Airbus

A330-200/300
Differences_to_ Rev.-ID: 1NOV2013

ATA 29
Author: TM
For Training Purposes Only
ELTT Release: Dec. 02, 2013

Hydraulic Power

General Familiarization
Level 1

A330_29_L1
Training Manual

For training purposes and internal use only.

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Revision Identification:
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this cover is binding for the complete Training Manual. of the individual pages, are for information about the Manual contains a complete set of all necessary pages
latest revision of that page(s) only. in the latest finalized revision.
Lufthansa Technical Training
HYDRAULIC A330−200/300

29−00

ATA 29 HYDRAULIC
FOR TRAINING PURPOSES ONLY!

FRA US/T-2 ThM Mar 25, 2009 *ATA DOC Page 1

Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

29−00 GENERAL
HYDRAULIC SYSTEM PRESENTATION
General They supply each system at a nominal pressure of 3000 psi. They are operated
The hydraulic system consists of three independent hydraulic systems: by their pushbutton switches on the overhead HYD panel.
Green, Blue and Yellow. In normal operation they are powered by Engine
Electric Pump
Driven Pumps (EDPs) at a nominal pressure of 3000 psi.
Auxiliary power is provided by three identical electric pumps, one for each
Auxiliary power is provided by electrically driven pumps.
system. They are controlled by the Hydraulic System Monitoring Unit (HSMU)
A Ram Air Turbine (RAT) is provided in the Green system for emergency. and normally commanded to operate by their pushbutton switches on the
A hand pump is provided in the Yellow system for cargo door manual overhead HYD panel.
operation. The Green and the Yellow system electric pump can be started automatically
The operation and indications of the hydraulic systems are monitored by a by the HSMU in case of respective engine failures under certain conditions and
Hydraulic System Monitoring Unit (HSMU). for cargo door operation.
The hydraulic fluid is maintained clean by filters. The pumps are supplied by 3−phase 115 VAC.
Reservoir Ram Air Turbine
Each hydraulic system has its own reservoir. It supplies hydraulic fluid to the A Ram Air Turbine (RAT), located in the number four flap track fairing on the
system pumps, and is pneumatically pressurized. right wing, pressurizes the green system in emergency conditions.
The Green reservoir is located in the main landing gear bay. The Blue and It automatically extends in flight, when the aircraft speed is higher than 100kts,
Yellow reservoirs are located forward of the landing gear bay in the center in case of:
fuselage section. S all engines failure, or
All three reservoirs are filled from the Green ground service panel. S low level in green and yellow reservoirs, or
Fire Shut−off Valve S low level in green and blue reservoirs
Each hydraulic system has a fire shut−off valve fitted in the suction line The Ram Air Turbine stowage control panel is located on the yellow ground
between the reservoir and the engine driven pump. service panel.
FOR TRAINING PURPOSES ONLY!

They are operated by their respective engine fire pushbutton switches to isolate Hand Pump
the engine driven pump in case of engine fire or suction line rupture.
A hand pump is used for operating the cargo door when electrical power is not
Engine 1 and engine 2 fire shut−off valves are automatically closed by the available.
HSMU in case of green reservoir low level.
It is located on the Yellow ground service panel.
This enables isolation of a possible leak in the engine pylon, and restoration of
the green system using the Ram Air Turbine (RAT), if necessary.
Engine Driven Pump
Engine Driven Pumps (EDPs) are located on the accessory gearbox of each
engine. They are of the variable displacement type.

