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A330-300TECHNICAL TRAINING MANUAL

GENERAL FAMILIARIZATION COURSE

21 AIR CONDITIONING

GE Metric

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This document must be used

for training purpose only.

Under no circumstances

should this document be used as a reference.

All rights reserved.

No part of this manual may be reproduced in any form,

by photostat, microfilm, retrieval system, or any other means,

without the prior written permission of Airbus Industrie.

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** System Presentation (1) 1..................................

System Controls and Indicating - General (1) 7...........................

TEMPERATURE CONTROL

** System Design Philosophy (1) 15..............................

** System Controls and Indicating (1) 19............................

** Pack Presentation (1) 29.................................

** ECAM Page Presentation (1) 35..............................

COCKPIT/CABIN VENTILATION

** System Presentation (1) 53................................


AFT GALLEY HEATING


AVIONICS/AIR CONDITIONING BAY VENTILATION


_A330-300 TECHNICAL TRAINING MANUAL

21 AIR CONDITIONINGGENERAL FAMILIARIZATION COURSE

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** Avncs Eqpt Gnd Cooling Sys Ctl & Indicating (1 77......................

FWD CARGO COMPT VENT/TEMP CONTROL



AFT CARGO COMPARTMENT VENTILATION

System Presentation (1) 93.................................

System Controls and Indicating (1) 97.............................

BULK CARGO COMP VENTILATION/HEATING

** System Presentation (1) 101...............................

** System Controls and Indicating (1) 105...........................

PRESSURIZATION

System Design Philosophy (1) 111..............................

** System Controls and Indicating (1) 115...........................



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SYSTEM PRESENTATION

IntroductionPresentation

21 - AIR CONDITIONING

DATE : SEP 1996 Page 1 F21G010



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PRESENTATION

Bleed air coming from pneumatic system is controlled in flow before

reaching two air conditioning packs which ensure basic temperatureregulation.Air delivered by the packs is mixed with recirculated air from the cabin zoneswhich is also used for avionics ventilation purpose.

Fine temperature adjustment of air distributed in the pressurized zones isobtained by controlling the amount of hot air added to the air coming fromthe mixer unit.

Correct pressurization is obtained by controlling the conditioned air dischargethrough two outflow valves.





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STUDENT NOTES





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SYSTEM CONTROLS AND INDICATING -

GENERAL

Overhead Panel

Main Instrument PanelForward Attendant Panel


DATE : APR 1999 Page 1 F21G210



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OVERHEAD PANELThe air conditioning system controls are located on the overhead panel.





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MAIN INSTRUMENT PANELThe air conditioning system can be monitored on the ECAM system display.System information is shown on the following pages :

- BLEED page : pack and emergency ram air.- AIR COND page : temperature control, cabin ventilation, cargoventilation, cooling and heating (optional).

- PRESS page : pressurization and avionics ventilation.- CRUISE page : zone temperature and main pressurization systemparameters.





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FORWARD ATTENDANT PANELAt the forward attendant station, the Programming and Indication Moduleallows cabin crew to slightly adjust the temperature regulation in the threecabin zones.





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STUDENT NOTES





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TEMPERATURE CONTROL:

SYSTEM DESIGN PHILOSOPHY

Basic Principle

Pack ControllersZone ControllerSelf Examination


DATE : DEC 1997 Page 1 F21TA02



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BASIC PRINCIPLEAir flow is regulated by two flow control valves. Two packs provide air basictemperature regulation.Both packs provide air at the same temperature.Trim air pressure regulating valves maintain the downstream pressure abovethe cabin pressure allowing hot air and cold air to be mixed.

Trim air valves optimize the temperature by adding hot air to pack air supply,when necessary.A part of cabin air is recirculated to decrease air supply demand.

PACK CONTROLLERS

Each Pack Controller provides:- basic temperature regulation of its associated pack in accordancewith the demand from the zone controller.

- and flow control setting and monitoring.

ZONE CONTROLLERThe Zone Controller provides:

- A basic temperature regulation signal elaboration which is the lowestdemanded zone temperature.- An optimized temperature control which is the demandedtemperature on the control panel.

- An optimized flow control demand.Optimized temperature is provided by control of the trim air valves.In case of cooling demand not satisfied due to low air flow, the zone

controller sends a signal to the EIVMU or ECB in order to provide necessaryflow to the packs.EIVMU : Engine Interface Vibration and Monitoring Unit.ECB : Electronic Control Box (APU).If the selected temperature cannot be maintained, the bleed monitoring

computer receives a signal in order to control the bleed air deliveredtemperature, at a decreased level.The bleed air temperature is reduced from 200C to 150C. This mode isinhibited if the wing anti-ice system is in operation.





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SELF EXAMINATION

What is the purpose of the pack?

A - To regulate hot air pressure.

B - To adjust the temperature in the four zones.C - To regulate basic temperature.

What is the function of each pack controller?

A - To control the corresponding pack and flow control valve.B - To control the trim air valves.

C - To control the zone controller.

What is the purpose of the zone controller?

A - To control zone temperature.B - To control the flow control valves.C - To control the packs.





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SYSTEM CONTROLS AND INDICATING

AIR Panel

Ram Air Pushbutton SwitchPack 1(2) Pushbutton Switches

Pack Flow SelectorZone Temp SelectorsHot Air 1(2) Pushbutton Switches

P.I.M.Cabin Temp HardkeyTemperature Preselection SoftkeysReset Softkey

Reset Panel


DATE : DEC 1997 Page 1 F21TC10



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AIR PANELRAM AIR PUSHBUTTON SWITCH

When the RAM AIR pushbutton is set to ON, on the AIR COND panel, theemergency ram air flaps open provided the ditching pushbutton switch is innormal position on the PRESS panel.

When it is released out, the emergency ram air inlet flap closes.ON : ON light comes on white. Provided the DITCHING pushbuttonswitch is in normal position:

- The ram air inlet flap opens- Both outflow valves open at 50% when P is lower than 1 psi.OFF : The ram air inlet flap closes and the outflow valves return totheir normal position.

