A320 jetBlue Lights & Switches Air Cond. Panel

Question 1

ENG 1 (2) BLEED pb

Answer 1

• Extinguished during normal operation. Bleed valves open if..
  1 ) Upstream pressure is above 8 psi
  2 ) APU BLEED pb is selected OFF or APU Bleed valve is closed
  3 ) There is no onside wing or pylon leak, and no overpressure or over temperature has been detected
  4 ) The ENG FIRE pb has not been activated
  5 ) The engine start valve is closed
• FAULT: Illuminate amber with ECAM caution if…
  1 ) There is an overpressure downstream of the bleed valves
  2 ) There is a bleed air overheat
  3 ) There is a wing or engine leak on the related side
  4 ) The bleed valve is not closed during engine start
  5 ) The bleed valve is not closed with APU bleed ON
• FAULT will extinguish when the END BLEED pb is selected OFF and the fault has disappeared
• OFF: (white) The bleed pb and HP valves are closed

Question 2

RAM AIR pb guarded

Answer 2

• The RAM air inlet is closed when extinguished
• ON: (white) The RAM air inlet is selected OPEN if…
  1 ) The DITCHING pb on the CABIN PRESS panel is in the normal extinguished guarded position
  2 ) Cabin differential pressure is less than 1 psi

Question 3

APU BLEED pb

Answer 3

• When extnguished, the APU BLEED valve is closed
• FAULT: Illuminates amber with an ECAM caution if an APU leak is detected
• ON: (blue) The APU bleed valve is selected OPEN

Question 4

X BLEED selector knob

Answer 4

• SHUT: The crossbleed valve is closed
• AUTO: The crossbleed valve is open if the APU Bleed valve is open, the crossbleed valve is closed if the APU Bleed valve is closed
• OPEN: The crossbleed valve is open

Question 5

PACK 1 (2) pb

Answer 5

• When the pb is extinguished the pack flow control is automatic
• FAULT: Illuminates amber with an ECAM caution when…
  1 ) The pack control valve position disagrees with the selected position, or…
  2 ) Compressor outlet overheats, or
  3 ) Pack outlet overheats
• OFF: (white) The pack control valve closes

Question 6

HOT AIR pb

Answer 6

• When pb is extinguished, the valve operates hot air pressure automatically to help regulate selected temeratures
• FAULT: Illuminated amber with ECAM caution when a duct overheat is detected. The valve and trim air valves close automatically
• OFF: (white) The valve and the trim air valves close. The FAULT circuit is reset.

Question 7

ZONE TEMPERATURE selectors

Answer 7

• Regulates temperatures between 64ºF and 86ºF depending on position

Question 8

PACK FLOW selector

Answer 8

• NORM: Flow is controlled automatically. Depending on passenger loading and ambient conditions, it can be selected LOW or HIGH. High flow is provided with APU bleed or single pack operation regardless of switch position