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12
Donning and Adjustment
Proper donning is crucial when using any piece of diving equipment, even
more so with the Guardian FFM. An improperly adjusted mask will result
in jaw fatigue, increased air consumption, leaking, and an overall poor fit.
Donning correctly starts with understanding how the mask fits. The mask
comes in a single size designed to fit the widest range of facial dimensions
possible. First and foremost, you have to start with the
chin
. The mask has
to be fitted to the chin first; the rest of the mask will seal to the face where
it lays.
With the mask straps fully extended, move
the communications (either the Buddy
Phone or earphone and microphone
assembly) as far as possible to the rear
of the straps to prevent them from binding
against the buckles. Open the lower straps
and bring the mask and harness over your
head (Figure 12). Ensure the harness is
straight and the center is low on the back
of your head.
Hold the mask to your face with one hand
and snug the lower (jaw) straps one at a
time, switching hands to accommodate
tightening the other. Pull the straps toward
the back of your head,
not
out to the side. Attempt to tighten the straps
evenly to prevent pulling the back of the head harness off center. Do not
overtighten.
Next, snug the temple straps evenly as
well. If necessary, tighten the top strap just
enough to pull the top of the skirt snug to
your forehead. DO NOT OVERTIGHTEN
THE TOP STRAP! This can result in jaw
fatigue after just a short period of time. Now,
wiggle the mask on your face to ensure the
mask is in proper position and centered
with no stress points. Evenly snug the
straps (Figure 13) to the desired tension,
again not overtightening the straps. The
mask should be comfortable on your face.
Figure 12: Open Lower Straps
and Bring Over Head
Figure 13: Snug Evenly
Содержание Guardian
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