Scott Safety ModulAir 2 User manual

1035027 M
02.2020
AS/NZS 1716:2012
SMK1214
SAI GLOBAL
MODULAIR 2

MODULAIR 2 Iss M3
PRE-OPERATIONAL WARNINGS
Important: Please Read Carefully and Fully Understand
Keep Instructions For Future Reference
This manual is for use by personnel trained in the use and care of compressed air
breathing apparatus, and MUST NOT be used as a self-teaching guide by untrained
users. Failure to understand or adhere to the ModulAir 2 User Instructions may result
in injury or death.
Scott Safety have taken great care to ensure that the information in this manual is
accurate, complete and clear. However, Training and Technical Support Services will
be pleased to clarify any points in the manual and answer questions on Scott Safety
breathing apparatus.
The following warnings are in accordance with certifying authority requirements and
apply to the use of breathing apparatus in general:
Ensure that the selection of the equipment to be used is sufficient for the tasks
being undertaken and the hazards likely to be encountered. For guidance on the
selection of apparatus to be used with the ModulAir 2 system, please contact
Training & Technical Support Services at Scott Safety or refer to EN 529 : 2005
and the Health and Safety Executive Publication HS(G)53 Respiratory Protective
Equipment, A Practical Guide for Users.
In Australia and New Zealand, ensure that your selection of respiratory protective
devices conform to the requirements of AS/NZS1715 : 2009.
Anti-static supply hoses MUST be used in potentially flammable or explosive
atmospheres.
The storage temperature should be between -30°C and +60°C.
The equipment is designed for use in a temperature range of -6°C to +60°C.
However, if used with an AFU the operating temperature must be that of the AFU,
between +1.5°C and +30°C.
When the equipment is in use, a competent person MUST remain with the supply
system at all times to act as base controller and monitor the air supply. Under no
circumstances must the equipment be left unmanned when wearers are being
supplied from the unit.
To ensure optimum equipment performance, carry out the tests and service
procedures detailed in this Manual under Servicing and Scheduled Maintenance.
Apparatus that fails a routine check must be withdrawn from service, an
explanatory note attached and the unit returned for repair.
DISCLAIMER
Failure to comply with these instructions or misuse of the apparatus may result in:
death, injury or material damage, and invalidate any warranty or insurance claims.
COPYRIGHT
This manual must not be copied in part or whole, or used for purposes other than its
intended purpose without the written permission of Scott Safety.
GB-AU

4MODULAIR 2 Iss M
INTRODUCTION
These products meet the requirements of
European Regulation (EU) 2016/425 and
applicable local legislation. The applicable
European/local legislation and Notified
Body can be determined by reviewing
the Certificate(s) and Declaration(s) of
Conformity at www.3m.com/Respiratory/
certs.
CE: European conformity – These products
are type approved and annually audited
by either BSI Group, The Netherlands B.V.
Say Building, John M. Keynesplein 9, 1066
EP Amsterdam, The Netherlands, Notified
Body No. 2797 and / or BSI Assurance
UK Ltd, Kitemark Court, Davy Avenue,
Knowlhill, Milton Keynes MK5 8PP, UK,
Notified Body No. 0086.
ABBREVIATIONS
The following abbreviations are used in
this manual:
AFU Air Filter Unit
DS4 Low Pressure Alarm
DV Demand Valve
m Metres
mg Milligrams
min Minute
mm Millimetres
NRV Non Return Valve
PRV Pressure Relief Valve
psi Pounds per Square Inch
BREATHABLE AIR
Breathable Air may be natural or
synthetic. Table 1 shows the composition
of natural air.
Component Mass % (Dry
Air)
Volume%
(Dry Air)
Oxygen 23.14 20.95
Nitrogen 75.52 78.08
Argon 1.288 0.934
Carbon Dioxide 0.048 0.031
Hydrogen 0.000003 0.00005
Helium 0.000073 0.00052
Neon 0.0012 0.00018
Krypton 0.00033 0.00011
Xenon 0,000 04 0,000 009
Table 1: Breathable Air - EN 12021 (NOT
applicable for Australia or New Zealand)
Fire risk increases when the oxygen
content is above the value shown in Table
1.
The quality of air used to supply and
charge breathing apparatus must conform
to EN 12021 : 2014 or AS/NZS1715 : 2009.
Contaminants must be kept to a minimum,
and must not exceed permissible
exposure levels.
Where air-purifying devices are used,
these must be sufficient for the types of
contaminant present in the air supply.
Air supplied from a fixed or portable
external source must be tested
periodically to ensure conformance with
these regulations.
Air supplied to breathing apparatus must
be free from the odour of oil. The odour
threshold is in the region of 0.3 mg/m3.
The water content of air used to charge
high-pressure compressed-air cylinders
must not exceed 30 mg/m3 for 300 bar
or 50 mg/m3 for 200 bar apparatus.
Air for compressed-air breathing
apparatus must have a dew-point
sufficiently low to prevent internal
freezing when apparatus is used below
4°C.
National regulations for compressed
airline breathing apparatus must be
observed.
AIRLINE AIR SUPPLY
Air for use with compressed-air airlines
must conform to EN 12021:2014 or AS/
NZS1715 : 2009 and must have a dewpoint
sufficiently low to prevent internal
freezing when the apparatus is used in
temperatures below 4oC.
ModulAir 2 is approved for use with a
maximum hose length of 105 metres.

