3L PLUS WELD TEC-900 Handbuch Seite 4

EN
• SELECTING SHADE LEVEL
Select the shade level you require according to the welding process you will use by referring to the "Shade Guide Table"
below for settings. The shade can be adjusted from shade 5 to 8 and 9 to 13 based upon welding process or application.
Shade is adjusted by setting the shade range switch to the proper range (See fig.5), then turn the shade control knob on
the lens of the helmet to the shade number required (See fig.3).
• SELECTING DELAY TIME
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When welding ceases, the viewing window automatically changes from dark back to light but with a pre-set delay
to compensate for any bright afterglow on the workpiece. The delay time/response can be set to "SHORT" (0.1 sec.)
or "LONG" (1.0 sec.). As you require using the infinitely dial knob on the back of the shade cartridge (See fig.3). It is
recommended to use a shorter delay with spot welding applications and a longer delay with applications using higher
currents. Longer delays can also be used for TIG(pulse) and low current TIG welding in order to avoid the filter opening
when the light path to the sensors is temporarily obstructed by a hand, torch, etc (See fig.3).
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• SELECTING THE GRIND OPTION
When the sensitivity knob is turned to the "Grind" position, the shade function is turned off allowing a clear view to
grind a weld with the helmet providing face protection. Before restarting welding work, Ensure that the shade function
is turned back on before welding again (See fig.3).
• SENSITIVITY
The sensitivity can be set to "HI" (high) or "LO"(low) by using the infinitely dial knob on the back of the shade cartridge.
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The "Mid-High" setting is the normal setting for everyday use. The maximum sensitivity level is appropriate for low wel-
ding current work, TIG or special applications. Where the operation of the helmet is disturbed by excess ambient light,
or another welding machine close by, use the "Low" setting (See fig.3). 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 flash and without annoying spurious triggering due to ambient light conditions (direct sun,
intensive artificial light, neighboring welder's arcs etc.).
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• TEST
Press and hold test to preview shade selection before welding (See fig.4). When released then viewing window will
automatically return to the light state (3.5 Shade).
• POWER
When the low battery LED located on the lens starts to come to red, it is a warning for the battery to be replaced (See
fig.4). The battery is located at the bottom corner of the ADF cartridge.
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• You are now ready to use the helmet. The shading may be adjusted during use by re-setting the potentiometer control.
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