Air Conditioning Panel

Question 1

ENG 1(2) BLEED valves open if?

Answer 1

Start UP APU WOOF

Start valve (engine) is closed
UP-stream pressure sufficient
APU bleed valve closed.
Wing or pylon leak
Over-temperature
Overpressure
FIRE pb (engine) not pushed.

Question 2

ENG 1 or 2 BLEED FAULT?

w/ ECAM fault

Answer 2

Start (UP)APU’s WOO(F)

Start valve (engine) not closed
APU bleed ON (apu valve not closed)
Wing or engine bleed leak
Over-temp 
Over-pressure downstream 

FAULT will reset w/ ENG BLEED pb is selected OFF and no more fault.

Question 3

“RAM AIR” (black wire guarded pb) will open the ram air valve if……?

Answer 3

• less than 1psi cabin differential

- ditching pb is not pushed

Question 3

APU BLEED pb ON (blue) means the valve is open

and the Amber fault light indicates what?

Answer 3

bleed leak.

Question 4

What does the Pack FAULT represent?

Answer 4

• Valve position disagree (Pack flow control valve)
• Compressor outlet overheat
• Pack outlet overheat.

Question 5

What is the auto detent on the X BLEED knob?

Answer 5

XBleed valve open = APU bleed valve open.

Closed if closed.

Question 7

HOT AIR pb FAULT meaning?

Answer 7

a duct overheat. Valve and trim air valves close automatically.

Question 7

PACK FLOW selector knob has three positions:

              NORM
        LO             HIGH

When is high flow automatic?

Answer 7

APU bleed or single pack operation regardless of switch position.

Question 9

What does the “low” setting do on the pack flow knob?

Answer 9

Reduce pack output to 80%

Question 10

When is the pack flow control switch set to low?

Answer 10

If # of Customers is below:

140 (320 and Mint)
168 (321)

A320 has 150/162 config.
A321 has 159/220 seats.