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provided DITCHING is not selected.
- In flt, or on gnd, Eng 2 or 3 running (Eng 1 or 2 A330)
- underfloor extract valve open
- OVBD extract valve closed
OVRD - underfloor extract valve closes
- OVBD extract valve partially opens provided DITCHING is not selected.
FAULT Lt - Amber with ECAM when extract low flow detected in avionics bay
- Fault Lt goes out when OVRD sel
CARGO AIR COND
COLD - 5˚C
Mid Posn - 15˚C
HOT - 25˚C
COLD HOT
BOTH
Overhead Panel Switches
10-Aug-10 For reference only 4
BULK
ISOL VALVES
ON - The inlet and outlet isolation valves open.
-valves close and fan stops if DITCHING sel.
- valves close and fan stops if smoke in cargo compt
OFF - inlet and outlet isolation valves close, fan stops
FAULT Lt - Amber with ECAM when either valve not in selected position.
HOT AIR
ON - Fan heater (fan blows onto electric element) on provided:
- Bulk cargo temp below selected temp and
- Bulk cargo door closed.
OFF - Fan heater operation is stopped. Inlet air not heated.
FAULT - Amber associated with ECAM message in case of:
- fan heater failure
- temp sensor failure
- BULK cargo door not fully closed
- Ventilation system failure
- Duct overheat (above 88˚C) Fault goes off when temp<70˚ and
OFF is sel.
AIR OVHT COND
FANS RESET (Overhead Maintenance Panel)
FAULT Lt - Overheat
- Fan stopped
- Press pb to reset.
23. COMMUNICATIONS
SVC INT
OVRD (Maintenance panel)
AUTO - If ldg gear compressed, ground crew can use service interphone jacks to
communicate with the cockpit.
ON - Comms possible with ldg gear not compressed
- ON light white
MECH
Pressed - COCKPIT CALL lights up Blue on external power panel.
- External horn sounds.
Released - COCKPIT CALL remains lighted
- external horn stops sounding.
Overhead Panel Switches
10-Aug-10 For reference only 5
FLT REST (A340) / CAB REST (A340) / PURS / FWD / MID / EXIT / AFT
Pressed - Pink light illuminates at area call panel
- CAPTAIN CALL appears at Attendant Indication Panel (AIP) with Green light.
- High-Low chime sounds through corresponding loudspeaker
ALL
Pressed - All stations respond as above.
- CALL ALL CAPT appears on AIP’s.
EMER
ON - Pink light at all area control panels
- CALL PRIO CAPT message on all AIP’s
- Red light and 3 x Hi-Lo chimes.
- Hi-Lo Chime x 3 through all loudspeakers
- ATT Amber light flashes on Audio Control Panels
ON Lt - Flashes white for emergency call from cockpit to cabin.
CALL Lt - Flashes Amber for emergency call from Cockpit or Cabin
If call from Cabin to Cockpit:
- White ON light & Amber CALL light flash
- Amber ATT lights on ACP’s flash
- 3 long buzzers sound in cockpit
System resets when attendant hangs up.
EVAC
COMMAND
ON - In the cockpit: - EVAC light flashes Red.
- In the cabin: - EVAC lights flash at all AIPS’s
- “EVACUATION ALERT” appears on all AIP’s and a
Red light flashes
- specific evacuation tone sounds.
OFF - The alert is stopped
The EVAC light flashes Red when alert is activated
Overhead Panel Switches
10-Aug-10 For reference only 6
AUTO
HORN SHUT OFF
Pressed - silences cockpit horn (generated when EVAC activated from cabin)
CAPT & PURS
CAPT & PURS - Alert may be activated from Cockpit or Cabin
CAPT - Alert may only be activated from Cockpit
- If one of the cabin EVAC pb is pressed, cockpit horn sounds for 3 sec only.
RCDR
GND CTL
ON - CVR, DFDR, QAR are energized
- On light Blue
AUTO - System automatically energized
- during first 5 min a/c elec network energized
- on gnd with 1 eng running. (system auto switches from ON to
AUTO at first eng start and in case of an electrical transient)
- in flight
System automatically de-energized 5 min after last eng shutdown.
CVR
TEST
Pressed - If CVR energized, test circuit activated
- result visible on Green indicator (one LED OK)
ERASE
Pressed (for 2 sec) - Erases tape completely if
- a/c on gnd
- parking brake on.
CAPT
Overhead Panel Switches
10-Aug-10 For reference only 7
24. ELECTRICAL
Selects the battery for voltage indication.
BAT 1(2)
Controls operation of corresponding Battery Charge Limiter (BCL)
AUTO - Automatically controls connect/disconnect of battery to DC BAT BUS by
open/closing battery contactor.
Batteries connected to DC BAT BUS when:-
- bat voltage ↓26.5V. End of charge cycle when bat current ↓4Afor 10sec on
　
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