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CLOSE : X-bleed valve is closed.
OVERHEAD PANEL
Applicable to: ,
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
PNEUMATIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-36-20 P 3/10
FCOM 19 AUG 10
(1) ENG 1 (2) BLEED pb sw
On : The bleed valve opens, provided :
‐ Upstream pressure is above 8 PSI.
‐ The APU BLEED pushbutton is OFF, or the APU bleed valve is closed.
‐ There is no onside wing or pylon leak, overpressure or overtemperature
detected.
‐ The ENG FIRE pushbutton is not released out.
‐ The ENG start valve is closed.
FAULT lt : Comes on, along with an associated ECAM caution, in case the :
‐ Bleed valve is not closed during engine start.
‐ Bleed valve is not closed with APU bleed ON (and for RH engine crossbleed
open).
and additionally associated with autoclosure of the bleed and HP valves :
‐ Overpressure downstream of the bleed valve.
‐ Bleed overheat
‐ Wing or engine leak on the related side.
It goes off, when the ENG BLEED pushbutton is OFF, provided the failure has
disappeared.
OFF : The Bleed valve and HP valve close. The OFF light comes on white. The FAULT
light and the autoclosure signal are reset.
(2) APU BLEED pb sw
ON : APU valve opens provided :
‐ N > 95 %
‐ Altitude < 25 000 ft climbing
or < 23 000 ft descending
‐ No leak detected on APU or LH bleed (Should a leak occur on the RH side, the
X-bleed would close).
ON light illuminates blue.
Off : APU valves closes.
FAULT lt : illuminates amber, associated with ECAM caution, when APU leak is detected.
(3) X-BLEED sel
AUTO : X-bleed valve is open if APU bleed valve is open
X-bleed valve is closed if APU bleed valve is closed.
OPEN : X-bleed valve is open.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
PNEUMATIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-36-20 P 4/10
FCOM 19 AUG 10
CLOSE : X-bleed valve is closed.
ECAM BLEED PAGE
Applicable to:
(1) HP VALVES
Crossline - Green : The HP valve is fully closed.
In line - Green : The HP valve is not fully closed.
Crossline - Amber : HP valve disagree in the closed position, or when the HP valve is
fully closed and the respective engine is not running.
(2) ENGINE BLEED VALVES
In line - Green : The bleed valve is normally open.
Crossline - Green : The bleed valve is fully closed (by manual or automatic control).
In line - Amber : The bleed valve disagrees in the open position,
Crossline - Amber : The bleed valve disagrees in the closed position, or the bleed valve
is fully closed and the respective engine is not running.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
PNEUMATIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-36-20 P 5/10
FCOM 19 AUG 10
Note: In certain circumstances (such as different engine setting, or minor bleed valve
regulation drift), it is possible that one bleed valve on one side closes and will be
indicated closed and green on the ECAM BLEED page. There is no operational
impact on the bleed system, provided there is no associated “AIR ENG X BLEED
FAULT” ECAM warning.
(3) ENGINE BLEED INDICATIONS
(A) Precooler inlet pressure
It is normally in green.
It becomes amber, if lower than 4 PSI, or in case the BMC detects an overpressure
(above 60 PSI).
(B) Precooler outlet temperature
It is normally in green.
It becomes amber, if the BMC detects an overheat or low temperature.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
PNEUMATIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-36-20 P 6/10
FCOM 19 AUG 10
Overheat : Temperature exceeds :
‐ 290 °C for more than 5 s, or
‐ 270 °C for more than 15 s, or
‐ 257 °C for more than 55 s.
Low temperature is detected, if the bleed temperature drops below 150 °C, and if wing
anti-ice is on. Low temperature may, however, only be due to low outside air temperature.
(4) APU BLEED VALVE
Displayed only if the APU MASTER SW is ON.
Crossline - Green : APU valve not fully open and APU BLEED pushbutton is OFF
Crossline - Amber : APU bleed valve is not fully open and APU BLEED pushbutton is
ON.
In line - Green : APU valve fully open
(5) CROSS BLEED VALVE
Crossline - Green : crossbleed valve is normally closed.
In line - Green : crossbleed valve is normally open.
Crossline - Amber : crossbleed valve disagrees in closed position.
In line - Amber : crossbleed valve disagrees in open position.
In transit - Amber : crossbleed valve in transit
(6) GND HP ground connection indication
　
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