DATE 02SEP90 GMT 18:54:04
EICAS ECS (Air Supply and Cabin Pressure System) Maintenance Display
Figure 52 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH PRE ú
31-61-00
IDS S/W P/N 685-2265-008 ú ú 27 Page 84T ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A02792
A
747-400
MAINTENANCE MANUAL
HIGH
PRESSURE
VALVE
HIGH
PRESSURE
PRESSURE
CONTROLLER
REGULATING
VALVE
ECS
ENGINE DUCT
PRESSURE AIR SUPPLY SYSTEM: PRECOOLER
1234 OUTLET
HIGH PRESS CONT OPEN OPEN OPEN OPEN TEMPERATURE
HIGH PRESS VLV OPEN OPEN OPEN OPEN
FAN AIR
PRESS REG VLV OPEN OPEN OPEN OPEN
VALVE
ENG DUCT PRESSURE 38 38 38 38
STARTER
VALVE PRECOOLER OUT TEMP 200 200 200 200
FAN AIR VLV CLOSED OPEN OPEN OPEN
REGULATING
PRESSURE
STARTER VLV CLOSED CLOSED CLOSED CLOSED
SHUTOFF VALVE
PRESS REG S/O VLV OPEN OPEN OPEN OPEN
MANIFOLD
LR
DUCT PRESSURE
MANIFOLD DUCT PRESSURE 38 38
CABIN RATE CABIN
CABIN PRESSURE SYSTEM:
ALTITUDE
CAB ALT 5000 RATE 125
CABIN DIFFERENTIAL
LDG ALT 3000AUTO ~P7.0
LANDING
PRESSURE ALTITUDE
CPC IN CONTROL A
OUTFLOW VALVES
CPC IN
LR
CONTROL
0.45 0.45
OUTFLOW
MAN AUTO
VALVES
DATE 02SEP90 GMT 18:54:04
EICAS ECS (Air Supply and Cabin Pressure System) Maintenance Display
Figure 52 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH ú
31-61-00
IDS S/W P/N 685-2265-008 ú ú 37 Page 84U ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
HIGH
PRESSURE
VALVE
HIGH
PRESSURE
PRESSURE
CONTROLLER
REGULATING
VALVE
ECS
ENGINE DUCT
PRESSURE
AIR SUPPLY SYSTEM:
PRECOOLER
1234
OUTLET
HIGH PRESS CONT OPEN OPEN OPEN OPEN
TEMPERATURE
HIGH PRESS VLV OPEN OPEN OPEN OPEN
FAN AIR
PRESS REG VLV OPEN OPEN OPEN OPEN
VALVE
ENG DUCT PRESSURE 38 38 38 38
STARTER
VALVE
PRECOOLER OUT TEMP 200 200 200 200
FAN AIR VLV CLOSED OPEN OPEN OPEN
REGULATING
PRESSURE
STARTER VLV CLOSED CLOSED CLOSED CLOSED
SHUTOFF VALVE
PRESS REG S/O VLV OPEN OPEN OPEN OPEN
MANIFOLD
LR
DUCT PRESSURE
MANIFOLD DUCT PRESSURE 38 38
OUTFLOW
CABIN PRESSURE SYSTEM:
CPC IN CONTROL
CPC IN CONTROL
OUTFLOW VALVES VALVES CABIN ALTITUDE
LR
CAB ALT 5000 RATE 125
0.45 0.45
LANDING ALTITUDE
LDG ALT 3000AUTO ~P 7.0
MAN AUTO
FWD CARGO OVBD VLV POS 0.50
FWD CARGO OVBD BACKUP VLV OPEN
DATE 02SEP90 GMT 18:54:04 CABIN RATE
CABIN DIFFERENTIAL PRESSURE
FREIGHTERS
EICAS ECS (Air Supply and Cabin Pressure System) Maintenance Display Figure 52 (Sheet 3)
E48038
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH POST ú
31-61-00
IDS S/W P/N 685-2265-009 ú ú 20 Page 84V ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(2)
(3)
(4)
(5)
(6)
(7)
(8)
A
747-400
MAINTENANCE MANUAL
(e)
Landing altitude and cabin pressure controller channel in control information is received by the EIU on an ARINC 429 data bus from the Cabin Pressure Control System (CPCS).
(f)
Outflow valves, high pressure controller, high pressure valve, pressure regulating valve, fan air valve, and starter valve position are received by the EIU as direct analog variable signals.
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