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Technical Information (continued)
A
RCONE
®
auto-darkening filters protect the user against harmful ultra-violet and infrared
rays, both in the dark and light state. No matter what shade the filter is set to, the UV/IR
protection is always there. You can never burn your eyes due to optical radiation
passing through the filter. The users eyes can be severely burned if he welds with a
damaged lens (cracked, pitted, etc.) or optical radiation can possibly enter in from
behind as a result of other welders in the immediate area.
ANSI defines all welding helmets as secondary eye protection from optical
radiation and impact. For complete safety, primary protection, such as
spectacles or goggles, should be used in conjunction with welding helmets.
Protective clothing and accessories such as leather bibs attached to the welding
helmet will protect the user from spatter and optical radiation indirectly entering
from areas behind the helmet.
ACGIH (American Conference of Governmental Industrial Hygienists) has
established a TLV-TWA of 5mg/m
3
for welding fumes. Welding fumes cannot be
classified simply. The composition and quantity of both are dependent on the
alloy being welded and the process and electrodes used.
Digitally Controlled Variable Filters: Press (do not hold) the Select button, an LED
will indicate the current setting. Press and hold the button to change the setting (see
figure 2).
Figure 2: Digital Controls
Analog Controlled Variable Filters: manually control shade and sensitivity with the
knob located on the outside of the helmet (see figure 3).
Figure 3: Analog Controls
FAST SLOW
LED
PUSH BUTTONS
PUSH BUTTON
LED
Shade
Adjustmen
Sensitivity
djustment (where
applicable)
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