MODULAIR 2 Iss M5
APPARATUS DURATION
Durations quoted for compressed-air
cylinders are nominal and based on an
average consumption rate of 40 litres
per minute to positive-pressure breathing
apparatus. Table 3 lists the cylinders
approved for use with ModulAir 2.
Consumption rates are increased by the
following factors:
Workload.
Temperature: extreme heat or cold.
Physical fitness: personnel, with less
efficient cardiovascular systems,
consume more air for a given work rate.
Stress and fatigue.
Physiological stress.
Heavy/restrictive clothing.
It is important that users are aware of
these factors when considering the
duration of air supply from cylinders, and
ensure that adequate precautions are
taken.
TRAINING
Personnel using this apparatus must be
fully-trained in accordance with these
instructions and national regulations.
These instructions cannot replace an
accredited training course run by fully
qualified instructors in the proper and safe
use of Scott Safety breathing apparatus.
Please contact Training and Technical
Support Services or your distributor for
training course details.
Training and Technical Support Services:
Scott Safety
Pimbo Road, West Pimbo,
Skelmersdale, Lancashire,
WN8 9RA, England.
Tel: [phone]
Fax: [phone]
SERVICING
ModulAir 2 must be serviced at scheduled
intervals by personnel who have
completed a formal training course and
hold a current certificate for the servicing
and repair of Scott Safety breathing
apparatus. Details of the servicing
schedule are contained in the ModulAir 2
Service Manual, copies of which can only
be obtained by registered holders of a
current certificate.
Training and Technical Support Services
at Scott Safety provide a complete
mobile test and maintenance service for
all Scott Safety equipment.
Further details of training courses and
servicing contracts can be obtained from
Training and Technical Support Services.
SPARE PARTS AND
ACCESSORIES
Customer Services provide an efficient,
friendly, customer contact point for
ordering new apparatus, spare parts and
accessories. The team can also provide
general information on Scott Safety
products.
TECHNICAL DESCRIPTION
GENERAL
ModulAir 2, Two-cylinder Trolley
The ModulAir 2 apparatus is a portable
airline system which can supply medium-
pressure breathable quality air to up-
to four airline breathing apparatus with
demand valves.
ModulAir 2 units are approved for use
with a total hose length of up-to 105
metres. Apparatus with two reducers
is approved for use with two total hose

