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Particulate fi lters must be replaced if they become damaged, soiled or if increased breathing resistance occurs. N-series
fi lters should not be used in environments containing oils. R-series fi lters may be limited to 8 hours of continuous
or intermittent use if oil aerosols are present. In environments containing only oil aerosols, P-series fi lters should be
replaced after 40 hours of use or 30 days, whichever is fi rst.
REPLACEMENT PARTS INSTRUCTIONS
3M™ Ultimate FX Full Facepiece Assembly FF-400
The facepiece assembly consists of the head harness assembly, nose cup assembly, speaking diaphragm assembly,
exhalation valve assembly, lens assembly, faceseal (small, medium or large), frame assembly (frame, nut and screw),
bayonet assemblies and exhalation valve cover. To disassemble lens assembly from faceseal, remove the Phillips screw
from frame, pull the frame away from the faceseal and remove faceseal from lens assembly.
Valve Cover Replacement
1. Remove valve cover by depressing bottom of cover with thumb and sliding cover up, parallel with lens (Fig. 18).
2. Replace valve cover by placing open end at top of exhalation valve assembly, guide tabs underneath valve cover
assembly and slide downward until the valve cover snaps in place.
Exhalation Valve Assembly Replacement
1. Remove valve cover by depressing bottom of cover with thumb and sliding cover up, parallel with lens (Fig. 18).
2. Remove exhalation valve assembly by turning counter clockwise 1/4 turn (Fig. 19).
3. Replace exhalation valve assembly by aligning lugs with exhalation valve assembly opening in lens and turning
clockwise 1/4 turn until fi rm stop.
4. Replace valve cover assembly.
Exhalation Valve Replacement
1. Remove valve cover by depressing bottom of cover with thumb and sliding cover up, parallel with lens (Fig. 18).
2. Remove exhalation valve assembly by turning counter clockwise 1/4 turn (Fig. 19).
3. Grasp valve and pull each valve stem out from valve seat.
4. Inspect valve seat making certain it is clean and in good condition.
5. Place new exhalation valve replacement over the exhalation port by inserting stems and pulling through from the
opposite side until they are both snapped in place.
6. Replace exhalation valve assembly.
7. Replace valve cover.
NOTE: Conduct a negative pressure user seal check to ensure exhalation valve is functioning properly.
Nose Cup Assembly Replacement
The nose cup assembly consists of a nose cup and inhalation valves. It is designed to install directly to the lens and
comfortably fi t over the respirator wearer's mouth and nose to aid in purging exhaled breath and prevent lens fogging.
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. To replace, position nose cup assembly onto lens assembly by aligning hard plastic ring on nose cup with lens
assembly and pressing fi rmly on center tabs until bottom nose cup tabs snap in place (Fig. 21).
3. Press down on top of nose cup ring until tabs snap in place.
Speaking Diaphragm Assembly Replacement
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 valve cover by depressing bottom of cover with thumb and sliding cover up, parallel with lens (Fig. 18).
3. Remove exhalation valve assembly by turning counter clockwise 1/4 turn.
4. Remove speaking diaphragm assembly by turning counter clockwise 1/4 turn (Fig. 22).
5. Replace speaking diaphragm assembly by aligning speaking diaphragm lugs with speaking diaphragm opening in
lens assembly.
6. Turn clockwise 1/4 turn until fi rm stop.
7. Replace exhalation valve assembly.
8. Replace valve cover assembly.
9. Replace nose cup assembly (Fig. 21).
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 fi rmly in place.
5. Align lugs on ring with slots on bayonets and rotate clockwise 1/4 turn until fi rm 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 fl at, 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 fl at 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 fl at 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).
Lens Assembly Replacement
The lens assembly consists of a hard-coated polycarbonate lens.
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 the valve cover by depressing bottom of cover with thumb and sliding cover up, parallel with lens (Fig. 18).
3. Remove exhalation valve assembly by turning counter-clockwise 1/4 turn and withdrawing from lens center port
(Fig. 19).
4. Remove speaking diaphragm by turning counter clockwise 1/4 turn (Fig. 22).
5. Remove bayonet assemblies by rotating bayonet rings counter clockwise 1/4 turn (Fig. 23) and removing bayonets
from the lens assembly (Fig. 24).
6. Remove the Phillips screw from frame. Pull the frame away from the faceseal (Fig. 27).
7. Remove faceseal from lens.
8. Place new lens and faceseal together aligning marks at top and bottom. Position frame, again 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).
9. Install speaking diaphragm.
10. Install exhalation valve assembly.
11. Replace exhalation valve cover.
12. Replace bayonet assemblies.
13. Replace nose cup assembly (Fig. 21).
3M™ Ultimate FX Full Facepiece FF-400 Replacement Parts and Accessories
Number
FF-401
FF-402
FF-403
Number
Description
FF-400-01
Head Harness Buckle
FF-400-02
Head Harness Button
FF-400-03
Lens Assembly
FF-400-04
Head Harness
FF-400-05
Frame Assembly w/ Screw
FF-400-06
Comfort Cradle
FF-400-07
Exhalation Valve Assembly
FF-400-08
Bayonet Assembly Inhalation Valve
FF-400-09
Exhalation Valve Cover (Standard)
FF-400-10
Exhalation Valve Cover (Solid)
FF-400-11
Nose Cup Assembly
FF-400-13
Speaking Diaphragm Assembly
FF-400-20
Spectacle Kit
7582
Inhalation Valve
7583
3M™ Cool Flow™ Exhalation Valve
Number
FF-400-15
FF-400-17
504
601
For Compliance in Brazil NOTE:
1. In Brazil, according to the Respiratory Protection Program of the Ministry of Labor, do not use when
concentrations of contaminants are greater than 100 times the permissible exposure limit in air-purifying mode.
2. Do not use in defi cient or enriched oxygen atmospheres.
3. Storage, Transportation and Care: store in a clean and dry place and away from contaminants and extreme
temperature and humidity.
4. The components of this respirator are made of materials which are not expected to cause adverse health effects.
5. It is necessary to have special care to use this product in explosives atmospheres.
6. In Brazil do not use powered air-purifying respirators if airfl ow is less than 120 lpm for tight fi tting facepieces or
170 lpm for hoods and/or helmets.
Product Manufacturing Date
The parts of the product show markings that bring information of manufacturing date, and its reading is described as
in the example below:
Date Code = 12th month 1999 (12/99)
12
11
1
10
2
9
9
9
3
8
4
7 6 5
Description
Small
Medium
Large
FF-400-06
FF-400-01
FF-400-05
FF-400-11
FF-400-03
7582
FF-400-08
7583
FF-400-09
FF-400-07
FF-400-13
FF-400-10
Description
Lens Cover
Semi-Permanent Lens Cover
Respirator Cleaning Wipes
Quantitative Fit Test Adapter
FF-400-04
FF-400-02
Fig. 29
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