Tweco 100 Weldskill - Manual (Page 8)

WELDSKILL 100 INVERTER
1-2 March 3, 2008
WARNING
ARC RAYS can burn eyes and skin; NOISE
can damage hearing.
Arc rays from the welding process produce
intense heat and strong ultraviolet rays
that can burn eyes and skin. Noise from
some processes can damage hearing.
1. Use a Welding Helmet or Welding Faceshield fi tted
with a proper shade of fi lter (see ANSI Z49.1 and
AS1674.1 listed in Safety Standards) to protect
your face and eyes when welding or watching.
2. Wear approved safety glasses. Side shields
recommended.
3. Use protective screens or barriers to protect others
from fl ash and glare; warn others not to watch the
arc.
4. Wear protective clothing made from durable,
fl ame-resistant material (wool and leather) and
foot protection.
5. Use approved ear plugs or ear muffs if noise level
is high.
Recommended Protective Filters for Electric Welding
Description of Process
Approximate Range of
Welding Current in Amps
Minimum Shade Number of
Filter(s)
Manual Metal Arc Welding - covered
electrodes (MMAW)
Less than or equal to 100 8
100 to 200 10
200 to 300 11
300 to 400 12
Greater than 400 13
Gas Metal Arc Welding (GWAW)
(MIG) other than Aluminium and
Stainless Steel
Less than or equal to 150 10
150 to 250 11
250 to 300 12
300 to 400 13
Greater than 400 14
Gas Metal Arc Welding (GMAW)
(MIG) Aluminium and Stainless Steel
Less than or equal to 250 12
250 to 350 13
Gas Tungsten Arc Welding (GTAW)
(TIG)
Less than or equal to 100 10
100 to 200 11
200 to 250 12
250 to 350 13
Greater than 350 14
Flux-cored Arc Welding (FCAW) -
with or without shielding gas.
Less than or equal to 300 11
300 to 400 12
400 to 500 13
Greater than 500 14
Air - Arc Gouging Less than or equal to 400 12
Plasma - Arc Cutting
50 to 100 10
100 to 400 12
400 to 800 14
Plasma - Arc Spraying
—
15
Plasma - Arc Welding
Less than or equal to 20 8
20 to 100 10
100 to 400 12
400 to 800 14
Submerged - Arc Welding — 2(5)
Resistance Welding — Safety Spectacles or eye
shield
Refer to standard AS/NZS 1338.1:1992 for comprehensive information regarding the above table.