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AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - AVIONICS VENTILATION
A318/A319/A320/A321 FLEET DSC-21-30-20 P 7/8
FCOM 19 AUG 10
When the EXTRACT pushbutton switch is set at OVRD, the extract fan is controlled directly from
the pushbutton. Both fans continue to run.
SMOKE CONFIGURATION
When the smoke detector detects smoke in the avionics ventilation air the BLOWER and the
EXTRACT FAULT lights come on.
When both the BLOWER and the EXTRACT pushbuttons are set to the OVRD position, the air
conditioning system supplies cooling air, which is then exhausted overboard. The blower fan
stops.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - AVIONICS VENTILATION
A318/A319/A320/A321 FLEET DSC-21-30-20 P 8/8
FCOM 19 AUG 10
CONTROLLER FAILURE
The system goes to the same configuration as above, except that the skin exchange isolation
valve stays open.
The inlet valve and the skin exchange inlet bypass valve remain in the position they were in before
the failure occurred.
The extract fan keeps running.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - BATTERY VENTILATION
A318/A319/A320/A321 FLEET DSC-21-30-40 P 1/2
FCOM 19 AUG 10
BATTERY VENTILATION
Applicable to: ALL
A venturi in the skin of the aircraft draws air from the space around the batteries and vents it
overboard. The resulting airflow ventilates the batteries.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - BATTERY VENTILATION
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-21-30-40 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - LAVATORY AND GALLEY VENTILATION
A318/A319/A320/A321 FLEET DSC-21-30-50 P 1/2
FCOM 19 AUG 10
LAVATORY AND GALLEY
Applicable to: ALL
An extraction fan draws ambient cabin air through the lavatories and galleys and exhausts it near the
outflow valve.
The extraction fan runs continually when electric power is available.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - LAVATORY AND GALLEY VENTILATION
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-21-30-50 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-21-30-60 P 1/6
FCOM 19 AUG 10
OVERHEAD PANEL
Applicable to: ALL
(1) BLOWER and EXTRACT pb sw
AUTO : When both pushbutton switches are on AUTO :
On the ground before the application of TO ‐ power, the ventilation system is in
open circuit configuration (closed configuration when the skin temperature is
below the ground threshold).
‐ On the ground after the application of TO power, and in flight, the ventilation
system is in closed circuit configuration.
OVRD : When either pushbutton switch is on OVRD :
‐ The system goes to closed circuit configuration.
‐ Air from the air conditioning system is added to ventilation air. (The blower fan
stops if the BLOWER pushbutton switch is in the OVRD position).
When both pushbutton switches are on OVRD :
‐ Air flows from the air conditioning system and then overboard.
‐ The extract fan continues to run.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-21-30-60 P 2/6
FCOM 19 AUG 10
FAULT lt : Lights up amber (and ECAM activates)
in the blower switch, if : ‐ blowing pressure is low (See *)
‐ duct overheats (See *)
‐ computer power supply fails
‐ smoke warning is activated
in the extract switch, if : ‐ extract pressure is low (See *)
‐ computer power supply fails
‐ smoke warning is activated.
* If the warning occurs on the ground when the engines are stopped, the
external horn sounds.
ECAM CAB PRESS PAGE
Applicable to:
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
VENTILATION - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-21-30-60 P 3/6
　
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