Description Of The Apparatus - MSA DSL Serie Manual De Instrucciones

Description of the Apparatus

2. Description of the Apparatus
MSA compressed air line breathing apparatus is respiratory protection equipment which is independent of the
ambient atmosphere. Before use always check for any other risks which have not been accounted for and confirm
the correct PPE selection. Depending on the compressed air source, a number of people can be supplied with
breathable air at the same time as required.
Breathable air is delivered to the user from a compressed air supply system (e.g. factory line) or from a
compressed air cylinder (or cylinders) with DSG or MASS pressure reducing valves, through the compressed air
supply hose, connector on belt, lung governed demand valve, and full face mask. (For suitable lung governed
demand valves and full face masks, see Section 1).
Exhaled air escapes through the exhalation valve in the full face mask, and passes directly into the surrounding
atmosphere.
With the ASV basic apparatus (with Automatic Switch Valve), breathable air is also supplied from a compressed
air supply system (e.g. factory line) or from a compressed air cylinder (or cylinders).
In connection with the related self-contained breathing apparatus (EN 137:2006), the ASV basic apparatus further
ensures the supply of breathable air in the event of pressure loss in the compressed air supply hose (for suitable
self-contained breathing apparatus, see Section 1).
NOTE: Use of SCBA with SL (Single Line) pneumatic systems require an additional medium pressure air hose
(10046165) or the SCBA with 3C version, in order to connect the SCBA to the ASV
Compressed air line breathing apparatus can be used where the ambient air has become unbreathable for
humans as a result of accumulated pollutants, and filtering devices can no longer be used (e.g. due to a lack of
oxygen). Compressed air line breathing apparatus can be used where that a supply of breathable air is required
for a prolonged period. Pay attention to the local recommended wearing time and weight limits.
Because of its light weight and uncomplicated structure, it has numerous possible applications, e.g.:
 for prolonged work linked to particular locations in industry, trade, agriculture, building sites
 for repair and maintenance jobs inside tanks and containers
 in mining
GB
The DSL \ MASS series compressed air line breathing apparatus are suitable for use at low and high
temperatures from - 30°C to 60°C!
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Important!
The breathable air must conform to EN 12021. Excessive levels of humidity in the breathing air at
temperatures below 4°C can cause the apparatus to malfunction (due to freezing)! Use a water
separator if necessary.
The use of oxygen or oxygen-enriched air is not allowed.
DSL Series