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D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
38-31-00-007
Purpose
The door sill drain bladder keeps rain water that has drained
from the door sill areas when the airplane is in the air.
Location
The door sill drain bladder for the forward door sill drain system
is in the EE compartment on the forward left side, outboard of
the E1 rack.
The door sill drain bladder for the aft door sill drain system is
behind the aft cargo compartment, aft of the water tank.
Physical Description
The door sill drain bladder has a top half and a bottom half. The
two halves of the door sill drain bladder are made of silicone
rubber. The two halves of the door sill drain bladder are glued
together to give a watertight seal. A valve assembly in the
bottom of the door sill drain bladder closes when the airplane is
pressurized to keep the water in the bladder.
The door sill drain bladder holds a maximum of one gallon of
rain water.
When the airplane pressure increases to two to five psid, the
valve in the bottom of the door sill drain bladder closes to keep
the rain water in the bladder during flight.
When the airplane pressure decreases to 0.25 psid, the valve
opens and lets the rain water drain overboard through the door
sill drain fitting on the bottom of the airplane.
W/W - GRAY WATER SYSTEM - DOOR SILL DRAIN BLADDER
EFFECTIVITY
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D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
38-31-00-004
W/W - GRAY WATER SYSTEM - DOOR SILL DRAIN BLADDER
W/W - GRAY WATER SYSTEM - DOOR SILL DRAIN BLADDER
EFFECTIVITY
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D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
38-31-00-004
W/W - GRAY WATER SYSTEM - DOOR SILL DRAIN BLADDER
W/W - GRAY WATER SYSTEM - DOOR SILL DRAIN BLADDER
EFFECTIVITY
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D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
38-31-00-004
THIS PAGE IS INTENTIONALLY LEFT BLANK
W/W - GRAY WATER SYSTEM - DOOR SILL DRAIN BLADDER
38-32-00
Page 1
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The vacuum waste system removes human waste material
from the toilets and holds it in the waste tank.
General Description
The vacuum toilet collects human waste. A flush cycle puts the
waste material into the vacuum waste tubing.
Cabin pressure pushes the material to the vacuum waste tank.
There are two sources that cause low pressure (vacuum) in the
tank:
* The vacuum blower
* Cabin-to-ambient pressure differential.
The waste is kept in the waste tank until servicing. Servicing is
done at the waste service panel.
The vacuum waste system has these components:
* Toilet assembly
* Waste tank
* Liquid separator
* Waste tank rinse nozzle
* Waste tank rinse filter
* Waste tank rinse fitting assembly
* Waste drain valve assembly
* Waste drain ball valve
* Drain line blockage removal valve
* Vacuum check valve
* Vacuum blower
* Vacuum blower barometric switch.
Abbreviations and Acronyms
* ac - alternating current
* C - Celsius
* dc - direct current
* F - Fahrenheit
* FCU - flush control unit
* FWD - forward
* LCM - logic control module
* REF - reference
* TYP - typical
* v - volts
WATER/WASTE - VACUUM WASTE SYSTEM - INTRODUCTION
EFFECTIVITY
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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
38-32-00-001
WATER/WASTE - VACUUM WASTE SYSTEM - INTRODUCTION
WATER/WASTE - VACUUM WASTE SYSTEM - INTRODUCTION
EFFECTIVITY
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D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
38-32-00-001
Component locations
There is a toilet assembly and flush switch in each lavatory.
Training Information Point
　
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