3M FR-M40 - Manual (Page 10)

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4. Remove the side voicemitter retainer by unscrewing counter clockwise using the D-ring voicemitter
removal tool or a standard 1 3/16 x1 inch D-ring or similar tool.
5. Remove the side voicemitter from the mask assembly by pressing from the inside of the mask assembly.
Remove the gasket from the sideport housing on the mask exterior.
6. Insert the inhalation valve body seat into the opposite sideport, with the inhalation valve facing IN, at a
slight angle into the sideport of the facepiece.
7. After initially catching a portion of this groove on the metal flange, press the valve body seat down (all
around the circumference) into the facepiece sideport until the valve body seat is fully seated in the
sideport.
8. To verify that the valve body seat has been properly re-installed, grasp the two tabs sticking straight up
from the valve body seat and try to turn the entire valve body seat in the port. If it turns freely, the valve
body seat has been correctly re-installed.
9. Position the gasket in the sideport opposite the inhalation valve kit.
10. Install the side voicemitter with the four beaded side facing out.
11. Position s ide voicemitter retainer in the sideport.
12. Tighten the voicemitter retainer by turning clockwise with the D-ring voicemitter removal tool or a
standard 1 3 /16 x1 inch D-ring or similar tool.
13. Install the cartridge, now on the opposite side, by turning clockwise.
INSPECTION PROCEDURE
This respirator must be inspected before each use to ensure it is in good operating
condition. Any damaged or defective parts must be replaced before use. Failure to do
so may affect respirator performance and may result in sickness or death.
1. Check the faceseal for cracks, tears and dirt. Examine the inhalation valve for signs of distortion,
cracking or tearing.
2. Check that the head straps are intact and have good elasticity.
3. Examine all plastic parts and gaskets for signs of cracking or fatiguing and replace if necessary.
4. Remove the exhalation valve cover by grasping the tab at the bottom of the exhalation valve cover
and lifting. Examine the exhalation valve and seat for signs of dirt, distortion, cracks or tears. Do
not use tissue paper or a paper towel to remove dirt or moisture from exhalation valve cover,
exhalation valve or valve seat. Paper may leave behind particles, which may lodge in the valve seat
and prevent proper operation (the valve will leak). A cheese cloth may be used for cleaning.
Replace the valve if necessary. Secure the exhalation valve cover prior to use.
5. Examine the lenses for signs of cracking or other damage.
6. Check to see that the front and side voicemitters are functioning properly. If speech is fairly clear,
they are functioning.
7. Check to see that the internal and external drinking tubes are functioning properly. This can be
done by dipping the external drink tube quick disconnect into a cup of water and blowing. If no
bubbles are seen, the drinking system is functioning properly. If bubbles are seen, repair or
replace the facepiece.