PACK 1(2) PUSHBUTTON SWITCHES

When pack 1 ( or pack 2 ) pushbutton is pressed in, the pack flow controlvalve operates if pneumatic pressure is available. When set to OFF, the packflow control valve is maintained closed electrically.

ON : The flow control valve opens provided there is no pack overheat,no engine starting sequence, no upstream pressure below minimum, nocorresponding fire pushbutton released out, no passenger/crew dooropen nor ditching selected.

OFF : The flow control valve closes.FAULT : comes on amber when the flow control valve positiondisagrees with the selected position or in case of pack overheat.

PACK FLOW SELECTOR

The PACK FLOW selector serves to select the pack flow.The PACK FLOW selector enables the pack flow setting to be selected in

accordance with the number of passengers and the ambient conditions.LO : 80% of normal flowNORM : 100%HI : 125% of normal flow.

ZONE TEMPERATURE SELECTORS

The COCKPIT and CABIN temperature selectors enable the selection of thedesired ambient temperature in the corresponding zone.

12 oclock position: 24C

COLD position: 18CHOT position: 30C

HOT AIR 1(2) PUSHBUTTON SWITCHES

When the HOT AIR pushbutton is pressed in, the trim air pressure regulatingvalve opens and pneumatically regulates hot air pressure above the cabinpressure. When set to OFF, the valve is electrically closed.

ON : The valve regulates hot air pressure.

OFF : The valve closes, the trim air valves close and the FAULTcircuit is reset.FAULT : Comes on amber when a duct overheat temperature isdetected (88C). FAULT light goes off when the duct temperature

drops below 70C or OFF is selected .





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P.I.M.CABIN TEMP HARDKEY

When the CABIN TEMP hardkey is pressed on the Programming andIndicating Module (P.I.M.), the cabin temperature page is displayed. Itprovides the menu for cabin temperature and remote control of the three cabin

zones.

The actual temperature is simultaneously represented by a figure and abargraph. The preselected range is centered on the cockpit selectedtemperature and covers 5 degrees celcius (+/-2.5 DEG C).

The three arrows initially indicate the cockpit selected temperature.The seat row values for each zone depend on the cabin layout selected on the

Cabin Attendant Module (C.A.M.).As an option, all temperatures can be indicated in degrees fahrenheit (64-86

DEG F).

If the actual temperature is lower than 18 DEG C or greater than 30 DEG C,a green arrow is respectively displayed on the left or the right of the bargraph.





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P.I.M.TEMPERATURE PRESELECTION SOFTKEYSThere are two softkeys per zone wich enable the cabin crew to add orsubstract by increments of 0.5 degrees celcius up to a 2.5 degrees celciusrange around the cockpit selected temperature.The arrow indicating this preselected value moves accordingly on the

temperature bargraph.

respectively disappear if the upper or lowerlimit is reached.

RESET SOFTKEYIf any preselection has been applied, the reset command is available and the

reset indication displayed in white.

When the reset softkey is pressed in, the three arrows indicating the threepreselected values move back to the cockpit selected temperature.

The reset indication becomes green and disappears.

If the cockpit selected temperature is changed, then the three preselectable

ranges are repositioned on the bargraphs and the preselected values reset.





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RESET PANELA reset control is provided for each controller.Reset is performed by pulling and pushing the corresponding circuit breaker.





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STUDENT NOTES





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PACK PRESENTATION

Introduction

Exchangers / CompressorPlenum ChamberCheck ValveHigh Pressure Water Separation Loop

Turbine / FanTemperature Control Valve, Ram Air Inlet and Ram AirOutlet FlapsBy Pass Valve

Anti Icing ValveSensors

Downstream Check ValveSelf Examination


DATE : FEB 1998 Page 1 F21TE10



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ANTI ICING VALVE

An anti-icing valve prevents ice formation across the condenser by supplyinghot air at the turbine outlet.The anti-ice valve operates according to delta pressures sensed across thecondenser in order to prevent ice build-up at any time.In case of pack controller failure, the anti-icing valve is used also as a

temperature control valve back-up.Its solenoid is then de-energized and the anti-icing valve pneumaticallyoperates under the control of the Pneumatic Temperature Sensor to maintaina pack discharge temperature of approximately 11C (52F).

SENSORS

Pack sensors are used for pack temperature control, monitoring andindicating.

DOWNSTREAM CHECK VALVE

A downstream check valve prevents reverse flow back to the pack.





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SELF EXAMINATION

What is the purpose of the temperature control valve ?

A - To reduce the air flow to the compressor stage.

B - To modulate the pack discharge temperature.C - To increase the air flow to the turbine stage.

What is the main purpose of the anti-icing valve ?

A - The anti-icing valve prevents ice formation across theprimary heat exchanger.

B - The anti-icing valve prevents ice formation across the mainheat exchanger.C - The anti-icing valve prevents ice formation across the packcondenser.

What is the purpose of the ram air flaps ?

A - To ensure cabin ventilation if both packs fail.B - To provide air to the pack compressor.C - To modulate the main air flow through the heat exchangers.

What is the purpose of the by-pass valve ?

A - To by-pass the air cycle machine when it is faulty.

B - To by-pass the air cycle machine when its associated packcontroller is faulty.C - To modulate the air flow through the air cycle machine.

What is the purpose of the reheater ?

A - To condense humidity of air into water particles.B - To revaporise remaining water particles not extracted by thewater extractor.

C - To reheat air leaving the turbine.





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TEMPERATURE CONTROL :

ECAM PAGE PRESENTATION

Pack Flow Control Valve

Pack Inlet FlowCompressor Outlet TemperatureTemperature Control ValvePack Discharge Temperature

By-pass ValveEmergency Ram AirBleed UsersHot Air 1 (2)

Trim Air Pressure Regulating ValveTrim Air Shut Off Valve

Trim Air ValvesZone Duct Temperature

Zone TemperatureZone Controller StatusAir Ducts


DATE : OCT 1997 Page 1 F21TM10



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PACK FLOW CONTROL VALVE

The flow control valves indications are normally green.

PACK INLET FLOW

The position of the needle represents the actual rate of pack flow.