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Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

G LEAK B LEAK Y LEAK

MEASUREMENT MEASUREMENT MEASUREMENT
VALVE VALVE VALVE

PRESSURE
TRANSDUCER G SYSTEM B SYSTEM Y SYSTEM
AKKUMULATOR AKKUMULATOR AKKUMULATOR

M
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
M M TO CARGO

ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
DOORS
ELEC T ELEC T ELEC T RAT

Ó ÓÓ Ó Ó
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ ÓÓ
PUMP PUMP PUMP

Ó
ENG 1 PUMP

Ó ÓÓ
ÓÓ
ÓÓÓÓÓÓ
Ó
Ó Ó Ó
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓ
ÓÓ
ENG 1 PUMP

ÓÓ
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ENG 2 PUMP ENG 2 PUMP

ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ
ENG 1 FIRE
ÓÓÓÓÓÓÓÓÓ ENG 1 FIRE ENG 2 FIRE HAND ENG 2 FIRE

ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
SHUTOFF SHUTOFF SHUTOFF PUMP SHUTOFF
VALVE VALVE VALVE VALVE

ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
FOR TRAINING PURPOSES ONLY!

ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓ PRESSURE SWITCHES
RESERVOIR RESERVOIR RESERVOIR
GREEN BLUE YELLOW

Figure 1 Hydraulic System Architecture

FRA US/T-2 ThM Mar 25, 2009 1*|Sys Pres|L1 Page 3
Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00
LEAK MEASUREMENT VALVE
A leak measurement valve is positioned in each circuit upstream of the primary
flight controls.
Used for the leakage measurement of each circuit, they are closed, on ground
only, by operation of the leak measurement valve pushbutton switches on the
overhead HYD maintenance panel.
This operation is inhibited in flight.

ACCUMULATOR
One accumulator is fitted in each system to damp out engine driven pump
pulsations and to maintain a constant pressure during normal operation to
cover transient demands.
PRESSURE MONITORING
Pressure in the system is monitored by
S Pressure switches which detect any abnormal pressure
S pressure transmitters for indications on the ECAM.
HSMU
The Hydraulic System Monitoring Unit (HSMU) monitors each of the hydraulic
systems and provides the associated indications.
FOR TRAINING PURPOSES ONLY!

FRA US/T-2 ThM Mar 25, 2009 1*|Sys Pres|L1 Page 4

Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

HYD SYS PRESS

ATA 27 FLIGHT CONTROLS FLIGHT
HYD SYS PRESS WARNING
COMPUTER

HYD SYS PRESS

ELEC PUMP PRESS

ÓÓÓÓÓÓÓÓÓÓ
ELEC PUMP OVHT
M

ÓÓÓÓÓÓÓÓÓÓ
ENG PUMP PRESS ECAM
T

Ó
ÓÓÓÓÓÓÓÓÓÓ RSVR HYD QUANTITY

Ó
ÓÓÓÓÓÓÓÓÓÓ FAULT LIGHTS
SYSTEM DATA
HYDRAULIC AQUISITION

Ó
ÓÓÓÓÓÓÓÓÓÓ SYSTEM AUTOMATIC CONTROL CONCENTRATOR
OF ELEC PUMPS AND

Ó
ÓÓÓÓÓÓÓÓÓÓ
MONITIORING RAT
UNIT

ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ
MANUAL CONTROL
ELEC PUMPS
CAUTION

ÓÓÓÓÓÓÓÓÓÓ
LEAK MEASUREMENT
FOR TRAINING PURPOSES ONLY!

VALVES CONTROL

ÓÓÓÓÓÓÓÓÓÓ GREEN FIRE SHUT-OFF

ÓÓÓÓÓÓÓÓÓÓ
RSVR TEMPERATURE VALVE CLOSURE

ÓÓÓÓÓÓÓÓÓÓ
RSVR HYD QUANTITY
RSVR LOW LEVEL

ÓÓÓÓÓÓÓÓÓÓ RSVR AIR PRESS

Figure 2 Hydraulic System Monitoring

FRA US/T-2 ThM Mar 25, 2009 1*|Sys Pres|L1 Page 5
Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

SYSTEM USERS
The flight control supply is evenly divided between the three hydraulic systems.
Redundancy provides at least two different power sources for most of the
hydraulic system users.
In the event of low pressure, large power consumers are isolated to give
priority to the primary flight controls.
The Constant Speed Motor/Generator (CSM/G) in the Green System provides
electrical power in emergency conditions.
A hand pump in the Yellow System is provided for the manual operation of the
cargo doors.
FOR TRAINING PURPOSES ONLY!

