MSA AirElite 4h User manual

MSAsafety.com
Operating Manual
MSA AirElite 4h
Breathing Apparatus
Order No.: 10067731/09

MSA Europe GmbH
Schlüsselstrasse 12
8645 Rapperswil-Jona
Switzerland
© MSA 2019. All rights reserved

MSA AirElite 4h 3
GB
Contents
1 Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Correct Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Liability Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Apparatus Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Donning the Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Donning the Full Face Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.3 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Monitoring Unit and Consumption Indicator IC-Air . . . . . . . . . . . . . . 13
4.5 End of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Maintenance and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1 Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Safety Advice for handling KO2 Canisters . . . . . . . . . . . . . . . . . . . . 18
AirElite 4h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
AirElite 4h KO2-Trainer 2h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 Disassembly of the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4 Disassembly of the Breathing Bag Module . . . . . . . . . . . . . . . . . . . . 23
5.5 Cleaning, Disinfecting, Drying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.6 Assembly of the Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.7 Function Control of the Valve Control . . . . . . . . . . . . . . . . . . . . . . . . 27
5.8 Assembly of the Breathing Bag Module . . . . . . . . . . . . . . . . . . . . . . 28
5.9 Tightness Test of the Breathing Bag Module . . . . . . . . . . . . . . . . . . 29
5.10 Fitting the Sensor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.11 Assembly of the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.12 Fitting the Breathing Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.13 Installing the AirElite 4h KO2-Trainer Canisters . . . . . . . . . . . . . . . . 32
5.14 Tightness Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.15 Establishing and check Readiness . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.16 Disposal of used KO2 Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

MSA AirElite 4h
4
Safety Regulations
GB
1 Safety Regulations
1.1 Correct Use
The AirElite 4h breathing apparatus - hereinafter referred to as device - is a closed circuit apparatus
with breathing air regeneration. It permits working and rescuing for long periods of time, e.g. firefighting
or interventions by mine rescue teams with up to 4 hours operating time.
In combination with a certified facepiece (full face mask) the device protects the wearer against inha-
lation of hazardous substances and mixtures, harmful biological agents and oxygen deficiency.
The use of this breathing apparatus is permissible only for skilled and trained personnel.
It is imperative that this operating manual be read and observed when using the device. In particular,
the safety instructions, as well as the information for the use and operation of the device, must be care-
fully read and observed. Furthermore, the national regulations applicable in the user's country must be
taken into account for a safe use.
WARNING!
This device is supporting life and health. Inappropriate use, maintenance or servicing may affect the
function of the device and thereby seriously compromise the user's life.
Before use the device operability must be verified. The device must not be used if the function test is
unsuccessful, it is damaged, a competent servicing/maintenance has not been carried out, genuine
MSA spare parts have not been used.
Alternative use, or use outside this specification will be considered as non-compliance. This also
applies especially to unauthorised alterations to the device and to commissioning work that has not
been carried out by MSA or authorised persons.
1.2 Liability Information
MSA accepts no liability in cases where the device has been used inappropriately or not as intended.
The selection and use of the device are the exclusive responsibility of the individual operator.
Product liability claims, warranties and guarantees made by MSA with respect to the device are voided,
if it is not used, serviced or maintained in accordance with the instructions in this manual.

MSA AirElite 4h 5
Description
GB
2 Description
2.1 Apparatus Overview
Fig. 1 Overview
The device is housed in an impact-resistant and shockproof plastic housing. It is worn on the user's
back by shoulder harnesses and waist belt.
The device contains two chemical canisters (11), connected in parallel. These canisters contain potas-
sium hyperoxide required for regenerating the breathing air. The canisters are provided with quick
starters (12) and surrounded with a service free cooling jacket (10). The chemical canisters can only
be used once and must be replaced after use.
1 Battery 11 Chemical canister (2x)
2 Electronic distributor 12 Quick starter in the chemical canister
3 Surplus valve (on breathing bag reverse) 13 Connection starter cable
4 Charging jack 14 Ventilation pipe with cooler
5 Exhalation bag 15 Breathing hose assembly
6 IC-Air (on the right-hand shoulder harness) 16 Sensor unit
7 Inhalation bag 17 Mask connector with autostart
8 Particle filter (on left shoulder harness)
9 Air distributor 18 Valve control
10 Cooling jacket (2x) 19 Blower
15
1
9
7
23456
8
11
10
12
13
14
16
19
18
17

