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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Functional Description and Operation
To remove the masks from their stowage boxes, grasp and pull
on the red donning/inflation plates (ears). The elastic mask
harness inflates when the left plate is pushed in. The mask can
be put on with one hand. The harness deflates when the plates
are released. The deflated harness holds the mask securely on
the face.
As the mask is pulled from the stowage box, the box shutoff
valve opens. When you close the door, the OXY-ON flag pivots
into view.
The flight crew oxygen mask now supplies oxygen to the user.
The crew oxygen masks are diluter/demand masks. Controls on
each mask determine the mode of oxygen delivery.
In the demand mode, a mask regulator supplies oxygen to the
crew member only when the crew member inhales. To select
continuous flow mode, turn the EMERGENCY knob to
EMERGENCY.
In the diluter mode, ambient cabin air mixes with oxygen. An
aneroid metering valve in the mask controls this function. The
mix of air and oxygen is proportional to the cabin pressure
altitude. To select pure oxygen, push the red N/100% dilution
control to the 100% position.
The pilot masks stow in panel-mounted boxes. The boxes have
these features:
* Shutoff valve
* RESET/TEST selector (red)
* OXY-ON flag (white)
* Oxygen flow indication blinker (yellow cross).
The blinker is an indication of oxygen flow to the mask.
The RESET/TEST selector is used to do a test of the system and
reset the shutoff valve when the mask is stowed.
The observer mask stowage cups do not have the box features.
OXYGEN - CREW - ORONASAL MASK - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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OXYGEN - CREW - ORONASAL MASK - FUNCTIONAL DESCRIPTION
OXYGEN - CREW - ORONASAL MASK - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
35-10-00-211
OXYGEN - CREW - ORONASAL MASK - FUNCTIONAL DESCRIPTION
OXYGEN - CREW - ORONASAL MASK - FUNCTIONAL DESCRIPTION
EFFECTIVITY
GUN 201-999 35-10-00
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D633A101-GUN Oct 10/2006
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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OXYGEN - CREW - ORONASAL MASK - FUNCTIONAL DESCRIPTION
35-10-00
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D633A101-GUN Oct 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
You can refill the crew oxygen cylinder without removal of the
cylinder from the airplane. Oxygen refill is from the remote fill
panel.
Location
The crew oxygen cylinder remote fill panel is on the right side of
the EE compartment.
Physical Description
These are the components on the remote fill panel:
* Temperature and pressure selectors
* Oxygen pressure gage
* Fill connection
* Fill valve.
Operation
Before you connect the oxygen source, adjust the temperature
and pressure selectors to the existing oxygen cylinder
conditions. After you connect the external oxygen source,
open the supply valve slowly so that supply pressure is not
more than cylinder pressure by 250 psi.
CAUTION: NEVER ALLOW AIRPLANE CYLINDER PRESSURE
TO EXCEED 2300 PSI.
WARNING: NO LUBRICANT OR GASKETS SHALL BE USED IN
MAKING EXTERNAL CONNECTIONS.
OXYGEN - CREW - REMOTE FILL PANEL
EFFECTIVITY
GUN 101-118 35-10-00
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D633A101-GUN Oct 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
35-10-00-201
OXYGEN - CREW - REMOTE FILL PANEL
OXYGEN - CREW - REMOTE FILL PANEL
EFFECTIVITY
GUN 101-118 35-10-00
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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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
　
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