Check of System Pressure Indication on the ECAM Display Unit

TASK 29-30-00-200-001-A
Check of System Pressure Indication on the ECAM Display Unit

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB, 196BB

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
Hydraulic System Pressure and Quantity Indication on ECAM

3. Job Set-up
Subtask 29-30-00-010-050-A

A. Get Access
(1) Open the access panels 195BB 196BB.
(2) Open one main door of the main landing gear (Ref. AMM TASK 32-12-00-010-001).

Subtask 29-30-00-860-054-A

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) Push the HYD pushbutton on the ECAM control panel to select the HYD page.
(4) Pressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-23-00-863-001), (Ref. AMM TASK 29-10-00-863-003).

4. Procedure
Subtask 29-30-00-210-050-A

A. Check of the System Pressure Indication
(1) Refer to the pressure indication for the three systems shown on the ECAM display unit.
(2) Compare the value of the system pressure shown on the ECAM display unit with that shown on the pressure gage of the related system accumulator. The two indications for each system must show approximately the same pressure.

NOTE: Because of tolerances, a difference of up to 150 psi between the two values is possible.

5. Close-up
Subtask 29-30-00-860-055-B

A. Put the aircraft back to the serviceable condition.
(1) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-23-00-864-001), (Ref. AMM TASK 29-10-00-864-003).

NOTE: When the hydraulic pressure supply stops, the pressure decreases quickly to approximately 700 psi / 50 bar. From this value the pressure decreases very slowly to zero (approximately 15 minutes).

(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 29-30-00-410-051-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the main door of the main gear (Ref. AMM TASK 32-12-00-410-001).
(3) Close the access panels 195BB 196BB.

[Rev.10 from 2021] 2026.04.01 08:01:18 UTC