A320-Air Conditioning and Pressurization

8/3/2019 A320-Air Conditioning and Pressurization

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AIRBeR TR.AINING A IR COND / PRESS / VENT P 1~'~n~~T~R

1.21 .00CONTENTS SEQ 001 I REV 30FLIGHT CREW OPERATING MANUAL

21 .00 CONTENTS21.10 A IR COND IT ION ING

- G ENERAL 1- M A IN COMPONENTS 3- TEM PERATUR E AND FLOW REGULAT IO N 6- SYSTEM O PER AT IO N UNDER FA ILURE COND IT IO N 8- CO NTRO LS AND IN D IC ATORS 10- W ARN INGS AND CAUT IONS 18

21 .20 PRESSUR IZA T ION- G ENERAL 1- M A IN COMPONENTS 3- SYSTEM O PER AT IO N 4- CO NTRO LS AND IN D IC ATORS 8- W ARN INGS AND CAUT IONS 14

21 .30 VENT ILAT ION- G ENERAL 1- AV IO N IC S VENT ILAT IO N 2- AV IO N IC S GROUND COO L ING


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AIRBeR TR.AINING A IR COND /PRESSNENT P 1~'~n~~T~R

1 . 2 1 . 1 0A IR C O N D IT IO N IN G S E Q 0 0 1 I R E V 2 3FLIGHT CREW OPERATING MANUAL

I GENERAL IT he a ir co nd itio nin g s ys tem ope ra tio n is fu lly a utoma tic.I t p ro vide s a con tin ual re newal of air a nd maintains a co nsta nt se le cted tempe ra ture in th ethree fo llow ing zones : C O C KP IT ,F W D C A B IN , A F T C A B IN which are independentlycontrolled.T he air is supplied by the pneum atic system , via :- two pack flow contro l va lves- two packs- the m ixing unit, which m ixes the air com ing from the cabin and from the packs.I t is then distributed to the cockpit and the cabin.T h e tempe ra ture reg ulation is o ptim ized th ro ug h the hot air pressure re gula ting va lve an dthe trim air valves which add hot a ir tapped upstream of the packs to the m ixing unit air.In an em ergency, a ram air inlet can provide am bient a ir to the m ixing unit.T he tem perature regulation is controlled by a zone controller and tw o pack contro llers.F lig ht de ck a nd cab in tempe ra ture can be selecte d from the A I R CO ND p an el in th e cockpit.L ow pressure air is supplied to the m ixing unit by a ground connection.

for training only STD 1.3.1SIMU F.P.S.3llP


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C A B F A NS

C A B I NAI R-

P A C K 1C O N T R O L L E R

A R Be R T R. A N N G

~~n~~T~R

A IR C O ND /P R E SS NE N T 1 .2 1 .1 0 P 2A I R C O N D IT I O NI N G S EQ 0 01 I R EV 23FLGHT CREW OPERATNG MANUAL

C P K T A F TW D

P A C K P A C K2

C O N D T E M P : cFAN AL1N MODEFAN

C A B I NA IR- N O T E : A N O P T I O N A L S O P E R M I T S T O- - D I S P L A Y T H E A B O V E T E M P E R A T U R EIN OF

P A C K 2C O N T R O L L E R

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SIMU F.P.S.3lJP for training only STD 1.3.1


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AIRBeR TR.AINING A IR C ON D/P R ES SN E NT P 3~'~n~~T~R

1 .21 .10A IR C O N D IT IO N IN G SEQ 001 I R EV 23FLIGHT CREW OPERATING MANUAL

I M AIN CO MPO NEN TS IA IR COND IT ION ING PACKT he tw o packs operate autom atically and independently of each other. P a ck operation iscon tro lle d by pack con tro lle r s igna ls .W arm pre-conditioned bleed air enters the cooling path via the pack valve and is ductedto the prim ary heat exchanger.T hen the cooled bleed air enters the com pressor section of the air-cycle m achine and iscompre ssed to a h ig he r p re ss ure and tempera tu re .I t is cooled again in the main heat exchanger and enters the turbine section, where itexpands and in expanding generates pow er to drive the com pressor and cooling air fan.T h e remova l of en ergy d uring this process redu ce s the tempe ra ture of the a ir, resultin g inve ry low a ir tempe ra tu re at turbine discha rg e. li,';II~I#.]A w ater separator system dries the air before it en ters the turbine section .



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AIRBeR TR.AINING A IR COND /PRESSNENT 1.21.10 P 4~'~n~~T~R A IR CONDIT ION ING SEQ 105 I REV 28FLIGHT CREW OPERATING MANUALP AC K S CH EM ATIC (S IM PL IF IE D)

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A IR BLEED

H OT A IRPRESS REG .

VALVE

RAM A IR INLET FLAP

PA CK F LO W C ON TR OLVALVE

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ANT I IC E VALVE

for training only STD 1.3.1SIMU F.P.S.3lIP


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1 . 2 1 . 1 0A IR C O N O I T IO N IN G S E Q 1 0 0 I R E V 3 3FLIGHT CREW OPERATING MANUAL

PACK FLOW CONTROL VALVET h is va lv e is p neumatica lly -o pe ra te d and e le ctrica lly- co ntro lle d. I t re gu la te s th e a ir flow inacco rd an ce w ith sig nals receive d from th e p ack co ntro lle r.In the absence of air pressure, a spring keeps the valve closed.T h e va lve clo se s automatica lly in ca se o f p ack o ve rh ea tin g, e ng in e s ta rtin g, o r o pe ra tio n o fth e fire or ditch in g pushb utton.T he valve is controlled from the A IR C O N O panel.

RAM A IRA n em ergency ram air in let ventila tes the cockpit and cabin to rem ove sm oke, or if bothpacks fa il.T he em ergency ram air inlet valve is controlled by the R A M A IR pushbutton on the A IRCO NO pa ne l.T h is pushbutton opens the ram air valve, provided that ditch ing is not selected.R W hen the R A M A IR pushbutton is O N : T he outflow valve opens about 5 0 % , prov ided tha t

R it is under automatic control and L ::"Pis less than one psi. T he outflow valve does notR autom atica lly open if it is under m anual contro l, even if L ::"Pis less than one psi. I f L ::"Pis

greater than one psi, the check valve located dow nstream the ram air door w ill not open,even if the ram air door has been selected open. N o airflow will then be supplied.M IXER UN ITT his unit m ixes cold fresh air from the packs w ith the cabin air being recirculated throughrecircu la tio n fa ns. T h e m ixe r unit is also co nne cte d to th e emerg en cy ram a ir in let an d th elow p re ssu re g ro und in le ts .

H OT-A IR P RE SSU RE -R EG ULA TIN G VA LV EST his valve regulates the pressure of hot air, tapped upstream of the packs.I t is pneuma tic ally -ope ra ted and e le ctric ally -c on tro lle d from the HO T A IR pushbutton on theA IR C O N O panel. In the absence of a ir, a spring keeps the valve closed.T h e valve closes au tomatica lly, if :- T he duct overheats, or- T he cockpit trim air valve fails, or- B oth cabin trim air valves fail.T h e ho t- air pressu re -reg ula ting valve remains o pe ra tive, even if eith er th e fo rward or a ftca bin trim a ir va lve fails.

TR IM A IR VALVEST hese v alv es a re e le ctric ally- co ntro lle d b y th e zone contro lle r. A trim a ir v alv e, a sso cia te dw ith each zone, adjusts the tem perature by adding hot air.



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AIRBeR TR.AINING A IR COND/PRESSNENT 1 .2 1 .1 0 P 6~'~n~~T~R A IR C O N D IT IO N IN G S E Q 1 0 5 I R E V 2 8FLIGHT CREW OPERATING MANUAL

I TEMPERATURE AND FLOW REGULATION IT emperature regulation is autom atic and controlled by one zone controller and tw o packcontrollers.

PACK CONTRO LL ERE a ch p ack co ntro lle r re gula te s th e tempera tu re of its a ssocia te d p ack, in a cco rd an ce w itha dem and signal from the zone controller, by m odulating the bypass valve and the ram airin le t flaps.T h e ram a ir in le t fla ps clo se d urin g ta ke off a nd lan din g to a vo id in gestio n o f fo re ig n matter.Note: During takeoff, the ram air inlet flaps close when T O . power is set and-- the main landing gear struts are compressed.

During landing they close as soon as the main landing gear struts are compressed,as long as speed is at or above 70 knots.They open 20 seconds after the speed drops below 70 knots.

T he pack controllers also regulate flow by m odulating the associated pack flow controlvalve.

