Weldskill 170 hf inverter – Tweco 170 HF Weldskill User Manual
Page 8
WELDSKILL 170 HF INVERTER
1-2
April 23, 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. Wear a welding helmet fitted with a proper shade of
filter (see ANSI Z49.1 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 flash and glare; warn others not to watch
the arc.
4. Wear protective clothing made from durable,
flame-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)
Less than or equal to 100
8
100 to 200
10
200 to 300
11
300 to 400
12
Manual Metal Arc Welding -
covered electrodes (MMAW)
Greater than 400
13
Less than or equal to 150
10
150 to 250
11
250 to 300
12
300 to 400
13
Gas Metal Arc Welding (GWAW)
(MIG) other than Aluminium and
Stainless Steel
Greater than 400
14
Less than or equal to 250
12
Gas Metal Arc Welding (GMAW)
(MIG) Aluminium and Stainless
Steel
250 to 350
13
Less than or equal to 100
10
100 to 200
11
200 to 250
12
250 to 350
13
Gas Tungsten Arc Welding
(GTAW) (TIG)
Greater than 350
14
Less than or equal to 300
11
300 to 400
12
400 to 500
13
Flux-cored Arc Welding (FCAW)
-with or without shielding gas.
Greater than 500
14
Air
? Arc Gouging
Less than or equal to 400
12
50 to 100
10
100 to 400
12
Plasma-Arc Cutting
400 to 800
14
Plasma-Arc Spraying
—
15
Less than or equal to 20
8
20 to 100
10
100 to 400
12
Plasma-Arc Welding
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.