Kemper autodark 660i Manual De Instrucciones página 7

Shade adjustment: Some models (KEMPER autodark 660i) enable shade adjustment
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range from 9 to 13. KEMPER autodark 660x and autodark 760 have two shade ranges,
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i.e. 6-8 and 9-13. It can be adjusted by the knob »Range« which is located on the filter.
The external knob for shade adjustment has two shade ranges (6-8 and 9-13) marked
in two different typefaces (positive and negative). The adjustment of the knob »Range«
defines the range which is being used.
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 0.2 to 0.8
seconds for autodark 660i/660x filters and from 0.1 to 1.0 seconds for autodark 760. It
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is recommended to use a shorter delay with spot welding applications and a longer delay
with applications using higher currents and longer welding intervals. Longer delay can also
be used for low current TIG welding in order to prevent the filter opening when the light path
to the sensors is temporarily obstructed by a hand, torch, etc.
Function welding/grinding: KEMPER autodark 660x and autodark 760 electro-
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optical welding protection filter can be used for both welding and grinding applications.
By selecting the position »Grind«, the filter switches off and it will not be triggered by the
sparks generated during grinding. Before restarting welding, the knob should be set back
to the »Weld« position.
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