Low Battery Indicator - 3M Speedglas 9100 Air Directives D'utilisation

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Tack Mode
This setting may help reduce eye fatigue resulting from the eye frequently
adjusting to differing light levels during rapid tack welding. As the arc
extinguishes, the fi lter will recover to shade 5. If another arc is not struck
within 2 seconds the fi lter will return to the normal light state (shade 3).

Low Battery Indicator

The batteries should be replaced when the low battery indicator fl ashes or LEDs do not fl ash when the buttons
are pressed.
Table 2. Recommended Guide for Shade Numbers
(Adapted from ANSI Z49.1-2003)
Operation
Electrode
diameter inches
Shielded metal arc
< 3
3-5
5-8
> 8
Gas-metal-arc welding
Gas-tungsten-arc
Air-carbon-arc cutting
Plasma-arc welding
Plasma-arc cutting
Carbon arc welding
Arc current,
Minimum
Recommended
amps
Protective Shade
Shade Number
< 60
7
60-160
8
160-250
10
250-550
11
< 60
7
60-160
10
160-250
10
250-500
10
< 50
8
50-150
8
150-500
10
< 500
10
500-1000
11
< 20
6
20-100
8
100-400
10
400-800
11
< 300
8
300-400
9
400-800
10
15
---
10
12
14
---
11
12
14
10
12
14
12
14
6-8
10
12
14
9
12
14
14
delay
d 1
d 1
d 2
d 2
Table 3
16

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