6MODULAIR 2 Iss M
lengths of 105 metres, where each length
is supplied from a reducer.
ModulAir 2 units are approved for use
with all Scott Safety compressed-air
airline breathing apparatus fitted with
demand valves.
The following configurations of ModulAir
2are available:
Static frame fitted with pneumatics and
space for two compressed-air cylinders.
Static frame fitted with pneumatics and
space for four compressed-air cylinders.
Trolley-based system with 2 or 4
cylinder frame, pneumatics and a hose
reel capable of holding 60 metres of
hose.
Trolley system with cylinders,
pneumatics and a hose reel, that can
be supplied from an external medium-
pressure breathable air supply.
Options for use with trolley-based
versions include:
A medium-pressure warning whistle;
An Air Filter Unit (AFU);
An electronic low-pressure warning
alarm (DS4).
The ModulAir 2 tubular stainless steel
frame can house either two or four
compressed-air cylinders (version
dependent) with a diameter of between
140 mm (5.5“) and 180 mm (7”). Cylinders
are secured by steel cylinder bands and
butterfly catches.
ModulAir 2 is CE marked to EN 14593-
1:2005 (Respiratory Protective Devices -
Compressed Airline Breathing Apparatus)
and is quality-assurance approved to: ISO
9001 : 2015.
ModulAir 2 is approved to Australian/
New Zealand Standard AS/NZS1716 :
2012.
ModulAir 2 is marked in accordance
with EN 14593-1:2005 and AS/NZS1716 :
2012. An explanation of those markings is
shown opposite:
Key Meaning
A= Product brand name
B= Symbol - refer to User Instructions
C= Operational warnings
D= Contact details of manufacturer
E= Product model/designation
F= Apparatus description
G= Standards to which apparatus is certified
H= Serial number of apparatus
I= Date of manufacture
J = Number of Approval Body
PNEUMATICS
The pneumatics system comprises
cylinder connectors and reducer.
Air flows from the cylinders, through the
cylinder connectors to the reducer where
it is reduced to between 5.5 and 11 bar.
Each cylinder connector has a non-return
valve that prevents air from a charged
cylinder flowing into a discharged cylinder
and allows discharged cylinders to be
replaced while the system is pressurised.
A bleed screw in the connector elbow
enables the cylinder connector to be
depressurised prior to disconnection.
A sintered filter in the cylinder connector
protects the pneumatic system from
contamination.

MODULAIR 2 Iss M7
Pneumatics for a single reducer system
Pneumatics for a dual reducer system
Systems designed to supply 4 wearers
are provided with 2 pressure-reducers to
ensure sufficient flow-rate. The reducers
are connected to a common high-
pressure manifold.
The high-pressure manifold has ports that
can accommodate:
Outlets for up-to two pressure reducers;
Inlets for up-to four cylinder connectors;
An outlet for a high-pressure warning
whistle;
An outlet for a high-pressure gauge.
Systems that do not use all ports have
blanking plugs fitted to unused ports.
Medium-pressure air is output by the
reducer, either directly to wearer supply
airlines, or, on hose reel versions, to a
manifold on the hose reel hub.
The high-pressure warning whistle sounds
when pressure in the on-line cylinder falls
below 55 bar.
PRESSURE REDUCER
The pressure reducer is a single stage
spring and piston device with an internal
pressure relief valve that protects the
medium-pressure system from over-
pressurisation.
There are ports in the reducer which
accommodate:
An outlet to the medium-pressure
gauge;
A medium-pressure outlet to the
wearers;
The medium-pressure inlet from an
external supply or an AFU (optional);
An outlet to the medium-pressure
warning whistle (optional).
Air from the cylinder flows through
the high-pressure manifold, enters the
reducer through a jet and flows through
the hollow piston stem to a chamber
above the piston. As pressure in the
chamber rises, the piston is forced down
against the spring until the nylon seat at
the lower end of the piston stem closes
the jet.
When medium-pressure air flows from
the reducer to the wearers, the pressure
in the chamber falls enabling the spring
to lift the piston seat from the jet. This
cycle continues while there is sufficient
air in the cylinder.
The medium-pressure gauge has a
restrictor that limits air-loss to 25 litres
per minute in the event of the gauge
becoming damaged.
HOSE REEL
The hose reel is fitted with 60 metres of
9.5 mm (3/8”) bore airline supply hose. The
hose conforms to EN 14593-1:2005 and
AS/NZS1716 : 2012; and has a maximum
working pressure of 15 bar (220psi). Hoses
are fitted with CEJN safety couplings.
The hose reel manifold can accommodate
up-to two medium-pressure hoses, each
from a pressure reducer; and a medium-
pressure warning whistle.
A rotatable CEJN coupling in the hub
allows the hose reel to turn without loss
of air.
The CEJN parking connector at the top
of the hose reel frame is designed to vent
any pressure from the medium-pressure
circuit.

