User`s manual

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5-2. Light Sensitivity Control
Where problems are encountered during
welding at low amps (e.g. TIG) or there is a high
level of ambient light please follow these
steps. First try adjusting the sensitivity control
switch. Start with the sensitivity LOW (gently
turn anticlockwise until the knob stops) and adjust upwards as required. If this
does not solve the problem, set the sensitivity control in the middle position and
hold the helmet close to the target object and adjust the shade control
completely clockwise. If the welding filter stays in the light state, leave the
control set at this point. If the filter switches to the dark state, turn the shade
adjustment back until the filter just switches into the light state. The filter
should now be adjusted correctly. If the welding filter still does not respond
appropriately, please adjust the sensitivity control again (having previously
adjusted the shade control as explained above). [To achieve optimum results
in very unusual circumstances you may need to perform this process again
having first reset the sensitivity control to low.]
5-3. Delay Control
Adjustment of the speed at which the welding
filter clears can be reduced by means of the
delay control toggle switch. When this switch
is set to 'Fast' the screen will clear more quickly.