Inspection & Maintenance; Replacement Parts And Accessories; M-925 And M-927 Visors - 3M Versaflo M Serie Directives D'utilisation

InSPECtIon & MaIntEnanCE
WarnInG
1. Failure to follow these instructions may reduce respirator performance, overexpose you to
contaminants, and may result in sickness or death.
a. Do not use with parts or accessories other than those manufactured by 3M as described in
these User Instructions or on the NIOSH approval label for this respirator.
2. Failure to follow these instructions may reduce the capability of the M-300 and M-400 Series
Headgear shell to withstand impact and penetration and may result in serious injury or death:
a. Do not use beyond the maximum life of the product.
Before and after each use, inspect entire headgear for signs of damage or wear including dents,
rips, cracks, color changes, chalking, fading, flaking and penetration. Carefully inspect all headgear
components including the following:
• Visor and visor frame: Look for scratches or other visual distortions that could make it difficult to
see through the visor. Look for signs that the visor has warped or cracked. A warped visor may not
fit properly into the headgear and on the M-400 Series may not seal against the jaw. Ensure the
visor stays firmly in the up (open) and down (closed) positions. Ensure visor buttons are present,
firmly secured, and flush to the visor frame. Examine the visor gasket for tears or other damage.
Gasket should be pliable and not brittle.
• Head suspension: Look for cracks, rips, fading, or other damage. Ensure head suspension ratchet
operates properly. Inspect the web straps for rips, tears, fraying, or fading. Look for worn stitching.
Ensure straps are properly attached.
• Faceseal or inner and outer shroud: Look for tears, holes, stretched elastic, gaps in seams,
damage to stitching or other damage. Examine the gasket for tears or other damage. The gasket
should be pliable and not brittle. Ensure faceseal or inner and outer shroud is securely and properly
attached. Inspect the zipper of the inner shroud and ensure shroud is completely attached to outer
shroud.
• Headgear shell: Look for visible damage including dents, cracks, color change, chalking or fading.
Any M-300/M-400 Series Headgear subjected to severe impact should be removed from service
and replaced even if damage is not readily apparent.
• Forehead seals: Ensure they are properly and securely attached and are free from damage.
• Breathing tube: Look for tears, holes or cracks. Bend the tube to verify that it is flexible. Ensure
the gasket located in the QRS is present and not damaged. Inspect the gasket located on the
bayonet end of the breathing tube (i.e. end that connects to the airsource) for signs of damage. The
breathing tube should fit firmly into the airsource connection.
• PaPr blower assembly: Inspect according to the User Instructions for your specific airsource.
Inspect date codes on visors, shells, and other plastic components and ensure parts have not
exceeded their maximum life. See Expected Life section of these User Instructions for additional
information.
If you discover any signs of wear and/or damage, remove headgear from use and service or
replace as appropriate. Failure to do so may affect respirator performance and reduce the degree
of protection provided.
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rEPLaCEMEnt PartS and aCCESSorIES

replacement Parts
WarnInG
1. Failure to follow these instructions may reduce the capability of the M-Series visors to
withstand impact and penetration and may result in serious injury or death:
a. Ensure visor buttons are firmly secured and flush to the visor frame. Replace worn or
damaged parts.
2. Failure to follow these instructions may reduce respirator performance, overexpose you to
contaminants, and may result in sickness or death.
a. Always properly assemble and wear both the inner and outer shroud (M-400 Series)
b. Do not use with parts or accessories other than those manufactured by 3M as described in
these User Instructions or on the NIOSH approval label for this respirator.
3. Do not use the Head, Neck, and Shoulder cover or non-flame resistant faceseals and shrouds
around high heat, sparks or flames. Misuse use may result in serious injury or death.

M-925 and M-927 Visors

– With the visor frame in the down position (M-100 & M-300), release the visor frame buttons by
pushing the buttons outward from inside the visor frame, one "click" (Fig. 5a). Move the visor frame
to the up (open) position and pull on visor to remove from frame (Fig. 5b). If using the M-400, it may
be easier if the visor frame is in the up (open) position to release the buttons and remove the visor.
– With the visor in the up (open) position, install a new visor by inserting visor into the groove in the
frame, lining up the notches in the visor with the visor frame buttons. Ensure visor is fully seated in
the groove (Fig. 5b).
– Push visor frame buttons closed to lock visor in place. The buttons should make an audible "click"
when fully seated in the frame (Fig. 5c). Ensure visor buttons are firmly secured and flush to the
visor frame (Fig. 5d). If the buttons do not seat flush to frame, remove and reinsert.
– Ensure the visor gasket is present and securely inserted into the groove in the top of the visor frame
(See M-921 in this section).
Fig. 5a Fig. 5b
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