8MODULAIR 2 Iss M
Anti-static hoses (which are resistant
to heat and chemicals) must be used
in environments where there is danger
from potentially explosive or flammable
atmospheres.
MEDIUM-PRESSURE ALARM
OPTIONS
Whistle
The medium-pressure whistle sounds
when the medium-pressure circuit falls
below between 4.1 bar (60psi) and 3.8
bar (55psi).
DS4 Alarm
The DS4 alarm is a battery-operated
electronic warning device which is ATEX-
approved as intrinsically safe for use in
flammable or explosive atmospheres.
DS4 Alarm
The DS4 is powered by a PP3 9-volt
alkaline battery, which must be renewed
periodically. A yellow light will illuminate
to advise the operator when the battery
level is low.
The DS4 unit is switched on and off by a
key-operated switch which is located on
the side of the unit, close to the warning
lights.
When the DS4 is initially switched on, a
red warning light will illuminate and the
audible alarm will sound until pressure in
the system reaches the safe level. Once
the safe pressure level is reached, the
audible alarm will cancel automatically,
the red light will extinguish and a green
light will illuminate.
During use, if the medium-pressure circuit
falls to below 4.5 bar (65psi), the operator
is alerted by the illumination of the red
warning light and the sounding of the
audible alarm. Under ‘normal’ conditions,
(while the pressure is at a safe level), a
green light is illuminated.
EXTERNAL AIR SUPPLY
WARNING: On ModulAir 2 versions
designed to operate with an external
supply airline, the airline may be
connected directly to a pressure-reducer
or to an airline filter unit provided.
External air supplies must conform to
EN 12021 : 2014 or AS/NZS1715 : 2009.
Pressure must be between 6.0 and 9.0 bar
(84 and 126psi) and capable of providing
the flow-rates listed in Table 2.
AIRLINE FILTER UNIT
Airline Filter Unit (AFU)
1External Air Supply Inlet
2Pop-up Indicator
3Outlet Hoses
4Warning Whistle
WARNING: The AFU WILL NOT remove
carbon monoxide (CO), carbon dioxide
(CO2), or other toxic gases or vapours.
The AFU MUST be operated in the vertical
position.
The operating temperature must be
between +1.5°C and +30°C.
For further details, please refer to AFU
User Instruction Manual.
The AFU has three filter elements.

MODULAIR 2 Iss M9
Two coalescing filter elements remove oil,
water, and particles down to 0.01 x 10-6
metres, giving a residual oil content of
less than 0.01 mg/m3 dirt.
The third element is an activated carbon
absorption filter that removes oil vapour
and odours.
Before use, the external air supply MUST
be checked for purity and composition
(see Breathable Air in the Introduction
section of this Manual). Where toxic
gases or vapours are present, an air
purifier must be used. Further details
are available from Customer Services at
Scott Safety.
Auto-drain valves fitted to each element,
drain water and oil filtered from the air.
The third element (an absorption bed of
activated carbon) removes oil vapour and
odours.
Elements must be renewed when
congested. A red pop-up indicator on
AFU is activated when the pressure
drop in the AFU, caused by congestion,
becomes excessive.
HOSE CONFIGURATIONS
Although the hose reel holds only 60
metres of hose, the maximum hose length
for which ModulAir 2 is approved is 105
metres. The total length is achieved by
connecting several hoses of different
lengths. The following diagrams show
configurations that have been tested and
approved by Scott Safety.
Configurations that result in a total length
of less than 105 metres are permissible.
If the maximum hose length configurations
in the following diagrams do not meet
your requirements, please contact
Training and Technical Support Services
at Scott Safety for advice on alternative
configurations.

10MODULAIR 2 Iss M
Maximum hose length configuration for a 2-man ModulAir 2
Maximum hose length configuration for a 4-man ModulAir 2
Key:
HPM = High-pressure Manifold
R = Reducer
BA = Breathing Apparatus

