Helmet Adjustment (Fig.7-8); Maintenance; Possible Problems And Remedies - Helvi VISION 4.1 Manuel D'instruction

Helmet adjustment (Fig.7-8)

• Because the shapes
of men's head vary from
person to person, the work
position and the observing
angle is different
welding helmet needs to
be adjusted properly.
• Adjust the headband
circumference by rotating
the knob on the back of
the headband (Fig. 7-1)
This can be done while
wearing the helmet to
allow the right tension to
be set to keep the helmet
firmly on the head without it
being too tight.
• Adjust the top strap of
the headband (Fig.7-2) so
that the helmet gets placed
at the right height on your
head.
• Test the fit of
headband, by lifting up and getting down the helmet
a few times while wearing it. If the headband moves,
adjust it again.
• Unscrew the side locking knobs (Fig. 7-3) and
free the locking nuts (Fig. 7-4) on both sides. Slide
the helmet close to or far from your face to adjust the
distance from your eyes to the filter. It's important yours
eyes are both at the same distance from the lenses.
• Adjust the viewing angle by loosening the headgear
tension knob on the right side of the helmet. Release
the adjustment lever, turn it forward or backward to
the desired tilt position. After releasing the lever, the
helmet locks in place (Fig. 8).
• Screw the side locking knobs.

MAINTENANCE

External Protection Lens
• To replace the external
protection lens remove the
filter cartridge (Fig. 9) by
unlocking the holder locks
below the cartridge toward
the center.
Internal protection Lens
• Replace the internal
protection lens if damaged.
Remove the lens from the
window by making it flex
and bringing it out from its
place with the help of your
fingertip or fingernail.
Filter Cartridge
• To replace the filter,
remove the filter cartridge
from the helmet (Fig.9).
Make the top side of the
support flexed and remove
the filter (Fig. 10). Install
and
the
the new filter with care and properly. Reposition the
filter cartridge on the helmet.
Cleaning
• Regularly clean the helmet and the filter with a dry
soft cloth. Do not use aggressive solvents.

POSSIBLE PROBLEMS AND REMEDIES

Irregular Darkening Dimming
• Headband not properly set and uneven distance from
eyes and filter. Adjust again the headband.
Auto-darkening Filter does not darker or flickers
• External Protection Lens are soiled or damaged,
FIG. 7
replace them.
• Sensors are soiled. Clean them carefully.
• Welding current is too low. Increase the sensitivity. .
• Check the batteries, ensure they are in good
condition and properly installed. Check the contact
surfaces and clean them if necessary.
Slow response
FIG. 8
• Operating temperature is too low. Do not use the
mask under -10° C or 14° F.
Poor vision
• External or internal Protection Lens or Filter are
soiled or damaged, replace them.
• Insufficient ambient light.
• Protection shade not properly adjusted, readjust it
Welding helmet is not firm on your head
• The headband is not properly adjusted, readjust it.
IMPORTANT: The user must stop using the auto-
darkening welding helmet immediately if the abo-
ve-mentioned problems cannot be corrected. Con-
tact the dealer.
FIG. 9
FIG. 10
9