曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
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(~ PACK pb
On The pack flow control valve is automatically controlled~
It opens, except in the following cases :
- Upstream pressure below minimum ;
- Compressor outlet overheat ;
- Engine start sequence :
1. If the crossbleed valve is closed, the valve located on the starting
engine side immediately closes, when the MODE selector is set to IGN
(or CRK).
2. It remains closed on the starting engine side (provided the crossbleed
valve is closed) when :
~ The MASTER switch is set to ON (or the MAN START pushbutton is
set to ON), and
~ The start valve is open, and
~ N2 < 50 %.
~
Note ~ If the crossbleed valve is open at engine start, both pack flow
control valves close.
3. On ground, reopening of the valves is delayed for 30 seconds to avoid
a supplementary pack closure cycle during second engine start.
- The fire pushbutton, of the engine on the related side, is pressed,
- Ditching is selected~
OFF The pack flow control valve closes~
FAULT It Comes on amber, and a caution appears on the ECAM, if the pack flow
control valve position disagrees with the selected position, or in the case of
compressor outlet overheat or pack outlet overheat~
PACK FLOW se
Permits the selection of pack valve flow, according to the number of passengers and
ambient conditions (smoke removal, hot or wet conditions)~
LO (80 %)- NORM (100 %) - HI (120 %).
Manual selection is irrelevant in single pack operation, or with APU bleed supply~ In
these cases, HI is automatically selected~
If LO is selected, the pack flow can be automatically selected up to 100 % when the
cooling demand cannot be satisfied~
CCM ALL
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┃ ┃ ┃1.21.10 P 12 ┃
┃ ┃ ┣━━━━━┳━━━━━┫
┃I ~___~-~ A318 ┃I AIR CAIR/CONDITIONING ┃SEQ 001 1 ┃I REV 33 ┃
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本文链接地址：
AIRBUS A320 Flight Crew Operating Manual1(96)
