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26 - FIRE PROTECTION
26-13-00 APU FIRE PROTECTION
CONTENTS:
Auto Extinguishing on Ground
TMUFIR801 LEVEL 3
EFFECTIVITY 26-13-00 Page 1
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 83
ALL
APU FIRE PROTECTION
AUTO EXTINGUISHING ON GROUND
The aircraft is on ground, and the APU is running
without supervision:
- 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.
The APU FIRE light on the EXTERNAL POWER panel comes
on, the external horn sounds.
The fuel low pressure shutoff valve and the fuel
solenoid valve close and the APU shuts down.
The single chime sounds, THE MASTER CAUTION and the
FAULT light on the APU MASTER SWITCH pushbutton come
on.
Three seconds later, the APU fire bottle is discharged
automatically and the DISCH light on the AGENT
pushbutton comes on.
- When the fire is extinguished, the MASTER WARNING.
the APU FIRE pushbutton light on the APU FIRE panel
and the APU FIRE light on the EXTERNAL POWER panel go
off, the external horn stops.
Note that it is not necessary to use the APU SHUT OFF
switch on the EXTERNAL POWER panel in case of APU fire
auto extinguishing.
TMUFIR801-T01 LEVEL 3
EFFECTIVITY 26-13-00 Page 2
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 84
ALL
APU FIRE PROTECTION - AUTO EXTINGUISHING ON GROUND
TMUFIR801-P01 LEVEL 3
EFFECTIVITY 26-13-00 Page 3
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 85
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THIS PAGE INTENTIONALLY LEFT BLANK
TMUFIR801 LEVEL 3
EFFECTIVITY 26-13-00 Page 4
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 86
ALL
26 - FIRE PROTECTION
26-13-00 APU FIRE PROTECTION: PRECAUTIONS
CONTENTS:
General
Fire Bottle
Discharge Cartridge
TMUFIAK01 LEVEL 3
EFFECTIVITY 26-13-00 Page 1
May 31/94
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 87
ALL
APU FIRE PROTECTION: PRECAUTIONS
GENERAL
Specific precautions must be taken during removal or
installation of a fire extinguishing bottle and a
discharge cartridge.
FIRE BOTTLE
WARNING: The fire bottle cartridges are explosive.
Remove them before working on the bottle.
Protective caps must be installed during
bottle removal/installation to prevent
damage to discharge diaphragm which could
result in injury to personnel.
DISCHARGE CARTRIDGE
WARNING: Before power is supplied to the aircraft make
certain that electrical circuits upon which
work is in progress are isolated.
WARNING: Cartridges are class "C" explosives and must
be handled or stored by authorized personnel
or disposed of by an approved method.
When cartdridge electrical connectors are
disconnected, the cartridge electrical pins
must be shunted with a protective shunt which
is provided by the manufacturer. A shunt plug
or shorting clip, will prevent bottle
discharge which could cause injury to
maintenance personnel.
The cartridge installed must be of the same
make as the fire bottle and correspond to the
specification indicated in the Maintenance
Manual.
TMUFIAK01-T01 LEVEL 3
EFFECTIVITY 26-13-00 Page 2
May 31/94
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 26 FIRE PROTECTION
UF94200
EFFECTIVITY Page 88
ALL
26 - FIRE PROTECTION
26-13-00 APU FIRE PROTECTION: COMPONENTS
CONTENTS:
Fire Detector
Fire Detection Unit (FDU)
Fire Bottle
Red Disc
TMUFIRK01 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 89
ALL
APU FIRE PROTECTION: COMPONENTS
SAFETY PRECAUTIONS
WARNING:
Cartridges are explosive, remove them before working
on the bottle. Protective caps must be installed during
bottle removal/installation to prevent damage to the
discharge diaphragm which could result in injury to
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