FRA US/T-2 ThM Mar 25, 2009 2*|Users|L1 Page 6

Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

GREEN BLUE YELLOW

ENG 1 PUMP ENG PUMP ENG PUMP ENG PUMP

ELEC PUMP RAT ELEC PUMP ELEC PUMP HAND PUMP

(not on GE engine) (not on GE engine)

REVERSERS ENGINE # 1 ENGINE # 2

PRESSURE TRANSDUCER

LEAK MEASUREMENT VALVE

SYSTEM ACCUMULATOR
PRESSURE SWITCHES

SPOILERS SPOILERS 1+5 SPOILERS 2+3 SPOILERS 4+6

SLATS WTB SLATS WTB
WING TIP BRAKES
FLAPS WTB FLAPS WTB
AILERONS INBOARD L/R INBOARD L/R
SV OUTBOARD L/R OUTBOARD L/R
YAW DAMPER 1 [non enhanced A/C only] YAW DAMPER 2
RUDDER
SV SERVO 1 SERVO 2 SERVO 3
BYDU [non enhanced A/C] / BPS [enhanced A/C] ELEC. GENERATOR ELEC. GENERATOR
ELEVATOR ELEVATOR L/R ELEVATOR L ELEVATOR R
FOR TRAINING PURPOSES ONLY!

THS PMV PITCH TRIM 2 PMV PITCH TRIM 1

SLATS PMV SLATS MOTOR PMV SLATS MOTOR

FLAPS PMV FLAPS MOTOR PMV FLAPS MOTOR
NORMAL BRAKES ALTN. BRAKES PV = Priority Valve
BRAKE
ACCUS PMV = Pressure Maintaining Valve
LANDING GEAR NORMAL EXT./RET. PARKING BRAKES SV = Safety Valve
PV N.W. STEERING
ELEC. POWER EMER GEN. (CSM/G)
CARGO DOORS FWD/AFT OP./CL.

Figure 3 Hydraulic System Users

FRA US/T-2 ThM Mar 25, 2009 2*|Users|L1 Page 7
Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

SYSTEM CONTROL AND INDICATING

ENGINE PUMP Pushbutton Switches (guarded) Green/Blue/Yellow ELEC PUMP ON Pushbutton Switches (guarded)
In normal conditions the respective engine driven pump pressurizes the system Momentary switch; First pulse ⇒ The pump operates, provided the related
when the engine runs. ELEC PUMP P/B Sw is selected IN; second pulse ⇒ the pump stops.
OFF (white) illuminates when the P/B Sw is released OUT; the respective The blue ON legend in this P/B Sw indicates the respective electric pump
pump is depressurized, hydraulic power generation stops. operating.
FAULT illuminates amber if respective engine is running and P/B Sw is
Failure Indication
selected IN, in case of respective:
When selected IN, the FAULT legend in the ELEC PUMP P/B Switches
S RSVR LO LVL
illuminates amber in case of respective:
S RSVR OVHT
S RSVR LO LVL
S RSVR LO AIR PR
S RSVR OVHT
S ENG PUMP LO PR
S RSVR LO AIR PR
In RSVR OVHT condition, the FAULT light remains on, regardless the P/B Sw
S ELEC PUMP LO PR
position, as long as the OVHT is present.
S ELEC PUMP OVHT
Green/Blue/Yellow ELEC PUMP Pushbutton Switches In RSVR OVHT condition, the FAULT light remains on, regardless the P/B Sw
S AUTO (P/B Sw IN, no lights) ⇒ The electric pump can be started by the position, as long as the OVHT is present.
HSMU: In ELEC PUMP OVHT condition the FAULT light remains on permanently,
− Through a manual demand by momentary operation of the related regardless the P/B Sw position, as the respective electric pump is latched
ELEC PUMP ON P/B Sw. de-ergized.
− for the Green and the Yellow system electric pump only:
RAT MAN ON Pushbutton Switch
Automatically in case of respective engine failures under certain
Pressing-in the RAT MAN ON pushbutton switch causes the Ram Air Turbine
conditions and, in addition for the Yellow system electric pump, for cargo
(RAT) to extend.
door operation.
S OFF (P/B Sw OUT, white OFF legend on) ⇒ This action cancels all pump WARNING: THE RAT CAN BE DEPLOYED MANUALLY AT ANY TIME!
FOR TRAINING PURPOSES ONLY!

operation functions. MAINTENANCE ACTION IS NEEDED TO STOW IT.

