Thermal Arc 180 AC, Руководство пользователя

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Notice NOT 034
THERMAL ARC 180 AC/DC
Rev : 00
Date : 03/12/02
SAFETY
USER’S MANUAL
Page
10/ 36
3.1.2. FACE AND EYES
-.It is absolutely necessary to protect your eyes against arc rays.
- Protect your hair and your face against sparks
The welding shield, with or without headset, is always equipped with a proper filter according to the arc
welding current (NS S 77-104 / A 88-221 / A 88.222 standards).
In order to protect shaded filter from impacts and sparks, you have to add a plain glass in front of the shield.
The helmet provided with your equipment (if requested) is equipped with a protective filter. When you want to
replace it, precise the reference and number of opacity degree of the filter. Use the shade of lens as
recommended in the instruction manual (opacity graduation number)
Protect others in the work area from arc rays by using protective booths, UV protective goggles, and if
necessary, a welding shield with appropriate protective filter on (NF S 77-104 - by A 1.5).
Opacity gradation numbers and recommended use for arc welding
Current intensity in Amps
Welding process or
connected techniques 0.5 2.5 10 20 40 80 125 175 225 275 350 450
1 5 15 30 60 100 150 200 250 300 400 500
Coated electrodes 9 10 11 12 13 14
MIG on heavy metals 10 11 12 13 14
MIG on light alloys 10 11 12 13 14 15
TIG on all metals 9 10 11 12 13 14
MAG 10 11 12 13 14 15
Air/Arc gouging 10 11 12 13 14 15
Plasma cutting 9 10 11 12 13
Depending on the conditions of use, the next highest or lowest category number may be used.
The expression “heavy metals” covers steels, alloyed steels, copper and its alloys.
The shaded areas represent applications where the welding processes are not normally used at present.
CARE : Use a higher degree of filters if welding is performed in premises which are not well lighted.
3.2. RISK OF INTERNAL INJURIES
GASES AND FUMES
Gases fumes produced during the welding process can be dangerous and hazardous to your health. Arc
welding works have to be carried out in suitable ventilated areas.
Ventilation must be adequate to remove gases and fumes during operation. All fumes produced during
welding have to be removed as soon as they are given off, and as close as possible from the place they
are produced to be the most efficient.
Vapors of chlorinated solvents can form the toxic gas phosgene when exposed to ultraviolet radiation from
an electric arc.