3M 9100 WARNING, MAINTENANCE, Position locked dark state, Delay, Comfort mode for tack welding, Low battery indicator, Replacement of outer protection plate

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Position locked dark state

When the welding filter is locked in the dark state and the welding filter turns OFF (after 1 hour inactivity), it will automatically reset to sensitivity setting 2.

Delay

The delay function should be used to set the recovery delay from dark to light of the welding filter according to welding method and current. See table on page 250.

Comfort mode for tack welding.

This setting may help reduce eye fatigue resulting from the eye constantly adjusting to differing light levels during tack welding. Tack welding mode uses an intermediate light state (shade 5). If an arc is not struck within 2 seconds the welding filter will switch to the normal light state (shade 3).

Note that the Sensitivity and Delay function are using the same LED indicators on the display.

Low battery indicator

The batteries should be replaced when the low battery indicator flashes or LEDs do not flash when the buttons are pressed.

WARNING

Should the Speedglas 9100 welding shield fail to switch to the dark state in response to an arc, stop welding immediately and inspect the welding filter as described in these instructions. Continued use of a welding filter that fails to switch to the dark state may cause temporary vision loss. If the problem cannot be identified and corrected, do not use the welding filter, contact your supervisor, distributor or 3M for assistance.

MAINTENANCE

Replacement of outer protection plate.

Remove silver front cover. (see figure C:1)

Remove the used outer protection plate and place the new outer protection plate on the welding filter. (see figure C:2)

Silver front cover must always be used (see figure C:3).

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