MSA AirElite 4h
6
Description
GB
Above the air distributor (9) is the breathing bag unit with an inhalation bag (7), an exhalation bag (5)
and the surplus valve (3). A class P2 particle filter (8) to EN 143 is fitted on the air inlet side of the inha-
lation bag.
The valve control (18) connects the breathing hose assembly (15) to the inhalation bag and exhalation
bag. The blower (19) and the sensor assembly (16) are attached to the valve control.
On the intake side, the blower is connected to the exhalation bag and on the outlet side with the air
distributor. The sensor assembly provides data for calculating the residual capacity.
The automatic choke, the blower, the quick starter, the sensor assembly, as well as the monitoring unit
and control monitor IC-Air (6), are supplied with energy by the battery (1). The battery can be recharged
via the charging jack (4) using the battery charger for AirElite 4h batteries (order no. 10068542). Alter-
natively, the use of non-rechargeable batteries is possible.
The breathing hose assembly is protected from damage by a flash-over protection. It is connected to
the valve control of the device. The breathing hose assembly is attached to and lead sealed in a socket
on the left-hand shoulder harness. When removing the breathing hose assembly from the socket an
electrical contact triggers an autostart which puts the device into operation.
Above the breathing bag unit is the electronic distributor (2) with connections for the IC-Air, the auto-
start, the blower, the sensor assembly and the battery. The connections to the distributor are identified
by symbols and colored markers.
Fig. 2 Symbols at the distributor
The device can, alternatively, be used with chemical canisters for operating times of up to 4 hours (at
a breathing minute volume of 30 l/min) or with chemical canisters for operating times of up to 2 hours
(at a breathing minute volume of 40 l/min). For training with the AirElite 4h are either ambient air depen-
dent training canister (with non-interchangeable housing cover) or KO2 training canister for ambient
air independent exercises up to 2 hours (at a breathing minute volume of 40 l/min), also with a special
non-interchangeable housing cover, available.
The electronic control of the IC-Air identifies the type of canister being used automatically, displays it
and calculates the percentage residual capacity accordingly.
The full face masks 3 SR AirElite, Advantage AirElite or Facepiece G1 AirElite are available as options
(see the operating manuals for the full face masks).
CAUTION!
The AirElite 4h is a device for gaseous atmospheres. It must not be used for diving.

MSA AirElite 4h 7
Description
GB
WARNING!
With the two training equipment versions only creating and ventilation of AirElite 4h must be practiced.
The training devices are not respirators and may only be used for instruction and training.
2.2 Function
The device is a closed circuit breathing air regeneration apparatus based on chemical oxygen. The
regeneration of breathing air is carried out with potassium hyperoxide.
In use, the exhaled air is transferred to the chemical canisters with the potassium hyperoxide. The
potassium hyperoxide reacts with the humidity and the carbon dioxide of the exhaled air and, at the
same time, develops oxygen and heat. The amount of the resulting oxygen is dependent on the inten-
sity of respiration. Increased respiration (more carbon dioxide, more humidity) increases the formation
of oxygen or vice versa.
The breathing air temperature is reduced by coolers located before the inhalation bag.
The residual capacity is monitored and displayed in percent by the electronic monitoring unit and
consumption indicator (IC-Air). In addition to the indication, acoustic and visual warnings are produced
when reaching a residual capacity of 50%, 20% and 5%.
The IC-Air is equipped with a motion detector. In the event of motionlessness of the device user, it auto-
matically sounds an alarm. If required, the alarm can also be activated manually.
The device and the IC-Air start automatically as soon as the mask connection of the hose assembly is
disconnected from the socket with autostart on the shoulder harness.
CAUTION!
Never remove the breathing hose assembly for trial from the socket of the shoulder harness.
When removing the breathing hose assembly from the socket on the left-hand shoulder harness the
device starts.
Also the chemical canisters are started and must be replaced before another use.
CAUTION!
Observe temperature limitations in use. The minimum temperature for starting must not be less
than -6 °C
At any given time, more oxygen is developed than consumed. The breathing air
provided is dry.

