Air conditionning

Question 1

Cooling of air:

Answer 1

– by two ground turbo fans:
• IAS ≤ 150 kt and ldg gear is retracted for less than 10 min
• IAS ≤ 150 kt and ldg gear is extended.
– by ram air when IAS >150 kt

Question 2

RECIRC FAN

Answer 2

Assists pack air flow

Question 3

RECIRC FAN - FAULT

Answer 3

Fan low speed or motor overheat + AIR on CAP. No auto disconnect

Question 4

COMPT INDICATOR

Answer 4

Duct temperature limited to
88°C. (191°F) by pneumatic
temp.limiter

Question 5

TEMP SEL

Answer 5

AUTO: the temperature is closed by the electronic temperature controller, taking
into account:
– duct temperature
– zone temperature demand selector
– associated compartment temperature
– aircraft skin temperature

Question 6

TEMP SEL - OVHT

Answer 6

Duct overheat > 92 °C + AIR on CAP. Pack valve will not auto close

Question 7

MAN

Answer 7

Compt temp knob controls directly temp control valve

Question 8

FLOW

Answer 8

NORM: 22 psi (pack valves)
HIGH: 30 psi (pack valves)