Essex Electronics EPOS Instruction manual

DBA ESSEX PB&R CORPORATION
4150 CARR LANE COURT ST. LOUIS, MO 63119
[phone] [phone] FAX [phone]
Revision: 4 Dated: 1/01/2012
Emergency Passenger Oxygen System (EPOS)
TECHNICAL DATA PACKAGE

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
2
TABLE OF CONTENTS
TITLE PAGE
REVISION RECORD SHEET 3
GENERAL INFORMATION 4
MODEL NUMBERS 5
SIZE 8
WEIGHT 8
PACKAGING 8
SHELF LIFE 8
DONNING 8
OXYGEN 9
CARBON DIOXIDE 9
PROTECTION FACTOR 9
SIZING/FITTING 9
VISIBILITY 9
STATEMENT OF WARRANTY 10
INSIDE HOOD TEMPERATURE 11
OPERATING TEMPERATURE RANGE 11
STOWAGE TEMPERATURE RANGE 11
INSPECTION 11
THERMAL PROPERTIES 13
MATERIALS OF CONSTRUCTION 13
PERFORMANCE 14
EPOS DONNING PROCEDURE 15
EPOS TRAINING UNIT 15
ESSEX EPOS DONNING ILLUSTRATION 18
ESSEX EPOS DONNING STEPS 19
WARNING 19

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
3
Revision Record Sheet
Rev
#
Date
Description of Revision
1
12/14/04
Added Revision Sheet, page 3 to manual; revised Figure 3, Donning Illustration & Donning
Steps on page 17 to accessing EPOS unit without first removing barrier pouch from stowage
pouch; added Operating Steps to Training Unit section on page 15; added Statement of
Warranty; and re-numbered all pages accordingly.
2
8/04/06
Revision includes: changed all address and phone number references to the new, St. Louis,
Mo. location; adding new AS9100B & ISO9001-200 Certified logo; and revised Statement of
Warranty that changed the warranty period from 10 years to 10 years 6 months and added
an additional “foregoing warranty statement”.
3
8/01/11
Revisions Include: changed all address references to new facility location;
4
01/01/12
Changed Company Name from Essex PB&R Corporation to Essex Industries dba Essex PB&R
Corporation.

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
4
GENERAL INFORMATION
Intended Use: The Essex Emergency Passenger Oxygen System (EPOS) is a self contained
protective breathing device intended for trained individuals in military aircraft emergencies
such as decompressions, fire, evacuation, rescue, smoke filled cabins, toxic fumes, and
hazardous cargo spills.
Duration of Use: All emergency rescue and escape situations are different, and it is not possible
to provide an exact duration time for all situations. Also, the size of the EPOS user will affect
usable life, with heavier individuals consuming oxygen more rapidly. However, for an average
male, the following typical escape situations are useful in predicting how long the EPOS will last:
* Sitting, waiting to be rescued Up to 60 minutes
* Waiting 17 minutes to be rescued, then rapid evacuation Up to 21 minutes
* Moderate walking (3 mph) Up to 18 minutes
* Rapidly walking, on a flat, out of a building Up to 8 minutes
* Rapidly walking up 15 flights of stairs Up to 3 minutes
Figure 1 - is a graphical representation of actual interior hood conditions while a victim, with
the EPOS on, is sitting, waiting to evacuate. After help has arrived to assist the victim, or the
aircraft has landed, the victim has ample protection remaining to quickly flee from the scene of
the emergency. In this situation, carbon dioxide has built up to 5.5%. High levels of carbon
dioxide will be detected by the body's natural aversion, producing a feeling of high anxiety.
This is an automatic signal it is time to remove the EPOS.
EPOS Performance Sitting, Then Evacuation
0
1
2
3
4
5
6
7
8
9
10
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (min)
% Carbon Dioxide
0
10
20
30
40
50
60
70
% Oxygen
% CO2
% O2
Figure 1: Duration of the EPOS while the User is Seated, waiting to Evacuate

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
5
Figure 2 - depicts the same person, seated with the EPOS on, possibly trapped in a
contaminated environment. Note the duration of protection is approximately one hour. The
oxygen concentration has fallen to near 20%, the same as found in ambient air, and is
continuing to decrease. Whereas high levels of carbon dioxide will be detected by the body’s
natural aversion, low levels of oxygen will be easily recognized because the hood will no longer
be inflated, and the hood film will be begin to press around the face of the user. In this
situation, the EPOS will provide ample time for a trapped user to sustain breathing until he or
she can be reached.
EPOS Sitting Waiting to be Rescued
0
1
2
3
4
5
6
7
8
9
10
0246810 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
Time (min)
% Carbon Dioxide
0
10
20
30
40
50
60
% Oxygen
% CO2
% O2
Figure 2: EPOS Performance Sitting, Waiting for Rescue
MODEL NUMBERS
MR-10093AF - Emergency Passenger Oxygen System, Training Unit
MR-10095AF - Emergency Passenger Oxygen System Packaged in Cloth Soft Pack
MR-10096AF - Emergency Passenger Oxygen System Packaged in Cloth Soft Pack, with Clear
Inspection Window
MR-10097AF - Emergency Passenger Oxygen System Packaged in Cloth Soft Pack, with Clear
Inspection Window & Carrying Strap

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
6
EPOS Training Unit
Model # MR-10093AF
EPOS in Cloth Soft Pack
Model # MR-10095AF

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
7
EPOS in Cloth Soft Pack with Clear Inspection Window
Model # MR-10096AF
EPOS in Cloth Soft Pack with Clear Inspection Window and Carry Strap
Model # MR-10097AF