MSA AirElite 4h
8
Technical Data
GB
3 Technical Data
1) BMV - Breathing minute volume according to DIN 58652-2
2) Mask not taken into consideration
AirElite 4h was tested in accordance with DIN 58652-2 by DEKRA EXAM, Dinnendahlstr. 9, 44809
Bochum (reg. No. 0158) and meets the requirements of Directive 89/686 EEC or Regulation (EU)
2016/425, respectively. This is a device for the generation of chemical oxygen (KO2) designed for work
and rescue operations – a class K 240 S device.
The Declaration of Conformity can be found under the following link: https://MSAsafety.com/DoC
Dimensions H x W x D
(housing) : approx. 600 mm x 360 mm x 190 mm
Weight ready for use : approx. 15 kg (less mask)
Maximum service life 1) :
Depending on consumption
With breathing canisters for 4 hours' operation:
• 4 hours at BMV 30 l/min
• 6 hours maximum operational duration at reduced
BMV < 20l/min
With breathing canisters for 2 hours' operation:
• 2 hours at BMV 40 l/min
• 3 hours maximum operational duration at reduced
BMV < 20l/min
Standby storage and starting
temperature :-6 °C to +60°C when using rechargeable batteries
-6 °C to +54 °C when using non-rechargeable batteries
Operational temperature
(after starting) :-15 °C to +60 °C when using rechargeable batteries
-15 °C to +54 °C when using non-rechargeable batteries
Breathing resistance with
breathing canisters with a 4 hour
operating time at BMV 30 l/min 2)
:Inhalation:
Exhalation:
-3 mbar
+5 mbar
Breathing resistance with
breathing canisters with a 2 hour
operating time at BMV 40 l/min 2)
:Inhalation:
Exhalation:
-4 mbar
+6 mbar
Inhalation Air Temperature +30 °C to +45 °C
Humidity 20 % to 40 %
Carbon dioxide <1.0vol.%
(mask not considered)
Oxygen > 80 vol. %
Maximum surface temperature :Temperature class T4
(with a 4 hour operation time according to EN 50014).
Electronic control :
EX ia IIC T4 Ga, Ex ia I Ma / ATEX 2014/34/EU, Group 1
dust and water protection tested acc. to IP 67
EMC according to EN 61000-6-2 and EN 61000-6-3
Housing :Plastic, self-extinguishing, impact-resistant, anti-statically
treated
Facepiece :3 SR AirElite, Advantage AirElite or
Facepiece G1 AirElite full face masks

MSA AirElite 4h 9
Operation
GB
4Operation
NOTICE
The device is delivered without chemical canisters. For storage in readiness, the device must be
prepared for use by trained personnel.
On delivery ex factory the battery is not connected to the electronic distributor. For charging connect
battery first.
The device stored in readiness can immediately be used. In standby mode, the harness should always
be extended to full length.
4.1 Donning the Device
(1) Don AirElite as a backpack.
(2) Tighten shoulder harnesses as required.
(3) Don waist belt.
(4) Tighten waist belt strongly.
(5) Loosen shoulder harness slightly, the device weight rests
on the hip.
(6) Close breathing hose support.
(7) Tighten hose support as required.

MSA AirElite 4h
10
Operation
GB
NOTICE
If the red LED flashes, the Err display with the error code is shown alternately or an audible warning
sounds, the system is not ready for use. After approx. 15 seconds the IC-Air switches off by itself.
Connect hose assembly to the socket again. Carry out troubleshooting and re-establish readiness.
(8) Press test button on IC-Air for approx. 1 second
(chapter 4.4).
a) LED lights red and changes to green.
b) LCD symbols and software version appear on the
display.
c) Brief acoustic signal sounds.
d) Background light in the display illuminates.
e) Indication of canisters fitted (2 h, 4 h, 2 htr or 4 htr) and
indication "go".The device is ready for use.
f) Thereafter the IC-Air switches off.
The device is ready, however has not yet started. If not used, the lead sealed device can
be returned to storage in readiness.
During test, do not start the device. However, if you have disconnected the breathing
hose assembly from the socket on the shoulder harness, the display "go" remains
stable, as the device remains in test mode, the canisters are not started. In this case,
reconnect the hose assembly to the socket again. To start, remove the mask connection
from the socket again.

