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TRIGGERING
The chemical oxygen generator supplies a flow of low
pressure oxygen for a minimum time of 13 or 15 minutes.
In case of rapid cabin depressurization, oxygen masks
are automatically presented to passengers.
TMUOXYR01-T01 LEVEL 3
EFFECTIVITY 35-21-00 Page 2
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 44
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION - TRIGGERING
TMUOXYR01-P01 LEVEL 3
EFFECTIVITY 35-21-00 Page 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 45
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION
AUTOMATIC OPERATION
The system operates automatically when the altitude
pressure switch closes.
A taped announcement is transmitted over the passenger
address system.
The SYS ON white indicator light comes on.
The TIME DELAY RELAYS switch off the power supply to
the OXYGEN POWER RELAYS after 30 s.
The announcement may be stopped by pressing momentarily
the TMR RESET pushbutton.
TMUOXYR01-T02 LEVEL 3
EFFECTIVITY 35-21-00 Page 4
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 46
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION - AUTOMATIC OPERATION
TMUOXYR01-P02 LEVEL 3
EFFECTIVITY 35-21-00 Page 5
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
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PASSENGER OXYGEN DESCRIPTION AND OPERATION
MANUAL OPERATION
The passenger oxygen masks may be presented at any
time by pressing the MASK MAN ON pushbutton.
The taped announcement may be stopped by momentarily
pressing the TMR RESET pushbutton.
TMUOXYR01-T03 LEVEL 3
EFFECTIVITY 35-21-00 Page 6
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 48
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION - MANUAL OPERATION
TMUOXYR01-P03 LEVEL 3
EFFECTIVITY 35-21-00 Page 7
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 49
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION
RESET OPERATION
When the TMR RESET pushbutton is pressed, the ON white
light of the TMR RESET pushbutton comes on.
The indicator light SYS ON goes off and the taped
announcement stops.
On ground, used chemical oxygen units must be replaced
and all masks restowed.
The system is reset by momentarily pressing the TMR
RESET pushbutton on the maintenance panel.
TMUOXYR01-T04 LEVEL 3
EFFECTIVITY 35-21-00 Page 8
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
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EFFECTIVITY Page 50
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION - RESET OPERATION (A/C ON GROUND)
TMUOXYR01-P04 LEVEL 3
EFFECTIVITY 35-21-00 Page 9
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
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PASSENGER OXYGEN DESCRIPTION AND OPERATION
FAULT OPERATION
When the cabin altitude is more than 14000 FT and relay
8WR and 9WR remain open after delay:
- Relay 15WR is energized
- The Fault amber light comes on
- The SYS ON white light and Public Address
systems are still on
The FAULT light on the TMR RESET pushbutton comes on
if a failure of the TIME DELAY RELAYS occurs.
TMUOXYR01-T05 LEVEL 3
EFFECTIVITY 35-21-00 Page 10
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 52
ALL
PASSENGER OXYGEN DESCRIPTION AND OPERATION - FAULT OPERATION
TMUOXYR01-P05 LEVEL 3
EFFECTIVITY 35-21-00 Page 11
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 35 OXYGEN
UF94200
EFFECTIVITY Page 53
ALL
SELF EXAMINATION
How do the time delay relays control the pax system
automatic operation ?
A - They cut off electrical supply after 30
seconds.
B - They supply the system for 3 seconds.
C - They supply the system after 30 seconds.
The TMR RESET FAULT light comes on if:
A - The reset operation is not yet completed.
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