Tweco 15C Drag-Gun LT - Manual (Page 8)

Drag-gun™ lt
General Information 1-2 Manual 0-4965
ELECTRIC SHOCK
Electric Shock can injure or kill. The plasma arc
process uses and produces high voltage electrical
energy. This electric energy can cause severe or
fatal shock to the operator or others in the work-
place.
• Never touch any parts that are electrically
“live” or “hot.”
• Wear dry gloves and clothing. Insulate your-
self 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 work-
place 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
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 flamma-
ble 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 work pieces when they are
cut underwater 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 lev-
els.
• 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 fol-
lowing 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
work piece.