D.1
Figure
During assembly of the helmet and welding filter, or during the replacement of
the protection screens, make sure that all parts are firmly in place thus prevent-
ing any light from entering the helmet. Should there still be any light entering,
repeat the procedure until the problem is eliminated, otherwise the helmet must
not be used for welding. Before placing the new protection screens, always re-
move the protection layers from both sides.
AUTODARKENING WELDING PROTECTION FILTER
OPERATION
KEMPER autodarkening welding protection filters operate on the basis of a liquid crys-
tal light shutter that protects the welder’s eyes against intense visible light emitted dur-
ing the welding process. In combination with the permanent passive IR/UV filter, it pro-
tects against hazardous infrared (IR) and ultraviolet (UV) light. The protection against
harmful radiation is present regardless of the shade level or potential malfunction of
the filter, beyond the darkest shade number marked on each specific model.
KEMPER autodarkening welding protection filters are manufactured according to EN
379 requirements and are CE certified. They are not intended to be used as a protec-
tion against impacts, flying particles, molten metals, corrosive liquids or hazardous
gases. Replace potentional malfunctioned (check that the autodarkening filter turns
dark if you strike the welding arc) or physically damaged autodarkening welding filter.
Protection screens, both internal and external (polycarbonate or CR39), must be
used in conjunction with the autodarkening filter in order to protect it against
permanent damage.
USAGE
An autodarkening welding protection filter built into a welding helmet is considered to
be »Personal Protection Equipment« (PPE) protecting the eyes, face, ears and neck
against direct and indirect hazardous light of the welding arc. In case that you have
only bought a filter without the helmet, you need to select the appropriate helmet
designed to be used in combination with an autodarkening welding protection filter.
It has to allow the filter, including the internal and external protection screens, to be
adequately mounted into the helmet. There should be no increased point tensions
caused by the fixing frame or mounting system, as they could cause severe damage to
the filter. Make sure that solar cells and photo-sensors are not covered by any part of
the helmet, as this could prevent the proper operation of the filter. If any of these con-
ditions occur, the filter may not be suitable for use.
FIELD OF APPLICATION
KEMPER
autodark
®
filter is suitable for most types of electro-welding: e.g. covered elec-
trodes and MIG/MAG. It may be used for some TIG applications above 50 amps.
FUNCTIONS
Shade adjustment:
KEMPER
autodark
®
electro-optical filter is supplied ready for
use. Check the degree 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
triggering. As a simple rule for optimum performance, it is recommended to set sensitiv-
ity 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 conditions (direct sun, intensive artificial light, neighboring welder’s arcs etc.).
5
EN