MSA AirElite 4h 11
Operation
GB
4.2 Donning the Full Face Mask
NOTICE
The full face mask must be tightened carefully to safely avoid loss of breathing air.
(1) Don 3 SR AirElite, Advantage AirElite or
Facepiece G1 AirElite full face mask (see operating
manual for the full face mask).
(2) Check the fit of the full face mask during inhalation and
exhalation using the palm test (see operating manual for
the full face mask).

MSA AirElite 4h
12
Operation
GB
4.3 Starting
(1) Remove breathing hose assembly by gently turning hand-
wheel and pulling it entirely out of the socket on the left
shoulder harness.
a) Lead seal breaks.
b) Device starts automatically a function test and is ready
for use after approx. 15 seconds (IC-Air indicates
"100").
c) Insert the facepiece of the breathing hose assembly in
the respirator full face mask.
NOTE: During the function test, DO NOT connect breathing hose
assembly into the full face mask.
The device is ready for use.

MSA AirElite 4h 13
Operation
GB
4.4 Monitoring Unit and Consumption Indicator IC-Air
The IC-Air is used for the control and monitoring of the proper functioning of the device, the indication
of operational data as well as indicating and signaling hazardous conditions. It also warns when
detecting motionlessness of the device user and offers the possibility of activating the alarm manually.
Fig. 3 IC-Air and display symbols
After starting the AirElite 4h device, the IC-Air displays the residual in %.
During training with the training canisters, the IC-Air displays alternately the residual capacity in % and
"2 htr" or "4 htr".
Symbol “spanner”
• Calibration mode or error
Symbol “running man”
• Evacuation required
Symbol “cylinder”
• Residual capacity in 8 stages
Symbol “Battery”
• Battery charging status
bAtt Battery insufficiently charged
2h canister
4h canister
KO2-Trainer 2h
Trainer HD
Symbol “Number display” *)
• Residual capacity or error code
*) Both symbols are indicated alternately, if
training canister is used
1 Test button (green), display light 3 LED button (red/green), manual alarm call
2 Display 4 Reset button (yellow)

MSA AirElite 4h
14
Operation
GB
Monitoring and Display Functions
• Identification of the canisters fitted (2h, 4h, training canister).
• Control of the battery charge level; warning when the battery is low.
• Digital capacity display in % (from 100 to 0 downwards).
• Residual capacity in 8 stages (“Cylinder” symbol).
• At 50 % residual capacity, a brief acoustic warning signal sounds.
• As from 20 % residual capacity, the LED flashes red/green alternately, an interval signal sounds
and the retreat symbol (“Running Man”) appears on the display.
• As from 5 % residual capacity, the LED flashes red, the retreat symbol flashes and a warning
sound (rapid beep) is emitted.
• At 0 % residual capacity, the warning function continues (LED is flashing red, the retreat symbol
flashes and warning sound). The mission must be finished by then. The device continues to
operate utilising the residual capacity.
Function Control after Assembly and before Use
(1) Press the test button on IC-Air until the LED lights up green and the symbols on the display
appear (Fig. 3, Pos. 1).
Error Display in Test Mode
Check the function of the device after assembly and before use. To do so, press the test button until
the IC-Air confirms readiness.
In case of a malfunction the following error codes are shown:
This warning sound can be turned off repeatedly for approx. 90 seconds by pressing the
Reset button twice.
bAtt Battery defective or insufficiently charged.
1 - Autostart not connected to the distributor.
2 - Starter or canister not connected or canister already used.
4 - Blower motor defective, blocked or disconnected.
8 - Temperature sensor in the sensor assembly faulty.
20 - Pressure sensor in the sensor assembly faulty or calibration not successful.
28 - Complete sensor assembly faulty or not connected to the distributor
(pressure sensor = 20 + temperature sensor = 8).
Several simultaneous errors are shown as a total, (e.g. Starter and blower = 6), except
for the error bAtt. This is shown as a main error, always on its own.
In addition to the error code, there is also a visual (red LED) and acoustic (Beep) alarm
indication.
The error codes 50, 70, 75, 80 and 90 indicate a defect in the IC-Air. Return the IC-Air
to the MSA Customer Service for repair.

