A plasma arc can cause injury and burns, Arc rays can burn eyes and skin – Hypertherm MicroEDGE Pro Shape Cutting Control Rev.2 User Manual
Page 17
Hypertherm
S-7
Safety
03/10
Eye protection Plasma arc rays produce intense
visible and invisible (ultraviolet and infrared) rays that
can burn eyes and skin.
• Use eye protection in accordance with applicable
national and local codes.
• Wear eye protection (safety glasses or goggles with
side shields, and a welding helmet) with appropriate
lens shading to protect your eyes from the arc’s
ultraviolet and infrared rays.
Skin protection Wear protective clothing to protect
against burns caused by ultraviolet light, sparks, and
hot metal.
• Gauntlet gloves, safety shoes and hat.
• Flame-retardant clothing to cover all exposed areas.
• Cuffless trousers to prevent entry of sparks and slag.
• Remove any combustibles, such as a butane lighter or
matches, from your pockets before cutting.
Cutting area Prepare the cutting area to reduce
reflection and transmission of ultraviolet light:
• Paint walls and other surfaces with dark colors to
reduce reflection.
• Use protective screens or barriers to protect others
from flash and glare.
• Warn others not to watch the arc. Use placards
or signs.
ARC RAyS CAN BURN EyES AND SkIN
Arc current
(amps)
Minimum protective
shade number
(ANSI z49.1:2005)
Suggested shade
number for comfort
(ANSI z49.1:2005)
oSHA 29CfR
1910.133(a)(5)
Europe
EN168:2002
Less than 40 A
5
5
8
9
41 to 60 A
6
6
8
9
61 to 80 A
8
8
8
9
81 to 125 A
8
9
8
9
126 to 150 A
8
9
8
10
151 to 175 A
8
9
8
11
176 to 250 A
8
9
8
12
251 to 300 A
8
9
8
13
301 to 400 A
9
12
9
13
401 to 800 A
10
14
10
N/A
Instant-on torches
Plasma arc comes on immediately when the torch
switch is activated.
A PLASMA ARC CAN CAUSE INjURy AND BURNS
The plasma arc will cut quickly through gloves and skin.
• Keep away from the torch tip.
• Do not hold metal near the cutting path.
• Never point the torch toward yourself or others.