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MIXING
MANIFOLD
RECIRC
FILTER
RECIRC FAN
NO.1
AFT PRESSURE
BULKHEAD
UNDER FLOOR AREA
RECIRC
FILTER
RECIRC FAN
NO.2
OUTLET GRILL
ACSC 2
AFT BAGGAGE BAY
CB2--C2
CBP--1
BAGGAGE BAY
HEATER
BAGGAGE BAY
EXHAUST SOV
BAGGAGE BAY
CONDITIONED--AIR SOV
INLET GRILL
BAGGAGE BAY
TEMPERATURE
SENSOR
E
T
E
FIDEX
POSITION
POSITION
RIGHT
PACK
LEFT
PACK
Vol. 1 08--40--3
ENVIRONMENTAL CONTROL SYSTEM
Aft Cargo Bay Ventilation System REV 2, Feb 24/04
Flight Crew Operating Manual
CSP C--013--067
AFT Cargo Bay EICAS Indication <1001,1201>
Figure 08---40---2
Vol. 1 08--40--4
ENVIRONMENTAL CONTROL SYSTEM
Aft Cargo Bay Ventilation System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Aft Cargo Bay
Ventilation
Controller BAGG COMPT
CONT DC BUS 1 1 D8
System Heater BAGG COMPT
HEATER AC BUS 1 1 C2
Vol. 1 08--50--1
ENVIRONMENTAL CONTROL SYSTEM
Lavatory and Galley Ventilation System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
1. LAVATORY AND GALLEY VENTILATION SYSTEM
Lavatory and galley ventilation is provided by exhaust fans. The fans run whenever aircraft
AC power is available. Each fan has an overheat thermal switch which shuts down the fan
when the fan motor overheats.
The galley air supply line is fitted with a 1000 watt heater to provide supplementary heat to
the galley and service door area. The heater is controlled by a HEATER switchlight on the
galley control panel. The heater incorporates an internal, self--resetting, exhaust air
temperature switch that removes power to the heater when the heater outlet temperature
becomes excessive. The heater also incorporates an internal, overheat protection switch
which disables the heater when the internal temperature exceeds a preset limit.
Effectivity:
S Airplanes incorporating Service Bulliten SB 670BA--21--013:
The galley air supply line heater is reduced to 500 watts power.
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Heater
GALLEY
HEATER
CONT
DC BUS 2 F11
Galley
Ventilation
GALLEY
HEATER 2 B11
Fan
GALLEY
EXHAUST
FAN
AC BUS 2
B8
Lavatory
Ventilation
LAV EXHAUST
FAN AC BUS 1 1 B8
Vol. 1 08--50--2
ENVIRONMENTAL CONTROL SYSTEM
Lavatory and Galley Ventilation System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 08--60--1
ENVIRONMENTAL CONTROL SYSTEM
Pressurization System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
1. PRESSURIZATION SYSTEM
The aircraft is pressurized by bleed air supplied by the air-conditioning system.
Pressurization is controlled by opening and closing a single electrically controlled outflow
valve to regulate the internal cabin pressure. The outflow valve is controlled by either, of two
independent cabin pressure controllers, in automatic mode or by controls on the cabin
pressurization control panel in manual mode. When the aircraft is on the ground, differential
pressure is limited by a ground valve. Two safety valves provide overpressure and negative
pressure relief. If cabin altitude exceeds 14,000 feet, a signal is sent to the passenger
oxygen system to deploy the oxygen masks.
Vol. 1 08--60--2
ENVIRONMENTAL CONTROL SYSTEM
Pressurization System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Pressurization System --- General
Figure 08---60---1
AUTO 2
CABIN
PRESSURE
CONTROLLER 1
CABIN
PRESSURE
CONTROLLER 2
OXYGEN
MASK
SIGNAL
WOW SIGNAL
SAFETY VALVE 2
GROUND
VALVE
OUTFLOW
VALVE
AUTO 1
MAN
SAFETY VALVE 1
LANDING
ELEVATION
SELECTION
EMERGENCY
DEPRESS
AUTO
/ MAN
LANDING
ELEVATION
SELECTION
EMERGENCY
DEPRESS
AUTO
/ MAN
OUTSIDE
STATIC
PRESSURE
OUTSIDE
STATIC
PRESSURE
OPEN / NOT OPEN
OPEN / NOT OPEN
OPEN / CLOSED
COMMAND
COMMAND
OPEN / CLOSED
DISABLE
DISABLE
CABIN
PRESSURE
CABIN
PRESSURE
CABIN
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