Comfort Band; Headband And Cradle Assembly; Adjusting The Headband - 3M Airstream AS-400LBC Directives D'utilisation

Comfort Band

Removal
Remove the faceseal as described above. Peel the hook and loop fasteners at each end of the comfort
band and unfold the comfort band from the headband.
Replacement
Wrap the comfort band (with the slits opening down) around the front of the headband. Refasten the
hook and loop tabs so they are on the outside of the headband.

Headband and Cradle Assembly

Removal
Pull each of the four retaining anchors on the cradle assembly upward from its slot in the headgear.
Unbutton the headband at the four slots attaching it to the cradle assembly.
Replacement
Lay the cradle assembly upside down on the work surface noting the orientation as determined by
the letters molded on the cradle retaining buttons (F = Front, B = Back). Place the headband on top of
the cradle assembly in the same orientation. The size-adjustment buckle belongs in the back. (Fig.24)
Insert the four buttons into the appropriate height adjustment slot from the inside so that the head of
the button ends up on the outside of the headband (Fig. 25).
B F
Fig. 24
Ensure that all anchors are firmly in place, that the cradle assembly straps are not twisted and are of
equal length (Fig. 26).
Push each of the four retaining anchors on the cradle assembly into its corresponding slot in the
headgear (Fig. 27).
23

Adjusting the Headband

The adjustable headband and cradle assembly help afford maximum comfort around the head and
maintain the proper balance in all directions. Adjust the headband and cradle assembly for head size
and proper fit of the faceseal(s) as follows:
– Squeeze both edges of the buckle to open the headband (Fig.28).
– With the headgear assembly on your head, pull the free end of the headband through the buckle
until it fits firmly and comfortably.
– Adjust the orientation of the headgear so that there is clearance between the chin and the air vents
in the faceseal.
– After adjusting the orientation of the headgear, check the position of the headband around the head.
If the position of the headband does not feel comfortable and secure, the front and rear height can
be adjusted independently by relocating the buttons in the slots that connect the cradle assembly
to the headband. Adjusting the headband position does not affect the height that the headgear rests
above the head. The cradle suspension is not adjustable (Fig.29).
Fig. 25
Incorrect fitting of the headband/cradle assembly may reduce head protection provided by the
headgear, possibly rendering it totally ineffective, resulting in serious injury or death.
Fig. 26
Fig. 28
WARNING
24
Fig. 27
Fig. 29