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3. Grasp center adapter at cover and twist counter-clockwise 1/4 turn to disengage bayonet from facepiece
lens.
4. Withdraw center adapter from lens center port.
Fig. 12 Fig. 14
Fig. 13 Figure 15
To install the center adapter into the facepiece
1. Remove the 6881 DIN air director from the 6883 DIN base.
2. Align tabs on center adapter base with notches in center port of facepiece lens.
3. Slide adapter into lens port (Fig. 14).
4. Grasp center adapter at cover and twist clockwise 1/4 turn to stop. Be certain center adapter gasket is
properly in place and sealed, and that the adapter assembly is fully engaged.
5. Align the lug at the bottom of the 6881 air director with the slot at the bottom of the 6883 DIN port base
(Fig. 13). Slide forward and press the center knob until the locking tab clicks into place.
6. Replace nose cup assembly, where applicable. Refer to the table in 3M™ Nose Cup Assembly
Replacement section in these instructions.
7. Attach the 3M™ 6880 Bayonet Caps to side inlet ports on the facepiece if using in one of the following 3M
configurations: belt-mounted or face-mounted PAPR systems, or the responder cartridge or canister in
the negative pressure mode.