Pneumatcs AC Flashcards
Hp high light
Valve failed to close after close signal
Aircond light on cwp
Bleed valve
Fails in open position of lost elec power Auto closes Bleed air temp 288 in front of the valve 43.5 after the valve Duct temp 82 Acp compressor discharge 225
Bld close light
Confirmation bleed valve is closed
Bld fault light
Valve failed to close after close signal
Bleed air temp 288
Regulated pressure exceeds 43.5 psi
Cross valve
Only used on the ground
Required one bleed closed
Auto closes when both are open
Fails to close
L R bld air leak light
Temp 205
Engine nacelle to cross valve
Tail compartment air
Shutoff valve
Fully automated no control indication
Norm open
Closes, bleed valve closed, powered by utility bus fails to closed position
Hp bleed closes in auto
Temp 288 76 psi
Fire handle pull
Engine shutdown
Main dc bus looses power
Lp bleed fails
In open position
Left and right acp supplies
Left cabin
Right cabin and cockpit
L R recirc
When fan rpm is less than 80 percent
Acm overheat
After acm compressor 225 Duct over temp Closes bleed valve Illuminates aircond light
Duct overheat sensors
82
Duct ov temp master caution
Closes bleed valve
Aircond light
Vent fains powered by
L main bus
Avionics switch on
High pressure air
6 stage compressor air available with ng less than 80 per
Hp bleed valve. Closed auto reset
Min 10 psi.
Auto closes line 288 pressure more than 76
Fire handle pulled
Engine shutdown
Main dc bus looses power
