3M 100 WARNING, MAINTENANCE

1 ï

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.

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

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).