MSA AirElite 4h 15
Operation
GB
Manual Alarm Call
(1) Push LED button until the alarm sounds.
Switching off the Motion Alarm
(1) If automatically released and in the pre-alarm stage (3 stages),
move the IC-Air.
(2) If automatically released and in full alarm, press the reset button twice.
(3) If manually activated, press the reset button twice.
Illuminating the Display
(1) Press Test button.
The display is illuminated for about 6 seconds.
4.5 End of Use
(1) After use, disconnect the breathing hose assembly from the full face mask.
CAUTION!
After an interruption of use, subsequent use of the device (without reconditioning) is possible within the
time frame of the capacity indication. During the interruption, the breathing hose connection must not
be plugged into the socket on the left shoulder harness, as then the device is switched off irreversibly
and cannot be reused.
If the usage of the training device is interrupted, the capacity reduces by 1 %/min (2h canisters) or
0.7 %/min (4h canisters).
(2) Plug the breathing hose assembly into the socket on the left shoulder harness.
The device switches off.
An acoustic double signal sounds.
(3) Open hose support, open the waist belt by pressing on the buckle (from the inside), loose
harness and remove the device.
(4) Return the used device for reconditioning.
The manual alarm call only functions if the device is in operation.

MSA AirElite 4h
16
Maintenance and Service
GB
5 Maintenance and Service
This device must be regularly checked and serviced by qualified specialists only. Inspection and
service records must be maintained. Always use original parts from MSA.
Repairs and maintenance must be carried out only by authorised service centres or by MSA. Modifi-
cations of the device or its components are not permissible and result in loss of approval.
MSA is liable only for maintenance and repairs carried out by MSA.
CAUTION!
For cleaning do not use organic solvents like alcohol, white spirit, petrol, etc. Use exclusively the disin-
fectant tested and approved by MSA.
When drying/washing, do not exceed the maximum permissible temperature of 60°C.
5.1 Inspection and Maintenance
MSA recommends the following maintenance intervals. If needed and by considering the usage, the
activities may be required at shorter intervals than indicated. Observe national laws and regulations! If
in doubt, ask the MSA representative.
See chapter 6 for a list of accessories. For questions regarding the device, or any further
information, please contact the MSA representative.

MSA AirElite 4h 17
Maintenance and Service
GB
Every 8 years
replacement of
canisters,when
canisters are in
original pack-
ages and
stored on stock
Every 5 years
replacement of
rechargeable
batteries
replacement of
canisters, when
assembled in
AirElite 4h device
and device is
stored in case
(10071650)
replacement of
valve discs
Every 2 years
replacement of
canisters, when
assembled in
AirElite 4h
device and
device is stored
on stock
replacement of
canisters, when
canisters are in
original pack-
ages and stored
on stock
Every 1 year
tightness check
of the device
when canisters
assembled
replacement of
non-recharge-
able batteries2)
Every 6
months
AirElite 4h
device, stored
on stock
AirElite 4h
device
replacement of
non-recharge-
able batteries1)
Every 3
months
recharge battery
replacement of
canisters, when
assembled in
AirElite 4h
device and
device is stored
on stock
After use
AirElite 4h device
after recondi-
tioning
as described in
the service
manual
tightness check of
the device after
reconditioning
recharge battery
replacement of
non-rechargeable
batteries
replacement of
canisters
replacement of
canisters
replacement of
valve discs when
damaged
Before use
AirElite 4h
device
AirElite 4h
device
Daily
AirElite 4h
device,
stored on
trucks
Visible inspection Function Test Cleaning and Disinfection Tightness check Battery rechargeable Battery non- rechargeable AirElite 4h canisters AirElite KO2- Trainer canis- ters Valve discs