COMPRESSOR OUTLET TEMPERATURE

The compressor outlet temperature indications are normally green. The valuevaries by steps of 2C (4F).

GREEN

: Valve not fully closed.

: The pack airflow data is not available.

AMBER CROSSES

: LO = 70% of airflow.

: HI =130% of airflow.

The needle can vary from

62% to 137% of airflow.GREEN NEEDLE

AMBER

: Valve fully closed.

AMBER CROSSES

: Valve position data not available.

AMBER

: The temperature indication exceeds 260C(500F). It becomes green again when thetemperature drops below 180C (356F).

AMBER

: The temperature data is not available.



_A330 300 TECHNICAL TRAINING MANUAL


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TEMPERATURE CONTROL VALVE

The needle position represents the position of the temperature control valve.

PACK DISCHARGE TEMPERATURE

The value represents the pack outlet temperature controlled by the pack

controller. It is normally displayed in green. The value varies by steps of 2C(4F).

: C (Cold) corresponds to a fully closed position.

: H (Hot) corresponds to a fully opened position.

GREEN NEEDLE

: The TCV position data is not available.

AMBER CROSSES

AMBER

: The temperature indication exceeds 95C (203F). It

becomes green again when the temperature drops

below 60C (140F).

AMBER


: The TCV is determined faulty.

AMBER NEEDLE



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21 AIR CONDITIONING


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EMERGENCY RAM AIR

The Ram air valve indications are normally displayed in green.

BLEED USERS

GREEN

: Valve normally closed.

AMBER VALVE

GREEN DUCTS

: Undetermined position, valve in transit.

GREEN

: Valve normally open.

AMBER CROSSES

: Valve position data not available.

AMBER VALVE

GREEN DUCT

: Valve fully closed and disagrees with command.

AMBER VALVE

GREEN DUCTS

: Valve open on ground or valve position

open but disagrees with command.

GREEN

In normal operation, bleed users are displayed in green

AMBER

The two flow control valves and the Ram-air valve are fully closed.




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HOT AIR 1 (2)

Hot air color indications give the pack flow control valve positions.

TRIM AIR PRESSURE REGULATING VALVE

These indications give the Trim Air Pressure Regulating Valve positions.

GREEN

: Respective flow control valve not fully

closed or valve position data not available

AMBER

: Flow control valve fully closed.

GREEN


GREEN


AMBER

: Valve abnormally closed.

AMBER

: Valve abnormally open.

AMBER CROSSES

GREEN CIRCLE

: Position data not available.




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21 AIR CONDITIONING



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TRIM AIR SHUT OFF VALVE

These indications give the Trim Air Shut-off Valve position.

TRIM AIR VALVES

The position of the needle represents the valve position and consequently thehot air flow.

GREEN


GREEN


AMBER

: Valve abnormally closed.

AMBER CROSSES

: Position data not available.

: H (Hot), valve fully open.

: C (Cold), valve fully closed.

GREEN NEEDLE

: Valve position data is not available.

AMBER CROSSES

21 AIR CONDITIONING

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ZONE DUCT TEMPERATURE

The zone duct temperature indications are normally displayed in green. The

temperature varies by steps of 2C (4F).

ZONE TEMPERATUREThe zone temperature indications are always displayed in green. Thetemperature varies by steps of 1C (2F).

These indications are also displayed on the ECAM CRUISE page.The temperature varies by steps of 1C (2F).

A green pulsing flow increase request warning is displayed when the flow is

insufficient to reach the selected temperature.

AMBER

: The temperature indication exceeds 88C

(190F). It becomes green again when the

temperature drops below 70C (158F).

AMBER


GREEN

: Temperature normal display.

AMBER


: This green pulsing message is displayed

when the air flow is insufficient to reach

the selected zone temperature.

Not displayed otherwise.GREEN

GREEN

: Temperature normal display.

AMBER



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ZONE CONTROLLER STATUS

The PACK REG indication appears in green when the zone controller isinoperative.

AIR DUCTS

The ducts are normally colored in green.

: The zone controller is inoperative (both

channels are faulty) or the data related to

the zone controller state is not available.GREEN

The air distribution is not yet operative

(engine starting sequence) or air system

failure or associated FCV fully closed..

AMBER


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COCKPIT / CABIN VENTILATION :

SYSTEM PRESENTATION

COCKPIT/CABIN

GeneralFiltersClogging Indicators

Recirculation FansCheck ValvesRecirculation ValvesAir Outlets

LAVATORY/GALLEY

General

Extraction FanDifferential Pressure SwitchSafety SwitchSelf Examination

DATE : OCT 1997 Page 1 F21CA10Page 53

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COCKPIT/CABIN

GENERALCabins are ventilated by mixed air from the mixer unit and hot airfrom the trim air valves.

The cockpit is ventilated with fresh air from pack 1 mainly and hot airfrom its dedicated trim air valve.

FILTERSFilters are installed at the inlet of the cabin air recirculation circuit.

CLOGGING INDICATORSThe clogging indicators are differential pressure switches used togenerate maintenance information in case of filter clogging.

RECIRCULATION FANSTwo recirculation fans feed the mixer unit with air from the cabin.In addition, they are used as blowers for the avionics ventilation.

The recirculation fans are controlled from the CAB FANS pushbuttonswitch on the overhead panel.The fans automatically stop in case of DITCHING.

CHECK VALVES

Check valves are installed to prevent reverse flow when recirculationfans are OFF.

RECIRCULATION VALVESThe recirculation valves are normally open.

They close when both packs are OFF to keep the avionics equipmentsufficiently ventilated.

The signal indicating that both packs are OFF is sent by the zonecontroller.

AIR OUTLETSConditioned air tapped from the main distribution ducts is sent to the

individual and fixed air outlets.


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LAVATORY/GALLEY

GENERALLavatory and galley ventilation air is ducted from the main cabin airdistribution supply.

Air is discharged overboard by differential pressure or by anExtraction Fan.

Cabin temperature sensors are ventilated with cabin air drawn by the

Extraction Fan.

