RAS3
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.
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.
TECHNICAL
DESCRIPTION
GENERAL
RAS is a positive pressure airline apparatus with
a bandolier and waistbelt harness. The supply
airline hose connects to a CEN connector that
supplies the facemask mounted demand valve
via a length of medium pressure air hose. The
facemask with filter and can be fitted with a
suitable Scott Safety Particulate filter when
entering, or leaving the hazard area with the
airline disconnected. In this mode the facemask
functions as a negative pressure device.
WARNING: RAS must not be used in oxygen
deficient or hazardous atmospheres when
disconnected from the Airline supply.
A NRV in the airline connector prevents
contaminant entering the breathing hose while
the wearer is disconnected from the airline.
FILTERS
The service life of the filters is dependent on
the environment and the use-by-date marked
on the filter. DO NOT use damaged, wet,
clogged, or time expired filters.
The filter screws into the facemask’s screw
connector. A filter cover is provided to
preserve the filter when an airline is in use. A
blank-plug is provided to seal the mask when
a filter is not fitted. Filters must conform
to EN14387:2004+A1:2008 or EN143 with
an EN148-1 standard thread and must be
appropriate for the known work place hazards.
RAS apparatus may be used with up to 90
metres (297 feet) of medium pressure airline
hose, with a burst pressure in excess of 80 bar.
When likely to come into contact with corrosive
fluids or materials, it is recommended that only
anti-static hoses are used.
DEMAND VALVE HOSE
The hose has a working pressure of 16 bar and
a burst pressure in excess of 80 bar.
The airline manifold assemblies have an integral
particle filter to remove contaminant from the
air supply.
The RAS airline manifold assemblies incorporate
a NRV.
DEMAND VALVE (DV)
The DV operates in conjunction with the exhale
valve in the facemask 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.
PANASEAL / VISION 3 /
PROMASK FACEMASK
The Panaseal, Vision 3 and Promask facemasks
are available, manufactured in non-dermatitic
Neoprene or Silicone and have a 5-point
head harness. A neckstrap is provided. The
polycarbonate visor is impact resistant.
An inner mask minimises CO2 dead space and
visor misting. A speech diaphragm is fitted.
