Air Conditioning Flashcards
Cabin compartment temp controllers can be set to what range of temperatures?
18 to 30
How are the zone temps individually controlled?
trim air valves
What’s the name of the computer that controls the packs?
pack controller
What computer controls the trim air valves?
zone controller
When is pack flow automatically set to high?
When using a single pack, or using APU
What happens to the pack during engine start?
Pack flow control valves close
What happens if zone controller has a dual channel failure?
The packs deliver fixed output temp of 20 degrees
What happens when the ram air pushbutton is selected ON?
emergency ram air inlet is opened and outflow valve opens 50%
What’s the limitation on the opening of the emergency ram air valve?
If pressure difference is greater than 1 psi, no ram air flows in
Air Con - What happens if a duct overheat occurs?
the hot air valve closes
