Air Conditioning Flashcards
1
Q
- What controls pack discharge air temperature and prevents ice accumulation inside pack by monitoring compressor inlet and outlet temperature?
A
Air Conditioning Controllers (ACCs)
2
Q
- What pack outlet temperature would you expect with packs operating normally?
A
35°F
3
Q
- What do temperature control rheostats control?
A
They control trim air valves that control mixing of hot air from hot air manifold with cold air from cold air manifold to produce comfortable air.
4
Q
- How can you select ram air?
A
Select Ram Air or turn both Pack switches to Off.
5
Q
- When does ram air check valve allow air into the cabin?
A
When inside pressure < outside pressure
6
Q
- What’s the purpose of ozone filters?
A
They change bleed air ozone to oxygen to enhance pax comfort.
7
Q
- What’s the temperature select range in automatic mode?
A
60 to 90°F or 16 to 32°C
8
Q
- How is temperature controlled in manual mode?
A
Sliders are used to control trim air valve position from 0 to 100%.
9
Q
- What type of air comes from overhead gaspers and baseboards?
A
Cold air always comes from overhead gaspers in both cockpit and cabin while conditioned air comes from baseboards or foot level outlets.