EXTRACTION FAN

The Extraction Fan operates on ground when electrical power isavailable and in flight when delta P is lower than 1 psi.

The Extraction Fan is controlled by the ventilation controller.

The ground/flight signal comes from Landing Gear Control InterfaceUnit 2 (LGCIU).

DIFFERENTIAL PRESSURE SWITCHThe Differential Pressure Switch serves to detect when delta P is lowerthan 1 psi for extraction fan operation control.

SAFETY SWITCHA Safety Switch detects any abnormal low pressure and sends signals

to the ventilation controller for condition monitoring.


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SELF EXAMINATION

When does the lavatory and galley extraction fan operate ?

A - On ground when P is higher than 1 psi and in flight whenP is lower than 1 PSI.B - Always when electrical power is available.

C - On ground when electrical power is available and in flight

when P is lower than 1 psi.

When do the recirculation valves close ?

A - When both packs are OFF.B - When pack 1 is OFF.C - When pack 2 is OFF.


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COCKPIT / CABIN VENTILATION :


Cab Fans Pushbutton Switch

Fans Reset Pushbutton

Fan Indication

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CAB FANS PUSHBUTTON SWITCH

The CAB FANS pushbutton switch enables the crew to simultaneously stopboth recirculation fans. When the CAB FANS pushbutton switch is pressedin, both recirculation fans run provided there is no overheat condition.

Both recirculation fans are switched off.

FANS RESET PUSHBUTTON

The Fan Reset pushbutton indicates an overheat of at least one fan controlledby the ventilation controller and enables the crew to reset it.

There is a recirculation fan overheat.

When the P/B is pressed, the fan restarts and the fault

light goes off provided the overheat condition hasdisappeared.

FAN INDICATION

The fan indication is not displayed in normal operation or when the fan statedata is not available.

The respective recirculation fan is faulty, or the CAB

FANS pushbutton switch is selected OFF or theventilation controller is faulty.


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AFT GALLEY AREA HEATING SYSTEM

PRESENTATION

General

Power Supply Logic

Control And IndicatingThermal Protection

DATE : APR 1999 Page 1 F21EA01Page 63

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GENERAL

The aft galley-area heating system increases the temperature of the air in theaft galley area.The air comes from the cabin air supply area and flows through a heaterlocated in the upper part of the aft galley.

POWER SUPPLY LOGIC

The heater is powered by the 115 VAC service bus.The 115 VAC is available only if at least one air conditioning pack operatesand galley power is "ON", provided the cargo loading is not operating.

CONTROL AND INDICATINGAs soon as all the heater supply initial conditions are fulfilled, the "AVAIL"indication illuminates on the aft GALLEY AREA HEATING panel meaning

that the heater is available.

Two temperature settings (low or high) can be selected through two p/bswitches located on the GALLEY AREA HEATING panel.

The "LOW ON" selection powers one heating element while the "HIGH ON"selection powers the three elements.

THERMAL PROTECTION

In case of heater overheat the thermal switch opens. This causes the heatersupply to be interrupted.The "AVAIL" indication on the GALLEY AREA HEATING panel willextinguish as long as the overheat exits.


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INTERFACEGROUND REFRIGERATION SYSTEM (OPTIONAL)




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INTERFACE

RECIRCULATION SYSTEM

The recirculation fans of the cockpit and cabin ventilation system arealso used as blower fans for the avionics equipment ventilation.

The recirculation fans are controlled, via the ventilation controller,from the VENTILATION panel.

The recirculation valves are normally open.They close when both packs are OFF to keep the avionics equipment

sufficiently ventilated.

The valves are controlled and monitored by the ventilation controller.

AVIONICS VENTILATION SYSTEM

GENERAL

Vent air is supplied either from the recirculation system or from thepacks.Air is extracted by means of an extraction fan.Air is discharged either overboard through the overboard valve or

under the cargo floor through the underfloor valve.

When the overboard valve is open, the underfloor valve is closed andvice versa.

A ground horn sounds in case of abnormal operation on ground.

The cooling capacity is monitored by two sensors (Cooling EffectDetector and pressure switch).

All avionics ventilation system components are controlled andmonitored by the Avionics Equipment Ventilation Computer (AEVC).

The ground refrigeration system cools the air of the avionicsventilation system.The Ground Refrigeration Unit (GRU) is a freon gas closed-cyclerefrigeration system which operates on a compression expansionprinciple. The GRU is designed to meet the new environmental

requirements.

It operates when the aircraft is on ground with all engines and bothpacks stopped, ditching not selected, GND COOL pushbutton switch

on AUTO and the recirculated air temperature higher than 27C.

Control and monitoring are performed by the Avionics EquipmentVentilation Computer.

The ground/flight signal comes from LGCIU 1 and 2.The engines 1 and 2 stopped signal comes from the oil low pressureswitches (1 and 2). The ditching signal comes from the PRESS panel.

When the system operates, the fan runs and the heat accumulated in

the condenser is extracted through the skin air valve.

EXTRACTION FAN

The extraction fan draws the air from the avionics equipment.It is monitored by the Avionics Equipment Ventilation Computer.

It runs continuously whenever electrical power is available.

DATE : APR 1999 Page 2 F21VA04Page 68

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OVERBOARD VALVE PRESSURE SWITCH




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In AUTO mode, air is extracted through the overboard valve providedthe aircraft is on ground and engines 1 and 2 stopped.

The overboard valve will receive a signal to close if DITCHING isselected on the PRESS panel.

Manual OVRD selection on EXTRACT pushbutton switch controlspartial opening of the overboard valve.In flight it will ensure equipment ventilation by differential pressure.

This manual selection is done in case of low flow detection or avionicssmoke procedure.

UNDERFLOOR VALVE

The underfloor valve is closed and the overboard valve is open,provided the EXTRACT pushbutton switch is in AUTO position,

engines 1 and 2 stopped, and the aircraft on ground.

In flight, the extracted air is discharged below the forward cargocompartment floor via the underfloor valve, the overboard valve being

closed.

If the OVRD position is selected, the underfloor valve closes to allowthe air to be sent overboard via the overboard valve.

