Basic Unit Bd Mini With Medium Pressure Y-Piece - MSA BD mini Instrucciones De Funcionamiento

MSA
2.2.

Basic unit BD mini with medium pressure Y-piece

Using a medium pressure Y-piece, which is blocked in one direction, you can
connect the compressed air breathing apparatus to a compressed air hose unit
(e.g. a ring main), without having to interrupt the breathing
Before use, connect the Y-piece between the pressure reducer and the lung
governed demand valve.
The medium pressure of the external air supply should be greater than
medium pressure of the compressed air breathing apparatus.
This prevents inadvertent air removal from the compressed air
breathing apparatus.
If required, you can close the cylinder valve of the compressed air
cylinder.
Warning!
If the external air supply fails and the cylinder valve is closed there is
a danger that you will no longer be supplied with breathing air.
In this event, immediately open the cylinder valve on the compressed
air cylinder.
2.3. Basic unit BD mini with automatic switching valve ASV
Instead of the Y-piece, you can connect the compressed air breathing apparatus
to a compressed air hose unit (e.g. a ring main) using an automatic switching
valve, without having to interrupt the breathing.
Before use, connect the Y-piece between the pressure reducer and the lung
governed demand valve. The switching valve switches automatically to the
external air supply if the medium pressure is sufficient in the external supply.
If the minimum pressure falls below a certain level, it switches back to the
compressed air breathing apparatus without interrupting the flow of air.
When breathing from the compressed air breathing apparatus,
a warning signal is emitted by the switching valve which indicates
consumption from breathing air being carried with the user.
The function of the warning signal on the pressure reducer is not
affected by this.
Further information concerning the handling of the switching valve and the
compressed air hose unit can be obtained from the relevant operating
instructions.
GB
BD mini
DESCRIPTION
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