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AUTO-DARKENING WELDING PROTECTION FILTER
OPERATION
RPB
®
auto-darkening welding 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 regardless of
the shade level or potential malfunction of
the filter, beyond the darkest shade number
marked on each specific model.
RPB
®
auto-darkening welding filters are
manufactured according to ANSI/ISEA
Z87.1, EN379 requirements and are CE
certified. They are not intended to be used
as a protection against impacts, flying
particles, molten metals, corrosive liquids
or hazardous gases.
Replace potentially malfunctioned or
damaged auto-darkening welding filters
(check that the auto-darkening filter turns
dark if you strike the welding arc).
USAGE
An auto-darkening welding filter built into
a Respirator 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. There should be no tension on the
ADF filter caused by the mounting frame or
mounting system, as it 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 conditions occur, the filter may not be
suitable for use.
FIELD OF APPLICATION
RPB
®
Auto darkening filters are suitable
for all types of electro-welding: covered
electrodes, MIG/MAG, TIG/WIG, plasma
welding, and cutting, except for gas welding
and laser welding.
FUNCTIONS
RPB
®
filters are supplied ready for use.
Check the degree of required protection for
specific welding procedure and select the
recommended shade, light sensitivity as
well as opening time delay.
SHADE ADJUSTMENT
Our model enables shade adjustment range
from 9 to 13. It can be adjusted by the knob
»Shade« which is located on the filter.
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.)
OPENING TIME DELAY ADJUSTMENT:
The opening time delay can be adjusted
from 0.15 to 1.0 seconds. It is recommended
to use a shorter delay with spot welding