3M Welding System 3M Speedglas User Manual

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Sensitivity setting (Speedglas 100V only)
The sensitivity of the photo detector system (which responds to the
light from the welding arc) can be adjusted to accommodate a variety of
welding methods and workplace conditions. In order to see the current
sensitivity setting, momentarily press the SENS button. To select another
setting, press the SENS button repeatedly until the LED shows the desired
setting.
Position 1 Least sensitive setting. Used if there is interference
from other welders’ arcs in the vicinity.
Position 2 Normal position. Used for most types of welding
indoors and outdoors.
Position 3 Position for welding with low current or with stable
welding arcs. (eg TIG welding)
If the lter does not darken during welding as desired, increase the
sensitivity until the welding lter switches reliably. Should the sensitivity
be set too high, the lter may remain in the dark state after welding is
complete due to ambient light. In this case, adjust the sensitivity downward
to a setting where the welding lter both darkens and lightens as desired.
Low battery indicator
The batteries should be replaced when the low battery indicator ashes or
LEDs do not ash when the buttons are pressed.
WARNING
Should the Speedglas 100 welding shield fail to switch to the dark state
in response to an arc, stop welding immediately and inspect the welding
lter as described in these instructions. Continued use of a welding lter
that fails to switch to the dark state may cause temporary vision loss. If the
problem cannot be identied and corrected, do not use the welding lter,
contact your supervisor, distributor or 3M for assistance.
MAINTENANCE
Replacement of outer protection plate.
Remove front frame. (see gure C:1)
Remove the used outer protection plate and place the new outer protection
plate on the welding lter. (see gure C:2)
Front frame must always be used (see gure C:3).

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