Lincoln Electric Pro-MIG 140 Operator's Manual page 4

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FUMES AND GASES
can be dangerous.
6.a.Welding may produce fumes and gases haz-
ardous to health. Avoid breathing these fumes
and gases.When welding, keep your head out of
the fume. Use enough ventilation and/or exhaust
at the arc to keep fumes and gases away from
the breathing zone. When welding with elec-
trodes which require special ventilation such
as stainless or hard facing (see instructions
on container or MSDS) or on lead or cadmi-
um plated steel and other metals or coatings
which produce highly toxic fumes, keep
exposure as low as possible and below
Threshold Limit Values (TLV) using local
exhaust or mechanical ventilation. In con-
fined spaces or in some circumstances, out-
doors, a respirator may be required.
Additional precautions are also required
when welding on galvanized steel.
6.b. Do not weld in locations near chlorinated hydro-
carbon vapors coming from degreasing, clean-
ing or spraying operations. The heat and rays
of the arc can react with solvent vapors to form
phosgene, a highly toxic gas, and other irri-
tating products.
6.c.Shielding gases used for arc welding can dis-
place air and cause injury or death. Always use
enough ventilation, especially in confined areas,
to insure breathing air is safe.
6.d. Read and understand the manufacturer's
instructions for this equipment and the consum-
ables to be used, including the material safety
data sheet (MSDS) and follow your employer's
safety practices. MSDS forms are available from
your welding distributor or from the manufactur-
er.
SAFETY
7.a. Use only compressed gas cylinders containing
the correct shielding gas for the process used
and properly operating regulators designed for
the gas and pressure used. All hoses, fittings,
etc. should be suitable for the application and
maintained in good condition.
7.b. Always keep cylinders in an upright position
securely
chained to an undercarriage or fixed support.
7.c. Cylinders should be located:
•Away from areas where they may be struck or
subjected to physical damage.
•A safe distance from arc welding or cutting
operations and any other source of heat,
sparks, or flame.
7.d. Never allow the electrode, electrode holder or
any other electrically "hot" parts to touch a cylin-
der.
7.e. Keep your head and face away from the cylinder
valve outlet when opening the cylinder valve.
7.f. Valve protection caps should always be in place
and hand tight except when the cylinder is in
use or connected for use.
7.g. Read and follow the instructions on compressed
gas cylinders, associated equipment, and CGA
publication P-l, "Precautions for Safe Handling
of Compressed Gases in Cylinders," available
from the Compressed Gas Association 1235
Jefferson Davis Highway, Arlington, VA 22202.
MAR95
CYLINDER may explode if
damaged.
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