ZO NE CON TROLLE RPACK FLOW CONTROLT he crew can use the P AC K F LO W selector to adjust the pack flow for the number ofp as sengers and fo r e xte rnal c onditio ns .W hatever the crew selects, the system delivers high flow for any of the follow ingc irc ums tances :- in single-pack operation,- when the A PU is supplying bleed air.T he system delivers norm al flow if the crew selects L O flow and the tem perature dem andcanno t be satis fied.Eng ine p ressu re dem andW hen the cooling dem and in one zone cannot be satisfied, if the bleed pressure is too low ,the zone controller sends a pressure dem and signal to both E n gine Interface U n its ( E IU ) toincrease the m inim um idle and to raise the bleed pressure.APU flow dem andW hen the A P U bleed valve is open, the zone controller signals the A P U 's E lectronic C o ntrolB ox (E C B ) to increase the A P U flow output w hen any zone tem perature dem and cannot besatisfied.

SIMU F.P.S.3lIP for training only STD 1.3.1


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TE MPE RA TU RE R EG ULA TIO NT he zone contro ller regulates the tem perature of the tw o cabin zones and the cockpit.

B AS IC TEM PERATURE REG ULATIO NT h e fligh t crew u se s the temperatu re sele ctors on th e air con ditionin g p an el in the co ckpitto se le ct th e re fe re nce tempe ra tu re s. T h e zone contro lle r compu te s a tempe ra tu re demandfrom the se lecte d tempe ra tu re and th e actu al temperatu re .T h e a ctua l temperature is measured by sen so rs:- in the cockpit, for the cockpit zone- in the lavatory extraction circu it and galley ventila tion system , for the cabin.A signal corresponding to the lowest demanded zone temperature goes to the packco ntrolle r, w hich th en makes bo th p acks p ro du ce th e req uire d ou tlet temperature.

O PT IM IZED TEM PERA TURE R EG ULATIO NT he zone contro ller optim izes the tem perature by action on the trim air valves.T he tem perature selection range is from 1 8 C (6 4 F ) to 3 0 C (8 6 F ).



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AIRBeR TR.AINING A IR COND /PRESSNENT 1 .2 1 .1 0 P 8~'~n~~T~R A IR C O N D IT IO N IN G S E Q 0 0 1 I R E V 2 4FLIGHT CREW OPERATING MANUAL

I SYSTEM OPERAT ION UNDER FA ILURE COND IT ION IE ach controller consists of a prim ary channel that is norm ally in control and a secondarychannel that acts as a backup if the prim ary channel fa ils.

Z ON E CON TROL LE RPR IMARY CHANNEL FA ILURET h e se co nd ary ch ann el o pe ra te s a s b acku p.T h e flow se ttin g fu nction a nd o ptim ize d tempera tu re re gu la tio n a re no t a va ila ble . HO T A I Rand T R IM A IR valves close.T he zones are controlled to 2 4 C (7 6 F ) (backup regulation). P ack 1 controls the cockpittem perature. P ack 2 controls the F W D and A F T cabin tem peratures.A L T N M O D E appears on the E C A M ( E lectronic C e ntralized A ircraft M onitoring) C O N D page.

SECONDARY CHANNEL FA ILURET h is has no effect on zone tem perature regulation.B ackup m ode is lost.

PR IMARY AND SECONDARY CHANNEL FA ILUREOp tim ize d a nd b acku p tempe ratu re re gu la tio n is lo st.T he packs deliver a fixed tem perature: 2 0 C (6 8 F ) for pack 1 , 1 D oC (5 0 F ) for pack 2 . T he

R failure rem oves all inform ation from the E C A M C O N D page, which then displays P A C K R E G .P AC K CON TROLL ER SPR IMARY CHANNEL FA ILURET h e secondary com puter operates as a backup.R egu la tio n is not optim iz ed .P ack flow is fixed at the previous setting.

SECONDARY CHANNEL FA ILURET his failure has no effect on pack regulation. B ackup m ode is lost.E C A M signals related to the corresponding pack are lost.



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PRIMARY AND SECONDARY CHANNEL FA ILUREA s a ba ckup, corre sp ond ing pa ck o utlet temperature is co ntro lle d b y th e an ti- ice valve an dis stabilized to a temperature between 5 C (4 1F ) and 3 0C (8 6F ) in a maximum of 6minutes.E C AM signals, related to the corresponding pack, are lost.

A IR CYCLE MACH INE FA ILUREI f the A ir C y cle M achine (A C M ) fails (com pressor/turbine seizure), the affected pack m aybe op erated in he at exch ang er co oling mode .W arm pre- co ndition ed ble ed air en te rs th e coo ling pa th via the pa ck va lve, a nd go es to th eprim ary h ea t excha ng er. T h en , th e main pa rt of the co oled air go es dire ctly d ownstream o fthe A C M turbine through the bypass valve, and the rest goes through the fa iled A C M .T he A C M seizure reduces the pack flow .A s for norm al pack operation :- T h e p ack co ntro lle r reg ulate s temperature, in a ccordan ce w ith zon e co ntroller d emand ,

by m odulating the bypass valve and the ram air in let flap.- T he zone controller regulates the hot air flow through the trim air valves to optim izecockpit/cabin temperature regulation. Hot air flow is lower than in normal packop eration , be cau se p ack flow is red uced.

HOT AIR PRESSURE REGULATING VALVE FA ILUREFa i led openF a iled c losed

N o e ffe ct.O p tim ized regulation is lost. T rim air valves are driven to the full closedposition. P a ck 1 contro ls the cockpit tem perature to the selected value,and pack 2 controls the cabin temperature (F W D and A F T ) to the meanvalue, o f the sele cted tempe ra tu res.

TR IM AIR VALVE FAILURE

O p tim ize d tempera tu re re gu la tio n o f th e c orre spondin g z one is lo st.



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AIRBeR TR.AINING A IR COND /PRESSNENT 1 .2 1 .1 0 P 1 0~'~n~~T~R A IR C O N D IT IO N IN G S E Q 0 0 1 I R E V 3 3FLIGHT CREW OPERATING MANUAL

I CONTRO LS AND IND ICATO RS ICONTROLS ON OVERHEAD PANEL

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t~~0V U8F A U L T AO F F IRC0ND8

3

NIoI'"u~zC D Zone tempe ra tu re s el

- 1 2 o'clock position: 2 4 C (7 6 F ).- C O LD position : 1 8 C (6 4 F ).- HO T position : 3 0 C (8 6 F ).o HOT A I R p ush bu ttonO n T he valve regulates hot air pressure.O F F T he valve closes, and the trim air valves close.

T he F A U L T circuit is reset.F A U L T T he amber light, and associated E C A M caution come on when ductoverheat is detected. T he fault circuit detects an overheat w hen the ductR temperature reaches 8 8 C (1 9 0 F ).

T he valve and the trim air valves close autom atically.T he F A U L T light goes off when the tem perature drops below 7 0 C (1 58 F ),and the flight crew selects O F F .



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AIRBeR TR.AINING A IR C ON D/P R ES SN E NT 1 .2 1 .1 0 P 1 2~'~n~~T~R A IR C O N D IT IO N IN G S E Q 0 0 1 I R E V 3 3FLIGHT CREW OPERATING MANUAL

RRR

O ff

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R A M A IR pb (guarded)O N : T he O N light comes on white.

I f the D IT C HIN G pushbutton, on the C A B IN P R E S S panel, is in norm al position:- T he R AM air inlet opens.- I f L ::"p~ 1 psi: T he outflow valve control remains normal. N o emergency R A M

air flows in.- I f L ::"p< 1 psi: T he outflow valve opens to about 5 0 % when under a utomatic

control. I t does not automatically open when it is under manual control.E mergency R A M airflow is directly supplied to the m ixer unit.

T he R A M air inlet closes.V E N T I L A T I O N

~--------------~--C D C A B F A N pushbutton

O n T he two cabin fans are on.O FF : T he two cabin fans are off.



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AIRBeR TR.AINING A IR CO ND /P RE SS NE NT P 1 3~'~n~~T~R


ECAM BLEED PAGE

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NIoIInU~ZC D Pack outle t tempe ra tu re

R It normally appears in green - B ut, it appears in amber, if the temperature is higher thanR 9 0 C .o R AM A IR inletRRRR

C rossline - G reenIn transit - A mberIn line - A mberIn line - A mber

T he flap is norm ally closed.T he flap is partia lly openT he flap is norm ally open on ground.T he flap is fully open in flight.o P a ck by pass valve position

I t norm ally appears in green.C C old - V alve closedH =Hot - V alve open.

