3M 54146 Fiche d'instruction - Page 7

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6898/37006*

Lens Assembly

Replacement Instructions

Important: Keep these User Instructions for reference

*37006 is a catalog number only. NIOSH approved as 3M

See the 3M

Full Facepiece 6000 User Instructions for approval label.

38-9018-9555-7 (Supersedes 38-9018-7177-2)

Fig. 1

The 3M

6898 Lens Assembly consists of a hard coated polycarbonate lens with installed bayonet

attachment inhalation port fittings, inhalation valves and inhalation port filter/cartridge gaskets.

The lens is replaceable by following these steps:

1. Remove nose cup assembly from inside facepiece. (Fig. 1)

2. Remove center adapter assembly by turning counter-clockwise 1⁄4 turn and withdrawing from lens center

port. (Fig. 2)

Fig. 3

3. Remove the (2) phillips screws from the lens/faceseal frame. Pull the frame top and bottom away from

faceseal.

4. Remove faceseal from lens.

5. Place new lens and faceseal together aligning marks at top and bottom. Position top and bottom frame,

again aligning marks top and bottom. (Fig. 3) Install and securely tighten screws. Make certain

alignment marks are properly aligned top and bottom with all components.

6. Install center adapter assembly.

7. Replace nose cup assembly.

Fig. 2

Lens Assembly 6898.