Tweco SLICE - Manual (Page 10)

10
and local codes. Do not service or
repair equipment with power on. Do
not operate equipment with protective
insulators or covers removed.
Service or repair to equipment must
only be done by qualified, trained
personnel. Do not contact electrically
live parts. Do not touch electrode
with bare skin and electrical ground at
the same time. Always wear dry
welding gloves in good condition.
Aluminized protective clothing can
become part of the electrical path.
Keep oxygen cylinders, chains, wire
ropes, cranes, hoists, and elevators
away from any part of the electrical
circuit. All ground connections must
be checked periodically to determine
that they are mechanically strong and
electrically adequate for the required
current.
Using alternating current is not
recommended for exothermic cutting
under wet conditions or warm
surroundings where perspiration is a
factor. Constant potential type power
supplies shall not be used to supply
current for exothermic cutting. It is
not recommended to use an
amperage output greater than 200
amps.
When cutting is to be suspended for
any substantial period of time, such
as during lunch or overnight, all rods
should be removed from the torch
and the torch carefully located so that
accidental contact cannot occur. The
torch must be disconnected from the
power source when not in use. Never
immerse exothermic cutting torches
in water when cutting with an arc from
a welding power supply. Whenever
possible do not use electrical power
to do exothermic cutting.
SEE SAFETY AND OPERATING
REFERENCES 1 AND 2 SMOKE, FUMES AND
GASES CAN BE
DANGEROUS TO YOUR
HEALTH
Keep smoke, fumes and gases from
the breathing area. Fumes from the
cutting process are of various types
and strengths, depending on the kind
of base metal being worked on. To
ensure your safety, do not breathe
these fumes. Ventilation must be
adequate to remove smoke, fumes
and gases to protect exothermic
cutting operators and others in the
area. Vapors of chlorinated solvents
can form the toxic gas "Phosgene"
when exposed to ultraviolet radiation
from an electric arc. All solvents,
degreasers and potential sources of
these vapors must be removed from
the work area
Fumes produced by cutting
particularly in confined places can
cause discomfort and physical harm if
inhaled over an extended period of
time. Provide adequate ventilation in
the cutting area. Use air-supplied
respirators if ventilation is not
adequate to remove all fumes and
gases. Never ventilate with
oxygen, because oxygen supports
and vigorously accelerates fire.
SEE SAFETY AND OPERATING
REFERENCES 1, 2, 3, AND 4
ARC RAYS, HOT SLAG
AND SPARKS CAN
INJURE EYES AND BURN
SKIN
This cutting process produces
extreme localized heat, and can
produce strong ultraviolet rays.
Never attempt to cut without eye and
face protection that complies with
federal guidelines. A number 10 to
12 shade lens provides the best
protection against arc radiation when
using an electrical arc. A number 5-
shade lens should be used when
cutting without an electrical arc.