C D Pack compressor outle t tempe ra tu reR It normally appears in green. B ut, it appears in amber, if the temperature is higherR than 2 3 0 C .SIMU F.P.S.3llP for training only STD 1.3.1


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AIRBeR TR.AINING A IR C ON D/P R ES SN E NT 1 .2 1 .1 0 P 1 4~'~n~~T~R A IR C O N D IT IO N IN G S E Q 0 0 1 I R E V 2 3FLIGHT CREW OPERATING MANUAL Pack flow

Indication is norm ally green. B ecom es am ber if pack flow control valve is closed.Note: The pack flow indication can be up to 30 % below the actual flow rate.

C D P ack flow control valve

I AFT 23. 24__ _ _ _ _ /V 8O T,AIR~------i-----;--10

C DG reen : not closed.C DAmber: not closed, disagree w ith control position.e G reen : fully closed.e Amber: fully closed, disagree w ith control position.

ECAM COND PAGE

TE IIP :

F A N

-c'"oo-cI. .oIoNIoIInU~ZC D Zone con tro lle r fault indication

o

A LT N M O D E P rimary zone controller fault (green).P A C K R E G : Zone controller fault (basic regulation by packs only) (green).N o indication : Z one controller norm al operation.

o Cabin F A N fa ult ind ica tio nA p pears ambe r if fault de tected .SIMU F.P.S.3lIP for training only STD 1.3.1


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AIRBeR TR.AINING A IR C ON D/P R ES SN E NT P 1 5~'~n~~T~R


C D Zone tempera tu re ind ica tionI t is green.

C D Zone duc t tempe ra tu reI t is norm ally green, and becom es am ber at 8 0C (1 76 F ).

Zone trim a ir va lve p ositio n in dica tionI t is norm ally green, and becom es am ber, if the valve fails.C =C o ld valve is fully closed.H =Hot valve is fully open.

C D Hot a ir p re ss ure regu la tin g v alv eRRRRR

In lin eIn lin eCrossl ineCrossl ine

- G reen- A mber- G reen- A mber

T he valve is open.T he valve is not closed; disagrees w ith the control position.T he valve is fully closed, and the pushbutton is at auto.T he valve is closed, and pushbutton is O F F ,or the valved is ag ree is c lo sed.

R U nit of measure (O Cor O F ) is indicated in cyan.



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AIRBeR TR.AINING A IR C O N D /P R E S S N E N T 1 .2 1 .1 0 P 1 6~'~n~~T~R A IR C O N D IT IO N IN G S E Q 0 0 1 I R E V 2 3FLIGHT CREW OPERATING MANUALE C A M C A B P R E S S P A G E

"c;;0-eI G )0Ie; ; ;!-0IInU~Z

C A B PRESS L D G E L E V M A N 500 F T- ~~ - .; ' : ' . : ; - : r _ . , ~ , ~ . - : .; . .~ ' . j _ ~,./~~ -,.;,~.. . ', ' . ;( - - --/,(:.: . - : , ~-~;, ,

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D,P A C K 2

C D PA C K indicationT riangle norm ally green, P A CK 1 (2 ) indication norm ally w hite. B oth become amber whenpack flow control valve is closed with associated engine running.

~ t : . 1 1 .fJ~V.J 1: : -II

SIMU F.P.S.3lIP STD 1.3.1for training only


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AIRBeR TR.AINING A IR C OND /P RE SS NE NT P 17~'~n~~T~R

1 .21 .10A IR C O N D IT IO N IN G SEQ 001 I R EV 30FLIGHT CREW OPERATING MANUAL

-< 0 I I / C K P T I F W D D C A F T: r>. I I Y20 22 I 23~ ~ I~--I~--~> -; : ;,a

RECAM CRU ISE PAGE

~N,a,"'u~C D Zone ind ica tion

E N G I N E

A I R L D G E L E V A U T O 500 FTDP 6.4 PSI C A B V I S F T / M N250~

C A B A L T F T4150

(,~ : .-~ J.J"t ' _ . / J " I + IS C ' ':

T his field also displays the tem perature scale in use ( D C or O F ) .o Zone tempera tu re

SIMU F.P.S.3llP STD 1.3.1for training only


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AIRBeR TR.AINING A IR COND /P R ES SNEN T 1 .2 1 .1 0 P 1 8~'~n~~T~R A IR C O N DIT IO N IN G S E Q 0 0 1 I REV 33FLIGHT CREW OPERATING MANUAL

I W ARN INGS AND CAUT IONS I'" 'c C>0 u e : : : . . . , z0 I- 3: C>'" ' e : : : c, u . . . . . . , I-


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M EMO D ISPLAYR AM A IR O N appears in green if the ram air pushbutton switch is O N .



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AIRBeR TR.AINING A IR CO ND /P RE SS NE NT P 1~'~n~~T~R

1 . 2 1 . 2 0P R E S S U R I Z A T I O N S E Q 0 0 1 I R E V 3 2FLIGHT CREW OPERATING MANUAL

I GENERAL IT he c ab in p re ssu riz atio n s ys tem has fo ur g enera l fu nctio ns:- G round function: F ully opens the outflow valve on ground.- P repressurization : D u ring takeoff, increases cabin pressure to avoid a surge in cabin

p ressure dur ing rota tion .- P r essuriza tion in flight: A d justs ca bin a ltitu de , a nd ra te of ch an ge to p ro vide pa ssen gersw ith a com fo rta ble flig ht.- D e pressurization : A fter touchdow n, gradually releases residual cabin overpressurebe fore the grou nd fu nction fully ope ns th e ou tflow va lve.

T he system consists of :- T wo C abin P ressure C ontro llers (C P C )- O n e outflow valve, w ith an actuator that incorporates three m otors ( tw o for autom atic

ope ra tion, one fo r manual ope ra tion)- O ne control panel- T wo safety valvesA nyone of the three independent e lectric m otors m ay pow er the outflow valve.N o rm ally, one of the tw o cabin pressure contro llers operates the outflow valve by m eansof its a ssocia te d a utomatic moto r.In case of ditch ing, an override sw itch on the control panel allow s the flight crew to closethe outflow valve and all valves below the flotation line.T he flight crew can set the system to operate automatically, sem i-automatically, ormanual ly .I n norma l ope ra tion, cab in p ressuriz ation is fu lly automatic .

A UTO MA TIC O PE RA TIO NT he flight crew m onitors the operation of the system , but does noth ing to control it. A irpressu re in the cab in follow s exte rnal sche du le s th at the system receives as sig na ls fromthe F light M a nagem ent and G u idance S ystem (F M G S ).W hen F M G S data is not availab le for autom atic pressurization, the crew only needs tosele ct the land ing fie ld e le va tion.

R T he pressurization system then uses the m anually-se lected landing fie ld elevation forR internal schedules.M ANUAL O PERAT IO NIn m anual m ode, the flight crew controls the cabin altitude via the m anual m otor of theoutflow va lv es, b y ope ra tin g c on tro ls o n th e p re ssu riz atio n contro l p anel.



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AIRBeR TR.AINING A IR C OND /P RE SS NE NT 1 .2 1 .2 0 P 2~'~n~~T~R PRESSUR IZAT ION SEQ 100 I REV 23FLIGHT CREW OPERATING MANUALSCHEMAT ICS

IE M E R If- - _ . .

R A M A IR I

IA D IR S I S T A T . P R E S S1 +2 +3 I B A R O C O R R

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F M G C I DE S T . Q N H

IL G C IU I F L T /G N D1 +2 I

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HE C A M S Y S D IS P L A ~ M A N U A L~ E C A M W A R N IN G ~ B A C K U P

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N O TU S E D

T h e s a m ea s f o rC P C 1

S A F E T YVALVES

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for training onlyIMU F.P.S.3lIP STD 1.3.1


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I MAIN CO MPONENTS ICAB IN PRESSU RE CO NTRO LLER ST w o identica l, independent, d igita l controllers autom atica lly control the system , bym ainta in ing the proper cabin pressure. T hey receive signals from the A ir D a ta Inertia lR e ference S ystem (A D I R S ) , the F light M anagem ent and G u idance C omputer (F M GC ), theE n gine Interface U n it (E I U ), and the L anding G e ar C o ntrol In terface U n it (L G C IU ) .W hen the system is in autom atic or sem i-autom atic m ode, one controller is active, theother is on standby.T he controllers also generate signals for the E lectronic C e ntralized A ircraft M onitoring( E C AM ) .F or operation in m anual m ode, each contro ller has a backup section, w hich is pow ered byan independent power supply in the contro ller N l position. T his section also has apressu re se nsor tha t g en erates th e ca bin a ltitud e a nd p re ssu re signa l for th e EC AM , whenM A N m ode is selected.T h e con tro llers commun icate w ith e ach othe r via a cross- cha nn el link.

