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Extended Duration Breathing Apparatus (EDBA) Instructor Reference Guide - February 2018, Version 1.0
@
NARU_Education
www.narueducationcentre.org.uk
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The Facial Protection System (FPS)
7000 conforms to EN136 and
gives 70% vision.
Rubber on the facemask is
hypoallergenic.
Made from neoprene with a double
reflex seal to help prevent air leaks.
Speech diaphragm.
Large, distortion free, anti-scratch
polycarbonate visor which is heat
and impact resistant for distortion -
free vision and distributes air evenly
to avoid fogging.
Grade 1 heat and impact resistant.
Available in three sizes, small,
medium/large and large.
Inner Mask
Oral-nasal inner mask made
of neoprene.
Consists of two mushroom valves
to allow intake of cylinder air and
reduces on dead air space which
prevent the build-up of carbon
dioxide and condensation forming
inside the mask.
Three sizes of oro-nasal inner
mask 1,2,3.
Additional Features
Robust push-to-connect design
which allows 360
⁰
rotation of lung
demand valve (LDV).
5-point spider head harness with
stainless steel buckles to secure the
mask around the wearers head.
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There are two sizes of spider harness:
small and medium/large
Incorporates speech diaphragm.
Push connector for LDV.
Neck strap consists of standby button
to hold facemask in a secure and safe
manner whilst the facemask is not
being worn.
Breathing Cycle P-connector
(positive pressure)
Inhalation:
By lung demand valve delivered air
enters via inhalation valve.
Flushing of the visor.
Control valves open.
Arriving of the air inside the inner
mask via the control valves.
Exhalation:
Inhalation valve closed.
Control valves closed.
Spring-loaded exhalation valve
opens in the chin area.
Exhaled air releases to surrounding
atmosphere.
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