飞行翻译_公务机_公务航空_Business Jet_Business Aviation

Bleed Leak Detection (Cont’d)
When a leak is detected, a message is displayed on EICAS and the BMC will automatically close the affected PRV, the CBV and wing anti-ice pressure regulating shut-off valve (WAIV), to isolate and stop the leak.

WAIV

PRV
GF0210_014
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2

AIR CONDITIONING AND PRESSURIZATION
 
Controls are provided on the Air Conditioning Control Panel, located on the overhead panel.
TEMPERATURE Selectors
Used to select desired temperature for the cockpit and cabin.

RECIRC Switch
Used to inhibit
recirculation of
conditioned air.

. Indicates
recirculation has
been selected off.

Used to provide ambient air to ventilate the cockpit and cabin, in the event of dual PACK failure.

RAM AIR Switch
TRIM AIR Switch

. Ram air vent Used to inhibit trim
valve has been air.
selected open. . Indicates trim air is selected off.

AUX PRESS Switch
Used to control alternate air source,
HOT/COLD Toggle
through the trim air
Switches
system, for cabinUsed to control pressurization.
PACK outlet

. AUX PRESStemperature in has been selected on.
manual mode.
PACK CONTROL SelectorL (R) PACK Switches
Used to enable Air Conditioning SystemUsed to inhibit the air conditioning units

Controllers (ACSC) which measure, calculate
. Indicates a PACK failure.

and control the airflow and all auto features.
. PACK has been selected off.

NORM . Automatic flow control.

LO . Pack operates in low flow mode.

HIGH . Pack operates in high flow mode.

MAN. Flow control valve is driven full open  (ACSC is disabled).
GF0210_015
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005

The air conditioning system is comprised of flow control valves, air conditioning units, a ram air
system, distribution system, ventilation system and auxiliary pressurization system.

The flow control system regulates airflow from the pneumatic duct to the air conditioning units.
The ACUs decrease the temperature and moisture content of the bleed air from the pneumatic
system. The ACUs are located in the aft equipment bay.

An alternate supply of fresh air is available via the ram air system.
Conditioned air is routed from the cooling packs to the mix manifold (distribution system).
The Avionics and Cockpit Display Exhaust system ensures the ventilation of the avionic equipment

and cockpit displays to prevent excessive heating.
The auxiliary pressurization system provides an alternate pressurization source for the cabin, in the
event of loss of both cooling packs.