O UTFLO W VALVET h e o utflo w valve is on the rig ht- han d side of fuselag e, b eh in d th e aft cargo compa rtm entan d b elow the flotation lin e.T h e outflow v alve a ss emb ly c on sists o f a flu sh , sk in -mounte d, re cta ngula r frame, ca rryin ginward an d outward o pen ing fla ps linked to the actuato r. T h e actuato r co ntain s the drive sof the two automatic motors and the manual motor. E ither of two automatic motorsoperates the valve in autom atic m ode, and the m anual m otor operates it in m anual m ode.In autom atic m ode, the operating controller signals the position of the valve to the E C AM .In m anual m ode, the backup section of the r u e 1 c on tro lle r s ig na ls th e positio n o f th e v alveto the E C A M .N ote: W hen the RAM AIR pushbutton is O N, and /: ,p is below 1 psi, the system drives the-- outflow valve about 50 % o pe n if it is u nd er a utoma tic co ntro l. If the system is under

m anual contro l, the outflow valve does not autom atica lly open, even if /:,p is below1 p si.S AFE TY VA LV ESTwo in dep en de nt p neumatic safety va lves pre ven t cabin p ressure from going to o hig h ( 8 .6R psi above ambient) or too low (1 psi below ambient).T hey are located on the rear pressure bulkhead, above the flo tation line.



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AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 .2 1 .2 0 P 4~'~n~~T~R P R E S S U R I Z A T I O N S E Q 0 0 1 I R E V 2 3FLIGHT CREW OPERATING MANUAL

I S YS TEM O PER AT IO N IAUTOMATIC PRESSURE CONTROL MODE

- T w o identical, independent, autom atic system s (each consisting of a controller and itsa ss oc ia te d mo to rs ) c on tro l c ab in p re ss ure .E ith er system contro ls th e sin gle o utflow va lve.O n ly one controller operates at a tim e.A n a utoma tic tran sfe r o ccu rs:. 7 0 seconds after each landing .. I f the operating system fails.

- T h e controller autom atically controls the cabin pressure. It lim its the cabin pressure to8 0 00 feet m axim um and optim izes it during clim b and descent phases.

- T he controller norm ally uses the landing elevation and the Q N H from the F M G C , and thepressure altitude from A O IR S .I f F M G C data are not available, the controller uses the captain B a ro R e ference from theA O I R S and the L O G E L E V selection.

- P ressurization is assum ed through the follow ing m odes :



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AIRBeR TR.AINING A IR C O N D /P R E S S N E N T P 5~'~n~~T~R


G round (G N )B e fore takeoff, and 5 5 seconds after landing, the outflow valve fully opens to ensure thatthere is no residual cabin pressure. A t touchdown, any rem aining cabin pressure isreleased at a cabin vertical speed of 5 0 0 feet/m inute.

T akeoff (T O )T o avoid a pressu re su rge at rota tion , th e controller p re -p re ssurizes the a ircra ft a t a rate o f

R 4 0 0 feet/m inute, until the L ::"Preaches 0 .1 P S I . A t lift-o ff, the controller in itia tes the clim bphase.

C lim b (C l)D u rin g clim b, th e cabin altitu de va ries a ccording to a fixed p re -p ro grammed law th at takesinto acco un t th e aircraft's actual ra te of clim b.

C ruise (C R )D u rin g c ru is e, th e contro lle r main ta in s cabin a ltitu de a t th e le ve l- off va lu e, o r a t th e la nd in gfie ld e le va tio n, whic he ve r is h ig he r.

D escent (D E )D u rin g d escen t, th e con troller m aintain s a ca bin ra te of d escen t, such tha t cab in p re ssureequals th e la nd in g fie ld p re ssu re , ju st b efo re la nd in g.T he m axim um descent rate is 7 5 0 feet/m inute,

A bort (A B )I f the aircra ft doe s no t clim b after takeo ff, th e abo rt m od e p re ve nts the cab in a ltitud e fromclimbing.C a bin pressure is set back to the takeoff a ltitude + 0 .1 P S I .



26/56

AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 .2 1 .2 0 P 6~'~n~~T~R P R E S S U R I Z A T I O N S E Q 0 0 1 I R E V 3 7FLIGHT CREW OPERATING MANUALP RES SU RIZA TIO N M OD ES S W ITC HIN G li,';II~I#.]

FROM GN T O GN CL AB T O CL CR CR DE DE ABT O T O C L CL AB G N GN CR CL DE CL GN C L

ENG 1 and ENG 2 TLA ~ M CT (*) 1 0U G sys 1 or sys 2 COM PRESSED 1 1One U G sys UNLOAD ED and A lC speed above 1 1

C 100 kt0 One U G sys COM PRESSED and A lC speed below 1 1N 100 kt0 A lC AL l < 8000 FT 1AIT A lC AL1~000 FT 1I A lC AL l CHANG E S IN CE T I D S ; 5075 SLFT 1A0 A lC AL l CHANG E S IN CE T I D ~ 5075 SLFT 1NS A lC R ATE O F C LIM B ~ 21 SL FPM FOR 60 SEC . 1 1

A lC R ATE O F C LIM B ~ 1 00 SL FPM FOR 30 SEC . 0 1A lC R ATE O F DESCEN T ~ 200 SL F PM FOR 30 SEC . 1A lC RATE OF DESCENT ~ 250 S L FPM FOR 30 SEC 1

o Cond itio n n ot va lid1 Condition valid1A Only one A condition necessary(*) Engin e runn in gExamp l eT he cabin pressure controller sw itches from C L (clim b) m ode to A B (abort) m ode when:- the aircraft is below 8 00 0 feet, or the aircraft has changed altitude less than 5 07 5 feet

sin ce ta ke off a nd ,- the aircraft rate of descent is greater than 2 00 feet/m inute for 3 0 seconds.

RP RES SU RIZA TIO N FL IG HT P RO FILE

AI C

V AL VE FU LLO PE N S IG NA L

'" 'c00'" '-o00,0 GROUND PREPRESSUN CAB IN > -400 ft/min:; VIS,~ CAB IN > +0 .1 PS I~ 6 P

G ROUND

-----_._ T IME

+500 ft/min >~+8.06 PS I + 0 .1 PS I

PRESSU R IZA T ION D EPRESS



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MANUAL PRESSURE CONTROL MODEI f both autom atic system s fail, the flight crew m ay use the C A B I N P R E S S control panel tota ke o ve r manua l co ntro l o f ca bin p re ssu riza tio n .. P ress the M O D E S E l pushbutton to select M A N , and. P ush the M A N V IS C T l sw itch U P or O N to increase or decrease cabin altitude.T he first of these actions cuts off power to the A U T O m otors, and enables the M A N m otorto control the outflow valve.Note: 1. Due to the slow operation of the outflow valves in manual mode, and the limited

resolution of the outflow valves' position on the ECAM, the visual ECAMindication of a change in the outflow valves' position can take up to 5 seconds.

2. As the pressurization system is manually-controlled, the outflow valve does notopen automatically at touchdown.

D ITCH INGT o prepare for ditching, the flight crew must press the D I T CH IN G pushbutton on the C A B INP R E S S control panel to close the outflow valve, the em ergency ram air in let, the avionics

R ventilation inlet and extract valves, and the pack flow control valves.



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AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 .2 1 .2 0 P 8~'~n~~T~R P R E S S U R I Z A T I O N S E Q 1 0 0 I R E V 3 2FLIGHT CREW OPERATING MANUAL

I CO NTRO LS AND IND ICATO RS IO VERH EAD PANEL

C D lO G E lE V selA U T O T he pressurization system uses the F M G S data to construct anop tim ized p ressure schedu le .T o exit the A U T O position, pull out and turn the selector.O ther positions T he pressurization schedule does not use the landing elevation fromthe F M GS , but instead uses the landing elevation selected w ith th isknob (from - 2 0 0 0 to + 1 4 0 0 0 feet) as its reference.

R Note: The LOG ELEV selector scale is only given as an indication;R - - refer to the ECAM information for accurate adjustment.o M OD E S E l pb

A U TO A utomatic mode is operating. O ne of the two systems contro ls theoutflow valv e.Note: If the pilot suspects that the operating pressurization system is not-- performing proper/y, he can attempt to select the other system by

switching the MODE SEL pushbutton to MAN, for at least 10seconds, then returning it to AUTO.

M A N T his legend appears in white, and F AU LT does not come on. T he flightcrew then uses the M A N V IS C T l sw itch to control the outflow valve.F A U L T I t T his legend appears in amber and the E C A M caution light comes on onlyw hen both autom atic system s are faulty .Note: The pilot may notice a variation in the CAB ALT indication on the-- ECAM PRESSpage, when the system switches from the cabin

R pressure control AUTO mode to MAN mode, due to the reducedR resolution of the backup pressure sensor.