COOLING EFFECT DETECTOR (CED)

The Cooling Effect Detector provides a warning signal when the

cooling capacity of the recirculated air is insufficient.

The Pressure Switch signals a low pressure to the Avionics EquipmentVentilation Computer in order to detect any low flow.

In case of low flow, the FAULT light on the EXTRACT pushbuttonswitch comes on and an electrical signal is sent to the ECAM and

ground horn.

AIR CONDITIONING BAY VENTILATION

TURBOFAN AND SUPPLY VALVE

The air conditioning bay is ventilated by external air to preventstructural damage. With the aircraft on ground, the turbofan boosts airinto the ventilation circuit.The turbofan is driven as soon as it receives air from the cross bleed

duct via the supply valve.

In flight, the supply valve being closed, ventilation is performed byram air from NACA air inlet.

When the turbofan is in windmilling configuration, the overflowbypasses the turbofan through the check valve.

PRESSURE SWITCH

A pressure switch signals an abnormal ventilation to the AvionicsEquipment Ventilation Computer.


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SELF EXAMINATION




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What is the position of the avionics ventilation valves on ground,engines 1 and 2 stopped and in AUTO mode ?

A - Underfloor valve closed - Overboard valve open.B - Underfloor valve open - Overboard valve closed.C - Underfloor valve closed - Overboard valve partially open.

What is the position of the avionics ventilation valves in flight in AUTOmode ?

A - Underfloor valve open - Overboard valve closed.B - Underfloor valve closed - Overboard valve open.C - Underfloor valve closed - Overboard valve partially open.

What is the position of the avionics ventilation valves when OVRD is

selected on the EXTRACT pushbutton ?

A - Underfloor valve open - Overboard valve partially open.B - Underfloor valve closed - Overboard valve open.C - Underfloor valve closed - Overboard valve partially open.

On ground, what is the correct configuration for the air conditioning bayventilation system ?

A - Supply valve open - Turbofan operating.B - Supply valve closed - Turbofan in windmilling.C - Supply valve open - Turbofan stopped.


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AVIONICS / AIR CONDITIONING BAY

VENTILATION :SYSTEM CONTROLS AND INDICATING

Extract P/B

OVBD ValveVent

DATE : OCT 1997 Page 1 F21VB01Page 73

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STUDENT NOTES




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DATE : OCT 1997 Page 4 F21VB01Page 76

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AVIONICS EQUIPMENT GROUND COOLING :


Ground Cooling P/B

Skin ValveGround Cooling Indication

DATE : NOV 1997 Page 1 F21VO01Page 77

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GROUND COOLING P/B




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The ground cooling system is automatically controlled by the avionicsequipment ventilation computer provided that the GROUND COOLpushbutton switch is set to AUTO.In case of system malfunction, the GROUND COOL pushbutton switch mustbe set to OFF.

A/C on ground, engines stopped : Skin valve opens.

Skin valve open and recirculation air temperature >27C (80F): fan andcompressor run.FAULT : in amber : Ground Refrigeration Unit (GRU), fan or valve failure.OFF : in white : the skin valve closes , the fan and the GRU stop.


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SKIN VALVE

The skin al e position indication is normall green It becomes amber in




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The skin valve position indication is normally green. It becomes amber incase of abnormal position.

GROUND COOLING INDICATION

The GROUND COOL indication is normally white. It becomes amber whenthe skin valve position indication is displayed amber or when the groundcooling system is faulty.GND COOL : white : Normal operation or when the ground cooling system

status is not available.GND COOL : amber : When the skin air valve is displayed amber or whenthe ground cooling system is faulty.


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FORWARD CARGO COMPARTMENT

VENTILATION / TEMPERATURE CONTROL :SYSTEM PRESENTATION

General

Inlet Isolation ValvesTrim Air ValveCold Air Valve

Outlet Isolation ValveExtraction FanTemp SensorSelf Examination

DATE : OCT 1997 Page 1 F21FA02Page 81

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GENERAL

The forward cargo compartment is ventilated by cabin air cooled by cold airf k 2 d h t d b h t i f t i i l ti l 1




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The forward cargo compartment is ventilated by cabin air, cooled by cold airfrom pack 2 and heated by hot air from trim air pressure regulating valve 1.


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SELF EXAMINATION




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What is the cold air source for cargo cooling ?

A - Pack 1.

B - Pack 2.C - Mixer unit.

When do the isolation valves close ?

A - In case of Forward cargo smoke warning.B - In case of extraction fan failed.

C - In case of both packs failed.

Which valve closes in case of duct overheat detection ?

A - Outlet isolation valve.

B - Cold air valve.C - Cargo trim air valve.


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FORWARD CARGO COMPARTMENT

VENTILATION / TEMPERATURE CONTROL :SYSTEM CONTROLS AND INDICATING

Isolation Valves P/BCooling SelectorTemperature SelectorFan Reset P/B

Trim Air ValveCold AirCold Air ValveDuct Temperature

Compartment Temperature

DATE : MAY 1999 Page 1 F21FB10Page 87

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As these systems are optional, the indications concerning the FWD cargocompartment temperature control system are displayed on the ECAM CONDand CRUISE pages only if the option is fitted on the aircraft and the

ISOLATION VALVES P/B

When the isolation valves pushbutton switch is pressed in, theisolation valves open and the extraction fan runs provided there is no




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ventilation controller pinprogrammed.

These indications are displayed on ECAM only if the BULK CARGO

HEATING system is installed.

smoke detection in the FWD cargo compartment.

FAULT comes on associated with an ECAM caution when

either the inlet or outlet isolation valve is not in agreement withthe selected position.

The pushbutton is released out. The valves close and the

extraction fan stops.

COOLING SELECTOR

The COOLING selector controls the cold air valve via the ventilationcontroller to adjust the quantity of cold air supplied by the mixer unit.The COOLING selector has three positions.

Cold air valve partially open.

Cold air valvefully closed.

Cold air valvefully open.


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TEMPERATURE SELECTOR

The forward cargo compartment temperature can be adjusted with thetemperature rotary selector

TRIM AIR VALVE

The forward cargo trim air valve indication is normally displayed ingreen on the ECAM COND page.




