3M Ultimate FX Manual Del Usuario página 12

Bayonet Assembly Replacement
The bayonet assembly consists of the bayonet ring, bayonet, and inhalation gasket.
1. Remove the nose cup assembly by grasping the nose cup below the inhalation valve and gently pulling up and away from lens assembly (Fig. 20).
2. Remove bayonet ring by rotating counter clockwise 1/4 turn (Fig. 23).
3. Remove bayonet from lens assembly (Fig. 24).
4. Align key on new bayonet with slot on lens assembly and hold firmly in place.
5. Align lugs on ring with slots on bayonets and rotate clockwise 1/4 turn until firm stop.
6. Replace nose cup assembly (Fig. 21).
Inhalation Valve Replacement
Inhalation valves are located on bayonet assemblies at the facepiece inhalation ports and inside the nose cup inhalation ports. These valves should be
inspected before each respirator use and replaced whenever valves become damaged or lost.
1. Remove existing valve(s) by grasping valve and pulling valve stem out from valve seat.
2. Install new valve(s) onto valve seat(s) by pushing through valve stem seat(s). Be certain valve stem(s) is fully engaged through valve seat(s), lays flat,
and moves freely (spins).
Head Harness Assembly Replacement
1. Remove existing head harness by unsnapping each buckle from the buttons (Fig. 25).
2. Pull the end tabs of the head harness, at an angle, out through the buckles. Note the orientation of the head harness tabs and buckles for
re-assembly.
3. Place the head harness down on a flat surface with the 3M logo facing up (Fig. 26).
4. Thread the end tabs of the head harness through the buckles and pull each through until the end tab is completely through the buckle.
5. Place the facepiece lens down on a flat surface and lay the new head harness and buckle assembly over the facepiece. The head harness should be
assembled with the 3M logo facing up.
6. Snap each buckle into corresponding button, ensuring that straps are not twisted.
Lens Frame Assembly Replacement
The lens frame assembly consists of a lens frame, nut, and screw.
1. Remove the Phillips screw from frame. Pull the frame away from the faceseal (Fig. 27).
2. Position new frame, aligning marks top and bottom. Install and securely tighten screw. Make certain alignment marks are properly aligned top and
bottom with all components (Fig. 28).
Fig. 23
Fig. 25
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Fig. 24
Fig. 26