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1.21 .20P R E S S U R I Z A T I O N S E Q 0 0 1 I R E V 35FLIGHT CREW OPERATING MANUAL

C D M A N V IS C T l toggle sw itchT he switc h, s prin g l oaded to neu tra l, c on tro ls th e outflow valv e pos itio n th rough ope ra tio nof the M A N motor, when the M O D E S E l pushbutton is in the M A N position.U P T he valve moves towards the open position.O N : T he valve moves towards the closed position.Note: The outflow valve operates slowly, so the pilot must hold the toggle switch in

the UP or DN position until reaching the target VIS.C D D I TC H IN G gua rded pushbutton

Norma lO N

T h e system fu nctio ns n ormally.T he operating system sends a "close" signal to the outflow valve,em ergency ram air in let, avionics ventilation inlet and extract valves, andp ack flow co ntro l valve s.Note: The outflow valve will not close automatically, if it is under manual-- control.

C A U T I O NIf the ditching pushbutton is set to O N , on ground, w ith the low pressure ground cartconnected and all doors closed, a differentia l pressure w ill build up.



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AIRBeR TR.AINING A IR C O N D /P R E S S N E N T 1 .2 1 .2 0 P 1 0~'~n~~T~R PR E S SUR I Z A T I O N S E Q 0 0 1 I R E V 2 5FLIGHT CREW OPERATING MANUALE C A M C A B P R E S S P A G E

"coo-eIooIoNNIoIInU~Z

~-----------7~CDC A B P R E S S L D G E L E V M A N 5 0 0 ~ I 0~-------------'----i---(4

V/SFT/M~

~~50 ~ I I~ : \ 0 4150 - - -++-01

1 5D N ~

,-------S-Y-S1-=MAN....-----Sy-S-2~E~

I N L E T V E N 1 x T R A C T , ~ I I ~D , - - - - - - - - - - , ~ , - - - - - - -P A C K 1

DPP S I( S J

DP A C K 2- ; x : - ~ ~ r .. - ::1 .'-:; ' :( ~.' c

C D L O G E LE V A U TO /M A N- L O G E LE V A U TO appears in green when the LO G E L E V selector is in A UTO .- L O G E LE V M AN appears in green when the LO G E LE V selector is not in A UTO .

R - N either appears when the M O D E S E L pushbutton switch is in M A N .o Land ing e leva tionT he landing elevation selected either automatically by the FMG S or manually by the pilot

R appears in green (but not when the M OD E S E L pushbutton switch is in M AN ).

C D V IS F T /M IN (cabin vertical speed)T he analog and digital presentations appear in green when V IS is in the norm al range.T hey appear in amber when V IS ~ 2 00 0 feet/m inute.T he digital presentation pulses when V IS > 1 8 0 0 feet/minute (resets at 1 6 0 0feet/minute).

for training only STD 1.3.1SIMU F.P.S.3lIP


31/56



C D L : :"PP S I ( cab in d iffe ren tia l p ressure )T h e analog and digita l presentations appear in green w hen L ::"Pis in the norm al range.

R T hey appear in amber when L ::"Ps - 0 .4 psi or ~ 8 .5 psi.T he d ig ita l p resenta tion pulses if L ::"p> 1 .5 psi ( resets at 1 psi) during flight phase 7 . (S e epage 1 4 to identify flight phases).

C A B A L T F T (cabin altitude)T h e analog and digita l presentations appear in green, in norm al range.T hey appear in red if the cabin altitude goes above 9 55 0 feet.T he digita l presentation pulses if the cabin altitude is at or above 8 80 0 feet ( resets at8 6 0 0 fe et).

C D A ctive system indication (S Y S 1 or S Y S 2 or M A N )S Y S 1 or S Y S 2 appears in green when active and in amber when faulty. W h en eithersystem is inactive, its title does not appear.M A N appears in green when the M O D E S EL sw itch is in M A N .

C D Sa fe ty v alv e pos itio nS A F ET Y appears in white and the diagram in green when both safety valves are fullyclosed. S A F E T Y and the diagram appear in am ber when either valve is not closed.Note: The safety va lve opens w hen the cabin diffe rentia l pressure is betw een 8.2 and-- 8.9 ps i. T he ra nge is d ue to th e red uc ed a cc urac y of L::"Pmeasu remen ts ( in MANm ode), com bined w ith the decrease in cabin diffe rentia l pressure that occurs

immed ia tely after the s afety v alv es op en.C D O u tflow valv e positio n

T he diagram is green w hen the valve is operating norm ally.T he diagram becom es am ber when the valve opens more than 9 5 % during fl igh t.



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AIRBeR TR.AINING A IR C O N D /P R E S S N E N T 1 .2 1 .2 0 P 1 2~'~n~~T~R PR E S SUR I Z A T I O N S E Q 0 0 1 I R E V 2 4FLIGHT CREW OPERATING MANUALE C A M C R U IS E P A G E-----flv-------T1-A IR LD G E LE V A U TO 50 0 FT ' " I I C DliP 6.4 PSI'" C A B VIS F T / M N I I 0

(c~TI ~:~ ~; 250~-...1~1- -~~I I C A B A L T F T '" 04150"coo-eIN

oIoNNIoIInU~Z

~X; ..y.....":.x : ~ ::~ . I

C D L O G E LE V A U TO /M A NIdentifical to C A B P R E S S page

R 0C A B V IS F T /M IN (cabin vertical speed)G reen, in normal range.A mber, when out of normal range : V IS ~ 2 00 0 feet/m inute

R P ulses when V IS > 1 8 00 feet/m inute (resets at 1 6 00 feet/m inute)": AUTO MODE:oIIIIN

MAN MODE:

oIo~ C A B VIS F T / M N~ 250~IInU~Z

C A B VIS F T / M N

C U P: =NR 0C A B A L T F T (cabin altitude)G reen, in normal range.R ed, for excessive cabin altitude : ~ 9 55 0 feet.

R P ulses for cabin altitude at or above 8 8 0 0 feet (resets at 8 6 0 0 feet)C D L::"Pindication

No rmally g reen .A mber when out of normal ranee L ::"ps - 0 .4 psi or ~ 8 .5 psi.



33/56

AIRBeR TR.AINING A IR C O N D /P R E S S N E N T P 1 3~'~n~~T~R

1 . 2 1 . 2 0P R E S SUR I Z A T I O N S E Q 0 0 1 I R E V 3 5FLIGHT CREW OPERATING MANUAL

I E C A M D O O R P AG E IR

'" 'coo'" ''";;,oNN,;;,"'u~

D O O R / O X Y O XY 1700 P S IR E G U L LO P RV I S - 1650 FT/MN ~V IO N IC -- --II

CAB IN - - - S L I DE I IS L I DE - - - CAB INA V IO N IC ---- ---I I II- - C A RGO

C D V IS (cabin vertical speed)T his number only appears during flight phases 5 , 6 and 7 . (S ee page 1 4 for flight phasedefinitions).- It is normally green.- It becomes amber when the V IS is greater than 2 0 00 feet/m inute, or less than

- 2 0 00 feet/m inute.



34/56

AIRBeR TR.AINING A IR COND /P R ES SNEN T 1 .2 1 .2 0 P 1 4~'~n~~T~R PRESSUR I ZA T I ON S EQ 10 0 I R E V 3 7FLIGHT CREW OPERATING MANUALW ARN INGS AND CAUTIONS

'" 'c0 C>~ u e : : : . . . , zI- 3: C>'" '

e : : : c, u.. . . . . , I-


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1 . 2 1 . 3 0V E N T I L A T I O N S E Q 0 0 1 I R E V 2 3FLIGHT CREW OPERATING MANUAL

I GENERAL IThe ven tila tio n s ys tem in clu de s ven tila tio n fo r:- the avionics, controlled by the avionics equipm ent ventilation controller (A E V C ),- the battery,- the lavatories and galleys.Note: For a discussion of cargo ventilation, see 1.21.40.



36/56

AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 .2 1 .3 0 P 2~'~n~~T~R V E N T I L A T I O N S E Q 0 0 1 I R E V 2 3FLIGHT CREW OPERATING MANUAL

I A VIO N IC S V EN TIL AT IO N IGENERALT he a vio nic s ventila tio n sy stem is fu lly a utoma tic.I t coo ls th e ele ctrical and ele ctro nic compon ents in th e a vion ics compartm ent an d o n th efligh t deck, in clud in g th e in strumen t an d circu it brea ke r pa ne ls. I t u se s two ele ctric fan s tofo rce th e circulation of co oling a ir.W hatever the configuration of the avionics ventilation system is, a part of the avionicsven tilation air is su cked from the cockpit th ro ug h the different co ckpit pa ne ls.

M AIN CO MPO NENTSFANSTwo e le ctric fa ns ope ra te contin uous ly a s lo ng a s th e a ircra ft e le ctrica l sys tem is supp lie d.T h ey make th e air circulate a ro un d th e avion ics equ ipment.

