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INTRODUCTION
This manual contains descriptions, operating instructions and basic maintenance procedures for
the
Plasma 30,40,50,
machines. Read this manual thoroughly. A complete understanding of the
characteristics and capabilities of this equipment will assure the dependable operation for which it
was designed.
WARNING
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Warning: Protect yourself and others from injury — read and follow these precautions.
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Only qualified persons should install, operate, maintain, and
repair this unit.
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During operation, keep everybody, especially children, away.
CUTTING can cause fire or explosion.
Hot metal and sparks blow out from the cutting arc.
The flying sparks and hot metal, hot workpiece, an hot equipment can cause fires and burns.
Check and be sure the area is safe before doing any cutting.
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Remove all flammables within 35 ft (10.7 m) of the cutting arc. If this is not possible, tightly cover
them with approved covers.
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Do not cut where flying sparks can strike flammable material.
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Protect yourself and others from flying sparks and hot metal.
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Be alert that sparks and hot materials from cutting can easily go through small cracks and
openings to adjacent areas.
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Watch for fire, and keep a fire extinguisher nearby.
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Be aware that cutting on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side.
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Do not cut on closed containers such as tanks or drums.
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Connect work cable to the work as close to the cutting area as practical to prevent cutting current
from traveling long, possibly unknown
paths and causing electric shock, sparks, and fire hazards.
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Do not use plasma cutter to thaw frozen pipes.
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Never cut containers with potentially flammable materials inside −
they must be emptied and properly cleaned first.
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Do not cut in atmospheres containing explosive dust or vapors.
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Do not cut pressurized cylinders, pipes, or vessels.
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Do not cut containers that have held combustibles.
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Wear oil-free protective garments such as leather gloves, heavy shirt, cuffless trousers, high
shoes, and a cap.
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Do not locate unit on or over combustible surfaces.
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Remove any combustibles, such as a butane lighter or matches,
from your person before doing any cutting.
_
Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B
for hot work and have a fire watcher and extinguisher nearby.
Touching live electrical parts can cause fatal shocks or severe burns. The torch and work circuit
are electrically live whenever the output is on. The input power circuit and machine internal circuits
are also live when power is on. Plasma arc cutting requires higher voltages than welding to start
and maintain the arc (200 to 400 volts dc are common), but also uses torches designed with safety
interlock systems which turn off the machine when the shield cup is loosened or if tip touches
electrode inside the nozzle. Incorrectly
installed or improperly grounded equipment is a hazard.
ELECTRIC SHOCK can kill.
