RECOMMENDED SHADE LEVELS FOR VARIOUS WELDING APPLICATIONS
/ EN 379 /
Duo
Duo
Duo
Duo
Duo
Duo
Duo
WELDING
PROCESS
MMA
CURRENT IN AMPERES
MAG
TIG
MIG heavy met-
als
MIG light metals
Stainless, AI
Plasma cutting
Micro plasma
welding
6
10
15
30
40
60
70
100 125 150 175 200 225 250 300 350 400
9
10
11
12
13
8
9
10
11
12
8
9
10
11
12
13
8
14
9
10
11
12
13
10
11
12
13
9
10
11
12
13
4
5
6
7
8
9
10
11
12
13
of required protection for specific welding process and select the recommended shade with
the shade adjustment knob. You can select the shade from shade 9 to shade13.
Adjustment of sensitivity:
Most welding applications can be performed with welding light
sensitivity set to maximum. The maximum sensitivity level is appropriate for low welding
current work, TIG, or special applications. The welding light sensitivity has to be reduced
only in some specific surrounding lighting conditions in order to avoid unwanted trigger-
ing. As a simple rule for optimum performance, it is recommended to set sensitivity to the
maximum at the beginning and then gradually reduce it, until the filter reacts only to the
welding light flashes and without annoying spurious triggering due to ambient light condi-
tions (direct sun, intensive artificial light, neighboring welder’s arcs etc.).
Opening time delay adjustment:
The opening time delay can be adjusted from 0.1 to 0.8
seconds. It is recommended to use a shorter delay with spot welding applications and a
longer delay with applications using higher currents and longer welding intervals. Longer
delay can also be used for low current TIG welding in order to prevent the filter opening
when the light path to the sensors is temporarily obstructed by a hand, torch, etc.
Function welding/grinding:
Duo electro-optical welding filter can be used for both welding
and grinding applications. By selecting the position »Grind«, the filter switches off and it will
not be triggered by the sparks generated during grinding. Before restarting welding work,
the knob should be set back to the »Shade (9-13)« position.
6
EN
Summary of Contents for JACKSON SAFETY AIRMAX J7210
Page 2: ...2...
Page 43: ...43...
Page 87: ...H K K A G B F D E E D F C G A I J A 1 2 3 4 a 4 b B 42...