In this P/B Sw position, the respective electric pump is de-energized, so it LEAK MEASUREMENT VALVE Pushbutton Switches
can no longer be started by the HSMU.
OFF (white) illuminates when the P/B Sw is released OUT; The respective
Pushing the related ELEC PUMP ON P/B Sw does not have any effect. electro-hydraulic valve closes and hydraulic supply to primary flight controls is
isolated.
NOTE: The leak measurement system is inhibit in flight!

FRA US/T-2 ThM Mar 25, 2009 3*|Cont&Ind|L1 Page 8

Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

MAINTENANCE PANEL

CONFIG. 1

HYDRAULIC CONTROL PANEL CONFIG. 2

FOR TRAINING PURPOSES ONLY!

WARNING LIGHTS

AURAL WARNINGS

ECAM DISPLAYS

Figure 4 Hydraulic System Control & Indicating

FRA US/T-2 ThM Mar 25, 2009 3*|Cont&Ind|L1 Page 9
Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

ECAM PAGE PRESENTATION

DIFFERENT LEVELS
NOTICE: As the three systems have the same symbols
(except the RAT, which is in the Green system only), GREEN BLUE YELLOW
the ECAM page presentation is based on the Green
system display. MAXIMUM GAGEABLE LEVEL > 47 L > 32 L > 21 L
NORMAL FILLING LEVEL RANGE 6L 5L 4L
ADVISORY LEVEL 17 L 13 L 8L
RESERVOIR LOW LEVEL WARNING 8L 5L 5L

GREEN normally. The movable index represents the

actual fluid level. It pulses GREEN when the fluid
level is below the advisory limit.
It becomes AMBER when the fluid is at low level.
It is replaced by XX, if the fluid level information
is not available from the sensor via SDAC

GREEN Normal filling range, permanently displayed.

The indication is corrected for fluid
temperature effects according to a linear law

WHITE normally. Abnormal level limit

(Green System only).
 
Replaced by two AMBER bars,
to indicate the Green reservoir
underfilled,
FOR TRAINING PURPOSES ONLY!

AMBER Reservoir low level limit; permanently displayed.


OVHT appears AMBER if the return
hydraulic fluid temperature at the entry of
the respective reservoir is > 95_C
LO AIR PRESS appears AMBER if the
respective reservoir air pressure drops
down to < 22 psi

FRA US/T-2 ThM Mar 25, 2009 4*|ECAM|L1 Page 10

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HYDRAULIC A330−200/300
GENERAL
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M
ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ
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ÓÓÓÓÓÓÓÓÓÓ
Ó  
ÓÓÓÓÓÓÓÓÓÓ
ÓÓ
ÓÓÓÓÓÓÓÓÓÓ
Ó ÓÓÓÓÓÓÓÓÓÓ
ÓÓ
ÓÓÓÓÓÓÓÓÓÓ
Ó ÓÓÓÓÓÓÓÓÓÓ
ÓÓ
ÓÓÓÓÓÓÓÓÓÓ  
ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ 
ÓÓÓÓÓÓÓÓÓÓ
FOR TRAINING PURPOSES ONLY!

ÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ      
ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ

 




 H    %

ÓÓÓÓÓÓÓÓÓÓ
Figure 5 Hydraulic System Indication (1)
FRA US/T-2 ThM Mar 25, 2009 4*|ECAM|L1 Page 11
Lufthansa Technical Training
HYDRAULIC A330−200/300
GENERAL
29−00

FIRE SHUTOFF VALVE ELECTRIC PUMP

GREEN Valve open or not fully closed WHITE Electric pump not running

AMBER Elec pump P/B Sw (AUTO for Green and

AMBER Valve fully Yellow, STBY for Blue) in OFF position
closed
GREEN Electric pump running and delivering normal
pressure
AMBER Valve status information not available
AMBER Electric pump running and delivering a pressure
< 1450 psi
GREEN
ENGINE DRIVEN PUMP AMBER Electric pump status information not available

GREEN Associated P/B Sw ON and pump normal pressure

 
AMBER Associated P/B Sw OFF
WHITE normally; becomes AMBER if associated power
supply fails
AMBER Associated P/B Sw ON and pump  
 
FOR TRAINING PURPOSES ONLY!

delivery pressure < 1750 psi

Appears AMBER when electric pump temperature > 193_C

AMBER P/B Sw status information not availiable

GREEN

WHITE Engine identification; becomes AMBER when

  associated engine N2 below idle

FRA US/T-2 ThM Mar 25, 2009 4*|ECAM|L1 Page 12

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GENERAL
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ÓÓÓÓÓÓÓÓÓÓ
T
  ÓÓÓÓÓÓÓÓÓÓ
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ÓÓÓÓÓÓÓÓÓÓ
ÓÓ
ÓÓÓÓÓÓÓÓÓÓ
Ó ÓÓÓÓÓÓÓÓÓÓ
ÓÓ
ÓÓÓÓÓÓÓÓÓÓ
Ó ÓÓÓÓÓÓÓÓÓÓ
ÓÓ
ÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
FOR TRAINING PURPOSES ONLY!

ÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ      
ÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓ

 




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ÓÓÓÓÓÓÓÓÓÓ
Figure 6 Hydraulic System Indication (2)
FRA US/T-2 ThM Mar 25, 2009 4*|ECAM|L1 Page 13
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GENERAL
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SYSTEM PRESSURE RAM AIR TURBINE

ALL RAT fully stowed and no residual

 GREEN System pressure is > 1750 psi (increasing)  WHITE pressure at the RAT actuator

 AMBER System pressure is < 1450 psi (decreasing) WHITE  AMBER RAT fully stowed, but
retraction jack is pressurized

ALL RAT not fully stowed and RAT

AMBER System pressure information not available  AMBER rotation speed < 3000 RPM

GREEN  WHITE RAT not fully stowed and RAT

 rotation speed > 3000 RPM
! GREEN RPM indication appears when
SYSTEM STATUS
rotation speed is > 100 RPM

GREEN Hydraulic pressure to primary flight controls AMBER  WHITE XX appears when the RAT status
is > 1750 psi (pressure increasing) information is not available
 
WHITE

ALL Hydraulic pressure to primary flight controls

FOR TRAINING PURPOSES ONLY!

  AMBER is < 1450 psi (pressure decreasing)

AMBER Hydraulic pressure information not availiable

 

WHITE

FRA US/T-2 ThM Mar 25, 2009 4*|ECAM|L1 Page 14

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GENERAL
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!

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ÓÓÓÓÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓÓÓÓ
FOR TRAINING PURPOSES ONLY!

ÓÓÓÓÓÓÓÓÓÓÓ
ÓÓÓÓÓÓÓÓÓÓÓ      
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Figure 7 Hydraulic System Indication (3)

FRA US/T-2 ThM Mar 25, 2009 4*|ECAM|L1 Page 15
Lufthansa Technical Training
HYDRAULIC A330−200/300
GREEN MAIN HYDRAULIC POWER
29−11

