3. Job Set-up
__________
Subtask 24-23-34-860-052
A. Aircraft Maintenance Configuration
(1)
In the cockpit, on the overhead panel 25VU and 35VU, make sure that these pushbutton switches are released:
-START,
-APU GEN.
(2)
In the cockpit, make sure that warning notices are in position to tell persons not to operate the pushbutton switches on these overhead panels:
-25VU (APU),
-35VU (ELEC).
Subtask 24-23-34-865-052
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ELEC/GEN1/OFF/BTC1 SPLY 5XU T28 122VU ELEC/APU/GCU 6XS Y25
Subtask 24-23-34-010-051
C. Get Access
(1)
Make sure that the access platform is in position at the access door 811 of the avionics compartment.
(2)
Make sure that the access door 811 is open.
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4. Procedure
_________
(Ref. Fig. 401/TASK 24-23-34-991-001) Subtask 24-23-34-420-050
A. Installation of the GCU
(1)
Remove the blanking caps from the electrical connectors.
(2)
Make sure that the electrical connectors are clean and in the correct condition.
(3)
Clean the component interface and/or the adjacent area.
(4)
Do an inspection of the component interface and/or the adjacent area.
(5)
Put the GCU in position in the rack (6).
(6)
Carefully push the GCU until it is connected to the rack receptacle (5).
(7)
Lift the 2 knurled nuts (1) on the 2 studs (2).
(8) Tighten the 2 knurled nuts (1). Subtask 24-23-34-865-055
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 6XS, 5XU
Subtask 24-23-34-710-050
C. Operational Test of the GCU
(1) Do an operational test of the GCU via the GPCU from the CFDS (Ref. TASK 24-41-00-740-002).
NOTE : As an alternative procedure, do this operational test without
____
the CFDS:
(2) Do an operational test of the GCU without the CFDS:
(a) Do the procedure to energize the electrical circuits with the APU (Ref. TASK 24-41-00-861-002).
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(b)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
(c)
On the ECAM control panel:
-push the ELEC key to get the ELEC system page.
(d)
On the lower ECAM display unit, make sure that the A/C electrical configuration is correct.
(e)
Do the EIS stop procedure
(Ref. TASK 31-60-00-860-002)
(f)
De-energize the electrical circuits supplied from the APU (Ref. TASK 24-41-00-862-002).
5. Close-up
________ Subtask 24-23-34-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the access door 811.
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s).
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GENERATOR - APU (8XS) - REMOVAL/INSTALLATION
____________________________________________ TASK 24-23-51-000-001 Removal of the APU Generator 8XS WARNING : ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE
_______ ENVIRONMENT.
WARNING : LOCK THE MECHANISM OF THE ACCESS DOOR 316AR WITH THE PIP PIN WHEN YOU
_______ OPEN THE ACCESS DOOR. THIS WILL PREVENT INJURY.
WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING : DO NOT LET OIL STAY ON YOUR SKIN FOR A LONG TIME AS IT CAN CAUSE
_______ INJURY.
WARNING : DO NOT CAUSE DAMAGE TO THE THREADS OF THE SET SCREWS WHEN YOU REMOVE
_______ OR INSTALL THE GENERATOR. THE GENERATOR WEIGHS APPROXIMATELY 23kg (50.7lb).
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