MODULAIR 2 Iss M11
CYLINDERS
Table 3 shows the cylinder types approved for use with ModulAir 2. All durations
quoted are nominal and based on an average consumption rate of 40 litres per
minute. (Composite cylinders may vary in diameter which may affect the cylinder
band positions, as would the fitting of cylinder covers. The positions given are for
guidance only). Table 4 contains details of the cylinder specifications.
Cylinder Water
volume
(litres)
Charging
pressure
(bar)
Free air
capacity
(litres)
Charged
weight
(kg)
Total duration
(min)
Warning period
(min)
Nominal
duration
(min)
Cylinder
Band
position
CYL-1200 6,0 200 1200 8,8 30 8 22 3
CYL-FWC-1300 4,7 300 1300 5,0 32 7 25 4
CYL-1640 6,0 300 1640 5,0 32 7 33 4
CYL-FWC-1640 6,0 300 1640 5,8 41 8 33 7
CYL-1800 9,0 200 1800 13,0 45 12 33 14
CYL-FWC-1800 9,0 200 1800 6,75 45 12 33 14
CYL-FWC-1860 6,8 300 1860 6,75 46 9 37 7
CYL-FWC-2460 9,0 300 2460 8,8 62 12 50 14
Table 3: Cylinders approved for use with ModulAir 2
Code Material Specification
No Code Steel (i.e. CYL-1200) CE Marked (EU)
Work Cover (Australia & New Zealand)
FWC Composite cylinder (i.e. CYL-FWC-1300) CE Marked (EU)
Work Cover (Australia & New Zealand)
Table 4: Cylinder Codes and Specifications
The following formula apply:
Total Duration = Cylinder Free Air Capacity
Average Wearer Consumption Rate
Nominal Duration = Total Duration minus the Warning Period
Warning Period = Whistle Operating Pressure x Cylinder Water Capacity
Average Wearer Consumption Rate
High-pressure whistle operating pressure = 55 bar
Please read Section Apparatus Duration at the front of this manual.

12MODULAIR 2 Iss M
PREPARATION FOR USE
WARNING: Keep the AFU upright during
operation. Tilting the AFU may result in
filtered-out material re-entering the air
supply.
DO NOT use apparatus that fails any of
the following tests. Withdraw the unit
from service, attach an explanatory note
and return for servicing.
INITIAL CHECKS - (AIRLINE
SYSTEM)
1. Check that the apparatus is clean and
free from damage.
2. Check that the apparatus is complete,
that the cylinders are fully-charged
and that the cylinder valves and bleed
screws are closed (fully clockwise).
3. Check that the AFU sight-glasses are
clean and dry. If required, follow the
instructions given in the AFU User
Manual to clean them.
4. Check that the external air supply
is pressurised and that the quality
of air conforms to the requirements
detailed in Section Breathable Air of
this Manual.
DS4 ALARM
WARNING: The sound emitted by the
DS4 alarm is VERY loud. Warn others
before activating the alarm.
1. Activate the DS4 alarm by inserting
the key into the switch and turning the
key in a clockwise direction.
2. Confirm that the red warning light
illuminates and the audible alarm
sounds.
3. Connect ModulAir 2 to the external air
supply.
4. Once the safe pressure level is reached,
confirm that the DS4 resets from the
alarm condition; (i.e. the audible alarm
ceases, the red light extinguishes and
the green light illuminates).
5. Ensure that the yellow light IS
NOT illuminated. If the yellow light
illuminates, the battery level is low and
battery replacement is required.
WARNING: DO NOT use the equipment
if the yellow (low battery level) warning
light is illuminated.
DO NOT remove the DS4 battery
compartment cover in a potentially
explosive or flammable atmosphere.

