Tweco 35A CutSkill - Manual (Page 6)

cutskill 35A
GENERAL INFORMATON 1-2 Manual 0-5104
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 work-
place.
• 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 Sub-
section 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 infrared
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 protec-
tive 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 otherwise
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.)
Eye protection fi lter shade selector for welding or cutting
(goggles or helmet), from AWS A6.2-73.
Welding or Cutting
Operation
Electrode Size
Metal Thickness
Filter
Shade
Welding or Cutting
Operation
Electrode Size
Metal Thickness
Filter
Shade
Torch soldering 2
Gas metal-arc
welding (MIG)
Torch brazing 3 or 4 Non-ferrous base metal All 11
Oxygen Cutting Non-ferrous base metal All 12
Light Under 1 in., 25 mm 3 or 4 Gas tungsten arc welding All 12
Medium 1 to 6 in., 25-150 mm 4 or 5 (TIG) All 12
Heavy Over 6 in., 150 mm 5 or 6 Atomic hydrogen welding All 12
Gas welding Carbon arc welding All 12
Light Under 1/8 in., 3 mm 4 or 5 Plasma arc welding
Medium 1/8 to 1/2 in., 3-12 mm 5 or 6 Carbon arc air gouging
Heavy Over 1/2 in., 12 mm 6 or 8 Light 12
Shielded metal-arc
welding
(stick) electrodes
Under 5/32 in., 4 mm 10 Heavy 14
5/32 to 1/4 in.,
4 to 6.4 mm
12 Plasma arc cutting
Over 1/4 in., 6.4 mm 14 Light Under 300 Amp 9
Medium 300 to 400 Amp 12
Heavy Over 400 Amp 14
Table 1-1