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OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
CARGO - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-40-30 P 1/6
FCOM 19 AUG 10
OVERHEAD CARGO AIR COND PANEL
Applicable to: ALL
(1) ISOL VALVE pushbutton
On : The inlet and outlet isolation valves open, and the extraction fan runs. If smoke
is detected in the cargo compartment, or DITCHING is selected, the valves close
and the fan stops.
OFF : The inlet and outlet isolation valves close, and the extraction fan stops.
FAULT lt : The amber light and associated ECAM caution come on, when either inlet or
outlet valve is not in the selected position.
(2) HOT AIR pushbutton 　
ON : The fan heater operates, provided the BULK cargo compartment temperature is
below the selected one, and the BULK cargo door is closed.
OFF : The fan heater stops. Inlet air is not heated.
FAULT lt : The amber light, and associated ECAM message, come on when the duct
overheats (above 88 °C/190 °F). The light goes off, when the temperature drops
below 70 °C (158 °F), and OFF is selected. The fan heater stops.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
CARGO - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-40-30 P 2/6
FCOM 19 AUG 10
(3) Temperature selector 　
COLD : 5 °C (41 °F)
HOT : 25 °C (79 °F)
Middle position : 15 °C (60 °F)
Note: Cargo compartment temperature may vary due to such factors as flight duration,
outside temperature, and cabin temperature. As a result, the actual temperature may
be higher than the one indicated by the selector position.
(4) COOLING selector 　
OFF : The cold air valve is closed. No cold air is added to the ventilation air.
NORM : The cold air valve is partially open for normal operation.
MAX : The cold air valve is fully open. Maximum quantity of cold air is supplied to cool the
forward cargo compartment.
(5) Temperature selector 　
COLD : 5 °C (41 °F)
HOT : 25 °C (79 °F)
Middle position : 15 °C (60 °F)
(6) FWD PRESEL pushbutton 　
ACTIV lt : The light comes on green, when FWD PRESEL is set to ON, or the cargo
compartment service panel's ON/OFF toggle is momentarily switched to ON.
Once this toggle switch is ON, the temperature can be preselected on the forward
cargo compartment service panel.
OFF : ACTIV light goes out. Temperature selection from the cockpit overrides the
temperature preselected from the service panel.
Note: The preselection system is automatically set to OFF, when the forward cargo door is
opened after a flight.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
CARGO - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-40-30 P 3/6
FCOM 19 AUG 10
OVERHEAD MAINTENANCE PANEL
Applicable to: ALL
(1) OVHT COND FANS RESET pushbutton
FAULT lt : The light comes on amber when any fan overheat occurs. Fan is stopped. To
resume fan operation press the OVHT COND FANS RESET pushbutton (FAULT
light goes out).
ECAM COND PAGE
Applicable to: ,
(1) Trim air valve (Heating)
H - Hot (Green) : Valve is open.
C - Cold (Green) : Valve is closed.
Amber, if the valve fails.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
CARGO - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-40-30 P 4/6
FCOM 19 AUG 10
(2) COLD AIR VALVE
(A)
In line – Green : Valve is fully open.
In line – Amber : Valve is failed open.
In transit – Green : Valve is partially open.
In transit – Amber : Valve is failed partially open, or in transit
Cross line – Green : Valve is fully closed.
Cross line – Amber : Valve is failed closed.
Note: The color of the symbol changes from green to amber, if one of the two pack
flow control valves is fully closed, independent of the cold air valve position.
(B) This indication is in green either when the pack flow control valves are not fully closed, or
when positions are not available. It becomes amber when one of the two valves is fully
closed.
(C) This indication is in white.
(3) Bulk fan heater
The arrow is normally green. It becomes amber, if the heater fails.
C - Cold (green) : The heater operates at its lowest level.
H - Hot (green) : The heater operates at its highest level.
(4) Compartment Indication
This indication is displayed in white.
(5) Compartment Temperature Indication
This indication is displayed in green.
A330/A340 FLIGHT CREW
OPERATING MANUAL
　
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