MODULAIR 2 Iss M13
AIR FILTER UNIT
1. Check that the AFU pop-up indicator
is GREEN and that the medium-
pressure gauge needle is in the green
sector.
2. Listen for audible leaks from the unit.
3. Follow the instructions given in the
breathing apparatus User Manual
and connect the breathing apparatus
pigtail and facemask(s) to the airline
hose(s). Pull the connections firmly to
ensure that they are secure.
4. On ALL breathing apparatus
connected, turn the DV bypass
valve(s) to the ‘ON’ position. With air
free-flowing from the DV(s), check
that the medium-pressure gauge stays
in the green sector and that the DS4
does not alarm.
5. Turn the DV bypass valve(s) to the
‘OFF’ position and check that air no
longer flows from the DV(s).
6. Perform all pre-use checks detailed
in the User Manual of the breathing
apparatus to be used with ModulAir 2.
INITIAL CHECKS - (CYLINDER
SYSTEM)
1. Check that the cylinder connector(s)
is/are connected to the cylinder
valve(s) and that all bleed screws are
closed.
2. Open the bleed screw OPPOSITE the
cylinder to be tested.
3. Open the cylinder valve to be tested
and check that the high-pressure
gauge shows at least 80% full.
WARNING: Replace cylinders that are
less than 80% full.
4. Check to ensure that there are no
leaks from the open bleed screw.
5. Allow 30 seconds for the system to
pressurise. Close the cylinder valve
and bleed screw.
6. Observe the high-pressure gauge and
check that pressure loss is less than 10
bar per minute. A drop of more than
10 bar per minute indicates that there
is a leak.
7. Use the DV bypass valve to bleed the
system. Check that the warning whistle
sounds when the high-pressure gauge
reads between 50 and 60 bar.
8. Repeat operations 1 to 6 for each of
the remaining cylinders in turn.
Note: Ensure that air is drained through
the DV bypass valve before commencing
tests on next cylinder.
9. Open one cylinder valve fully.
10. On ALL breathing apparatus
connected, turn the DV bypass valve(s)
to the ‘ON’ position. With air free-
flowing from the DV(s), check that the
medium-pressure gauge stays in the
green sector and that the medium-
pressure whistle does not alarm.
11. Turn the DV bypass valve(s) to the
‘OFF’ position and check that air no
longer flows from the DV(s).
12. Follow the instructions in the breathing
apparatus User Manual to check the
facemask, DV and pigtail.
HOSES
1. Examine all hoses for signs of damage
such as splits, abrasions and deep
crazing (minor crazing is acceptable).
2. Examine all couplings for signs
of damage and ensure that all
connections are securely made.

14MODULAIR 2 Iss M
WARNING: DO NOT use hoses or
couplings that exhibit signs of damage.
CHANGING A CYLINDER
WARNING: DO NOT mix cylinders of
different charging pressures when using
the equipment. Fit only FULLY-CHARGED
cylinders.
When a cylinder is changed while the
apparatus is in use, ensure that an
adequate supply of air is available in the
on-line cylinder for breathing apparatus
wearers.
To prevent possible equipment failure,
DO NOT charge the pneumatic system
utilising more than one cylinder or
operate the ModulAir 2 system with more
than one cylinder valve open.
1. On the empty cylinder, release the
hand-wheel locking catch and close
the cylinder valve (A).
2. Open bleed screw (B) to vent the
cylinder connector. Close the bleed
screw and disconnect the cylinder
connector from the cylinder.
3. With the frame in a horizontal position,
release the cylinder band catch and
remove the cylinder.
4. If the replacement cylinder is of a
different size, adjust the cylinder band
accordingly (see Section Adjusting
Cylinder Bands).
5. Slide the charged cylinder into the
frame, ensuring that it is correctly
located against the end of the frame.
6. Fit and securely tighten the cylinder
connector.
7. Position the cylinder band around
the cylinder and secure by turning
the butterfly catch 90° clockwise
and folding the catch flat. (Minor
adjustments can be made using the
cam-lock fastener: turn clockwise to
tighten and anti-clockwise to loosen).
8. On the replacement cylinder, open the
cylinder valve the close the on-line
cylinder valve. Check that the high-
pressure gauge reading is at least 80%
full.
ADJUSTING CYLINDER BANDS
1Cylinder Band
2Retaining Screw
3Cradle Flap
4Locking Catch
1. Use a 4mm Allen Key to remove the
cylinder band retaining screw and
release the cylinder band.
2. Re-position the cylinder band
according to the hole-positions given
in Table 3. Replace the retaining screw
and tighten securely.
3. Position the cylinder in the frame and
fasten the cylinder band butterfly
catch.
CHANGING THE DS4 BATTERY
WARNING: DO NOT remove the
DS4 battery compartment cover in
a potentially explosive or flammable

