Scott Safety SIGMA 2 TYPE 2 User Manual

SIGMA 2 TYPE 2

2023726 B

03.2013

CE0086

AS/NZS1716 : 2012 - Respiratory Protective Devices
Lic 5021 BSI Benchmark

Sigma 2 Type 21

WARNINGS

Please Read Carefully and Fully Understand

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 SIGMA 2 TYPE 2 User Instructions may result in injury or death.

Scott Safety has 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:

Breathing apparatus users must be fully trained in the use and care of self-contained,
compressed air breathing apparatus.

Ensure that the selection of the apparatus type is sufficient for the tasks being undertaken
and the hazards likely to be encountered. Please refer to National Regulations for guidance.

In order to ensure the optimum performance and user safety, the apparatus must be
tested and serviced in accordance with the notes in ‘Personnel Training and Servicing’ and
‘Scheduled Maintenance’.

The quality of air used to supply and charge breathing apparatus must meet the
requirements of EN 12021 : 1999. See ‘Breathable Air’ for details.

The wearing of beards, side-burns or spectacles may adversely affect the sealing of a
facemask to the wearer’s face.

The apparatus is not designed for use underwater.

The harness must not be used as a vehicle seat restraint.

GB

DISCLAIMER

Failure to follow 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 in whole, or used for purposes other than its intended
purpose without the written permission of Scott Safety.

2

Sigma 2 Type 2

NOTIFICATIONS FOR BREATHING APPARATUS

IMPORTANT

SIGMA 2 TYPE 2 must be serviced in
accordance with the Servicing Schedule on
at least an annual basis. Please refer to notes
under Servicing.

These instructions for the use, care and
maintenance of the apparatus must be followed
to ensure the correct and safe operation of
SIGMA 2 TYPE 2.

For any enquiries regarding the use of Scott

Safety breathing apparatus, please contact
Training and Technical Support Services at
Scott Safety.

BREATHABLE AIR

Air used to supply or charge breathing air may
be natural or synthetic and must comply with
EN 12021 : 1999 or AS/NZS 1715 : 1994.

The water content shall not exceed 50 mg/m3
for 200 bar apparatus and 30 mg/m3 for 300
bar apparatus

APPARATUS DURATION

All durations quoted are nominal, based on
an Average Wearer Consumption Rate of 40
litres/minute and FULLY CHARGED cylinders.
Actual Wearer Consumption rates vary due to
many factors, such as:

Workload: high work rates increase
consumption rates.

Weight of apparatus and use of heavy or
restrictive clothing.

Work environments with extremes of heat or
cold.

Physical fitness of the wearer.
Other factors include emotional stress and

fatigue.

It is important that all wearers are aware of
these factors and take account of them when
assessing cylinder duration.

PERSONNEL TRAINING

Personnel who use self-contained, compressed­air breathing 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.

SERVICING

SIGMA 2 TYPE 2 must be serviced at scheduled
intervals by personnel who have completed
a formal training course and hold a current
certificate for servicing and repairing Scott
Safety breathing apparatus. Details of the
servicing schedule are contained in the Scott
Safety SIGMA 2 TYPE 2 Service Manual, copies
of which can only be obtained by registered
holders of a current certificate.

Your distributor or Training and Technical
Support Services can provide training course
details and quotes for service contracts. Please
see contact on back for details.

SPARE PARTS AND ACCESSORIES

Our Customer Services Department 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.

Sigma 2 Type 23

INTRODUCTION

OVERVIEW

SIGMA 2 TYPE 2 is a self-contained, open circuit,
compressed air, positive pressure, breathing
apparatus, for use in marine, industrial and fire
applications where a high level of respiratory
protection is required.

THE SIGMA 2 TYPE 2 harness is made from a
flame-retardant Kevlar™ blend.

