DONNING
3. Pull the back of har-
ness downward until
centered at the back of
the head.
4. Tighten the two lower
straps first by pulling
them straight back, not
out. Tighten the face-
piece until the mask is
snug against the face.
5. Tighten the two side
temple straps in the
same manner as
described in step 4.
Ensure that the face-
piece tabs are not
tucked under the face
seal.
6. Ensure the back of the
harness is centered on
the back of the head
and that the facepiece
seal provides uniform
pressure on the face at
all points. Readjust the
straps if needed.
FACEPIECE FIT CHECK
NOTE:
Check the inhalation valve by inhaling. If the face-
piece does not provide sufficient flow of air, do not use
facepiece. The facepiece must be repaired or replaced.
1. Check facepiece fit,
a. Hold the palm of the
hand over the face-
piece inlet adapter.
b. Take a deep breath
and hold it for at
least 10 seconds.
The facepiece
should collapse and
stay collapsed
against the face. If it
does not, readjust
the facepiece and test again.
If this does not cor-
rect the leak, do not use the facepiece.
2. Test the exhalation valve.
a. Take a deep breath and hold it.
b. Block the facepiece inlet adapter with the palm of
the hand and exhale. If the exhalation valve is stuck,
a heavy rush of air around the facepiece may be
noticed. A sharp exhalation of air may be needed to
open the valve. If this does not release the valve, do
not use the facepiece.
This device may not seal properly to the face if a
beard, gross sideburns or similar physical characteris-
tics (see NFPA-1500 and ANSI Z88.2) exist. An improp-
er facial seal may allow contaminants to leak into the
facepiece, reducing or eliminating respiratory protec-
tion. Do not use this device if such conditions exist.
The face-to-facepiece seal must be tested before
each use. Never remove the facepiece except in a
safe, non hazardous non-toxic atmosphere. Misuse
can result in serious injury or death.
3. Open the cylinder valve
fully. Push in on the
side buttons of the
Firehawk Regulator to
stop air flow.
4. Listen for any hissing or popping sounds from the
Audi-Larm Alarm. If heard, return the air mask to an
MSA trained or certified repairperson.
17
TAL 1705 (L) Rev. 18 - 10082858
Summary of Contents for FireHawk M7
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