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PRESSURIZATION - FUNCTIONAL TEST OF MAN MOTOR
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21 - AIR CONDITIONING
21-20-00 GENERAL VENTILATION -
SYSTEM DESIGN PHILOSOPHY
CONTENTS:
Avionics
Lav & Galleys
Cargo (Option)
Controllers
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GENERAL VENTILATION - SYSTEM DESIGN PHILOSOPHY
AVIONICS
The avionics ventilation system ensures a proper
ventilation of the electrical equipment. Air is taken
from different sources depending on the aircraft
configuration and ambient conditions.
Ventilation air is blown to the equipments by a blower
fan and extracted by an extraction fan.
LAV & GALLEYS
The lavatory and galleys ventilation system is used
to remove unpleasant odors before they enter the cabin.
Ventilation air is supplied from cabin distribution
ducts and discharged overboard by an extraction fan.
CARGO (Option)
The FWD & AFT cargo compartments are ventilated by
cabin ambient air coming from the cabin zones through
openings in the cabin floor behind the sidewall panels.
The FWD & AFT cargo compartments are ventilated by
means of an extraction fan or by differential pressure.
Note that the ventilation system is optional and
independent for each compartment.
CONTROLLERS
The avionics equipment ventilation computer (A.E.V.C)
ensures control and monitoring of the avionics
ventilation system.
The cargo ventilation controller controls and
monitors the isolation valves and the extraction
fan of the cargo ventilation system.
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GENERAL VENTILATION - SYSTEM DESIGN PHILOSOPHY
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SELF EXAMINATION
Where does the LAV and GALLEYS ventilation air
come from ?
A - From cabin distribution ducts.
B - From pack 1.
C - From pack 2.
What is the purpose of the Avionics Equipment
Ventilation Computer ?
A - To ensure control and monitoring of the
avionics ventilation system.
B - To control and monitor the cargo
ventilation components.
C - To control and monitor the packs.
What is the purpose of the avionics ventilation
system in the avionics bay ?
A - To ventilate the avionics equipment.
B - To ensure the heating of the avionics
bay.
C - To avoid avionics bay structural damage.
How is the FWD cargo compartment ventilated ?
A - With avionics bay ambient air.
B - With air coming directly from the pack
outlet.
C - With cabin ambient air.
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21 - AIR CONDITIONING
21-26-00 AVIONICS VENTILATION -
SYSTEM CONTROLS AND INDICATING
CONTENTS:
Blower Pushbutton
Extract Pushbutton
Skin Air Inlet Valve
Vent Indication
Skin Air Outlet Valve (extract Valve)
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AVIONICS VENTILATION - SYSTEM CONTROLS AND INDICATING
The avionics ventilation system is automatically
controlled by the Avionics Equipment Ventilation
　
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