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temperature rotary selector.

The temperature regulation is performed by changing the FWD cargoTrim Air Valve position.

FAN RESET P/B

The Fan Reset pushbutton indicates an overheat of at least one fan

controlled by the ventilation controller and enables the crew to resetit.

There is an extraction fan overheat.

When the P/B is pressed, the fan restarts and the fault light goesoff provided the overheat condition has disappeared.

Normal operation.C (COLD) = Valve closed.

H (HOT) = Valve open.

The trim air valve has failed.

The trim air valve position data is not available.

COLD AIR

The cold air duct indication is normally displayed in green on theECAM COND page.

The duct is green when the two flow control valves are notfully closed or when their position is not available.

It becomes amber when one of the two flow control valves arefully closed.


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COLD AIR VALVE

The cold air valve indication is normally displayed in green on theECAM COND page.

COMPARTMENT TEMPERATURE

The forward cargo compartment temperature is always displayed ingreen on the ECAM COND page.




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Valve partially open.

Valve fully closed.

Valve fully open.

Valve abnormal fully closed.

Valve abnormally fully open.

Valve abnormally partially open or in transit position.

Valve position data not available.

DUCT TEMPERATUREThe forward cargo duct temperature is normally displayed in green onthe ECAM COND page.

UDTS = Upper Duct Temp. SensorLDTS = Lower Duct Temp. Sensor

The duct temperature is lower than 88C (190F).

The duct temperature is greater than 88C (190F).

The duct temperature data is not available.

CTS = Compartment Temp. Sensor

Normal configuration.Temperature varies by steps of 1C (2F).

The FWD cargo compartment temperature data is not available.

The FWD cargo compartment temperature is also displayed in greenon the ECAM CRUISE page.

Normal configuration.Temperature varies by steps of 1C (2F).

The FWD cargo compartment temperature data is not available.


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AFT CARGO COMPARTMENT VENTILATION :




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AFT CARGO COMPARTMENT VENTILATION :

SYSTEM PRESENTATION

General

Inlet Isolation ValvesExtraction Fan

Outlet Isolation ValveSelf Examination

DATE : OCT 1997 Page 1 F21AA02Page 93

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GENERAL

The aft cargo compartment is ventilated with cabin air.

INLET ISOLATION VALVES




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INLET ISOLATION VALVES

The inlet isolation valves allow cabin air, from openings in the cabin floor,

to enter the compartment.Control is achieved, via the ventilation controller, by the ISOL VALVESpushbutton switch.

To isolate the cargo compartment, they close if DITCHING is selected or if

smoke is detected in the AFT or Bulk cargo compartment.

EXTRACTION FAN

The extraction fan extracts the air from the cargo compartment.

The extraction fan operates provided at least one inlet isolation valve is open

and the outlet isolation valve is open.It stops if smoke is detected in the AFT or Bulk cargo compartment.

OUTLET ISOLATION VALVE

The outlet isolation valve allows the air to be ducted overboard through theAFT outflow valve.Control is achieved, via the ventilation controller, by the ISOL VALVES

pushbutton switch.

To isolate the cargo compartment, it closes if DITCHING is selected or ifsmoke is detected in the AFT or Bulk cargo compartment.


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SELF EXAMINATION





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A - In case of AFT cargo smoke warning.

B - In case of extraction fan failed.C - In case of both packs OFF.


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ISOLATION VALVES P/B

When the isolation valve pushbutton switch is pressed, the isolation valves

open and the extraction fan runs provided there is no smoke detection in theaft cargo compartment.




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FAULT (in amber) : comes on associated with ECAM caution when either

inlet or outlet valve is not in agreement with the selected position.

OFF (in white) : the isolation valves pushbutton switch released out, thevalves close and the extraction fan stops.

FANS RESET P/B

The FAN RESET pushbutton switch indicates an overheat of at least one fanof the air conditioning system and enables the crew to reset it.

If there is a fan overheat, a FAULT light (in amber) on the OVHT CONDFANS RESET pushbutton switch comes on and the extraction fan stops.When this reset pushbutton switch is pressed, the extraction fan is reset bymeans of the ventilation controller and the fault light goes off.

DATE : DEC 1997 Page 2 F21AB02Page 98

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STUDENT NOTES :




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BULK CARGO COMPARTMENT

VENTILATION / HEATING :




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VENTILATION / HEATING :SYSTEM PRESENTATION

GeneralInlet Isolation Valve

Extraction FanOutlet Isolation Valve

Fan Heater (Optional)Duct and Compartment Temperature Sensors (Optional)Self Examination

DATE : OCT 1997 Page 1 F21BA10Page 101

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GENERAL

The bulk cargo compartment is ventilated with cabin air by means of an

extraction fan. An optional heating system may be fitted on the aircraft.Heating is then performed by an electrical fan heater.

INLET ISOLATION VALVE

FAN HEATER (OPTIONAL)

The optional fan heater is controlled by the Ventilation Controller according

to the cockpit panel selection. It operates provided the inlet and the outletisolation valves are open.It automatically stops in case of Bulk cargo door open (PSCU), smoke




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INLET ISOLATION VALVE

The inlet isolation valve allows cabin air to enter the Bulk cargo compartmentthrough an elbow duct . Control is achieved, via the ventilation controller, bythe ISOL VALVES pushbutton switch.To isolate the cargo compartment, it closes if DITCHING is selected or if

smoke is detected in the Bulk or AFT cargo compartment.

EXTRACTION FAN

The extraction fan extracts the compartment air.

The extraction fan operates provided the isolation valves are open.It stops if smoke is detected in the Bulk or AFT cargo compartment.

OUTLET ISOLATION VALVE

The outlet isolation valve allows air to be sent overboard through the AFToutflow valve. Control is achieved, via the ventilation controller, by the ISOLVALVES pushbutton switch.

To isolate the cargo compartment, it closes if ditching is selected or if smokeis detected in the Bulk or AFT cargo compartment.

detected in the AFT or Bulk cargo compartment (SDCU) or duct or fan

overheat detection.

