(2)
If the door-mounted escape system does not inflate automatically, you can pull the manual inflation handle on the the girt to inflate.
3. No. 3 Emergency Exit Door Escape System (Fig. 7)
_______________________________________
A. Escape System (Fig. 7)
(1)
The door-mounted escape system contains a slide that inflates. The slide is folded into a pack which also contains the inflation cylinder and inflation hoses to inflate the system.
(2)
The escape slide is mounted in a slide compartment on the door. A cover on the interior protects the escape slide pack.
(3)
The cover is hinged at the top to let the pack deploy. The cover has a window to see the pressure gage on the inflation cylinder.
B. Restraint System
(1) The slide is folded and attached to the packboard to make the pack. The pack is held in by two brackets in the bottom of the slide compartment. The slide pack attaches to the door with four bolts.
C. Release System
(1) The escape system deploys when the door is opened from the inside or outside.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-66-00
ALL ú ú 08 Page 5 ú Dec 20/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
INFLATION CYLINDER
TO GIRT
INFLATION CABLE
ASPIRATOR (2 LOCATIONS)
DEFLATE VALVE
(2 LOCATIONS)
PRESSURE RELIEF VALVE
(2 LOCATIONS)
ESCAPE SLIDE
Escape Slide Inflation System
Figure 4
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-66-00
ALL ú ú 03 Page 6 ú Jun 20/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(2) The girt connects the escape slide to the girt bar. The girt bar is installed through the loop in the girt and attached to the floor fittings. The girt pulls to release the latch at the bottom of the slide compartment cover. The release cables from the pack attach to the girt. The release cables pull to release the cover as the emergency exit door rotates open.
D. Inflation System
(1)
The escape slide is automatically inflated when the pack is released. As the door rotates open 90 degrees, the inflation cable, which is connected to the inflation cylinder regulator, releases gas pressure from the inflation cylinder. Gas flows from the inflation cylinder, through hoses, to aspirators on the escape slide. The aspirators pull in ambient air to help inflate the slide, along with the gas from the inflation cylinder.
(2)
If the door-mounted escape system does not inflate automatically, you can pull the manual inflation handle on the the girt to inflate.
4. No. 1, 2, or 4 Passenger Door Escape System Operation (Fig. 5)
_____________________________________________________
A. General
(1) In this task an escape slide or slide-raft is referred to as an escape slide.
B. Functional Description
(1)
The escape system pack is automatically released when the door is opened from the inside in the ENGAGE mode. The door is forced open by the emergency power system (Refer to 52-11-00/001 for data on the emergency power system). The pack is pulled out from below the cover and the escape slide is inflated.
(2)
The girt bar stays attached to the floor. The lanyard attached to the girt bar releases the harness latch. This lets the shelf turn down around its hinges. As the door opens to 90 degrees, the pack starts to fall out of the cover. The pack falls until it gets to the end of the girt. As the pack falls, the lanyard is pulled to begin the inflation of the escape slide. The slide will inflate fully in approximately 3 seconds.
C. Control
(1)
To inflate the escape system, move the mode selector lever to the ENGAGE position and open the door.
(2)
If the door-mounted escape system does not inflate automatically, you can pull the manual inflation handle on the girt to inflate it.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS 2(68)