SK IN A IR INLET AND EXTRACT VALVEST hese valves adm it air from outside the aircraft and evacuate hot a ir from inside theaircraft.

SK IN EXCHANGE INLET AND OUTLET BYPASS VALVEST hese valves perm it air to circu late between the avionics bay and the space under thecargo compartment flo or.

A IR COND IT ION ING INLET VALVET h is va lv e opens to p erm it th e a ir co nd itio nin g circ uit to s upply fre sh a ir to th e a vio nic s bay.

SK IN EXCHANGE ISO LAT ION VALVET h is valve co nne cts or isola te s th e skin h eat e xcha ng er.

AV ION ICS EQ UIPMENT VENT ILAT IO N COMPUTER (AEVC )T he A E V C controls the operation of all fans and valves in the avionics ventila tion system .



37/56

AIRBeR TR.AINING A IR CO ND /P RE SS NE NT P 3~'~n~~T~R

1 .21 .30V E N T I L A T I O N SEQ 1 0 0 I R E V 26FLIGHT CREW OPERATING MANUAL

N OR MA L O PE RA TIO N, O PEN -C IR CU IT C ON FIG UR AT IO NG RO UN D O PE RA TIO NST h e open-circuit configuration operates w hen skin tem perature is above the on- groundthreshold.O n-ground thresho ld + 1 2e (53 F ), tempera tu re increas ing, o r+ goe (48F) , tempera tu re decreas ing .

A V ION IC BAYSK IN EXCH

OU TLE TB YPA SS V ALV E

A IR CONDF R OM CO CK PIT SK IN EXCHISO L VALVE

- - -H OT A IR FRO fC OO LIN G U NIT

n > , " " , , " , , ~V ALV ES O PENFAN RU NSIL ------IN L ET TEM P ) 2rc ------=---1

- BO TH ENG IN ES STO P PED - - - - - ; 1 ; - - - - - - 1OO -GROUND - - - - - - - I= - - - - - - ' GROUND

COOL INGCONTROLLER

'" ''" 'oo-cI'"ooIo'"NI; : ;I'"U~

[Q]_ Il l J : : l l f GROUND-----------=,------1B - TH R OTTL E NOT AT TO .SK IN T EM PE RA TU RE> O N G RO UN D T HR ESH OL D



38/56

AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 . 2 1 . 3 0 P 4~'~n~~T~R V E N T I L A T I O N S E Q 1 0 0 I R E V 2 6FLIGHT CREW OPERATING MANUALN ORM AL O PE RA TIO N, C LO SE -C IR CU IT C ON FIG UR AT IO NF lig h t o p e r atio n sT he close- circu it configuration operates w hen skin tem perature is beneath the in- flightthreshold.I n f ligh t threshold =+ 3 5e (9 5F ), tempe ra tu re in creas ing, o r=+ 3 2 e (gO F ), temperature decreas ing .

G r ou n d o p e ra tio n sT h e clo se -circuit co nfig uration o perate s whe n skin tempe rature is be ne ath th eon-ground threshold .O n g round th reshold =+ 1 2 e (5 3 F ), tempe ra tu re in creas ing, o r=+ goe ( 4 8F ), temperature decreas ing .

A V I O N I C B A Y

A I R C O N DF R O M C O C K P I T

C A R G O~ ~ ~ ~ ; ; ; ; ; ; ~ , . U N D E R F L O O R

V A L V E S A N DF A N S A R EC O N T R O L L E D I NC L O S E D C I R C U I TC O N F I G U R A T I O N

C O N T R O L L E R

for training only STD 1.3.1


39/56

AIRBeR TR.AINING A IR C O N D /P R ES S NE N T P 5~'~n~~T~R


N O RM A L O PE RA T IO N , IN TE RM ED IA TE C O NF IG U RA T IO NF l ig ht o p e ra tio n sT he intermediate configuration operates when skin temperature is above the in-flightthreshold.I n flig ht th re shold =+ 3 5 C (9 5 F ), temperature increasing, or=+ 3 2 C ( 9 0 F ), temperature decreasing.

A V I O N I C B A Y

C A R G OU N D E R F L O O R

~ nF L T'" ' G N D I L" ' I~'" ' V A L V E S A N D F A N SI~~ T H R O T T L E S A T T O . A R E C O N T R O L L E DA N D I N I N T E R M E D I A T Er I J C O N F I G U R A T I O N'" S K I N T E M P II;; > I N F L I G H TI T H R E S H O L D I C O N T R O L L E R~



40/56

AIRBeR TR.AINING A IR COND/PRESSNENT 1 . 2 1 . 3 0 P 6~'~n~~T~R V E N T I L A T I O N S E Q 1 0 0 I R E V 2 3FLIGHT CREW OPERATING MANUALABNO RMAL O PERATIO NBLOW ER FAULT o r EX TRACT FAULT wa rn i n gW hen the B LO W E R or the E XT RA C T pushbutton sw itch is set at the O V R D (override)p os itio n, th e s ys tem is in c lo sed- circ uit c on fig ura tio n and adds a ir from the a ir c onditio nin gsystem to the ventilation air.

A V I O N I C B A YS K I N E X C H

O U T L E TB Y P A S SV A L V E

A IR C O N DF R O M C O C K P I T

-e'"oo-cI' "ooIo' "NIoIInU~ZW hen the B L O W E R pushbutton switch is set at O V R D , the blower fan is stopped and theextract fan continues to run.W hen the E X T R A C T p ushbutton sw itch is set at O V R D ,the extract fan is controlled directlyfrom the pushbutton. B oth fans continue to run.



41/56



Smo k e c on fig u r atio nW hen the sm oke detector detects sm oke in the avionics ventilation air the B L O W E R andthe E X TR A C T F A U LT lights com e on.W hen both the B L O W E R and the E X T R A C T push buttons are set to the O V R D position, theair conditioning system supplies cooling air, which is then exhausted overboard. T heb lowe r fan sto ps.

A V I O N I C B A YS K I N E X C HO U T L E T ) - - - - ' ' - - - - - - - - '

B Y P A S SV A L V E

-e-coo-eI. . . .ooIo' "NIoIInU~ZCon t ro l le r f ailu r eT he system goes to the same configuration as above, except that the skin exchangeiso la tio n va lve sta ys o pe n.T he inlet valve and the skin exchange inlet bypass valve rem ain in the position they werein b efo re th e failure o ccu rre d.T h e extract fan keeps running.



42/56

AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 .2 1 .3 0 P 8~'~n~~T~R V E N T I L A T I O N S E Q 1 0 0 I R E V 2 3FLIGHT CREW OPERATING MANUAL

I AV ION ICS GROUND CO OLING IGENERALT h e a vion ics grou nd co oling is fully au tomatic.I t ensures the cooling on ground of the avionics ventilation air in case of outside extrem eho t a ir.T he cooling system is integrated into the avionics ventila tion system , but operatesindependently.

M AIN CO MPO NENTST he cooling system consists of :- 1 in let valve,- 1 ground cool fan,- 1 cooling unit, consisting in a freon gas closed- cycle refrigeration system ,- 1 outlet valve,- 1 controller.

SY STE M O PE RA TIO NT he am bient air used by the cooling unit is draw n from outside by the ground cooling fanth ro ugh th e in le t va lv e.A ir from the cooling unit is discharged overboard via the outlet valve.T h e ope ra tio n o f th e coolin g unit, th e in le t va lv e, th e g ro und c oo lin g fa n and th e outle t v alveis c on tro lle d b y th e g ro und c oo lin g contro lle r.G round cool valves open when :- the aircraft is on ground, and- the engines are stopped, and- the ground cool pushbutton is at auto position.T he cooling unit operates w hen :- above conditions are met, and- the tem perature of avionics ventila tion air is greater than 2 rC (8 0 F ).T he ground cool unit autom atica lly stops w hen :- the engines start,- the ventila tion air tem perature is lower than 2 2 C (7 2 F ),- the ventila tion air tem perature reaches the upper lim it of 6 2 C (1 4 4 F ).S y stem fa ults a re sign alled by the co ntrolle r to the EC AM an d the g ro un d crew call system .



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1.21 .30VENT I LAT ION SEQ 001 I REV 23FLIGHT CREW OPERATING MANUAL

I BATTERY VENTIL AT ION IA venturi in the skin of the aircraft draw s air from the space around the batteries and ventsit o ve rb oa rd . T h e re su ltin g a irflow ventila te s th e batte rie s.