SIGMA 2 TYPE 2 is approved to the following
international standards:

EN137 2006 Including Annex A, Self-contained
Breathing Apparatus: type 2 – Fire Fighting

Marine Equipment Directive
AS/NZS 1716

SIGMA 2 TYPE 2 is ‘CE’ marked in accordance
with EEC Directive EC/686/1986 plus
amendments

NOTIFIED BODIES

BSI (0086)
Kitemark Court
Davy Ave
Knowlhill
Milton Keynes
MK5 8PP
England

SIGMA 2 TYPE 2 is marked in accordance
with EN137 : 2006 and AS/NZS1716 : 2012. An
explanation of those markings is given in the
following tables:

OPEN CIRCUITPOSITIVE

PRESSURE SELFCONTAINED

BREATHINGAPPARATUS

CertifiedtoEN137 CLASS2(2006)

AS/NZS1716(2012)

MEETS M.E.D. WITH
CYLINDERS >1200l
FREE AIR CAPACITY

ScottSafety,

PimboRoad, West Pimbo, Skelmersdale,

Lancashire,WN8 9RAUnited Kingdom

Tel: [phone]Fax:[phone]

Serial Number:

Date of Manufacture:

SIGMA2

TYPE 2

0086

/ . .

H

A

B
D

I

C

E

F
G

Key Meaning

A= Product brand name

B= Product model/designation

C= Symbol-refer to User Instructions

D= Apparatus description

E= Standards to which apparatus is certified

F= Number of Approval Body

G= Serial number of apparatus

H= Date of manufacture

I= Contact details of manufacturer

4

Sigma 2 Type 2

CYLINDER DURATION CALCULATION

Durations are nominal and based on an Average Wearer Consumption Rate of 40 L/min and are
for fully charged cylinders.

Total Duration =

Cylinder Free Air Capacity

Average Wearer Consumption Rate

Nominal Duration = Total Duration minus the Warning Period

Warning Period =

Cylinder Water Capacity x Whistle Operating Pressure

Average Wearer Consumption Rate

FACEMASKS

SIGMA 2 TYPE 2 is approved for use with:
Vision 3, PanaSeal, PanaVisor and Promask PP

full facemasks, all of which conform to EN 136,
Class 3 and AS/NZS1716 : 2012.

All are available with five point, fully adjustable
web or net head-harnesses and neck-straps.

An inner mask minimises CO2 dead space and
visor misting. A speech diaphragm is fitted.

PanaSeal is suitable for medium and smaller
face sizes. PanaVisor is suitable for medium to
larger face sizes.

Vision 3 is available in three sizes: small,
medium and medium/large which cover most
face sizes. Promask PP is available in two sizes:
small/medium and medium/large.

Vision 3 is moulded in grey silicone, while
PanaSeal and PanaVisor are of non-dermatitic,

black neoprene or blue silicone. Promask PP is
moulded in hypo-allergenic, black Procomp™
with a soft silicone inner mask.

The polycarbonate visors conform to EN 166
Grade B for medium impact-resistance and
AS/NZS 1337: 1992 for high-impact resistance.

Versions of the above masks are also available
with helmet attachment clamps fitted. Please
contact Customer Services for further
information.

DEMAND VALVE (DV)

The DV operates in conjunction with the
facemask spring loaded exhale valve to maintain
a positive pressure within the facemask.

The DV has a reset button that enables wearers
to close the airflow through the DV, allowing
the facemask to be removed without loss of
cylinder air.

When the apparatus is donned the DV is
normally ‘reset’ (closed), and is opened
(activated) when the wearer takes a first breath.

Main components:

1 Reset Button
2 Bypass Knob
3 Locking Catch
4 Outlet Port O-Ring

1

4

2

3

REDUCER

The combined pressure reducer and cylinder
valve connector reduces high air-pressure from
the cylinder to a medium pressure of between
5 and 9 bar.

Sigma 2 Type 25

GENERAL

Check that all parts are clean and undamaged.
Ensure that the shoulder harness is fully

slackened and that a fully charged cylinder is
securely attached to the back-plate. Replace
discharged cylinders.

Check that the harness slides freely through
buckles.

Check that the facemask visor is clear and free
from marks and damage that might impair
vision. Fully slacken head-harness straps.

Apparatus that fails any of these checks must
be serviced in accordance with the SIGMA 2
TYPE 2 Service Manual.

