Miller Pro-Hobby Series, Руководство пользователя

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OM-231 425 Page 12
SECTION 8 − MAINTENANCE
.
Never use solvents or abrasive cleaning detergents. Do not immerse the lens assembly in water.
The helmet requires little maintenance. However, for best performance clean
after each use. Using a soft cloth dampened with a mild soap and water solution,
wipe the cover lenses clean. Allow to air dry. Occasionally, the filter lens and
sensors should be cleaned by gently wiping with a soft, dry cloth.
SECTION 9 − TROUBLESHOOTING
Trouble Remedy
Auto lens not On; lens
does not darken momen-
tarily when the On button
is pressed.
Check batteries and verify they are in good condition and installed
properly. Also, check battery surfaces and contacts and clean if
necessary.
Auto lens not switching;
lens stays light and does
not darken when welding.
Stop welding immediately: Press the On button on variable shade
helmets. On fixed-shade helmets, make sure the lens solar cell is
properly charged by placing the helmet in direct sunlight for 20
minutes. If power is on, review the sensitivity recommendations
and adjust sensitivity. Clean lens cover and sensors of any ob-
structions. Make sure the sensors are facing the arc; angles of
45 _ or more may not allow the arc light to reach the sensors.
Auto lens not Switching;
lens stays dark after the
weld arc is extinguished,
or the lens stays dark
when no arc is present.
Fine-tune the sensitivity setting by making small adjustments to
the control by turning it toward the “min” setting. In extreme light
conditions, it may be necessary to reduce the surrounding light
levels.
Sections of the auto-lens
are not going dark; distinct
lines separate the light and
dark areas.
Stop welding immediately: The auto-lens may be cracked which
can be caused by the impact of dropping the helmet. Weld spatter
on the auto lens may also cause cracking. (The lens may need to
be replaced; most cracked lenses are not covered by warranty).
Auto lens switching or
Flickering; lens darkens
then lightens while the
welding arc is present.
Review the sensitivity setting recommendations and increase the
sensitivity if possible. Be sure the arc sensors are not being
blocked from direct access to the arc light. Check the lens cover
for dirt and spatter that may be blocking the arc sensors. Increas-
ing Lens Delay to Fast position may also reduce switching.
Inconsistent or lighter
auto-lens shading in the
dark-state, noticeable on
the outside edges and
corners.
Referred to as an angle of view effect, auto-darkening lenses
have an optimum viewing angle. The optimum viewing angle is
perpendicular or 90 _ to the surface of the auto-lens. When that
angle of view varies in the dark-state, welders may notice slightly
lighter areas at the outside edges and the corners of the lens. This
is normal and does not represent any health or safety hazard.
This effect may also be more noticeable in applications where
magnifying lenses are used.