Tweco A80-A120 CutMaster - Manual (Page 8)

CUTMASTER A80, A120
GENERAL INFORMATION Manual 0-5119
1-2
• Never touch any parts that are electrically “live”
or “hot.”
• Wear dry gloves and clothing. Insulate yourself
from the work piece or other parts of the welding
circuit.
• Repair or replace all worn or damaged parts.
• Extra care must be taken when the workplace is
moist or damp.
• Install and maintain equipment according to
NEC code, refer to item 9 in Subsection 1.03,
Publications.
• Disconnect power source before performing any
service or repairs.
• Read and follow all the instructions in the Oper-
ating Manual.
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
material in the workplace. Any material that
cannot be removed 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
aluminum workpieces when they are cut under-
water or while using a water table. DO NOT cut
aluminum alloys underwater or on a water table
unless the hydrogen 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
processes 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
protective ear plugs and/or ear muffs. Protect
others in the workplace.
• Noise levels should be measured to be sure the
decibels (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 condi-
tion. 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 follow-
ing 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
WARNING: This product contains chemicals, includ-
ing lead, known to the State of California to cause birth
defects and other reproductive harm. Wash hands
after handling.
1.03 Publications
Refer to the following standards or their latest revi-
sions for more information:
1. OSHA, SAFETY AND HEALTH STANDARDS,
29CFR 1910, obtainable from the Superintendent
of Documents, U.S. Government Printing Office,
Washington, D.C. 20402
2. ANSI Standard Z49.1, SAFETY IN WELDING AND
CUTTING, obtainable from the American Welding
Society, 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. Govern-
ment 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