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installed on the centre overhead panel in the flight compartment.
GF0910_003 RIGHT FIRE PULL
HANDLE SHOWN
LEFT AND APU
"ARM"
HANDLE PULLED
MANUAL OVERRIDE
BUTTON, PRESS IN
LOCK RELEASE
DISCH
PULL
1 2
DISCH
PULL
1 2
DISCH
PULL
1 2
ARE SIMILAR
To prevent accidental engine shut down and fire extinguisher discharges, each fire control handle is
maintained in the stowed position by four centre springs and a solenoid operated switch.
When a fire warning is received, the Data Acquisition Unit unlocks the solenoid to allow ease of
pulling the handle. To perform a precautionary engine shut down (no fire condition), the handle must
be manually released by depressing the manual override button (front panel behind each handle).
Each fire handle also has four lamps (bulbs) to illuminate each individual handle for fire detection.
When a handle is pulled to the armed position the following events occur:
GF0910_004
Fuel Shut−off
Hydraulic Shut−off
Pneumatic Shut−off
AC Power Shut−off
APU Ignition Shut−off
Fuel Shut−off
Hydraulic Shut−off
Pneumatic Shut−off
AC Power Shut−off
APU Fuel Shut−off APU Power Shut−off
LEFT ENGINE RIGHT ENGINE
DISCH
PULL
1 2
DISCH
PULL
1 2
DISCH
PULL
1 2
• Applicable (engine/APU) fuel Shut-Off Valve (SOV) closes.
• Each engine − applicable hydraulic SOV closes.
• Each engine and APU − applicable bleed SOV closes.
• A signal is sent to turn off the applicable Variable Frequency Generators (VFGs).
• A signal is sent to cancel ignition on the applicable engine or APU.
• Redundant commands are sent to ARM the FIDEEX control unit’s discharge circuits.
If the warning persists following the pulling of the handle, the fire will be extinguished by discharging
a fire extinguisher bottle.
FIRE PROTECTION
Flight Crew Operating Manual REV 51, Aug 14, 2006
CSP 700−6
Volume 2
09−10−4
FIRE CONTROL HANDLES (CONT'D)
Engine Fire Control Handle
GF0910_005
"BOTTLE 1"
HANDLE PULLED, ROTATED
TO THE LEFT AND HELD IN
POSITION
"BOTTLE 2"
HANDLE PULLED, ROTATED
TO THE RIGHT AND HELD IN
POSITION
ENGINE FIRE
NOTE PULL HANDLE
The right fire handle is
shown, left is similar in
operation.
DISCH
PULL
1 2
To discharge an engine bottle, the handle must be turned fully and held (at least one second) to
overcome the spring force of the handle; counterclockwise (bottle 1) or clockwise (bottle 2). This
action will send redundant commands to discharge the selected fire extinguisher bottle into the
armed zone. When a handle is turned fully in the opposite direction, the remaining bottle will be
discharged.
APU Fire Control Handle
GF0910_006
"BOTTLE 1"
HANDLE PULLED, ROTATED
TO THE LEFT AND HELD IN
POSITION
"BOTTLE 2"
HANDLE PULLED, ROTATED
TO THE RIGHT AND HELD IN
POSITION
APU FIRE
PULL HANDLE
DISCH
PULL
1 2
To discharge the APU bottle, the handle must be turned fully and held (at least one second) to
overcome the spring force of the handle; counterclockwise (bottle 1) or clockwise (bottle 2). This
action will send redundant commands to discharge the selected fire extinguisher bottle into the
armed zone.
To discharge a second extinguisher bottle in the APU, the lockout release pin must be slid to the
opposite position, to allow the handle to be rotated past the centre position. When a handle is
turned fully in the opposite direction, the remaining bottle will be discharged.
FIRE PROTECTION
REV 41, Jul 08, 2004 Flight Crew Operating Manual
CSP 700−6
Volume 2
09−10−5
FIRE CONTROL HANDLES (CONT'D)
Synoptic Pages
The following valves are commanded closed as a function of pulling the applicable fire DISCH
handle.
GF0910_007
Fuel Synoptic Page
APU and Engine
Feed Shut−off Valves
Bleed/Anti-ice Synoptic Page
High Pressure Valve (HPV)
and Pressure Regulator
Valve(PRV)
Hydraulic Shut−off Valves
HPV PRV
Hydraulic Synoptic Page
FADEC
APU
BLEED
MANAGEMENT
COMPUTER
NOTE
The left bleed valves are
shown, operation of the
right is similar.
NOTE
The left engine SOV is
shown, operation of the
right is similar.
NOTE
　
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