Safety Information; Introduction; Personal Protection; Fire Prevention - Helvi UNIMIG 298+T2E Manual De Uso

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1.1 INTRODUCTION

Make sure this manual is carefully read and understood by the welder, and by the maintenance and

technical workers.

1.2 PERSONAL PROTECTION

Welding processes of any kind can be dangerous not only to the operator but to any person situated

near the equipment, if safety and operating rules are not strictly observed.

Arc rays can injure your eyes and burn your skin. The welding arc produces very

bright ultra violet and infra red light. These arc rays will damage your eyes and

burn your skin if you are not properly protected.

•

Wear closed, non-flammable protective clothing, without pockets or turned up trousers, gloves

and shoes with insulating sole and steel toe. Avoid oily greasy clothing.

•

Wear a non-flammable welding helmet with appropriate filter lenses designed so as to shield the

neck and the face, also on the sides. Keep protective lens clean and replace them when broken,

cracked or spattered. Position a transparent glass between lens and welding area.

•

Weld in a closed area that does not open into other working areas.

•

Never look at the arc without correct protection to the eyes. Wear safety glasses with the side shiel-

ds to protect from flying particles.

Gases and fumes produced during the welding process can be dangerous and ha-

zardous to your health.

•

Adequate local exhaust ventilation must be used in the area. It should be provided through a mo-

bile hood or through a built-in system on the workbench that provides exhaust ventilation from the

sides, the front and below, but not from above the bench so as to avoid raising dust and fumes.

Local exhaust ventilation must be provided together with adequate general ventilation and air

circulation, particularly when work is done in a confined space.

•

Welding process must be performed on metal surfaces thoroughly cleaned from rust or paint,

to avoid production of harmful fumes. The parts degreased with a solvent must be dried before

welding.

•

Be very carefull when welding any metals which may contain one or more of the follwing:

Antimony

Copper

Vanadium

•

Remove all chlorinated solvents from the welding area before welding. Certain chlorinated sol-

vents decompose when exposed to ultraviolet radiation to form phosgene gas (nerve gas).

1.3 fIRE PREVENTION

fire and explosion can be caused by hot slag, sparks or the welding arc.

•

Keep an approved fire extinguisher of the proper size and type in the working area. Inspect it re-

gularly to ensure that it is in proper working order;

•

Remove all combustible materials from the working area. If you can not remove them, protect

them with fire-proof covers;

•

Ventilate welding work areas adequately. Maintain sufficient air flow to prevent accumulation of

explosive or toxic concentrations of gases;

•

Do not weld on containers that may have held combustibles;

•

Always check welding area to make sure it is free of sparks, slag or glowing metal and flames;

•

The work area must have a fireproof floor;

1.4 ELECTRIC SHOCK

WARNING: ELECTRIC SHOCK CAN KILL!

•

A person qualified in First Aid techniques should always be present in the working area; If a per-

son is found unconscious and electric shock is suspected, do not touch the person if she or he is

in contact with cable or electric wires. Disconnect power from the machine, then use First Aid. Use