Ventilation

Question 2

The ventilation system includes ventilation for…

Answer 2

The avionics (controlled be the avionics equipment ventilation controller), the battery, the lavatories and galleys.

Question 3

How does the smoke configuration work?

Answer 3

When the smoke detector detects smoke in the avionics ventilation air the BLOWER and EXTRACT FAULT lights come on. When both the BLOWER and the EXTRACT pushbuttons are set to OVRD position the ai conditioning system supplies cooling air which is then exhausted overboard. The blower fan stops.

Question 4

What are the main components of the avionic ground cooling?

Answer 4

1 inlet valve, 1 ground cool fan, 1 cooling unit, 1 outlet valve and one controller.

Question 5

With the BLOWER and EXTRACT pb switches in AUTO what ventilation configuration do you normally expect to see?

Answer 5

Open configuration on the ground before applying T/O power and closed configuration after applying T/O power in the air.

Question 6

How does the battery ventilation work?

Answer 6

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.

Question 7

On which ECAM page you will get information about the ventilation system?

Answer 7

PRESS page.

Question 8

With the BLOWER and EXTRACT pb switches in OVRD what happens to the ventilation system?

Answer 8

The system goes into the smoke configuration and the blower fan stops.

Question 9

When does the avionic ventilation in the open-circuit configuration operate on the ground?

Answer 9

The open-circuit configuration operates when the skin temperature is above the on-ground threshold: +12°C (53°F) temperature increasing or +9°C (48°F) temperature decreasing.

Question 10

What is the purpose of the avionic ventilation?

Answer 10

The avionic ventilation system is fully automatic. It cools the electrical and electronic components in the avionic compartment and on the flight deck including the instrument and circuit breaker panels.

Question 11

During ground function operation the outflow valve is…

Answer 11

Fully open.

Question 12

What are the main components of the avionic ventilation?

Answer 12

Fans skin air inlet and extract valves skin exchange inlet and outlet bypass valves airconditioning inlet valve skin exchange isolation valve and Avionics Equipment Ventilation Computer (AEVC).

Question 13

When does the Lav/Galley extract fan operate?

Answer 13

Continuously when electrical power is available

Question 14

What does an amber “FAULT” light on the BLOWER pushbutton indicate?

Answer 14

• SMOKE warning is activated
• Computer power supply failure
• Low Blower pressure
• Duct Overheat

Question 15

What does an amber “FAULT” light on the EXTRACT pushbutton indicate?

Answer 15

• SMOKE Warning is activated
• Computer power supply failure
• Low Extract Pressure

Question 16

With 2 FAULT lights on the VENTILATION panel, are there any other indications?

Answer 16

Yes, the SMOKE light in the GEN 1 LINE pushbutton

Question 17

What is the RAM AIR pushbutton used for?

Answer 17

• Smoke removal in cabin

- Ventilation of cabin with a dual pack failure

Question 18

Will there be any other indications?

Answer 18

ECAM warning and amber “FAULT” lights in the EXTRACT and BLOWER pushbuttons on the VENTILATION panel

Question 19

With BLOWER and EXTRACT pushbuttons in AUTO how does the system operate?

Answer 19

• Ground: system is normally in the OPEN configuration
• Flight: system is normally in the CLOSED configuration
• Intermediate: Closed configuration except small internal flap in Extract Valve is open.

Question 20

With both BLOWER and EXTRACT pushbuttons in OVRD (smoke configuration) what are teh positions fo the INLET and EXTRACT valves?

Answer 20

• INLET valve closed

- EXTRACT valve OPEN

Question 21

With a CARGO SMOKE warning what happens to the Isolation Valve and Extract Fans?

Answer 21

• Isolation Valve closes

- Extract Fans stop

Question 22

What does the CARGO HEAT AFT ISOL VALVE amber “FAULT” light indicate?

Answer 22

Valve disagreement of inlet or outlet valve

Question 23

What is the purpose of the CABIN FANS?

Answer 23

To re-circulate cabin air to the mixing chamber and then back to the cabin

Question 24

What does the CARGO HEAT HOT AIR amber “FAULT” light indicate?

Answer 24

Duct Overheat