PRE-USE AND MONTHLY CHECKS

PNEUMATICS

DEMAND VALVE

Check that the DV O-ring is clean and
undamaged.

Fit the DV to the facemask and check that the
locking catch clicks into place. Gently twist the
DV to ensure that it is securely fitted.

CHECK FACEMASK

Don the facemask.
Open the cylinder valve and check that the

cylinder is full.
Check that the facemask pressurises. If

necessary adjust the mask to obtain a leak
tight fit. DO NOT over-tighten the harness as
this distorts the mask.

Check cylinder connector O-ring is clean and
undamaged.

Screw hand-wheel connector firmly into the
cylinder valve outlet.

Check that pressure gauge, whistle and hoses
are in good condition and are not kinked or
stretched.

Check that the bypass valve is closed (flat area
on knob is toward the face-piece).

Press the black reset button.

6

Sigma 2 Type 2

POSITIVE PRESSURE, BYPASS AND
LEAK TEST

WHISTLE TEST

REPLACING CYLINDERS

Insert fingers in the facemask seal and check
there is a steady flow of air out of the mask.

Remove fingers and allow mask to re-seal.

Open the bypass and check there is a steady
flow of air into the facemask.

Close the bypass.
Close the cylinder valve, hold your breath, and

monitor the pressure gauge for 10 seconds.
Check that the reading does not drop during
this period.

With the cylinder valve still closed, monitor the
pressure gauge and breathe down air in the
system. Check that the whistle sounds clearly
at between 50 and 60 bar.

Release head-harness and remove the
facemask.

Apparatus that passes all of these checks is
now ready for use.

Check that the cylinder valve is closed and
slowly undo the cylinder connector hand­wheel. Remove the reducer from the cylinder.

Grasp the sides of the cam-lock buckle with the
index finger and thumb of the right hand, use
the left index finger to slide back the ribbed
catch and lift the buckle.

Open the buckle and lift the empty cylinder
from the back-plate.

Sigma 2 Type 27

Fitting a replacement Cylinder of
the same size.

Fit the cylinder valve through the cylinder valve
retainer, connect the buckle hinge and close
the cam-lock.

Fitting a replacement Cylinder of a
different size.

DONNING PROCEDURE

HARNESS

DON FACEMASK

Check that the bypass is shut and press the
DV reset button).

Head Harness

Adjust the length of the cylinder band to permit
the buckle hinge to be connected.

Adjust the cylinder band length until the
cylinder band grips the cylinder firmly, then
close the cam-lock.

Tidy the free end of the cylinder band into the
loops.

Don apparatus. Adjust shoulder straps for a
comfortable fit, then fasten waist-belt and
adjust for a snug fit.

Let facemask hang loosely from face and
breathe normally.

8

Sigma 2 Type 2

Fit the chin into the chin-cup, pull the harness
over the top of the head and tighten the straps
in sequence: bottom, middle, top. DO NOT
over-tighten.

Head-net

Tighten the side straps for a firm, comfortable
fit. DO NOT over-tighten as this distorts the
face seal.

OPEN CYLINDER VALVE

With the head-net straps fully extended, insert
the chin into the chin-cup and use the loop at
the back of the head-net to pull the head-net
over the head.

Tighten the top strap to bring the visor and ori­nasal mask to the correct level.

Slowly open cylinder valve fully and inhale
sharply to start the air supply to the facemask.

Sigma 2 Type 29

FACEMASK SEAL CHECK

BYPASS CHECK

LEAK TEST

WHISTLE TEST

Insert fingers in facemask seal and check for
a steady flow of air from the mask. Remove
fingers and allow mask to re-seal.

Open the bypass and check there is a steady
flow of air into the facemask.

Close the bypass.

Take a breath and hold it. Release hand-wheel
locking-mechanism and close the cylinder
valve.

Listen for leaks and monitor gauge for 10
seconds. The reading on the gauge should not
fall during this period.

Slowly breathe down the air from the system
and check that the whistle sounds clearly at
between 50 and 60 bar.

If the whistle or facemask fail the test, return
the apparatus for servicing, with an explanatory
note attached, in accordance with the SIGMA 2
TYPE 2 Servicing Instructions.