I LAVATORY AND GALLEY IA n extractio n fan d raws ambien t ca bin a ir throu gh the la vato ries and ga lle ys and exha ustsit near the outflow valve.T h e e xtraction fan ru ns co ntinua lly whe n e le ctric power is availa ble.

oo-e~----~--------~----------------------~~--------------ooIo. ,

L A V A T O R YIG A L L E Y

NIoIo nu~z

C A B I N T E M PS E N S O R

C A B I N T E M PS E N S O R

E X T R A C T I O N F A N

~~~ O U T F L O W V A L V E

SIMU F.P.S.3llP STD 1.3.1for training only


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AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1.21.30 P 10~'~n~~T~R VENTILATION SEQ 100 I REV 23FLIGHT CREW OPERATING MANUAL


C D - - ~ " ~ : ' ~ ~ B - L : ~ ~ E - R ~ : - ~ ~ n L A - n O N - - - - ~ ~I I 1-21-10--=~=----==--....;;;;;=--

C D BLOWER and EXTRACT pb swAUTO When both pushbutton switches are on AUTO :

- On the ground before the application of TO power, the ventilation systemis in open circuit configuration (closed configuration when the skintemperature is below the ground threshold).

- On the ground after the application of TO power, and in flight, theventilation system is in closed circuit configuration.

OVRD When either pushbutton switch is on OVRD :- The system goes to closed circuit configuration.- Air from the air conditioning system is added to ventilation air. (Theblower fan stops if the BLOWER pushbutton switch is in the OVRDposition).When both pushbutton switches are on OVRD :

- Air flows from the air conditioning system and then overboard.- The extract fan continues to run.

FAULT It Lights up amber (and ECAM activates)in the blower switch, if : - blowing pressure is low*

- duct overheats*- computer power supply fails- smoke warning is activated

in the extract switch, if: - extract pressure is low*- computer power supply fails- smoke warning is activated.

* If the warning occurs on the ground when the engines are stopped,the external horn sounds.o GND COOL pb sw

AUTO

OFFFAULT It

The inlet and outlet valves open, the ground cooling fan and the groundcool unit start automatically when the aircraft is on ground with theengines stopped and inlet temperature ~ 2rC.The ground cool unit stops, the valves close and the fan stops.Lights up amber, the ECAM and the ground crew call system activatewhen a fault is detected in the ground cool unit, valves or fan.



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AIRBeR TR.AINING A IR C O ND /P RE SS NE NT P 11~'~n~~T~R

1 .21 .30VENT I L A T I ON S EQ 100 I R EV 23FLIGHT CREW OPERATING MANUAL

EC AM C AB PR ESS PAG E

-e' "oo-cIoIo'"NIoI'"u~z

C AB PR ESS LD G ELEV M A N 500 FTD P V IS FT IM N CA S A L TPS I G . F T00 ~N

T his normally appears in white. It becomes amber if there is a B LO W E R F AU LT , E XT RA CTFAU LT , or A V N C S SY S FAU LT .o IN L E T and E X TR A C T indicationsN ormally white. C orresponding indication becomes amber in case of B LOW E R F AU LT orE XT RA CT F AU LT .

C D IN LE T and E XT RA C T valve diagramsT h i s i n d i c a t e s t h a t t h e v a L v e i s f u L L y c L o s e d .I t i s n o r m a L L y g r e e n , b u t i s a m b e r i f t h e r e i s a d i s a g r e e m e n t ._____Q

I re-c00; ; ;~;; '~0~N ~,-0I'"u oX x rz

T h i s i n d i c a t e s t h a t t h e v a L v e i s f u L L y o p e n .I t i s n o r m a L L y g r e e n , b u t i s a m b e r i f t h e r e i s a d i s a g r e e m e n t .N O T E : B e c a u s e o f t h e a c c u r a c y o f t h e t e m p e r a t u r e s e n s o r s , o n t h e- - g r o u n d t h e c L o s e d o r o p e n i n d i c a t i o n m a y b e c o m e a m b e r w h e n t h e

t e m p e r a t u r e i s c L o s e t o t h e v a L v e o p e n i n g o r c L o s i n g t h r e s h o L d .T h i s i n d i c a t e s t h a t t h e i n L e t v a L v e i s i n t r a n s i t ( i n L e t v a L v e o n L y ) .I t i s a m b e r .T h i s i n d i c a t e s t h a t t h e e x t r a c t v a L v e i s p a r t i a L L y o p e n ( t h e e x t r a c tv a L v e i s c L o s e d b u t a s m a L L i n t e r n a L f L a p i s o p e n ) .I t i s n o r m a L L y g r e e n , b u t i s a m b e r w h e n t h e v a L v e f a i L e d i n t r a n s i t .

SIMU F.P.S.3llP for training only STD 1.3.1


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AIRBeR TR.AINING A IR C ON D/P R ES SN E NT 1 .2 1 .3 0 P 1 2~'~n~~T~R V E N T I L A T I O N S E Q 1 0 0 I R E V 2 3FLIGHT CREW OPERATING MANUAL

C D GN D CO O L ind ica tio nT he indication is normally white. It becomes amber if the inlet or the outlet groundcooling valve is not fu lly closed when at least one engine is running or in flight.

GN D CO O L inlet/o utle t va lve s po sition'"coo'"IN T h i s i n d i c a t e s t h a t t h e i n L e t a n d o u t L e t

v a L v e s a r e f u L L y c L o s e d . I t i s g r e e n .Io.,NIoIInU~Z rI T h i s i n d i c a t e s t h a t t h e i n L e t o r t h e o u t L e t v a L v e i s n o t f u L L y c L o s e d .I t i s n o r m a L L y g r e e n .I t i s a m b e r w h e n a t L e a s t o n e e n g i n e i s r u n n i n g o r i n f L i g h t .



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AIRBeR TR.AINING A IR COND/P R ES SNEN T P 1 3~'~n~~T~R


I W ARN INGS AND CAUTIONS I' "c0 Q Z~ W c : : : . . . . QI-- 3:' " c : : : I l . . . . . . . . . . . I--I ~ . . . . ~~ 0 0 z : z : : c : : :0 U) I-- 0 0 3: U) Wc : : : . . . . 1 1 \ 0 0 I--. . . . . c o0 3: l!:I l!:I . . . . Q l!:I u,~ I l. . . Z Z 0 Z c(W W . . . . . . . . WN ~ ~!- I-- I--U) (I)0 . . . . . . . . . .IInU~Z

RE / W D : FA ILU R E T IT LE AU R A L M A STE R SO L OC A L F LTPAG E PHAS Econditions W AR N IN G L IG HT CA L L ED WARN I N G INHIB

B LOW ER FA U LT B LOW ER *B lowinq pressure low or duct overheat F A ULT It 3,4,5,E XTR A C T FA U LT EXTR A C T * 7,8E xtract pressure low FA ULT ItS KIN VA LVE FA ULT1 . E xtract valve fully open in phase 3 or N IL 4,5,2 . E xtract valve fully open in flight or 7,83 . Inlet valve not fullv closed in fliqht S IN G LE M A STE R C A BCHIM E C AU T P R ES S B L OW E RA VN C S SY S FA U LT andPower up test not satisfactory or AE V C not supplied or E XTR AC T 3,4,5,valves position disagree FA U LTIts** 6, 7, 8VE N T G N D COO L F AU LT G N D * 9G round cool inlet or outlet valve disagree or C O O Lground cool unit fault F A U LT It

A ssociated w ith ground external call.** O nly in case of A E V C power supply failure on ground.*



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1 .21 .40C A RGO SEQ 200 I REV 23FLIGHT CREW OPERATING MANUAL

I GENERAL IAn extraction fan draws air from the cargo compartments (~) and exhausts it overboard.Air from the cabin replaces the exhausted air, thus ventilating the cargo compartments.The system can add hot bleed air to the air entering from the cabin, thus giving the flightcrew control of the temperature in the forward or aft (~) cargo compartment.



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AIRBeR TR.AINING A IR C ON D/P R ES SN E NT 1 .2 1 .40 P 2~'~n~~T~R C A RGO SEQ 203 I R EV 23FLIGHT CREW OPERATING MANUAL

C A R G O S M O K E D E T E C T IO N

A F T I S O L . V A L V EF A U L Tf----------1I O F F I -------1~

A F T C A R G O D O O R N O T L O C K E DimjmO L D ' Y H O T'-------------1~

H O T A IRF A u L T O : : _ : V H _ : _ : _ : _ T----.~--11 0m - -- tl - - -- - ' -R = E S = E : . .: _ T - -- j ~-c-e' "oN-cINooIo~

C A R G OV E N T I L A T I O NC O N T R O L L E R

