OCENCO M-20.2 User manual

Instructor’s Manual
for
M-20.2 EEBD
&
M-20.2T Training Model
Manual / Part No: 340021
Revision A, ECN 2368
July 30, 2001
Ocenco Incorporated
10225 82nd Avenue
Pleasant Prairie, Wisconsin 53158-5801
USA
Phone: [phone]
Fax: [phone]
www.ocenco-eebd.com
Page 1 of 14

TABLE OF CONTENTS
1. Introduction.................................................................................................................3
2. M-20.2 EEBD ............................................................................................................. 3
2.1. How the M-20.2 EEBD Works............................................................................... 3
2.2. How to Don the M-20.2 EEBD............................................................................... 6
2.3. How To Inspect the M-20.2 EEBD......................................................................... 6
2.4. How to Care for the M-20.2 EEBD ........................................................................ 7
2.5. When to Don the M-20.2 EEBD............................................................................. 8
2.6. Specifications.......................................................................................................... 8
2.6.1. Duration .......................................................................................................... 8
2.6.2. Five Factors that Affect Duration ................................................................... 8
2.6.3. Dimensions ..................................................................................................... 9
2.6.4. Weight............................................................................................................. 9
2.6.5. Storage Temperature....................................................................................... 9
2.6.6. Service Life..................................................................................................... 9
2.6.7. Conditions of Use ........................................................................................... 9
2.6.8. Disposal and Return Instructions.................................................................... 9
3. M-20.2T Training Model .......................................................................................... 10
3.1. Description of the M-20.2T Training Model ........................................................ 10
3.2. Theory of Operation.............................................................................................. 12
3.3. Cleaning the M-20.2T Training Model................................................................ 12
4. Training session Summary........................................................................................ 13
5. Related Information .................................................................................................. 13
5.1. Effects of Oxygen Deficiency............................................................................... 14
5.2. Effects of Carbon Monoxide................................................................................. 14
Page 2 of 14

1. Introduction
This manual and the enclosed video are tools for conducting training classes in the proper use and
inspection of the Ocenco M-20.2 EEBD. An M-20.2T training model is available for practicing the
opening, and donning of the M-20.2 EEBD.
The Ocenco M-20.2 EEBD can be belt worn or stored in a wall bracket. The Ocenco M-20.2 EEBD is a
self-contained, compressed oxygen, emergency escape breathing device (EEBD). The Ocenco M-20.2
EEBD instantly provides breathable air, independent of the surrounding atmosphere, to a person escaping
from toxic gas or an oxygen deficient atmosphere.
The Ocenco M-20.2 EEBD meets the International Convention For The Safety Of Life At Sea, SOLAS
1974, Chapter II-2 requirements for Emergency Escape Breathing Devices. The Ocenco M-20.2 EEBD
also meets the International Code For The Construction Of Ships Carrying Dangerous Chemicals In
Bulk (IBC code) and the International Code For The Construction Of Ships Carrying Liquefied Gases
In Bulk (IGC code) requirements for a self-contained breathing apparatus with a normal duration of service
of 15 minutes in maritime applications.
This Manual provides information on both the Ocenco M-20.2 EEBD and the Ocenco M-20.2T Training
Model. The Instructor should cover the following topics:
(1) How the M-20.2 EEBD works
(2) How to don the M-20.2 EEBD
(3) How to inspect the M-20.2 EEBD
(4) How to care for the M-20.2 EEBD
(5) When to don the M-20.2 EEBD
(6) location of M-20.2 EEBDs (see ships fire control plan)
2. M-20.2 EEBD
2.1. How the M-20.2 EEBD Works
Oxygen automatically flows from the cylinder to the breathing bag when the device is pulled
from its clear base.
During inhalation, and whenever the bag flattens, the oxygen regulator increases the oxygen flow
into the breathing bag.
During inhalation and exhalation, the lithium hydroxide scrubber absorbs carbon dioxide.
During inhalation, oxygen passes from the breathing bag through the scrubber and into the
mouthpiece.
During very low work rates, such as when the user is at rest waiting rescue, the oxygen regulator
supplies more oxygen than the user can consume. When this occurs, the excess gas automatically
vents through the relief valve.
The M-20.2 EEBD operates automatically. This includes the starting of the oxygen flow, the
increased oxygen flow rate during high work periods, and the venting of excess gas through the
relief valve.
Page 3 of 14

