Westweld NB-350MK, Manual Instruction

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Fumes and Gases can be dangerous : Welding may produce fumes and gases hazardous to health. Avoid
breathing these fumes and gases. While working in limited room, use enough ventilation and/or exhaust to keep
fumes and gases away from the breathing zone, or use the respirator.
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Shielding gases used for arc welding can displace air and cause injury or death. Always use enough ventilation, especially in
confined areas, to insure breathing air is safe.
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Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing, cleaning or spraying operations. The
heat and rays of the arc can react with solvent vapors to form phosgene, a highly toxic gas, and other irritating products.
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Read and understand the manufacturer’s instructions for this equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your employer’s safety practices. Make sure they are asepsis and innocuity.
4 Spatter : Welding or cutting spatter can cause fire or explosion.
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Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding sparks
from starting a fire. Remember that welding sparks and hot materials from welding can easily go through small
cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily available.
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Where compressed gases are to be used in the field, special precautions should be used to prevent explosion.
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When not welding, make certain that no electriferous part is touching the work piece or the work stage. Accidental contact
can create a fire hazard.
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Do not weld containers or lines, which are not proved to be innocuity.
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Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure that such procedures will
not cause flammable or toxic vapors from substances inside. They can cause an explosion even though they have been “cleaned”.
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Spatter might cause burn. Wear leather gloves, heavy shirt, cuff-less trousers, high shoes and a cap over your hair to prevent
from burning by spatter. Wear the ear shield when performing sideways or face up welding. Always wear safety glasses with
side shields when being in a welding area.
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The welding cables should be as close to the welding area as possible, and the short, the better. Avoid welding cables going
through the building framework, lifting chains, AC or DC cables of other welding machines and appliances. The welding
current is strong enough to damage them while having short circuit with them.
5 Cylinder may explode if damaged.
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Make sure that the gas in the storage cylinder is qualified for welding, and the decompression flow meter,
the adapter and the pipe are all in good condition.
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Always keep cylinders in an upright position securely chained to an undercarriage or fixed support.
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Be sure to put the cylinder in the working space with no crash or shake, and far from welding area.
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Never allow the electrode, electrode holder or any other electrically “hot”parts to touch a cylinder.
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Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.
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Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use.
6 Power : (For electrically powered welding and cutting equipment) Turn off input power before installation,
maintenance and repair to avoid accidents.
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Huanyuan welding equipment is Ι class safeguard equipment; please install the equipment in accordance
with the manufacturer’s recommendations by specific persons.