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O
m
perator's
anual
- 6 -
8. Common problems and remedies
WARNING
!
.
Operator must stop using the auto - darkening filter welding helmet immediately
if the above-mentioned problems cannot be corrected
FAULT
CAUSE
REMEDY
Irregular darkening
dimming
Headband has been set
unevenly and there is an uneven
distance from the eyes to the
filter's lens.
Reset headband to reduce the
difference in distance to the
filter.
Front cover lens is soiled or
damaged.
Change lens cover.
Sensors are soiled or blocked.
Clean the sensors' surface.
Check that arc sensors are not
blocked against the arc light.
Set the Sensitivity regulator to
the upper position.
Auto-darkening
filter does not
darken or flickers
Photocell is not active.
Activate the photocell by
subjecting to direct sunlight for
20-30 minutes before use.
Side parts of the
filter are lighter
than central one.
Normal situation
This a natural feature of the
LCD. Such effect is not
harmful for the eyes.
However, in order to work in
comfortable conditions, try to
maintain 90° viewing angle.
Filter stays dark
after the arc goes
out or when there
is no arc.
Sensors are soiled. Sensitivity is
not properly adjusted.
Inspect the sensors and clean
if necessary. Set the
Sensitivity regulator to the
lower position. If the welding
zone is lighted intensively,
reduce the light.
Slow response
Operating temperature is too low.
Do not operate at
temperatures below - 5 °С or
above 23 °C
Front /inside cover lens and/or
filter lens are soiled
Replace lens.
Poor vision
There is insufficient ambient light
Welding helmet
slips
Headband is not adjusted
properly.
Readjust headband.
