BALDER Grand GDS Bedienungsanleitung Seite 11

AUTODARKENING WELDING PROTECTION FILTER
OPERATION
BALDER autodarkening welding protection filters operate on the basis of a liquid crystal light
shutter that protects the welder's eyes against intense visible light emitted during the welding
process. In combination with the permanent passive IR/UV filter, it protects against hazardous
infrared (IR) and ultraviolet (UV) light. The protection against harmful radiation is present regard-
less of the shade level or potential malfunction of the filter, beyond the darkest shade number
marked on each specific model.
BALDER autodarkening welding protection filters are manufactured according to EN 379 require-
ments and are CE, DIN as well as DIN Plus certified. They are not intended to be used as a
protection 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 »Per-
sonal 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 dam-
age 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 conditions occur,
the filter may not be suitable for use.
FIELD OF APPLICATION
BALDER filters are suitable for all types of electro-welding: covered electrodes, MIG/MAG, TIG/
WIG, plasma welding, cutting and laser welding (only selected models with two shade ranges,
i.e.6-8 and 9-13), except for gas welding.
FUNCTIONS
BALDER filters are supplied ready for use. Check the degree of required protection for
specific welding procedure and if a certain model allows you, select the recommended
shade, light sensitivity as well as opening time delay.
Shade adjustment: Some models (Power DS, Power ES, Grand DS, Grand ES) enable shade
adjustment range from 9 to 13. Selected models Power GDS and Grand GDS have two shade
ranges, i.e. 6-8 and 9-13. It can be adjusted by the knob »Range« which is located on the filter.
The external knob for shade adjustment has two shade ranges (6-8 and 9-13) marked in two dif-
ferent typefaces (positive and negative). The adjustment of the knob »Range« defines the range
which is being used.
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 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 conditions (direct sun, intensive artificial light,
neighboring welder's arcs etc.).
11