Figure 6-6.-MCU-2/P mask and accessories.
Mask accessories (fig. 6-6) include a carrier,
outserts, a waterproofing bag, and a faceform.
SELECTION OF MASK SIZE. T he
MCU-2/P mask comes in three sizes: small,
medium, and large. Correct selection of the
proper mask size is essential for maximum
protection. A face length measurement using a
special caliper is made before the mask is issued.
MASK ADJUSTMENT AND PREPARA-
TION. A correctly adjusted mask is necessary
for a proper fit that will prevent leaks and be as
comfortable as possible. To adjust the mask and
prepare it for use (upon issue), you should use
the following procedures:
1. Remove one canister from the shipping
container and screw it onto the facepiece.
Loosen the straps of the head harness. Be
sure the strap end tabs are about 1 inch
from the buckles.
Remove the outsert, if mounted.
Pull the head harness over the front of the
Hold the outlet valve assembly in the palm
of one hand. Using the free hand, push any
forehead hair aside or back. Place the mask
against the face, forcing the chin cup very
tightly against the chin. Pull the head
harness over the head using the quick-don
Using a circular massaging motion, push
the mask as high on the face as possible.
Ensure that the mask is centered. Hold in
this position with one hand while tightening
the temple straps.
Ensure that the head pad is centered at the
high point of the rear of the head.