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MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 74
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26 - FIRE PROTECTION
26-13-00 APU FIRE PROTECTION: AUTO
EXTINGUISHING GROUND TEST
CONTENTS:
Auto Extinguishing Ground Test
TMUFIRN01 LEVEL 3
EFFECTIVITY 26-13-00 Page 1
Aug 31/96
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 75
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APU FIRE PROTECTION: AUTO EXTINGUISHING GROUND TEST
The test is performed from the maintenance panel.
CAUTION: This test has to be performed with the APU
shutdown and the MASTER SWitch in the ON
position.
- Select AUTO EXTING TEST pushbutton.
When the TEST pushbutton is pressed, the ON light and
the APU FIRE PUSH light come on.
The squib circuit is isolated during the test.
The FUEL LP/ISOL VALVE closes and the EMER SHUT DOWN
control relay is energized.
After a time delay, the external horn sounds, the APU
FIRE light on the external power receptacle panel and
the OK light on the TEST pushbutton come on.
The illuminated OK light indicates the correct auto
extinguishing relay operation.
- Select the RESET pushbutton.
When the RESET pushbutton is pressed, the OK light,
ON light, APU FIRE PUSH light and APU FIRE light go
off. The external horn stops.
Three seconds after the reset, the automatic
extinguishing circuit is recovered.
TMUFIRN01-T01 LEVEL 3
EFFECTIVITY 26-13-00 Page 2
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 76
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APU FIRE PROTECTION: AUTO EXTINGUISHING GROUND TEST
TMUFIRN01-P01 LEVEL 3
EFFECTIVITY 26-13-00 Page 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
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TMUFIRN01 LEVEL 3
EFFECTIVITY 26-13-00 Page 4
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 78
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26 - FIRE PROTECTION
26-13-00 APU FIRE PROTECTION
CONTENTS:
System Operation in Case of APU Fire (Manual
Extinguishing)
TMUFIR701 LEVEL 3
EFFECTIVITY 26-13-00 Page 1
May 31/96
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 79
ALL
APU FIRE PROTECTION
SYSTEM OPERATION IN CASE OF APU FIRE (Manual
Extinguishing)
APU running in flight:
When a fire is detected, the continuous repetitive
chime sounds, the MASTER WARNING flashes and the APU
FIRE pushbutton light on the APU FIRE panel comes on.
- Select the APU FIRE pushbutton.
When the APU FIRE pushbutton is released out, the
continuous repetitive chime stops, the Fuel Low
Pressure Shutoff valve and the Fuel Solenoid valve
close and cause APU shutdown.
The single Chime sounds, the MASTER CAUTION and the
FAULT LIGHT on the APU MASTER switch pushbutton come
on. The SQUIB light comes on to indicate that the AGENT
pushbutton can be used.
The Electronic Control Box (ECB) controls the closure
of the fuel valves.
A ten seconds delay allows the airflow to reduce, this
increases the agent effect.
- Select the AGENT pushbutton .
When AGENT pushbutton is pressed, the fire bottle is
discharged in the APU compartment and the DISCH light
comes on.
When the fire is extinguished, the MASTER WARNING and
the APU FIRE pushbutton lights go off.
- Select APU MASTER SWITCH .
When the APU MASTER SWITCH pushbutton is released out,
the FAULT light goes off.
TMUFIR701-T01 LEVEL 3
EFFECTIVITY 26-13-00 Page 2
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 80
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APU FIRE PROTECTION - SYSTEM OPERATION IN CASE OF APU FIRE (Manual Extinguishing)
TMUFIR701-P01 LEVEL 3
EFFECTIVITY 26-13-00 Page 3
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MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
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TMUFIR701 LEVEL 3
EFFECTIVITY 26-13-00 Page 4
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MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 82
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