GREEN SYSTEM GROUND SERVICE PANEL

It is located in the left aft section of the belly fairing and comprises the Also most of the components of the reservoir filling system are installed on the
equipments below: Green system ground service panel as follows:
S a reservoir filling self-sealing ground connector
GROUND CONNECTORS
S a reservoir filling valve
S a delivery self-sealing ground connector
S a reservoir filling hand pump
S a suction self-sealing ground connector
S a hand pump lever
The self-sealing connectors are easily accessible and installed on each
system for the connection of the ground servicing unit on which the mating S a reservoir filling filter
coupling half is attached. S a reservoir filling manual selector valve
There are blanking caps, which are attached to the bodies of the couplings S a hydraulic reservoir filling adjustment indicator
with cables. S a reservoir filling hose
POWER ACCUMULATOR PRESSURE GAGE
The pressure gage is a direct-reading dial-indicator type. It is attached to the
gas manifold 5145JM1, on the Green ground service panel. The gage shows
the pressure in the accumulator. It indicates up to 3500 PSI in steps of 100 psi.

NITROGEN CHARGING GROUND CONNECTOR

It is used to charge the accumulator with nitrogen at 130 bars. It is installed on
the gas manifold in the same way as the power accumulator pressure gage. It
is a manually operated plunger type valve with a conical metal seal. The
opening and closing of the metal seal is effected through the rotation of the nut
which moves the plunger. A brass cap is mounted to prevent external
contamination of the valve.

MANUAL DEPRESSURIZATION VALVE

FOR TRAINING PURPOSES ONLY!

It is connected to the hydraulic reservoir with pipes. Each hydraulic reservoir

can be depressurized individually.
Normally closed (under the action of a spring), this manual operated valve,
when opened, releases the air pressure from the related hydraulic reservoir.
This has to be done prior any pipe opening for maintenance.

FRA US/T-2 ThM Mar 25, 2009 16*|G Svce Pnl|L1 Page 16
Lufthansa Technical Training
HYDRAULIC A330−200/300
GREEN MAIN HYDRAULIC POWER
29−11

POWER ACCU
PRESSURE GAGE
A POWER ACCU
SERVICE CONNECTION

RESERVOIR
QUANTITY
INDICATOR TELESCOPIC LEVER

SELECTOR
VALVE
GROUND CONNECTOR
RESERVOIR FILLING

FILLING HAND PUMP AND

FILTER FILLING VALVE

ÎÎÎÎ
ÎÎÎÎ
GROUND
CONNECTION
FOR TRAINING PURPOSES ONLY!

ÎÎÎÎ
ÎÎÎÎ ÎÎÎÎ SUCTION

ÎÎÎÎ ÎÎÎÎ
ÎÎÎÎ
GROUND
CONNECTION

ÎÎÎÎ DELIVERY

MANUAL
A DEPRESSURIZATION
VALVE

Figure 8 Ground Service Panel - Green System

FRA US/T-2 ThM Mar 25, 2009 16*|G Svce Pnl|L1 Page 17
Lufthansa Technical Training
HYDRAULIC A330−200/300
BLUE MAIN HYDRAULIC POWER
29−12

BLUE SYSTEM GROUND SERVICE PANEL

It is located in the left forward section of the belly fairing and comprises the
equipment below:
S one delivery self−sealing ground connector
S one suction self−sealing ground connector
S a power accumulator pressure−gage
S a power accumulator nitrogen−charging ground connector
S two reservoir pressurization ground connectors
− a single one for pressurizing the Green reservoir
− another one for pressurizing the Blue and the Yellow reservoirs
S a manual depressurization valve
S two pressure gages and two nitrogen charging valves corresponding to the
two brake accumulators (ATA 32).
FOR TRAINING PURPOSES ONLY!

FRA US/T-2 ThM Mar 25, 2009 19*|B Svce Pnl|L1 Page 18
Lufthansa Technical Training
HYDRAULIC A330−200/300
BLUE MAIN HYDRAULIC POWER
29−12

BRAKE ACCU
SERVICE
A MANUAL
DEPRESSURIZATION
CONNECTIONS VALVE
(ATA 32)

ÎÎÎÎ
ÎÎÎÎ
ÎÎÎÎ
GROUND
CONNECTION

ÎÎÎÎ
BRAKE ACCU DELIVERY
PRESSURE GAGES
(ATA 32)
ÎÎÎÎ

ÎÎÎÎ
ÎÎÎÎ
GROUND
CONNECTION
POWER ACCU
ÎÎÎÎ SUCTION

ÎÎÎÎ
PRESSURE GAGE
FOR TRAINING PURPOSES ONLY!