MSA AirElite 4h
18
Maintenance and Service
GB
When using the battery holder AirElite the following must be observed:
1) For battery type DURACELL PLUS POWER MN1500 cells must be replaced after a service life of
6 months.
2) For battery type DURACELL INDUSTRIAL LR6 cells must be replaced after a service life of
12 months.
5.2 Safety Advice for handling KO2 Canisters
When installing KO2 canisters (AirElite 4h canisters and KO2 training canisters), the following safety
regulations must be observed (see MSA safety data sheet on chemical oxygen devices and corre-
sponding spare canisters):
CAUTION!
Wear appropriate eye protection and protective gloves (no cloth gloves).
NOTE: When handling KO2 canisters, KO2 grains or dust can escape from the canisters. Carefully
dispose of released KO2 according to the safety instructions below.
AirElite 4h
(1) Remove the sealed chemical canisters from the packaging.
(2) Cut open the foil bag and remove the canisters.
(3) Slowly and carefully unbutton the black cap while pointing the side of the canister with the cap
away from the body.
NOTE: If a pressure builds up in the canister during storage, removing the cap can lead to a pressure
release causing KO2 dust to escape from the canister.
CAUTION!
Do not inhale dust! Do not allow dust to come in contact with the eyes!
Absorb dust dry or with high amounts of water. When exposed to water, KO2 produces oxygen and
potash (danger of chemical burn).
When in contact with skin, thoroughly wash affected areas with water!
(4) After removing the cap, unbutton the white sealing plug.
(5) Fit the canister into the device.
AirElite 4h KO2-Trainer 2h
(1) Remove the sealed chemical canisters from the packaging.
(2) Cut open the foil bag and remove the canisters.
(3) Slowly and carefully pull out the large yellow plug while pointing the side of the canister with the
plug away from the body.
NOTE: If a pressure builds up in the canister during storage, removing the cap can lead to a pressure
release causing KO2 dust to escape from the canister.
CAUTION!
Do not inhale dust! Do not allow dust to come in contact with the eyes!
Absorb dust dry or with high amounts of water. When exposed to water, KO2 produces oxygen and
potash (danger of chemical burn).
When in contact with skin, thoroughly wash affected areas with water!
(4) After removing the large yellow plug, pull out the small yellow plug.
(5) Fit the canister into the training device.

MSA AirElite 4h 19
Maintenance and Service
GB
5.3 Disassembly of the Device
(1) Unscrew housing with 4mm allen key and remove.
Lead seal breaks.
(2) Unscrew battery cable plug on the distributor and pull plug
out.
Symbol on the distributor:
(3) Open the hook-and-loop-tape of the battery pack on the
top side.
(4) Remove battery.
(5) Recharge battery with charger and adapter cable until the
charge level indicator glows green.
NOTE: If adapter cable is not available, charge battery in
installed condition via the charging jack of the device (battery
cable plug must then be connected to distributor). In this case,
disconnect autostart plug from electronic distributor for the
following described activities to avoid activation of the device.
(6) Remove the breathing hose assembly from the socket on
the left shoulder harness (autostart).
NOTE: Gently turn and pull the hand wheel.
(7) Unscrew breathing hose assembly from the device
(bottom side first).

MSA AirElite 4h
20
Maintenance and Service
GB
CAUTION!
Chemical canisters become hot when used. Let canisters cool down before removal or use protective
gloves.
(8) Open the zip of the flash-over protection.
(9) Open both push-button loops.
(10) Remove the flash-over protection from the hoses.
(11) Pull out starter cable plugs of both chemical canisters.
(12) Loosen chemical canister belts.
(13) Unbutton both canisters at the top and bottom from the
rubber collar and pull them out upwards.
(14) Close the canisters at the bottom with plugs and at the top
with caps, discard canisters.
(15) Dispose used chemical canisters in accordance with local
regulations (chapter 5.16).