Sealey MW140A - Manual (Page 2)

Instructions for:
MMA INVERTERS with Accessory Kit
Model Nos:
MW140A,MW160A,MW180A,MW200A
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: 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
1.2. GENERAL SAFETY
OPERATOR SAFETY

operators must receive adequate training before using the inverter.
 Remove ill fitting clothing, remove ties, watches, rings and other loose jewellery and contain long hair.
 DO NOT operate the inverter while under the influence of drugs, alcohol or intoxicating medication, or if tired.
 stand correctly keeping a good footing and balance, ensure that the floor is not slippery and wear non-slip shoes.
 Keep unauthorised persons away from the work area. Any persons working within the area must wear the same protective items.
 Avoid oily greasy clothing. A spark may ignite them.
 DO NOT touch the workpiece close to the weld as it will be very hot. Allow to cool.
 DO NOT touch the electrode holder immediately after use. Allow the electrode holder to cool.
 Wear safety welding gauntlets.
CABLE CONNECTIONS
DANGER! Unplug the inverter from the mains power supply before connecting or disconnect cables or performing maintenance or
service. Direct contact with the inverter circuit is dangerous.

Keep the inverter 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.
 DO NOT use welding cables over 10m in length.
 DO NOT pull the inverter by the cables, or the electrode holder.
 DO NOT bend, strain or stand on cables.
 Protect cables from heat and sharp or abrasive items.
 DO NOT place cables where they will endanger others. long lengths of slack must be gathered and neatly coiled.
 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
dangerous. Exception: Metallic work bench, but connect as near to weld as possible.
 WARNING! Cable connectors must be fully inserted into the sockets and turned to ensure a good electrical contact. Loose
cable connections will cause overheating, rapid deterioration and loss in efficiency.
VENTILATION & TOXIC FUMES

DANGER! DO NOT weld near flammable materials - solids, liquids, or gases. Severe discomfort, illness or death can result from
fumes, vapours, heat, or oxygen enrichment or depletion that welding may produce.

ensure that the area has adequate ventilation as welding fumes are harmful.
 ensure that there is no obstruction to the flow of clean, cool air and ensure that there are no conductive dusts, corrosive vapours or humidity
which could enter the inverter and cause serious damage.

DO NOT weld containers or pipes which have held flammable materials - gases, liquids or solids.
DANGER! Avoid welding on materials cleaned with chlorinated solvents or near such solvents. Vapours from chlorinated solvents
(such as de-greasers) can be decomposed by the heat of the arc to form PHosGeNe, a highly toxic gas, and other lung and eye irritating
products. The ultraviolet (radiant) energy of the arc can also decompose trichloroethylene and perchloroethylene vapours to form phosgene.

DO NOT weld where solvent vapours can be drawn into the welding or cutting atmosphere or where the radiant energy can penetrate to
atmospheres containing even minute amounts of trichloroethylene or perchloroethylene.

Prevent dangerous conditions arising by providing adequate ventilation.
 NEVER ventilate with oxygen.
Original Language Version
1.1.12.  WARNING! Be very cautious if using a petrol or diesel generator. The generator must be stable with regard to frequency
(H3), voltage and wave form. The output must be higher than the power (kVA) of the inverter. The generator must
also be self regulating. If any A.M. feature is not respected the working of the regulation card may be affected.
Use of a generator without a regulator may be dangerous and will invalidate your inverter warranty.
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 of all cables 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.
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. Have any faulty item repaired or replaced immediately by a
qualified electrician.
1.1.10 We recommend that a 16amp industrial round pin plug should be fitted and connected to a 20amp supply having a
Type C breaker. If in doubt you must contact a qualified electrician to ensure that a suitably rated supply is available.
MW140A MW160A MW180A MW200A Issue No1 29/01/13 © Jack sealey limited