Subtask 49-51-51-710-050
D. Test the APU Bleed Air System.
(1) Start and operate the APU (Ref. TASK 49-00-00-860-003).
NOTE : Make sure that the ADIRS is available (Ref. TASK 34-10-00-860-
____ 002). If the ADIRU 2 is selected OFF or not available the APU Bleed Pressure indication is replaced by amber 'XX'.
(2)
On the AIR COND panel 30VU, make sure that the X-BLEED switch is in the AUTO position.
(3)
Do these steps:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ECAM control panel 11VU: - push the BLEED pushbutton switch. On the ECAM lower display unit:- the BLEED page comes on.
2. On the AIR COND panel 30VU: - push the APU BLEED switch to the ON position. On the AIR COND panel 30VU:- the blue ON light in the APU BLEEDswitch comes on. On the ECAM lower display unit: - the X-BLEED valve indication shows
open. - the APU BLEED valve indication shows
open.
3. On the AIR COND panel 30VU: - push the PACK 1 and PACK 2 pushbutton switches to the on position. On the ECAM lower display unit:- the system operation pressure isdisplayed. (It must have a toleranceof 0.689 bar (9.9930 psi) to 2.068 bar (29.9937 psi)).
4. On the AIR COND panel 30VU: On the AIR COND panel 30VU:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
- push the PACK 1 and the PACK 2 pushbutton switches to the OFF position. - the OFF lights in the PACK 1 and PACK2 pushbutton switches come on.
5. On the AIR COND panel 30VU: - push the APU BLEED switch to the off position. On the AIR COND panel 30VU:- the blue ON light goes off in the APUBLEED switch. On the ECAM lower display unit: - the APU BLEED valve indication shows
closed.
- the X-BLEED valve indication shows
closed.
(4)
Examine the bleed load control valve connections for leaks (Ref. TASK 49-00-00-790-004). There must be no air leakage. The position indicator on the valve must indicate closed.
(5)
Shut-down the APU (Ref. TASK 49-00-00-860-004).
5. Close-up
________ Subtask 49-51-51-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Set the LIGHT control switch 11LJ to the off position.
(3)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(4)
Remove the access platform(s).
(5)
Remove the warning notice(s).
Subtask 49-51-51-865-062
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
Subtask 49-51-51-860-052
C. Aircraft Maintenance Configuration
(1)
Pressurize the reservoirs of the hydraulic systems.
(Ref. TASK 29-14-00-614-002).
(2)
De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
(3)
Remove the warning notice(s).
VALVE - LOAD CONTROL - REMOVAL/INSTALLATION
___________________________________________ TASK 49-51-51-000-004 Removal of the Load Control Valve (8050KM) (131-9(A)) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific blanking covers
No specific circuit breaker(s) safety clip(s)
No specific access platform 3.5 m (11 ft. 6 in.)
B. Referenced Information 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 机载辅助动力 AIRBORNE AUXILIARY POWER5(29)
