Special Applications - Spasciani RC Manual Del Usuario

3.3.7 Full face mask (5)
The mask can be of the following types:
Model Code
TR 2002 A CL3 113000000 EPDM
TR 2002 S A CL3 113060000 Silicone
TR 2002 BN CL3 113010000 EPDM
TR 2002 S BN CL3 113070000 Silicone
TR 82 A 112300000 EPDM
TR 82 B 112310000 EPDM
3.3.8 Switch over device (4 way valve) (26)
A four way valve, available on request, allows feeding a second man who will be provided with the audible warning too.
In this case it is also mandatory to use the special supporting belt for the extension hose. The same valve also allows
connecting the b.a. to an airline to increase the duration. During the feeding from airline (set at 5.5) the cylinder is
automatically shut off.
3.4 SPECIAL APPLICATIONS
The RC and RL systems can be connected to two different type of backup systems, to ensure greater safety to operators.
3.4.1 Back up system EN 137:2006 (BVF‐BU EN 137) (Fig.4)
RL and RC systems can be connected to a switch over device (4 Way Valve) (26) attached to the waist belt, that enables
to connect a back up system. The back up system is in this case a breathing apparatus Spasciani series BVF, named BVF‐
BU (31) that meets the requirements of EN 137 standard. The 4 Way Valve, in case of failure of the feeding line,
automatically switches to the small cylinder. In order to use the BVF‐BU as a back up system be sure to switch handle
(32) to the "Back Up" position so that the BVF‐BU system is set to continuously give the alarm while in use; this means
that if the operator is breathing from the BVF‐BU cylinder the alarm is on all the time and the operator is well aware of
its autonomy.
3.4.2 Back up supply system (BUSS) (fig.3)
The BUSS here described gives extra safety margin by adding a cylinder cascade to the RL system which is activated in
case the main air supply fails for any reason.
The Back Up Supply system is made by connecting an RL and an RC system by means of two 4 Way Valve (26). Each 4
way valve is connected to a medium pressure tube coming from the line and to one medium pressure tube coming
from the RB reducer of the RC respirator.
One four way valve is connected to a medium pressure tube feeding the breathing tube placed on the reel and the
other is provided with an attachment for the breathable supply tube.
The complete BUSS system can be mounted on a mobile or fixed frame equipped with:
- Rack to hold the required number of cylinders (20)
- Filter unit for the medium pressure air line (28)
- Air line pressure reducer with gauge (30)
- High pressure RB reducer with gauges and alarm (3)
- Two four way valves (26)
The BUSS system can be set on demand so that when the air line is cut off and the wearer is breathing from the cylinder
(s) system the warning device at the mask and at the reducer start simultaneously. Alternatively the alarm starts when
the air supply is reduced to the alarm set point.
3.5 WARNINGS AND LIMITS FOR USE
 It is extremely important to follow the instructions given in this document as well as the relevant sections of all
booklets that come with the products.
 The described respirators shall not be used underwater even if their operation is unaltered when accidentally submerged.
 If RL respirators are directly fed from a compressor (and not with the RB reducer) the warning device at the demand
valve cannot operate.
 The breathing systems herein described are not suitable for firefighting.
 The RB reducer is designed to feed a maximum of two operators in any configuration.
 The autonomy of the apparatus depends on the air reserve. For details on some of the cylinder capacity available on
demand, please see table of par. 4. Carefully consider the air reserve before starting the intervention with the apparatus.
 Always verify that the high pressure supply system is compatible with the apparatus and that it has been approved
to work within the same (or higher) humidity and temperature ranges.
 Always connect the system to compatible high pressure supply systems complying with the relevant requirements
in the country of application.
 If the use of compressed air line breathing apparatus involves the work of the operator at a big distance from the
air source, the presence of a second operator near the same source is highly recommended.
The masks TR 82 A, TR 2002 A CL3 and TR 2002 S A CL3 are provided with
Facepiece
threaded connector to EN 148‐3, compatible with demand valve of A Type.
material
The masks TR 2002 BN CL3 and TR 2002 S BN CL3 are provided with special
quick connector according to DIN 58600 for use with demand valve of BN
type. These masks are also provided with a special patented mechanism
that enables use with negative pressure devices (i.e. filter having a standard
thread connector to EN 148‐1).
The mask TR 82 B is provided with special quick connector according to DIN
58600 for use with demand valve of BN type. All the full face masks are
certified according to EN 136:1998 standard, class 3. For more details please
refer to relevant instructions.
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