Publicité
a metal support for the cylinder. Its transparent cover allows for quick inspection of the device's cleanliness and maintenance status.
The metal container can be wall-mounted using a metal bracket to support the weight of the cylinder; it is ideal for fixed stations and
outdoor installations. For transporting the breathing apparatus, an orange ABS case is available, ensuring portability and protection.
It is available in versions for one or two cylinders (for both the twin-cylinder version and a spare cylinder).
2.7.8. Cylinder Protection Bag
Flame-resistant bags are available to protect cylinders of various sizes and aid in storage, even under extreme conditions.
3. USE
Warnings
All the preparatory and use operations of the self-contained breathing apparatus must only be carried out by qualified and trained
personnel. Make sure any accessory or auxiliary device or any other type of protective wear used in addition to the system does
not compromise or hinder its safety or hold. The autonomy of the self-contained breathing apparatus depends on the initial
amount of air available and on the operator's breathing rate, but also on the presence of accessories that could consume the air
(i.e. additional warning device, use of the second outlet on the pressure reducer). Always use devices that were preventively
checked. The operations described here below must always be followed before use.
3.1. Before use
3.1.1. Cylinder installation
a) Keep the cylinder vertically on a flat surface with the valve upwards and connect the reducer to the cylinder using the
appropriate swivel connector;
b) Lie down the equipment and lock the cylinder, pulling the belt and closing the buckle.
3.1.2. Connecting the demand valve
Insert the male and female quick connectors of the medium pressure hose. Apply little pressure to connect them.
Please note: Apply little axial pressure on the connections to disconnect them, while simultaneously pulling back the female
connector. Never disconnect if the hoses are under pressure!
For breathing apparatus RN T1 and RN FR T2 this operation is not needed since the demand valve is not equipped with quick
couplings but of a medium pressure hose in one piece already connected to the reducer. If you choose model RN FR T2 provided
with quick connectors medium pressure hose, please see the paragraph above for connection/disconnection operations.
Press the button (pos. 1 fig.5) to avoid air leaks when wearing the device.
3.1.3. Check the position of the hoses
The gauge and demand valve hoses are connected to the left shoulder strap via a Velcro closure system. It is allowed to let the medium
pressure hose pass beneath the left arm and fasten it to the waist belt, if so desired.
3.1.4. Check cylinder pressure
Slowly open the cylinder valve by at least 3 turns and check the pressure on the pressure gauge (pos. D, Fig. 4a): the pressure must not
be lower than 280 bar for cylinders with a working pressure of 300 bar.
3.1.5. Check the high-pressure section tightness
Open cylinder valve and pressurize the set. Close cylinder valve. The pressure must never go under 20 bar per minute.
3.1.6. Check the audible warning signal
• Open the cylinder valve and pressurize the device
• Close the cylinder valve
• Close the air outlet of the demand valve with the palm of your hand
• Release the locking mechanism (pos. 1, fig. 5) by pressing the rubber button in the center of the cover.
• Slowly release the air until the pressure reaches 70-65 bar, then perform small releases by raising and lowering the palm of your
hand. When the pressure gauge shows a pressure value of (55±5) bar, a strong audible vibration should be heard with each air
release, which will stop once the air in the hose is depleted. Note: It is recommended to release the air very slowly and wait a few
seconds at the alarm set pressure points. Rapid air releases may prevent the proper verification of the alarm signal.
• Reinsert the locking device (pos. 1 Fig.5).
3.2. Donning
Adjust the shoulder straps to their maximum length; therefore, lift the special padding and pull on the ends of the straps. Put on
the self-contained breathing apparatus and pull hard on the ends of the shoulder straps until the backrest is comfortably leaned
against your kidneys. Buckle the belt and pull on the loose ends until achieving the desired fitting.
Insert the free ends of the shoulder straps and the lumbar belt under the belt itself, making sure that the straps are adherent to
the protective jacket (this in particular for Type 2 breathing apparatus) along their entire length.
Once you put on the device:
• Put on the mask and make sure it is tightly secured on the face (see the specific instructions of the mask).
• Open the valve of the cylinder, at least three turns.
• Connect the demand valve to the mask connection: at first breath, the device (pos. 1 fig. 5) unlocks and keeps a positive pressure
under the mask.
Follow the following steps to connect the demand valve to the mask:
-Type A demand valve and mask, standardized EN 148-3 (M45x3) screw connection: screw the male swivel of the demand valve
into the female one of the mask until it stops.
-Type B/BN demand valve and mask, bayonet connection: insert the male connection of the demand valve into the coupling of the mask
and push until the demand valve 's teeth are hooked into the appropriate tightness edge of the mask.
Please note: The connection of demand valve to the facemask must be carried out and checked by a second person. The self-
contained breathing device is now ready for use.
3.3. When using
From time to time, check the residual pressure of the air reserve with the gauge. When the pressure drops below (55±5) bar, the
alarm signal is activated. A loud sound signal will thus appear with every inhalation of air. The signal will continue until the air
reserve has been entirely exhausted. This lasts until the complete exhaustion of the air supply. Please note: when the signal starts,
the user shall leave the contaminated area. In case of emergency (greater physical effort or increased breathing resistance), you
can briefly and repeatedly act on the rubber button of the demand valve to increase the flow of air into the mask.
3.4. After use
• Close the cylinder valve
Pag. 14 / 64
Publicité