10

Sigma 2 Type 2

CYLINDER PRESSURE

Open cylinder valve and check pressure gauge
to ensure that cylinder has a minimum of 80%
of the fully charged capacity:

For 200 bar cylinders - 160 bar.
For 300 bar cylinders - 240 bar.
When fully satisfied with apparatus, proceed to

undertake tasks as required.

DOFFING INSTRUCTIONS

REMOVE FACEMASK

TURN OFF CYLINDER

REMOVE APPARATUS

CLEAN AND CHECK APPARATUS

The apparatus must be cleaned and tested in
accordance with the instructions given in ‘After
Use’, prior to being returned to service.

Take a breath and press the reset button to
close the air supply.

Pull tabs on buckles forward to release the
head-harness or head-net. Remove facemask.

Disengage the cylinder valve hand-wheel
locking mechanism and turn hand-wheel fully
clockwise to shut the valve.

Release the waist-belt, slacken the shoulder
straps and remove the apparatus.

Open cylinder band, undo cylinder valve
connector and remove cylinder.

Mark cylinder as ‘empty’ and return for
charging.

Sigma 2 Type 211

AFTER USE

CAUTION:
DO NOT immerse DV or warning whistle in

water. A yellow cap is provided to protect the
DV outlet.

ALWAYS use the recommended cleaning
methods.

The apparatus MUST be thoroughly dried
prior to storage. Pay particular attention to
the valve flaps.

CLEAN FACEMASK

Note: Distel Cleansing and Disinfecting

Solution is available from Scott Safety in 1 litre
and 5 litre containers under Article Numbers
2008247 and 2008248 respectively.

Pump dispensers are available for the 5 litre
version of the above under Article Number
1017670

Distel Disinfecting Wipes are available from
Scott Safety in packs of 20 sachets under

Article Number 2004225.

CLEAN APPARATUS

CAUTION:
DO NOT use abrasive or solvent cleaners.

Fully slacken the shoulder straps and waist­belt. Clean off any dirt with a stiff brush or
sponge with warm water and soap, followed by
a thorough rinse.

Ensure that the pressure gauge face is clean.

DEMAND VALVE

Withdraw red locking catch, turn 90o clockwise
and remove the DV from the facemask.

Wash and disinfect the mask thoroughly
in a solution of Distel and warm water. See
following Note.

Rinse the mask thoroughly in clean running
water. Pay particular attention to flushing out
the exhale valve.

Hang mask by its neck-strap and allow it to dry
thoroughly away from direct heat or sunlight.

When dry, wipe facemask seals with Distel
disinfectant wipes.

Polish the visor inside and out with a clean, lint­free cloth and slacken the head harness, ready
for use.

Fit the protective yellow cap over the DV outlet
and use a small stiff brush with a mild soap and
water solution to clean around the catch.

If the catch does not move freely, return the
apparatus for servicing.

Check that the orange O-ring on the DV outlet
is clean and in good condition.

Replace O-ring if in less than perfect condition.

12

Sigma 2 Type 2

Operate the red locking catch a number of
times. Ensure that it moves freely and does not
stick.

CHECK APPARATUS

Check apparatus thoroughly for signs of wear
or damage.

Check hoses for signs of abrasion or damage.
Check harness straps and stitching for signs of

weakness.
Replace worn or damaged components in

accordance with the SIGMA 2 TYPE 2 Service
Manual.

If a fault is found, attach an explanatory note to
the apparatus and return it for servicing.

FIT FULLY CHARGED CYLINDER

Fit a fully charged cylinder in accordance with
the instructions contained within ‘Pre-Use and
Monthly Checks’.

LEAK TEST

Open cylinder valve. The DV will free flow.
Fit yellow protective cap over the DV outlet,
airflow will cease.

Check pressure gauge to ensure that the
cylinder is full.

Close cylinder valve and monitor the pressure
gauge for one minute. Check that the pressure
does not drop by more than 10 bar (one gauge
division) in this time.

If apparatus fails this test it must be withdrawn
from service and returned for servicing.

