Scott Safety RAS, Manual

2

RAS

INTRODUCTION

APPROVALS

RAS

 apparatus is ‘CE’ marked in accordance 

with EEC Directive EC/686/1986.

It is approved to European Standard EN 
14593-1:2005 (Respiratory Protective Devices - 
Compressed air line breathing apparatus with 

demand valve).

Facemasks are approved to EN136:1998.

Scott Safety

 is quality assurance approved to: 

ISO 9001.

Notified Body

BSI (0086)

Kitemark Court,
Davy Ave,
Knowlhill,
Milton Keynes,
MK5 8PP.
England

LIMITATIONS OF USE

RAS

 must only to be used with 

Scott Safety

breathing apparatus 

Facemasks

.

Only to be used by competent personnel 

trained by 

Scott Safety

 Instructors, or their 

approved agents.

DO NOT use with spectacle side arms, beards 
(or other facial hair), or clothing that may 
prevent the facemask forming a good seal with 
the face. 

BREATHABLE AIR

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

COMPRESSED AIR AIRLINE 

SUPPLIES

Air for use with compressed air airlines must 
conform to EN12021:1999. 

Airline pressure must be between 5.0 - 9.0 bar 
(70 - 130psi).  Airflow supply capacity for a 
single airline is given in Table 1.  Generally - each 
additional wearer requires an extra 150 litres/
minute, each additional pair of wearers requires 
300 L/min for one wearer and 450 L/min for 
two wearers (see Table 1).  All measurements 
must be taken at the wearer end of the airline. 

An airline flow tester (Article Number 1035978) 
is available from 

Scott Safety

.

Example: 

 for 8 users (4 pairs) the recommended 

flow is 4 x (300 + 150) = 1800 litres/minute.

Table 1 Wearer Air Consumption

No. of Wearers

Airflow (L/min.)

1

300

2

450

3

750

4

900

Airline hoses used with 

Scott Safety

 breathing 

apparatus must be 

Scott Safety

 products, 

approved to EN14593-1:2005.

PERSONNEL TRAINING

Personnel who use breathing apparatus must 
be fully trained in accordance with Local 
National Regulations and these instructions.

These instructions cannot replace an accredited 
training course run by fully qualified instructors 
in the proper and safe use of 

Scott Safety

breathing apparatus.

Contact 

Training & Technical Support Services 

or a 

Scott Safety

 distributor for training 

information.

Training & Technical Support Services,
Scott Safety

,

Pimbo Road, West Pimbo,

Skelmersdale, Lancashire,
WN8 9RA, United Kingdom.
Tel:  +44 (0) 1695 711711
Fax: +44 (0) 1695 711775

SERVICING

RAS

 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 

Scott Safety

RAS

 Service Manual, copies of which can only 

be obtained by registered holders of a current 

certificate.

Your distributor or 

Training and Technical 

Support Services

 at 

Scott Safety

 will be 

pleased to provide training course details and 
quotes for service contracts.