MODULAIR 2 Iss M15
atmosphere.
1. Remove the four screws that secure
the battery compartment cover to the
DS4 unit. Place battery compartment
cover aside.
2. Withdraw the battery and holder from
the battery compartment.
3. Remove the battery from the holder.
4. Replace the battery in the holder and
refit into the battery compartment.
5. Replace the battery compartment
cover and secure in position with the
four screws. Tighten screws evenly,
DO NOT over-tighten.
DURING USE
WARNING: When in use, a competent
person MUST remain with the supply
system at all times to act as base controller
and monitor the air supply. Under NO
circumstances must the equipment be
left unmanned when wearers are being
supplied from the unit.
EXTERNAL AIR SUPPLY WITH
CYLINDER BACK-UP
If the low-pressure alarm sounds (DS4
or medium-pressure whistle), or if the
medium-pressure gauge falls below 5 bar:
1. Fully open one cylinder valve.
2. Check that the high-pressure gauge
reading is greater than 80% and that
medium-pressure gauge is above 5
bar.
3. If required, disconnect the external air
supply.
CYLINDER SUPPLY
If the high-pressure warning whistle
sounds:
1. Open the next designated cylinder
valve fully.
2. Close the cylinder valve and open the
bleed screw on the empty cylinder.
3. Replace the empty cylinder.
4. Mark the empty cylinder accordingly
and store separately from full cylinders.
AFTER USE
The following procedure covers all options
available with ModulAir 2 and covers the
apparatus in general.
1. Close the cylinder valve and open the
bleed screw on the active cylinder.
2. Switch off the DS4 unit by turning the
key in a counter-clockwise direction.
3. Disconnect the external air supply.
4. Open the breathing apparatus bypass
and vent air from the pneumatics.
5. Replace used cylinders with fully-
charged cylinders.
6. Disconnect the breathing apparatus
from the airline. Clean, test and inspect
the breathing apparatus in accordance
with the appropriate User Manual.
7. Examine hoses for damage or
excess wear such as splits, kinks and
abrasions. Replace damaged or worn
hoses.
8. Examine all couplings for wear or
damage and ensure that all connections
are securely made. Replace items with
worn or damaged connectors.
9. Rewind the airline hose onto the hose
reel.

16MODULAIR 2 Iss M
10. Connect the hose CEJN outlet to the
parking connector on the hose reel.
This prevents the hose unwinding and
vents any pressure left in the medium-
pressure circuit.
11. Firmly grasp and pull the winding
handle knob away from the hose reel.
Fold the knob against the handle.
CLEANING
CAUTION: Do not drop the hose ends
onto the floor as this may damage the
couplings.
1. Clean all parts of the apparatus with a
mild soap and water solution, followed
by a thorough rinse with clean water.
Unwind the hose to ensure that all
parts are cleaned.
2. Allow to dry away from direct heat.
Dry the air-hose thoroughly prior to
rewinding onto the reel.
3. Inspect all parts of the apparatus for
damage and check the function of
CEJN hose couplings.
4. Follow the cleaning instructions given
in the breathing apparatus, DS4 and
AFU User Manuals.
BREATHING APPARATUS LOG
A breathing apparatus Log must be
maintained for each apparatus and must
be retained for future reference.
A breathing apparatus Logbook, is
available from Scott Safety (under Article
Number 1034745) for this purpose.
The log must contain:
Name and address of the employer
responsible for the apparatus.
Name and signature, or unique
authentication, of the person
conducting the tests.
Manufacturer, model and serial number
of the equipment, together with details
of any other distinguishing features or
markings that enable it to be clearly
identified.
Condition of equipment and details of
any faults found during the tests, and
any remedial action taken.
Types of test conducted.
Date of the tests.
Air pressure within the cylinders.
The length of time that the equipment
was in use must be recorded (for AFU
servicing requirements).

MODULAIR 2 Iss M17
STORAGE AND
TRANSPORTATION
The Device must be protected from
damage during transportation.
OBSOLESCENCE
Refer to product marking and packaging.
SCHEDULED MAINTENANCE
MONTHLY
1. The equipment must be checked
and tested at monthly intervals
in accordance with the After Use
instructions contained in this Manual.
2. Details of these tests must be recorded
within the appropriate register and
retained for future reference.
Note: In the United Kingdom, monthly
testing is a statutory requirement under
COSHH (Control of Substances Hazardous
to Health) regulations.
ANNUALLY
1. The equipment must be tested and
serviced in accordance with the
ModulAir 2 Service Schedule, within a
maximum period of one year.
2. Full details of servicing requirements
can be found in the ModulAir 2
Service Manual, which is available
from Training and Technical Support
Services at Scott Safety upon
completion of a formal training course
in maintenance of the apparatus.
3. In order to maintain correct functioning
of the equipment, if it is subjected to
excessive use, it may be necessary to
test the equipment on a more frequent
basis than that stipulated.

English (GB/AU)
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