INTRODUCTION
viii
A container with unknown contents should be cleaned (see
preceding paragraph). Do not depend on smell or sight to
determine if it is safe to weld or cut.
Hollow castings or containers must be vented before welding or
cutting to prevent explosion.
Never weld or cut in potentially explosive atmospheres contain-
ing flammable dust, gas, or liquid vapor (such as gasoline).
Do not mount this equipment over combustible surfaces.
Flying sparks or falling slag can fly up to 35 ft (10.7 m) and pass
through cracks, along pipes, through windows or doors, and
through wall or floor openings, out of sight of the operator.
Keep equipment clean and operable, free of oil, grease, and
metallic particles that can cause short circuits in electrical parts.
Overloading arc welding equipment beyond rated capacity may
overheat cables and cause fire.
Loose cable connections may overheat or flash and cause fire.
Never strike an arc on a cylinder or other pressure vessel. It
creates a brittle area that can cause a violent rupture or lead to
rupture under rough handling.
After work is done, check that area is free of sparks, glowing
embers, and flames.
Burn Prevention - Wear protective clothing including gauntlet
welding gloves, hat, and high safety toe shoes. Button shirt collar
to protect chest and neck, button pocket flaps, and wear cuffless
trousers to avoid entry of sparks and slag. Wear dark colored,
substantial long-sleeve clothing (particularly for gas-shielded
arc). As necessary, use additional protective clothing such as
leather jacket or sleeves, flame-proof apron, and fire-resistant
leggings. Avoid outer garments of untreated cotton.
Wear helmet with safety goggles and glasses with side shields
underneath, appropriate filter lenses or plates (protected by clear
cover glass) for welding or cutting (and chipping) to protect the
eyes from radiant energy and flying metal. Replace cover glass
when broken, pitted, or spattered.
Avoid oily or greasy clothing which may be ignited by sparks.
Do not handle hot metal such as electrode stubs and workpieces
without gloves.
Medical first aid and eye treatment facilities and personnel
should be available for each shift unless medical facilities are
close by for immediate treatment of flash burns of the eyes and
skin burns.
Fire and Explosion
(continued)
IMPORTANT SAFETY PRECAUTIONS (continued)
Summary of Contents for 400 GTSW AC/DC
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