C A R G OH E A T I N G

C O N T R O L L E R

NI

L_ ~ I O RoIII>U~Z

f-------1~ E C A M

O V E R B O A R Dt

r - - - - - - E C A M

A F TC A R G O

C O M P A R T J I I I E N T

D O U T L E T~-------I~ I S O L . V A L V E~----~c:x::::> E X T R A C T I O N F A N

C O M P T . T E M tl~ ~ ~ - - ~ ~ I~ L__~

~ .0 UJ...JU)00U)...J....u

I N L E TI S O L . V A L V E

I N L E T T EMP_

for training only

nt C A B IN A M BA IRC A R G O

~--__"{IJ T R IM A IRV A L V E

C L O S U R E C A R G O~ P R E S S R E G. 1 V A L V E

O T A IRSIMU F.P.S.3lIP STD 1.3.1


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1 . 2 1 . 4 0C A R G O S E Q 2 0 3 I R E V 2 3FLIGHT CREW OPERATING MANUAL

I SYSTEM O PER ATIO N IAFT CARG O COM PARTMENT VENT ILA TIONA ir from the cabin goes via the inlet isolation valve to the aft cargo com partm ent, drivenby an extraction fan. A ir is contro lled by the outlet isolation valve and then goes outboardth ro ug h th e o utflo w va lve.T he cargo ven tila tio n con tro lle r c on tro ls the ope ra tion o f the in le t and outle t is ola tion valv esan d the extractio n fan .W hen th e is ola tio n va lv es a re fu lly o pen, th e e xtra ctio n fa n ope ra te s c on tin uously when th eaircraft is on the ground and during flight.T he contro ller closes the isolation valves and stops the extraction fan w hen :- the flight crew turns the A F T IS O L V A LV E pushbutton sw itch O F F .- T he aft cargo sm oke detection unit detects sm oke.

AFT CARGO COMPARTMENT HEAT INGT h e ven tila tion system for th e a ft ca rg o compa rtm ent uses ho t en gine blee d air ( up streamof the packs), m ixing it w ith the ambient cabin air that flows through the cargocompartment.T he cargo regulating valve regulates the pressure of th is hot air supply, and the trim airva lve, which is mod ulated ele ctrically b y the controller, controls th e flo w.T he c arg o p re ssu re re gu la tin g va lve is p neumatic ally o pe ra te d and e le ctric ally c on tro lle dfrom the HO T A IR pushbutton on the C A R G O HE A T panel.T he hot air is contro lled by the cargo trim air valve w hich is m odulated electrically by thecontroller.T he hot a ir is then m ixed w ith air from the cabin and supplied to the cargo com partm entth ro ugh th e ventila tio n in le t is ola tio n va lv e.A c cording to th e temperature sele ctor d emand, the con troller re gu la te s the amoun t of ho tair added by the trim air valve, until the desired tem perature is reached.I f the in let tem perature exceeds 7 0 C , the controller closes the trim air valve.I f th e inlet temperatu re excee ds 8 8 C , the co ntrolle r in terprets th is as a d uct o ve rh ea t an dclo ses the pressure reg ulating valve. T h is valve th en remains clo se d un til the flig ht crewresets the system by pressing the HO T A IR pushbutton - which it cannot do until thetem perature drops below 7 0 C .



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AIRBeR TR.AINING A IR CO ND /P RE SS NE NT 1 .21 .40 P 4~'~n~~T~R C A R G O S E Q 20 3 I R E V 25FLIGHT CREW OPERATING MANUAL


C A R G O H E A TH O T A IRF A U L T

~"c. . . .oN-eI. . .ooIo. . .NIoIInU~ZC D A FT IS O L V A LV E pb sw

T he sw itch contro ls the aft isolation valves and the extraction fan.A uto : T he inlet and outlet iso lation valves open and the extraction fan runs ifthere is no sm oke detected in the aft cargo bay.O F F T he inlet and outlet iso lation valves and the trim air valve close, theextra ction fan s tops .

F A U LT It : T he light comes on amber associated w ith E C A M caution when eitherinlet or outlet va lve is not in the selected position.o HO T A IR pb sw

A uto T he pressure regulating valve regulates hot air pressure.O F F T he pressure regulating valve closes.F a ult c irc uit is re se t.

R F A U L T I t T he light comes on amber associated w ith E C AM caution when a ductoverhe at is d etecte d ( 8 80 C - 1 9 0 0 F ).T he light goes out when the tem perature drops below 7 0 0 C (1 5 8 0 F ) andO F F is selected. T hen, if the pushbutton is set to on, the system is reset.



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C D Tempera tu re selecto rR - C O LD position: A pproximately 5 C (4 1 F )R - HO T position : A pproximately 2 6 C (7 9 F )R - M iddle position : A pproximately 1 5 C (59 F )R Note: 1 . The carg o compartment tempe ra tu re ma y vary , d ep en din g o n e xte rn al fa cto rsR - - ( fligh t du ra tion, ou ts ide temperatu re ...) .

2 . The actual tem perature in the bulk cargo com partm ent m ay be 1 0 C (1 8 F)lowe r th an th e sele cte d tempe ra tu re .



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AIRBeR TR.AINING A IR C OND /P RE SS NE NT 1 . 2 1 . 4 0 P 6~'~n~~T~R C A R G O S E Q 2 0 9 I R E V 2 6FLIGHT CREW OPERATING MANUAL

I ECAM COND PAGE IR

C O N D

C D C a rgo compartment tempe ra tu reT h is in dica tio n is g re en .o Zone ind ica tionT h is in dica tio n is white .o D uct in le t tempe ra tu reT his is normally green, it becomes amber when T ~ 8 0 C .

R C D I nle t isola tion valveRR

Ve rtic al a nd g re enHo riz on ta l and ambe r

valve is openva lve is close d



54/56



R O u tle t is ola tion valveR Horizontal and green valve is open.R V ertical and amber valve is closed.R C D T rim air va lveR H - Hot (G reen) : valve is open.R C - C old (G reen) : valve is closed.

C D Hot a ir p re ssu re regu la tin g v alv eIn line and greenIn line and am berC ross line and greenC ross line and am ber

valve is open.valve failed ope n.valve norm ally closed with the pushbutton in O N position.valve is closed and the pushbutton in O F F position.



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AIRBeR TR.AINING A IR COND /P R ES SNEN T 1.21.40 P 8~'~n~~T~R CARGO SEQ 200 I REV 23FLIGHT CREW OPERATING MANUALW ARN INGS AND CAUTIONS'"c0 Q Z0 W c : : : . . . . QN I-- 3:'" c : : : I l. . .

. . . . . . . . I--I ~ . . . . ~o 0 0 z : z : : c : : :U) I-- 0 0 3: U) W0 c : : : . . . . 1 1 \ 0 0 I--. . . . . c o0 3: l!:I l!:I . . . . Q l!:I u,:. I l . . . z Z 0 Z c(W W . . . . . . . . WN ~ ~!- I-- I--U) (I)0 . . . . . . . . . .IInU~Z

E /W D : FA ILUR E T IT LE AU RAL M ASTER SO LOCAL FLTPAG E PHASEconditions W ARN ING L IG HTCALLED

WARN I NGINHIBAFT (FW D) CARGO DUCT temperature O VHT S ING LE M ASTER HOT A IRDuct Temperature > 88 C (1 90 F ) CHIM E C AUT CO ND FA ULT ItA FT (FW D) CRG HEAT FAU LTC argo heating controller fault N IL 3,4,5AFT (FW D ) CRG VENT FAU LT

C argo fan fault N IL N IL 7 ,8A FT (FW D) CRG ISO L VA LVE N IL ISOLVA LVECargo isolation valve disagreement FA ULT It



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AIRBeR TR.AINING A IR COND/PRESS /COND P 1~'~n~~T~R

1.21.50ELECTR ICAL SUPPLY SEQ 100 I REV 25FLIGHT CREW OPERATING MANUAL

I BUS EQUIPMENT LIST IR

N O R M E M E R E L E CA C D C A C D C H O TE S S E S S

1 PR IM . AC l DC lP ACK SEC . AC l DC lCONT 2 PR IM . AC 2 DC 2

SEC . AC 2 DC 2A IR CO ND ZONE PR IM . AC l DC lCO NT SEC . AC 2 DC 2

PACK 1 VALVE C LO SURE SHEDPACK 2 VALVE C LO SURE DC 2

RAM A IR IN LET X1 X

PRESS CAB PRESS 2 DC 2CONT M ANUAL C TL DC BATCAB IN FANS 1 AC l DC l2 AC 2 DC 2

AEVC DC l SHEDVENT AV IO NIC FAN S FAN BLOW ER AC l DC lEXTRAC T AC2 SHED

GND COOL UN IT AC 2FAN AC lUNIT< i lCO NTRO L DC l

FWD / VEN T CONT < il SHEDAFT HEAT CONT < il SHED

CARGO VENT /HEAT FANS (S ) < il AC l

Documents

A320-Air Conditioning and Pressurization