSE RATING 13 AMP
Welding in confined spaces. p
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Yellow & Green
Earth Wire
Brown
Live
Wire
Cable
Restraint
Welding in the presence of
MW140.V3 - 1 - 220205
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