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• Adjust the neck width of the hood by means of the elastic
neck strap. Use the control valve knob to set the air flow rate
to suit the work intensity. Fig. 3. In the fully closed position (turn
anti-clockwise), the flow is around 150 l/min, while in the fully
open position (turn clockwise), it is around 240 l/min.
2.5 Taking the hood off
Leave the work area before taking the hood off.
• Release the neck strap by releasing the buckle. Grip the top part
of the hood with both hands and pull the hood upwards/forward.
In emergency situations, the neck strap can be released without
releasing the buckle: Grip the neck strap with one hand on each
side of the buckle and pull firmly.
Releasing the compressed air tube / breathing hose
Both couplings are of safety type and are released in two stages.
Fig 5.
• Push the coupling towards the nipple.
• Pull the locking ring back.
2.6 Warnings/limitations
Warnings
As a general rule, the user must ensure that he will always be able to
retreat to a safe area without risk if the air supply should cease or if
he must remove the equipment for some other reason.
The equipment must not be used
• If the ambient air does not have normal oxygen content.
• If the pollutants are unknown.
• In environments that are Immediately Dangerous to Life and
Health (IDLH).
• With oxygen or oxygen-enriched air.
• If you find that breathing is difficult.
• If you can smell or taste the pollutants.
• If you feel dizzy or nauseous, or if you suffer any other type of
discomfort.
• If the warning whistle comes into operation, which indicates
that the air supply is lower than recommended.
Limitations
• In explosive or flammable environments, follow the regulations
that may be in force for such conditions.
• The air supply system should be equipped with an appropriately
rated and adjusted pressure relief safety valve.
• If your work intensity is very high, a partial vacuum may occur
in the facepiece during the peak of the inhalation phase, and
pollutants from the surroundings may then be drawn into the
facepiece.
• Use of the equipment together with spiral hose SR 360 is
restricted to situations in which there is little risk of damage
to the hose and if the freedom of movement of the user can
be restricted.
• A risk assessment has to be done to avoid possible perilous
connections possible at the workplace, e.g. Nitrox.
• The SR 63 is not approved for use with a mobile compressed
air system.
3. Technical specification
Air flow
150 l/min to 240 l/min, measured through the facepiece.
Manufacturer's minimum design flow: 150 l/min.
Compressed air supply tube EC
The following tubes are type approved together with all Sundström
compressed air fed equipment. Maximum working pressure 7 bar.
• SR 358. 9.5/15 mm rubber tube, made of polyester reinforced
PVC. Oil and chemicals resistent. 5 - 30 m.
• SR 359. 9.5/18 mm plastic tube, made of EPDM/Polyester.
Antistatic, heat resistant. 5 - 30 m.
• SR 360. 8/12 mm plastic spiral coiled tube made of Polyure-
thane. 2, 4, 6 and 8 m.
18
Compressed air supply tube AS/NZS
Approved tubes must be used if Australian Standards approval is
to be valid. Tubes from 5 -30 m or coupled to 90 m may be used.
Shelf life
The equipment has a shelf life of 5 years from the date of
manufacture.
Size
Manufactured in one size. The head harness is adjustable and will
fit the vast majority of head sizes.
Sound level
Less than 80 dB(A).
Temperature range
Storage temperature: from -20 °C to + 40 °C and a relative humidity
below 90 %.
Service temperature: from -10 °C to + 55 °C and a relative humidity
below 90 %.
Weight
770 g without control valve assembly and filters.
Working pressure
4 - 7 bar (400 - 700 kPa), measured at the connection to the
control valve.
4. Maintenance
Personnel who are responsible for maintenance of the equipment
shall be trained and well acquainted with this type of work.
4.1 Cleaning
Use a piece of soft cloth or a sponge dipped in a solution of water
and dishwashing detergent or the like. Rinse and leave to dry. In
the event of more serious soiling, white spirit or similar degreasing
agent can be used. Then wash with dishwashing detergent solu-
tion, rinse and leave to dry.
4.2 Storage
After cleaning, store the equipment in a dry and clean area at room
temperature. Avoid direct sunlight.
4.3 Maintenance schedule
The following schedule shows the recommended minimum
maintenance procedures required in order to ensure that the
equipment is always in functional condition..
Visual inspection
Functional check
Cleaning
Change of breathing hose
4.4 Spare parts
Use only genuine Sundström parts. Don't modify the equipment.
The use of 'pirate parts' or any modifications made to the equip-
ment may reduce the protective function and will compromise
the approvals.
Before
After
Annually
use
use
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