POWER ACCU
SERVICE
CONNECTION

GROUND CONNECTION GROUND CONNECTION

A BLUE/YELLOW GREEN RESERVOIR
RESERVOIR PRESSURE PRESSURE

Figure 9 Ground Service Panel - Blue System

FRA US/T-2 ThM Mar 25, 2009 19*|B Svce Pnl|L1 Page 19
Lufthansa Technical Training
HYDRAULIC A330−200/300
YELLOW MAIN HYDRAULIC POWER
29−13

YELLOW SYSTEM GROUND SERVICE PANEL

It is located in the right forward section of the belly fairing and comprises the
equipments below:
S one delivery self−sealing ground connector
S one suction self−sealing ground connector
S one power accumulator pressure−gage
S one power accumulator nitrogen−charging ground connector
S the hand pump
S a manual depressurization valve
S the cargo door manual/electrical selector valve (ATA 52)
S the RAT ground control panel
FOR TRAINING PURPOSES ONLY!

FRA US/T-2 ThM Mar 25, 2009 22*|Y Svce Pnl|L1 Page 20
Lufthansa Technical Training
HYDRAULIC A330−200/300
YELLOW MAIN HYDRAULIC POWER
29−13

A
RAT STOW PANEL HAND PUMP CARGO DOOR
CARGO DOORS SELECTOR MANIFOLD
(ATA 52)

GROUND
CONNECTION
DELIVERY
ÎÎÎÎ
ÎÎÎÎ ÎÎÎÎÎ
ÎÎÎÎÎ
ÎÎÎÎ ÎÎÎÎÎ GROUND

ÎÎÎÎ ÎÎÎÎÎ
CONNECTION
SUCTION

ÎÎÎÎÎ
FOR TRAINING PURPOSES ONLY!

POWER ACCU MANUAL

SERVICE POWER ACCU DEPRESSURIZATION
A CONNECTION PRESSURE GAGE VALVE

Figure 10 Ground Service Panel - Yellow System

FRA US/T-2 ThM Mar 25, 2009 22*|Y Svce Pnl|L1 Page 21
A330 29 L1

TABLE OF CONTENTS
ATA 29 HYDRAULIC . . . . . . . . . . . . . . . . . . . . . . . 1
29−00 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HYDRAULIC SYSTEM PRESENTATION . . . . . . . . . . . . . 2
SYSTEM USERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SYSTEM CONTROL AND INDICATING . . . . . . . . . . . . . 8
ECAM PAGE PRESENTATION . . . . . . . . . . . . . . . . . . . . . 10
GREEN SYSTEM GROUND SERVICE PANEL . . . . . . . 16
BLUE SYSTEM GROUND SERVICE PANEL . . . . . . . . . 18
YELLOW SYSTEM GROUND SERVICE PANEL . . . . . . 20

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TABLE OF CONTENTS

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A330 29 L1

TABLE OF FIGURES
Figure 1 Hydraulic System Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 2 Hydraulic System Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3 Hydraulic System Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4 Hydraulic System Control & Indicating . . . . . . . . . . . . . . . . . . . . 9
Figure 5 Hydraulic System Indication (1) . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6 Hydraulic System Indication (2) . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7 Hydraulic System Indication (3) . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8 Ground Service Panel - Green System . . . . . . . . . . . . . . . . . . . 17
Figure 9 Ground Service Panel - Blue System . . . . . . . . . . . . . . . . . . . . . 19
Figure 10 Ground Service Panel - Yellow System . . . . . . . . . . . . . . . . . . 21

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TABLE OF FIGURES

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A330 29 L1

TABLE OF FIGURES

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A330 29 L1

TABLE OF FIGURES

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