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┃  .,,,.8, ,, ~L,~ A319          ┃                            ┃          ┃          ┃
┃ Lli,~ A320                     ┃                            ┃          ┃          ┃
┃      A~7-~'M" A321             ┃                            ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                            ┃          ┃          ┃
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Air from the APU load compressor is available on ground and in flight.
The APU bleed valve operates as a shut-off valve to control APU bleed air. It is
electrically-controlled and operated by fuel pressure.
The APU BLEED pushbutton, on the AIR COND panel, controls the APU bleed valve.
When the flight crew selects ON with the pushbutton, APU bleed air supplies the
pneumatic system, if the APU speed is above 95 %. This opens the crossbleed valve and
closes the engine bleed automatically.
A check valve near the crossbleed duct protects the APU, when bleed air comes from
another source.
APU BLEED VALVE OPENING LOGIC
Note : I. Leak detection is disregarded during an engine start.
       2. APU leak detection is lost, if BMC I is lost.
CCM ALL
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┃I  ~-~ A318                     ┃PNEUMATIC   ┃1.36.10     P 7   ┃
┃ aw aw ,, ~L,~ .4319            ┃            ┃                  ┃
┃ Lli,~ A320                     ┃            ┃                  ┃
┃                                ┃            ┣━━━━┳━━━━┫
┃      A~7-~'M" .4321            ┃DESCRIPTION ┃SEQ 001 ┃REV 23  ┃
┃   FLIGHT CREW OPERATING MANUAL ┃            ┃        ┃        ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━┻━━━━┻━━━━┛
A crossbleed valve on the crossbleed duct allows the air supply systems of the two
engines to be isolated or interconnected.
A rotary selector on the AIR COND panel controls the crossbleed valve electrically.
Two electric motors, one for automatic mode and one for manual mode, control the valve.
In automatic mode the crossbleed valve opens when the system is using APU bleed air. It
closes if the system detects an air leak (except during engine start).
X-BLEED VALVE CONTROL LOGIC
ECAM INDICATION
X BLEED VALVE
X-BLEED VALVE OPEN-AIR SUPPLIED FROM APU
CCM ALL
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┃                                ┃                            ┃1.36.10     P 8       ┃
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual5(96)