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
8
SIZE
7 1/2 in. x 9 1/2 in. x 2 in.
WEIGHT
1 1/2 pounds
PACKAGING
The EPOS is folded and sealed inside a multi-laminate barrier pouch. There are two versions of
the barrier pouch: one is a clear multi-laminate pouch and the second is an opaque multi-
laminate pouch (as shown below). Both pouches have the same form fit and function. The
barrier pouch is then packaged inside a rugged fabric carrying case. The case has
accommodations for belt mounting as well as a carry strap, and a clear window for inspecting
pertinent information.
EPOS Sealed in a Clear Pouch EPOS Sealed in Foil Laminate Pouch w/ Window
(Configuration prior to mid-2004) (Configuration after mid-2004)
SHELF LIFE
10-years 6-months from the Date of Manufacture
DONNING
Less than 15 seconds, from retrieval through donning. For Detailed Donning Procedures see
page 19 and Figure 3, on page 18 of this manual.

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
9
OXYGEN
The EPOS is a closed circuit rebreather system. Oxygen flows into the hood, is breathed and
rebreathed by the user. The oxygen concentration inside the hood may reach 60%, depending
on workload, and will then decrease for the duration of use. Oxygen flow is initiated by semi-
automatic activation (see Oxygen System on page 13).
Oxygen was selected as the breathable atmosphere because of weight and volume
considerations. During respiration, oxygen is removed from the air and converted to carbon
dioxide, then exhaled back into the air. If compressed air were used instead of oxygen, the air
inside the hood would need to be constantly replenished to maintain the oxygen content at a
life-supporting level. Because the EPOS uses Aviator’s Grade Oxygen, the exhaled air can be
rebreathed once the carbon dioxide is removed. The EPOS contains 18 L of oxygen at 3,000
psig.
CARBON DIOXIDE
Carbon dioxide is a natural byproduct of respiration. Because the EPOS is a closed circuit
system, it is necessary to remove the carbon dioxide that builds up inside the hood. This is
accomplished with a unique, patented passive scrubber. The average carbon dioxide
concentration will be kept below 4% for the duration of use, but may reach a momentary peak
of 7%.
PROTECTION FACTOR
Users of the EPOS are not affected by carbon monoxide and the other toxic gases produced in a
fire, nor do chemical fumes from the spill of hazardous materials affect them. Unlike a filter
mask, which must clean the poisonous outside air to make it fit to breathe, the EPOS provides
its own source of clean breathable air.
The measure of cleanliness of the breathable air is called Protection Factor. A Protection Factor
of 20, for example, means that the air inside the hood is 20 times cleaner than the air outside
the hood. NIOSH requires a minimum Protection Factor of 20. The Protection Factor for the
Essex line of products, using the same hood/neck seal design, is at least 260, or 13 times better
than required by NIOSH.
SIZING/FITTING
One size fits all adults with an 11 to 19 inch neck without adjustment.
VISIBILITY
360 degrees

DBA Essex PB&R Corporation
Technical Data Package for the EPOS
Revision: 4 Dated: 1/01/2012
10
STATEMENT OF WARRANTY FOR EMERGENCY PASSENGER OXYGEN SYSTEM (EPOS)
Essex Industries dba Essex PB&R Corporation warrants that: (1) The Essex Emergency
Passenger Oxygen System (EPOS) (hereinafter referred to as the “unit”) will remain free from
defects in material and workmanship, whether patent or latent, for up to the replace by date
which is a period of ten (10) years and six (6) months from the date of manufacture when
properly stowed in containers supplied or approved by Essex Industries dba Essex PB&R
Corporation.
For those units equipped with a humidity indicator, the loss of vacuum in the inner packaging
does not render the unit unserviceable. Units with barrier pouches that have lost vacuum
remain serviceable as long as the humidity indicator remains blue. Although if a unit is found to
have a damaged barrier pouch, e.g. cut, puncture or other damage, the unit should be pulled
from service and sent back for repair at the customer’s expense.
The liability of Essex Industries dba Essex PB&R Corporation for any defect in any unit, and the
sole and exclusive remedy of the buyer, shall be limited to the repair or replacement of the
defective unit, or a refund of the original purchase price (pro-rated in proportion to the ten (10)
year and six (6) month warranty) at the sole discretion of Essex Industries dba Essex PB&R
Corporation. The obligation to repair, replace, or provide a pro-rated refund shall terminate ten
(10) years and six (6) months after the date of manufacture of the unit.
This warranty is in lieu of all other warranties and representations, expressed or implied, and all
other obligations and liabilities of Essex Industries dba Essex PB&R Corporation. Correction of
defects, in the manner and for the period of time provided above, shall constitute fulfillment of
all liabilities of Essex Industries dba Essex PB&R Corporation whether based on warranty, tort,
contract or otherwise. Under no circumstances shall Essex Industries dba Essex PB&R
Corporation be liable for any punitive, special, incidental or consequential damages.
This warranty shall not apply to any unit that has been stowed in an unauthorized container,
which has been repaired or altered by anyone other than Essex Industries dba Essex PB&R
Corporation, or which has been subject to misuse due to negligence or accident, or the failure
to use the unit in accordance with the Product’s Manual supplied by Essex Industries dba Essex
PB&R Corporation.
THE FOREGOING WARRANTIES ARE IN LIEU OF ALL WARRANTIES, EITHER EXPRESSED OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY,
NON-INFRINGEMENT, OR FITNESS FOR A PARTICULAR PURPOSE, AND OF ANY OTHER
OBLIGATION ON THE PART OF ESSEX INDUSTRIES DBA ESSEX PB&R CORPORATION.