DUCT AND COMPARTMENT TEMPERATURE SENSORS

(OPTIONAL)

If the optional heating system is fitted on the aircraft, temperature sensors are

installed for temperature control and duct temperature overheat detection.


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SELF EXAMINATION


A If B lk k i d t t d




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A - If Bulk cargo smoke is detected.

B - If the extraction fan fails.C - In case of both packs OFF.

When does the optional fan heater automatically stop ?

A - When the Bulk cargo door is open.B - When the AFT outflow valve is open.

C - When a passenger door is open.


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BULK CARGO COMPARTMENT

VENTILATION / HEATING :




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Isol Valves PushbuttonFans Reset Pushbutton

Heating P/BTemperature Selector

Fan Heater IndicationDuct TemperatureZone Temperature

DATE : OCT 1997 Page 1 F21BB10Page 105

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The indications concerning the bulk cargo compartment temperature controlsystem are displayed on the ECAM COND and CRUISE pages only if the

option is fitted on the aircraft and the ventilation controller pinprogrammed.

These indications are displayed on ECAM only if the FWD CARGO TEMPCONTROL is installed




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CONTROL is installed.


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ISOL VALVES PUSHBUTTON

When the isolation valves pushbutton switch is pressed in, the isolation

valves open and the extraction fan runs provided there is no smoke detectionin the bulk cargo compartment.

HEATING P/B

When the heating pushbutton switch is pressed in, the fan heater is activated

provided the isolation valves are open.




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FAULT comes on associated with an ECAM cautionwhen either the inlet or outlet isolation valve is notin agreement with the selected position.

The pushbutton is released out. The valves close andthe extraction fan stops.

FANS RESET PUSHBUTTON

The Fan Reset pushbutton indicates an overheat of at least one fan controlled

by the ventilation controller and enables the crew to reset it.

There is an extraction fan or fan heater fan partoverheat.

When the P/B is pressed, the fan restarts and the faultlight goes off provided the overheat condition hasdisappeared.

The duct temperature is greater than 88C(190F). The overheat condition can be resetprovided the duct temperature is lower than70C (158F).

The heating pushbutton is released out and thefan heater stopped.

TEMPERATURE SELECTOR

The bulk cargo compartment temperature can be adjusted with the

temperature rotary selector.

The temperature regulation is performed by changing

the fan heater power supply controlled by theventilator controller.


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FAN HEATER INDICATION

The arrow representing the bulk cargo fan heater performance is normally

displayed in green on the ECAM COND page.

C (COLD) = minimum performance.H (HOT) = maximum performance.

ZONE TEMPERATURE

The bulk cargo compartment temperature is always displayed in green on the

ECAM COND page.

Normal configuration. Temperature varies by steps




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The fan heater has failed.

The fan heater performance data is not available.

DUCT TEMPERATURE

The bulk cargo duct temperature is normally displayed in green on the ECAM

COND page.

The duct temperature is lower than 88C (190F).

The duct temperature is greater than 88C (190F).

The duct temperature data is not available.

of 1C (2F).

The bulk cargo compartment temperature data is notavailable.

The bulk cargo compartment temperature is also displayed in green on the

ECAM CRUISE page.

Normal configuration. Temperature varies by steps

of 1C (2F).

The bulk cargo compartment temperature data is not

available.


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PRESSURIZATION :

SYSTEM DESIGN PHILOSOPHY




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General

Design Philosophy

DATE : DEC 1997 Page 1 F21PA02Page 111

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GENERAL

The pressurization system ensures a cabin altitude safe and compatible with

crew and passenger comfort.Pressurization is performed by controlling the amount of air dischargedoverboard through two outflow valves.

DESIGN PHILOSOPHY




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DESIGN PHILOSOPHY

The system has two identical and independent automatic controllers.Only one controller operates at a time, the other is in active stand-by.

In normal condition, the system operation is fully automatic.The operation of the automatic cabin pressure control depends onpre-programmed control laws and information from the ADIRUs.The automatic cabin pressure control is achieved from internal schedules, or

external schedules if the FMGES inputs are available, such as top of climb.

The CABIN PRESS panel enables manual cabin pressure control in case offailure of both automatic systems. The FWD and AFT valves may be

simultaneously or independently manually controlled.

A mixed mode is available mainly in case of cabin compartment smoke

evacuation. In mixed mode, one outflow valve may be manually controlledwhereas the other one remains under automatic control (active cabin pressurecontroller).

Two safety valves are installed on the aft pressure bulkhead to prevent

excessive positive or negative differential pressure.Due to the large volume of the fuselage, a negative pressure relief valveassists the safety valves to prevent negative differential pressure.


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SELF EXAMINATION

What is the number of outflow valves, safety valves and negative pressurerelief valves ?

A - One outflow valve two safety valves and one negative




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A One outflow valve, two safety valves and one negativepressure relief valve.B - Two outflow valves, two safety valves and one negativepressure relief valve.

C - Two outflow valves, one safety valve and one negativepressure relief valve.

What is the purpose of the negative pressure relief valve ?

A - To avoid over-temperature.B - To prevent negative differential pressure.

C - To prevent positive differential pressure.

What is the purpose of the safety valves ?

A - To avoid negative differential pressure.B - To replace the outflow valves.C - To prevent excessive differential pressure.


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PRESSURIZATION :





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Active Valve Selector

MAN V/S Toggle SwitchMODE SEL P/B SwitchLanding Field Elevation SelectorDitching P/B Switch

CPC Reset Switches

DATE : DEC 1997 Page 1 F21PC10Page 115

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STUDENT NOTES




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PRESSURIZATION: FLIGHT PROFILE

Ground




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GroundTake-off

ClimbCruiseDescent

Ground

DATE : MAR 1999 Page 1 F21PF09Page 119

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SELF EXAMINATION

What is the position of the outflow valves in ground mode?

A - Half open.

B - Fully closed.C - Fully open.




