Embraer EMB145 Operation Manual page 2178

OXYGEN
EROS (AIR LIQUIDE) PBE UNIT
Operation automatically starts when the hood is donned, with no
additional device actuation. An actuation lever is pushed up to a
vertical position by user head and thus breaks a frangible valve that
releases oxygen into the hood. User can hear oxygen flow release
inside the hood..
Due to the neoprene neck collar, phonic membrane, and regulated
overpressure inside the hood, no toxic gases or smoke can enter the
hood.
The rigid visor cannot be folded and features an anti-fogging treatment
for good visibility. The phonic membrane allows good communications
characteristics. The hood protects user's head from flames or
incandescent objects that may fall from burning structures or interiors
parts.
The smoke hood is stowed inside a vacuum-sealed aluminized bag,
itself contained and attached to the bottom, internal side of a rigid flat
orange box that is provided with a green "good condition" indicator,
which indicates that the mentioned bag was not opened yet. Should the
indicator be red, this indicates that there no longer exists a vacuum
inside the bag and the PBE unit must be replaced.
Extraction of the hood automatically tears the aluminized container bag
and thus allows a direct presentation of the hood.
OPERATION
When use of hood is needed:
1 - Take the box and push the spring lock.
2 - Pull the box cover upward.
3 - Extract the hood and deploy the hood by a brisk downward
movement.
4 - Open the neck collar seal by placing thumbs in front of the red
pointers to facilitate hood donning, especially when spectacles are
worn by user.
5 - Don the hood. Next, pick up the fire extinguisher and combat the
onboard fire and/or smoke.
Page
2-16-25
AIRPLANE
OPERATIONS
MANUAL
Code
2 01
OCTOBER 02, 2001