The components of the M-20.2 EEBD are: (see illustration on next page)
(1) Nose Clip - the yellow nose clip is permanently attached to the mouthpiece.
(2) Mouthpiece - the yellow mouthpiece is placed in the mouth such that the flange seals between the lips
and gums. The bits should be between the upper and lower teeth. Gently bite on the bits.
(3) Neck Strap - the yellow neck strap is be placed over the head for support and can be adjusted for fit.
(4) Oxygen Cylinder - the stainless steel cylinder holds 100% medical grade oxygen.
(5) Oxygen Regulator - starts the flow of oxygen and increases the oxygen flow during high work rates.
(6) Activation Cable - the stainless steel activation cable is attached to the oxygen regulator and
permanently attached to the inside of the base.
(7) Gauge - indicates the amount of oxygen in the cylinder. The green zone indicates the M-20.2 EEBD is
ready for use. The red zone indicates the cylinder is low on oxygen and should be removed from
service. The gauge is visible through the clear case and the orange secondary container.
(8) Scrubber - a chamber containing lithium hydroxide that removes carbon dioxide from the exhaled air.
(9) Breathing Bag - air reservoir that receives oxygen from the regulator and exhaled air from the user.
(10) Relief Valve - a one way valve that automatically allows excess air in the breathing bag to vent.
(11) Yellow Lever - the yellow lever is lifted upwards to open the M-20.2 EEBD.
(12) Cover - may have optional overcase pads, a user replaceable item that provides increased abrasion and
impact resistance.
(13) Base - if belt worn, the base stays on the belt after the M-20.2 EEBD has been removed from the case.
The base has an overcase pad that provides increased abrasion and impact resistance.
(14) S-Hook - the metal hook that receives the cover latch on the belt side.
(15) Face Shield - in the event the user requires head protection from smoke or chemical vapor, the face
shield may be pulled up over the head and secured around the neck by pulling outward on the draw
strings. This should be done only after inserting the mouthpiece and applying the nose clips. The Face
Shield is not part of the breathing circuit and is not required for respiratory protection.
(16) Bag Shield - a cover over the breathing bag providing additional protection to the breathing bag.
(17) Tamper Indicating Ball - the presence of a stainless steel ball bearing located in the center of the
yellow lever assures that the unit has not been opened.
(18) Band Label - user completed label indicating date of belt worn service.
(19) Information Label - contains the following information:
•MFG DATE XX/XX, the date of manufacture as month/year
•LIFE DATE XX/XX, the end of service life date as month/year
•SERIAL NO X123456, the traceable serial number of the M-20.2 EEBD
•FINAL INSP, XX, quality control final inspection
•MOUTHPIECE, X-12, the traceable lot number of the mouthpicece
•LiOH LOT, 123-X12, the traceable lot number of the LiOH
•SCRUBBER, X12345, the traceable lot number of the scrubber
•BAG LOT, XX1234, the traceable lot number of the breathing bag
•CYLINDER, XXX, the traceable lot number of the cylinder
•LEAK TEST, XX, quality control final leak test
Page 4 of 14

1
2
315
4
5
6
7
13
10
8
19
18
12
11
17
14
13
9 & 16
Page 5 of 14

2.2. How to Don the M-20.2 EEBD
The following are the donning steps for the belt worn configuration of the M-20.2 EEBD. If the
M-20.2 EEBD is wall mounted, first remove the case from the wall. These six steps must be
practiced numerous times until they become second nature.
To fit the neck strap, simply place the neck strap over the head and, if necessary, pull upward on
the o-ring to shorten the neck strap.
To fit the face shield, open the face shield by putting a hand inside the face shield and then pull
the face shield over the head and pull outward on the o-rings to tighten the face shield around the
neck.
If moisture on the inside of the face shield distorts your vision, simply press or rub the face shield
against the face with your hand.
2.3. How To Inspect the M-20.2 EEBD
The only inspections required for the M-20.2 EEBD are visual inspections. Remove the M-20.2
EEBD from the orange secondary container but do not open the clear case to inspect the M-20.2
EEBD.
(1) Read the pressure gauge.
•If belt worn, read the pressure gauge at the beginning of each work shift.
•If stored, the pressure gauge should be read at least every two years.
The tip of the white needle on the gauge is normally in the green zone. If the needle is in the
red zone or on the white zero pressure mark, remove the M-20.2 EEBD from service. If the
view of the gauge is obstructed, remove the M-20.2 EEBD from service.
If the surrounding air temperature is above 38º C (100°F), and the needle is in the red zone,
above the green zone, allow the M-20.2 EEBD to cool down to 18º - 24º C (64°- 75°F) for 24
hours. If the needle returns to the green zone, keep the M-20.2 EEBD in service. If the needle
does not return to the green zone, remove the M-20.2 EEBD from service.
Page 6 of 14

