Tweco Pak 200 - Manual (Page 12)

PAK 200 GENERAL INFORMATION
GENERAL INFORMATION 1-2 Manual 0-5057
• 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 "1.03 Publications".
• Disconnect power source before performing any
service or repairs.
• Read and follow all the instructions in the Operating
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 fl ammable mate-
rial in the workplace. Any material that cannot be
removed must be protected.
• Ventilate all fl ammable or explosive vapors from the
workplace.
• Do not cut or weld on containers that may have held
combustibles.
• Provide a fi re watch when working in an area where
fi re hazards may exist.
• Hydrogen gas may be formed and trapped under
aluminum workpieces when they are cut underwater
or while using a water table. DO NOT cut alumi-
num 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 pro-
tective 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 "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 fi lters 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 Documents, U.S.
Government Printing Offi ce, 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. Government Printing Offi ce, Washington,
D.C. 20402