TASK 29-12-00-710-002
Operational Test of the Phase Unbalance Detector (2707GJ) and the Current
Transformer (2706GJ) of the Blue Hydraulic System
1. Reason for the Job
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Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific access platform 2.5 m (8 ft. 2 in.)
B. Referenced Information
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REFERENCE DESIGNATION
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12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
the Ground Connector
31-60-00-860-001 EIS Start Procedure
31-60-00-860-002 EIS Stop Procedure
R 52-41-00-010-002 Open the Avionics Compartment Doors for Access
R 52-41-00-410-002 Close the Avionics Compartment Doors after Access 29-12-00-991-001 Fig. 501
3. Job Set-up
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Subtask 29-12-00-865-051
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 123VU B HYD/ELEC PUMP 2701GJ AB09
Subtask 29-12-00-010-050
B. Get Access
(1) Put the access platform in position at the access door 822.
R (2) Open the access door 822 (Ref. TASK 52-41-00-010-002). Subtask 29-12-00-860-052
C. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
(3)
On the ECAM control panel on the center pedestal, press the HYD pushbutton switch (P/BSW). Make sure that the HYD page is shown on the ECAM lower DU.
(4)
Make sure that the ECAM does not show any of these conditions:
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Low air pressure in the Blue reservoir,
-
Low fluid level in the Blue reservoir.
(5)
If necessary, pressurize the reservoir (Ref. TASK 29-14-00-614-002).
(6)
If necessary, add fluid to the reservoir (Ref. TASK 12-12-29-611-001).
(7)
On the overhead panel 40VU, make sure that the BLUE/ELEC PUMP P/BSW is set to AUTO (FAULT and OFF legends not on).
4. Procedure
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(Ref. Fig. 501/TASK 29-12-00-991-001)
Subtask 29-12-00-710-051
A. Do this test: WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
Phase Unbalance Detector
Figure 501/TASK 29-12-00-991-001
1EFF : ALL 1 29-12-00 Page 507
1 1 Feb 01/98
1 1
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WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE
_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On panel 50VU:
-push the BLUE PUMP OVRD P/BSW.
2. On the phase unbalance detector:
-press and hold the TEST P/B.
3. On the phase unbalance detector:
-release the TEST P/B.
4. On the overhead panel 40VU:
-push the BLUE ELEC PUMP P/BSW.
On panel 50VU:
-the ON legend of the BLUE PUMP OVRD P/BSW comes on.
The electric pump of the Blue hydraulic system starts.
On the ECAM lower DU:
-
the BLUE hydraulic system is pressurized to approximately 3000 psi.
On the phase unbalance detector:
-
the test indicator light comes on.
The electric pump of the Blue hydraulic system stops.
On the overhead panel 40VU:
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the BLUE ELECT PUMP/FAULT light comes on.
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