(2) Visually inspect the M-20.2 EEBD for indications of abuse.
Indications of abuse are listed below. If any of these signs are present, remove the M-
20.2 EEBD from service:
a) Case is cracked, burned, deformed or excessively worn
b) Signs of heat distortion
c) Damaged latch or cover band
d) Dirt, debris, or moisture visible through the case
e) Belt loops broken
f) Missing tamper indicating ball
If the M-20.2 EEBD fails any of the above inspections, or if at any time during its life the
pressure gauge is out of the green zone, it should be removed from service.
(3) Check the LIFE DATE on the Information Label. If the M-20.2 EEBD has exceeded
the LIFE DATE, remove the M-20.2 EEBD from service.
(4) Check the BELT WORN date on the Band Label. If the belt worn M-20.2 EEBD has
exceeded the five year belt worn period, either put it in an orange Secondary Container
and place in a stored position or, return for factory service.
2.4. How to Care for the M-20.2 EEBD
The M-20.2 EEBD is designed to be used in a marine environment. However, it is not
indestructible.
Abusing your M-20.2 EEBD is risking your life in the event of an emergency. Abusing someone
else's M-20.2 EEBD should be considered a criminal offense.
Your life may depend on the care you give your M-20.2 EEBD. Avoid the most common abuses.
(1) If the M-20.2 EEBD is accidentally opened, do not close it
(2) Do not drop the M-20.2 EEBD, particularly when removing it from the belt
(3) Do not clean the M-20.2 EEBD with any cleaning solvents, only use a soft brush
(4) Do not immerse the M-20.2 EEBD in water
(5) Do not sit on the M-20.2 EEBD
(6) Do not drag the M-20.2 EEBD on the deck
(7) Do not place the M-20.2 EEBD near a heat source greater than 60°C (140°F)
(8) Do not put tape or stickers on the M-20.2 EEBD that would impede its opening or the
reading of the gauge, Information Label or Band Label
Page 7 of 14

2.5. When to Don the M-20.2 EEBD
The M-20.2 EEBD should be donned immediately at the first indication of a fire or explosion,
even if smoke is not visible. Carbon monoxide is odorless and colorless. You could breathe a
fatal amount of carbon monoxide before smoke is present. If you suspect an oxygen deficient
atmosphere, put on the M-20.2 EEBD. Don't Wait! Some of the possible indications of an
emergency are:
(1) Sight of smoke
(2) Smell of smoke
(3) Sight of fire
(4) Fire or toxic gas alarm
(5) Sudden increase of air temperature
(6) Sound of an explosion
(7) Vibrations of an explosion
(8) Interruption of air flow
(9) Someone around you has difficulty breathing or passes out
(10) Accidental release of hazardous material
In the event of an emergency, always don your M-20.2 EEBD before attempting to escape or help
others.
2.6. Specifications
2.6.1. Duration
15 minutes, normal duration of service in maritime application
31 minutes, at rest, as determined by EN 400, Section 6.2.4
32 minutes, at rest, as determined by US 42 CFR 84 mantest number 5
10 minutes, US 42 CFR 84, Dept. of Health and Human Services, NIOSH
10 minutes, European Standard EN 400, EC mark CE0194/EN 400
2.6.2. Five Factors that Affect Duration
(1) The amount of work required to escape affects the duration. Steep inclines or
ladders, and irregular floors increase the work required to escape. Less work results
in greater duration.
(2) The physical condition or fitness of the user affects the duration. An elevated heart
rate, age and high percent of body fat decrease the fitness of the subject. The more
fit the user, the greater the duration.
(3) Regardless of the fitness of the user, the amount of oxygen required is proportional
to the user’s weight. The less the user weighs, the greater the duration.
(4) The user's respiration or breathing rate affects the duration. Excitement and fear can
increase the breathing rate. The lower the breathing rate, the greater the duration.
(5) The degree of training and familiarity can affect the duration. The more training and
experience the subject has with an EEBD, the more his breathing will be calm and
controlled. If a subject is familiar with the escape-way, it may improve the
mechanics of his escape. The greater the training and familiarity, the greater the
duration.
Page 8 of 14