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y p


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STUDENT NOTES




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PRESSURIZATION:

ECAM PAGE PRESENTATION




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Packs

Outflow ValvesSafety ValvesActive System

ManLFE Selection ModeLFE Value

Cabin PCabin V/SCabin Altitude

DATE : DEC 1997 Page 1 F21PG10Page 125

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OUTFLOW VALVES

The Outflow Valve indication gives the respective outflow valve position.

The needle is normally green and the FWD and AFT indications white.

: The valve is opened more than 95% during flight or

it is determined faulty (only in auto press mode).

ECAM CAB PRESS PAGE

WHITE LETTERS

GREEN NEEDLE

: These indications are displayed on ECAM

only if the optional ground cooling system isfitted on the aicraft.




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PACKS

The Pack indication gives the respective flow control valve status.

ECAM CRUISE PAGE

GREEN LETTERS

AMBER TRIANGLE

AND LETTERS

: The respective flow control valve is fully closed.

GREEN TRIANGLE

:The respective flow control valve is not fully closed.

AMBER CROSSES

WHITE LETTERS

: The respective flow control valve

position data is not available.

AMBER LETTERS

AND NEEDLE

WHITE LETTERS

AMBER CROSSES

: The valve position data is not available.

: These indications are displayed on ECAM

only if the optional FWD and BULK cargo

temperature control systems are fitted on the

aircraft.


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SAFETY VALVES

The safety valve indication gives the safety valve status. The position signals

are provided to the SDAC by a discrete signal from the valves sensor.

ACTIVE SYSTEM

It indicates which system is active and what is the system status.

Only one system is active at a time.When both systems are faulty, the "FAULT" light on the MODESEL pushbutton comes on.

: System 1 is active and not faulty.

: Both safety valves are fully closed.




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MAN

The MAN indication appears in green above the outflow valve indication

when its corresponding valve is manually controlled.MAN indication is not displayed otherwise.

AMBER

GREEN

AMBER

: System 1 is faulty.

: System status data is not available.

GREEN

: The corresponding outflow valve is manually controlled.

WHITE LETTERS

AMBER CROSSES

: Both safety valves position data are not available

or one is not available and the other valve is closed.

AMBER LETTERS

AND NEEDLE

: At least one of the safety valves is not fully closed.

GREEN NEEDLE

WHITE LETTERS


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LFE SELECTION MODE

It indicates if the Landing Field Elevation data comes either from the FMGESor the landing elevation selector. It also provides the LFE source status.Nothing is displayed when the LDG ELEV selector is completely faulty orduring manual pressure regulation.The LFE selection indication is also displayed on the CRUISE ECAM page.

LFE VALUE

The Landing Field Elevation value is provided by the FMGES in normalcondition.Nothing is displayed in manual pressure regulation.The LFE value indication is also displayed on the CRUISE ECAM page.

: LFE data is available.




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GREEN

: LFE data from FMGES is valid and

LDG ELEV selector set to AUTO.

AMBER

: LFE data from FMGES invalid and

LDG ELEV selector set to AUTO.

GREEN

: LDG ELEV selector set to a value

AMBER

: At least one parameter from CPCs

automatic part is not available.

GREEN

(From FMGES or LDG ELEV selector).

AMBER

: LFE data is not available.

GREEN ZERO

AND CYAN

LETTERS

: LFE from FMGES is invalid, (AUTO in amber)

or LDG ELEV selector is completely faulty.


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CABIN PThe needle and the cabin differential pressure value are normally displayed

in green. The

P value can vary from -9.9 to 31.9 by steps of 0.1 PSI, but

the needle can only vary from -0.5 to 10.5 PSI.

The cabin differential pressure is also displayed on the CRUISE ECAM page.

: -0.2 P8.85 PSIDuring final approach the P value and the needle

: -0.2 P 8.85 PSIDuring final approach, the P value and theneedle pulse in green if 1.5 < P < 8.85 PSI.




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GREEN NEEDLE

During final approach, the P value and the needlepulse in green if 1.5 8.85 PSI.

AMBER NEEDLE

AND VALUE

: P data is not available.

AMBER

CROSSES

GREEN The pulsing stops when the P drops below 1 PSI.

AMBER

: P < -0.2 PSI orP > 8.85 PSI.

AMBER

:P data is not available.


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CABIN V/S

on CAB PRESS ECAM page and CRUISE ECAM page during manual

press regulation

The needle and the cabin vertical speed value are normally displayed ingreen. The CAB V/S value can vary from -6350 to 6350 by steps of 50 ft/mn.The needle can only vary from -2250 to 2250 ft/mn. The needle disappears

and the cabin vertical speed value is replaced by amber crosses when thecabin vertical speed data is not available.

on DOOR/OXY ECAM page and CRUISE ECAM page during autopress regulation

GREEN

: 25 CAB V/S 1800 ft/mn.It pulses green when CAB V/S > 1800 ft/mn.

It stops pulsing when the CAB V/S value

drops below 1600 ft/mn.

1800 CAB V/S 25 f /




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Nothing is displayed when -25 < CAB V/S < 25 ft/mn or the CAB V/S datais not available.

The cabin vertical speed value is normally displayed in green. It can varyfrom 0 to 6350 by steps of 50 ft/mn.

The cabin vertical speed indication on the DOOR/OXY ECAM page is

displayed in flight from lift up to touch down only.

GREEN NEEDLE

: The CAB V/S value and the needle pulse in green if

CAB V/S < -1800 ft/mn or CAB V/S > 1800 ft/mn.

The pulsing stops when the value drops below

1600 ft/mn or goes above -1600 ft/mn.

AMBER

CROSSES

: CAB V/S data is not available

GREEN

: -1800 CAB V/S -25 ft/mn.It pulses green when CAB V/S < -1800 ft/mn.

It stops pulsing when the CAB V/S value

goes above -1600 ft/mn.

GREEN

: The CAB V/S value pulses in green when

CAB V/S < -1800 ft/mn or CAB V/S > 1800 ft/mn.

It stops pulsing when the value drops

below 1600 ft/mn or goes above -1600 ft/mn.

AMBER: CAB V/S data is not available.


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STUDENT NOTES




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Documents

TTM GEN FAM 21