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The CPC automatically maintains a normal differential pressure limit of 9,3 psi. An overpressure limitation capsule, located in each outflow valve, controls the maximum cabin differential pressure at 9.6 psi.
Maximum cabin altitude limitation
An altitude limitation capsule contained in each outflow valve maintains the cabin
pressure altitude of 14,500 ft in case of depressurization due to:
-CPC failure,
-DUMP pushbutton activation,
-permanent cabin rate of climb in manual mode.
Negative differential pressure prevention
The negative pressure relief valve protects the structure from the effects of negative differential pressure (external pressure above cabin pressure). Only negative pressure relief valve can override the maximum cabin altitude limitation.
BAGGAGE COMPARTMENT PRESSURE RELIEF VALVES
Positive and negative pressure relief valves are installed in the baggage compartment.
If the heating valve fails to close when the BAG pushbutton is activated the positive pressure
relief valves limits the baggage compartment-to-cabin pressure differential at 0.07 psi.
When the baggage compartment is isolated, negative differential pressure during descent is
prevented by the negative pressure relief valves, which open when the baggage
compartment-to-cabin pressure differential reaches 0.28 psi.
NOSE CONE BULKHEAD PRESSURE RELIEF VALVE
A pressure relief valve in the nose cone bulkhead provides structural protection in case the calibrated holes provided for airflow evacuation are clogged. The relief valve is intended to operate when the difference between nose cone pressure and atmospheric pressure reaches 1.37 psi.
NORMAL OPERATION
In the following, typical in-flight situation has been selected to help the crew to understand the symbols provided in the various panels and displays.
OVERHEAD PANEL
ECS SYNOPTIC
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本文链接地址：DASSAULT FALCON 900EX EASY SYSTEMS SUMMARY Air Conditioning & Pressurization(16)
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