(b)
A direct-reading pressure gage which gives an indication of the cylinder high-pressure, independent of the open or closed position of the manual valve.
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Oxygen Storage Cylinder
Figure 001
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Feb 01/98
CES
(c) A high-pressure safety outlet with a discharge indicator. The discharge indicator is a frangible disc that ruptures at a pressure of 172.5 to 191.5 bar (2500 to 2775 psig). The oxygen is discharged overboard.
B. Pressure Regulator/Transmitter
(Ref. Fig. 002)
(1)
The pressure regulator/transmitter is directly connected to the cylinder. The inlet connection of the pressure regulator/transmitter limits the high-pressure from the oxygen cylinder to the pressure regulator/transmitter.
(2)
The high-pressure stage of the pressure regulator/transmitter has an integrated transducer installed. This sends an electrical signal of the oxygen pressure to the ECAM system in the cockpit.
(3)
The low-pressure stage of the pressure regulator/transmitter supplies a pressure of 4.48 to 6.48 bar (65 to 94 psig) to the oxygen distribution system. This pressure supplies an oxygen flow rate of 0 to 300 l/min (0 to 10.6 cubic feet/min) (NTPD) and at an oxygen cylinder pressure of 6.9 to 140 bar (100 to 2030 psig).
(4)
The low-pressure safety outlet has an integrated relief valve. This limits the low-pressure oxygen supply to a maximum of 12 bar (175 psig). The oxygen released by the low-pressure safety outlet is discharged overboard by a safety system.
C. Safety System The high-pressure safety outlet on the oxygen cylinder head and the low pressure safety outlet on the pressure regulator/transmitter are connected to a discharge indicator on the fuselage skin (near the access door 812). The discharge indicator is a green blow-out disc that can be seen from outside the aircraft. This disc will blow out at a pressure of
2.8 to 6.9 bar (40 to 100 psig) to show a yellow indicator. This shows that oxygen has been discharged.
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
D. Replenishment of the Oxygen Source (Ref. Fig. 003) The oxygen source is replenished by replacing the oxygen cylinder.
(1)
Not Applicable
(2)
Not Applicable
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Pressure Regulator/Transmitter Figure 002
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External Filling Connection - Schematic
Figure 003
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R (3) Not Applicable
R (4) Not Applicable
R (5) Not Applicable
R **ON A/C 051-099,
R D. External Filling Connection
R (Ref. Fig. 003)
R The external filling connection is installed in the aircraft between
R frames 11 and 13. It permits filling of the oxygen cylinder without
R removal of the cylinder from the aircraft. The external filling
R connection is made of the components below:
R (1) A filling connector with a filter. The filter prevents entrance of
R any moisture or dust into the oxygen system.
R (2) A filling connector cap with a relief valve. The relief valve
R releases any oxygen pressure of more than 6.9 bar (100 psig) if there
R is a leak in the check valve of the pressure regulator/transmitter.
R (3) A flexible hose connects the filling connection to the pressure
R regulator/transmitter.
R (4) A pressure gage to indicate the pressure inside the oxygen cylinder
R during filling. The pressure gage has a two-color scale with
R graduations: 0 to 5.9 bar (0 to 85 psig)is red, 5.9 to 138 bar (85 to
R 2000 psig) is green.
R (5) The operating pressure is 0 to 140 bar (0 to 2030 psig). The filling
R rate is 0 to 500 l/min (0 to 17.65 (cubic feet)/min) (NTPD).
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May 01/05
CYLINDER - OXYGEN STORAGE (5750HM) - REMOVAL/INSTALLATION
_________________________________________________________
TASK 35-11-41-000-001 Removal of the Crew Oxygen-Storage Cylinder (5750HM) WARNING : KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE
_______ OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.
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