Tweco 300 Ultra-Cut - Manual (Page 10)

ULTRACUT 300
Manual No. 0-4819 Ultra-Cut 300 1-2 SAFETY
FIRE AND EXPLOSION
Fire and explosion can be caused by hot slag, sparks, or the
plasma arc.
• Be sure there is no combustible or flammable mate-
rial in the workplace. Any material that cannot be re-
moved must be protected.
• Ventilate all flammable or explosive vapors from the
workplace.
• Do not cut or weld on containers that may have held
combustibles.
• Provide a fire watch when working in an area where
fire hazards may exist.
• Hydrogen gas may be formed and trapped under alu-
minum workpieces when they are cut underwater or
while using a water table. DO NOT cut aluminum al-
loys underwater or on a water table unless the hydro-
gen gas can be eliminated or dissipated. Trapped
hydrogen gas that is ignited will cause an explosion.
NOISE
Noise can cause permanent hearing loss. Plasma arc pro-
cesses can cause noise levels to exceed safe limits. You
must protect your ears from loud noise to prevent permanent
loss of hearing.
• To protect your hearing from loud noise, wear protec-
tive ear plugs and/or ear muffs. Protect others in the
workplace.
• Noise levels should be measured to be sure the deci-
bels (sound) do not exceed safe levels.
• For information on how to test for noise, see item 1 in
Subsection 1.03, Publications, in this manual.
PLASMA ARC RAYS
Plasma Arc Rays can injure your eyes and burn your skin.
The plasma arc process produces very bright ultra violet and
infra red light. These arc rays will damage your eyes and
burn your skin if you are not properly protected.
• To protect your eyes, always wear a welding helmet or
shield. Also always wear safety glasses with side
shields, goggles or other protective eye wear.
• Wear welding gloves and suitable clothing to protect
your skin from the arc rays and sparks.
• Keep helmet and safety glasses in good condition.
Replace lenses when cracked, chipped or dirty.
• Protect others in the work area from the arc rays. Use
protective booths, screens or shields.
• Use the shade of lens as suggested in the following
per ANSI/ASC Z49.1:
Minimum Protective Suggested
Arc Current Shade No. Shade No.
Less Than 300* 8 9
300 - 400* 9 12
400 - 800* 10 14
* These values apply where the actual arc is
clearly seen. Experience has shown that lighter
filters may be used when the arc is hidden by the
workpiece.
LEAD WARNING
This product contains chemicals, including lead, or other-
wise produces chemicals known to the State of California to
cause cancer, birth defects and other reproductive harm.
Wash hands after handling.
(California Health & Safety Code § 25249.5 et seq.)
1.03 Publications
Refer to the following standards or their latest revisions for
more information:
1. OSHA, SAFETY AND HEALTH STANDARDS, 29CFR
1910, obtainable from the Superintendent of Docu-
ments, U.S. Government Printing Office, Washing-
ton, D.C. 20402
2. ANSI Standard Z49.1, SAFETY IN WELDING AND
CUTTING, obtainable from the American Welding So-
ciety, 550 N.W. LeJeune Rd, Miami, FL 33126
3. NIOSH, SAFETY AND HEALTH IN ARC WELDING
AND GAS WELDING AND CUTTING, obtainable from
the Superintendent of Documents, U.S. Government
Printing Office, Washington, D.C. 20402
4. ANSI Standard Z87.1, SAFE PRACTICES FOR OC-
CUPATION AND EDUCATIONAL EYE AND FACE
PROTECTION, obtainable from American National
Standards Institute, 1430 Broadway, New York, NY
10018
5. ANSI Standard Z41.1, STANDARD FOR MEN’S
SAFETY-TOE FOOTWEAR, obtainable from the
American National Standards Institute, 1430 Broad-
way, New York, NY 10018
6. ANSI Standard Z49.2, FIRE PREVENTION IN THE
USE OF CUTTING AND WELDING PROCESSES,
obtainable from American National Standards Insti-
tute, 1430 Broadway, New York, NY 10018
7. AWS Standard A6.0, WELDING AND CUTTING CON-
TAINERS WHICH HAVE HELD COMBUSTIBLES, ob-
tainable from American Welding Society, 550 N.W.
LeJeune Rd, Miami, FL 33126