2.6.3. Dimensions
8.1 x 17.3 x 15.5 cm (3.2 x 6.8 x 6.1 in)
2.6.4. Weight
0.94 kilograms, breathing apparatus only (2 lb.)
1.4 kilograms, breathing apparatus in case (3 lb.)
2.6.5. Storage Temperature
Minimum: -15 degrees C (5 degrees F)
Maximum: 60 degrees C (140 degrees F)
2.6.6. Service Life
The M-20.2 EEBD may remain in service for fifteen years from the date of manufacture,
provided the conditions of use are observed. The M-20.2 EEBD must be either stored or
belt worn, according to the conditions of use, throughout its service life.
•If the M-20.2 EEBD is belt worn, after five years it must be placed in a stored
position or returned for factory service.
•If the M-20.2 EEBD is stored it may remain in service for fifteen years without
factory service. The stored M-20.2 EEBD should be removed from service when it
exceeds the LIFE DATE.
2.6.7. Conditions of Use
(1) the visual inspections described in this manual must be performed,
(2) proper care described in this manual must be performed,
(3) when stored, the M-20.2 EEBD must be contained in an Ocenco, Incorporated
Secondary Container and then placed in a rigid bracket securely fastened to a wall or
other substantial structure and,
(4) if worn, the M-20.2 EEBD must be belt worn on the person for no more than one
shift per day.
2.6.8. Disposal and Return Instructions
The M-20.2 EEBD must be shipped in accordance with applicable regulations.
•Each M-20.2 EEBD contains 0.14 Kg (0.31 lbs.) of hazardous material.
•The hazardous material description and proper shipping name are Life-Saving
Appliance, Not Self-Inflating
•Hazard Class or Division: 9
•Identification number: UN3072
•Labels required: Class 9
Page 9 of 14

3. M-20.2T Training Model
3.1. Description of the M-20.2T Training Model
The M-20.2T Training Model is designed to look like, don like and have the breathing resistance
similar to the M-20.2 EEBD. See the next page for a diagram of the following components:
(1) Cover - The M-20.2T Cover is similar in appearance to the M-20.2 EEBD Cover.
(2) Base - The M-20.2T Base is similar in appearance to the M-20.2 EEBD Base. A “Caution
For Training Use Only” label is on the front of the M-20.2T Base.
(3) Latch Assembly - similar to the M-20.2 EEBD Latch Assembly
(4) Noseclip - similar to the M-20.2 EEBD Noseclip
(5) Mouthpiece - simulates breathing resistance of the M-20.2 EEBD with holes in the body of
the Mouthpiece. It does not allow the exhaled air to enter the Scrubber or the Breathing Bag.
Therefore, only the Mouthpiece needs to be cleaned after use.
(6) Neck Strap - similar to the M-20.2 EEBD Neck Strap.
(7) Neck Strap Ring - similar to the M-20.2 EEBD Neck Strap Ring.
(8) Cylinder - a non-functional model.
(9) Oxygen Regulator - a non-functional model.
(10) Activation Cable - attached to the Oxygen Regulator with a steel snap and permanently
attached to the inside of the Base. Pulling upwards on the Neck Strap unsnaps the Activation
Cable from the Oxygen Regulator. This gives the student the sensation of the force of
activating the flow of oxygen.
(11) Gauge - the Gauge is simulated with a label on the inside of the Case. This allows the
student to read the Gauge during training.
(12) Spring Clip - releases the Mouthpiece for cleaning.
(13) Scrubber - a non-functional model.
(14) Breathing Bag - a non-functional model.
(15) S-Hook –the metal hook that receives the cover latch on the belt side.
(16) Information Label - simulates inspection of the LIFE DATE.
Page 10 of 14