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1450 ± 72.5 psi (95 ± 5 bar) (pressure decreasing) and
send a high pressure signal at 1750 psi (120 bar)
(pressure increasing). The pressure switch 2151GN
sends information to the FWC and the Flight Control
System. The pressure switch 10CE-1 sends information
to the Flight Control System only.
TMUHYDJ02-T04 LEVEL 3
EFFECTIVITY 29-12-00 Page 8
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 126
ALL
TMUHYDJ02-P04 LEVEL 3
BLUE SYSTEM COMPONENTS
EFFECTIVITY 29-12-00 Page 9
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 127
ALL
BLUE SYSTEM COMPONENTS
PRESSURE TRANSDUCER
IDENTIFICATION
FIN: 2065GN
LOCATION
ZONE: 195
DESCRIPTION
The pressure transducer measures the system pressure
and sends signals to the ELAC 1/2 for Flight Control
System and to the SDAC for ECAM display. The transducer
is a sealed unit.
HP FILTER
IDENTIFICATION
FIN: 2048GM
LOCATION
ZONE: 195
DESCRIPTION
The filter element is of the replaceable type. It
cannot be cleaned. The filter also includes a clogging
indicator which has to be reset manually after
replacement of the filter element.
An anti-spill device is also included in the filter
in order to prevent any hydraulic fluid flow when the
filter element and the bowl are removed.
ACCUMULATOR
IDENTIFICATION
FIN: 2070GM
LOCATION
ZONE: 195
DESCRIPTION
The accumulator is of the cylindrical type with an
internal bladder.
The metal body has an outer layer of kevlar to make
it stronger.
The accumulator is precharged with nitrogen to 1885
psi (130 bar) at 20°C.
The bladder is made of rubber and isolates the nitrogen
gas from the hydraulic fluid. It holds 1 liter
(0,26 US gal) of usable fluid when it is full.
TMUHYDJ02-T05 LEVEL 3
EFFECTIVITY 29-12-00 Page 10
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 128
ALL
TMUHYDJ02-P05 LEVEL 3
BLUE SYSTEM COMPONENTS
EFFECTIVITY 29-12-00 Page 11
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 129
ALL
BLUE SYSTEM COMPONENTS
ELECTRIC PUMP PROTECTION
IDENTIFICATION
FIN: 2706GJ, 2707GJ
LOCATION
ZONE: 126
DESCRIPTION
A current transformer and a phase unbalance detector
provide protection if there is a fault in the electric
pump motor or in the supply. The current transformer
compares the flow of current in each phase of the AC
motor supply.
If a difference is detected, the current transformer
sends a signal to the phase unbalance detector which
stops the pump motor.
A test pushbutton is provided on the phase unbalance
detector to simulate current transformer operation.
An indicator light comes on to show that both units
have operated correctly.
TMUHYDJ02-T06 LEVEL 3
EFFECTIVITY 29-12-00 Page 12
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 130
ALL
TMUHYDJ02-P06 LEVEL 3
BLUE SYSTEM COMPONENTS
EFFECTIVITY 29-12-00 Page 13
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 131
ALL
BLUE SYSTEM COMPONENTS
ELECTRIC PUMP
IDENTIFICATION
FIN: 2075GJ
LOCATION
ZONE: 195
DESCRIPTION
The electric pump of the blue hydraulic system is
installed in the blue hydraulic compartment. It is
interchangeable with the yellow electric pump.
CASE DRAIN FILTER
IDENTIFICATION
FIN: 2084GM
LOCATION
ZONE: 195
DESCRIPTION
The case drain filter is equipped with a pop-out
clogging indicator. It operates when the differential
pressure across the filter is 87 ± 8.7psi (6 ± 0.6 bar).
There is no by-pass device if the filter element is
clogged. The filtration rating is 15 microns.
TMUHYDJ02-T07 LEVEL 3
EFFECTIVITY 29-12-00 Page 14
Nov 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 132
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