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747-400 MAINTENANCE MANUAL
(d) Center Tank Pumps
1) Left and right center tank pump symbology is presented for the center tank only. The following table represents the display logic for these fuel pumps.
~........................................................................ | LEFT AND RIGHT CENTER TANK PUMPS | .......................................................................... | PUMP | PUMP | FLOW | JETTISON | PUMP | SYMBOL | SYMBOL | | SWITCH | PRESS | TO ENGINES | FLOW | STATUS | DISPLAYED | COLOR | | IS ON | IS LOW | EXISTS | EXISTS | | | | .......................................................................... | YES | NO | YES | NO | ON-| PUMP ON-| GREEN | | | | | | FLOW | FLOW | | .......................................................................... | YES | NO | NO | NO | ON-| PUMP ON | GREEN | | | | | | PRESS | | | .......................................................................... | YES | NO | N/A | YES | ON-| PUMP ON- | MAGENTA| | | | | | FLOW | FLOW | | .......................................................................... | YES | YES | N/A | N/A | ON-LOW | PUMP ON | AMBER | | | | | | PRESS | | | .......................................................................... | NO | N A | N/A | N/A | OFF | PUMP OFF | WHITE | | | | | | | | | 2........…........…............…..........….........…...........…........1
C. EICAS ECS Synoptic Display (Fig.42)
(1) General
(a) The Environmental Control System (ECS) synoptic display presents graphic views and parameters for zone temperatures, outflow valve position, engine bleed status, APU isolation valve status, bleed isolation valve status, pack control switch status, engine/APU to pack bleed flow and duct pressure.
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747-400
MAINTENANCE MANUAL
ACTUAL TEMPERATURE (LARGE CHARACTER)
OUTFLOW VALVES
DUCT PRESSURE
ENGINE BLEED (OPEN)
NACELLE THERMAL ANTI-ICE (ACTIVE)
26 25 2526 2526 2526 2526
EICAS ECS Synoptic Display
Figure 42
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 指示/记录系统 2(74)