Gently lift the yellow DV cap and allow air to
vent from system. Check pressure gauge and
ensure that the warning whistle sounds clearly
between 50 and 60 bar.

RECORD TEST DETAILS

Record test details in accordance with local
regulations in a breathing apparatus logbook
(available from Scott Safety under Article
Number 1034745).

Information recorded usually includes:

Name and address of employer responsible
for the apparatus.

Make, model number or mark of the
apparatus, together with a description of any
distinguishing features, sufficient to enable
clear identification.

The date of the examination together with
the name, signature or unique authentication
mark of the examiner.

The condition of the apparatus and details of
any defects found and any remedial action
taken.

Cylinder air pressure.

STORAGE

Device must be protected from damage during
transportation.

The apparatus must be stored in a clean,
dry environment away from direct heat and
sunlight.

Storage temperature should not exceed +40°C
to -10°C.

Sigma 2 Type 213

WARRANTY

The products manufactured at our factories in
Skelmersdale and Vaasa carry a warranty of
12 months (unless stated otherwise) for parts,
labour and return to site. The warranty period
runs from the date of purchase by the end user.

These products are warranted to be free
from defects in materials and workmanship
at the time of delivery. Scott Safety will
be under no liability for any defect arising
from wilful damage, negligence, abnormal
working conditions, failure to follow the
original manufacturer’s instructions, misuse or
unauthorised alteration or repair.
Evidence of purchase date will need to be
provided for any claims arising during the
warranty period. All warranty claims must be
directed through Customer Services and in
accordance with our sales return procedure.

SCHEDULED
MAINTENANCE

MONTHLY

The apparatus should be examined and tested
at least once a month in accordance with the
instructions given in this manual under ‘Check
Apparatus’.

Details of such checks should be recorded
within the appropriate register and a copy kept
for future inspection. Please see ‘Record Test
Details’ for details.

ANNUALLY

The apparatus must be tested and components
replaced in accordance with the SIGMA 2

TYPE 2 Service Schedule, contained within the
SIGMA 2 TYPE 2 Service Manual. Please refer to

notes under ‘Personnel Training and Servicing’
for further details.

14

Sigma 2 Type 2

DECLARATION OF CONFORMITY

MARINE EQUIPMENT DIRECTIVE

Scott Health and Safety Limited

Pimbo Road, West Pimbo,

Skelmersdale, Lancashire,

WN8 9RA, England.

declares that the following Personal Protective Equipment:

Sigma 2 Type 2 Self-contained Compressed Air Breathing Apparatus’

Complies with the following Directive EN137 Types 2/2006.

Facemasks approved for use with this product: Panaseal; Vision 3 & Promask PP. All
facemasks comply with EN136 1998 and include AC 2003.

Is in conformity with the provisions of Council Directive 96/98 EC on Marine
Equipment. Type-Examination Certificate BSI/A.1/3.7/590448 issued by BSI (Notified
Body No 0086) relates.

Is in conformity with the provisions of Council Directive 89/686/EC including
amendments. Last amended 2010/68/EC. relating to Personal Protective Equipment
when assessed against Harmonised Standard BS EN137. Type-Examination Certificate
No 566516 issued by BSI Product Services (Notified Body No 0086) relates.

Is manufactured under a Quality Control System which has been satisfactorily assessed
against the requirements of Article 11, Section B of Council Directive 89/686/EEC;
96/98 EC MED MODULE D and Production Quality Assurance Module D Certificate
BSI/MED/PC/90907 issued by BSI (Notified Body No 0086) relates

Steve Thurgood
Engineering Manager,
Scott Health and Safety Limited.

25th June 2012

www.scottsafety.com

[e-mail]

Tel: [phone]

Fax: [phone]

Scott Safety

Pimbo Road, West Pimbo,
Skelmersdale, Lancashire,

WN8 9RA, England

© 2011 Scott Safety. All
rights reserved. SCOTT, the
SCOTT SAFETY Logo, Scott
Health and Safety, Sigma 2
Type 2 are registered and/
or unregistered marks of
Scott Technologies, Inc. or its

afliates.

English (GB)