A. Close Access
(1)
Set the air conditioned inlet valve (21HQ) to the closed position (Ref. Fig. 404/TASK 21-26-00-991-009)
(2)
Make sure that the work area is clean and clear of tool(s) and other items.
(3)
Close the access door 824.
(4)
Remove the access platform(s).
(5) Remove the warning notice(s). Subtask 21-26-00-862-064
B. De-energize the ground service network (Ref. TASK 24-42-00-862-001).
1EFF : ALL 1 21-26-00Page 441 1 1 Aug 01/05R 1 1 1CES 1
TASK 21-26-00-040-005
Avionics Equipment Ventilation Computer Inoperative (AEVC) - Check of the
Ventilation System
1. Reason for the Job
__________________
Refer to the MMEL TASK: 21-26-10
Avionics Equipment Ventilation
Avionic Equipment Ventilation Computer
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
No specific access platform 1.50 m (4 ft. 11 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure 52-41-00-410-002 Close the Avionics Compartment Doors after Access
**ON A/C 001-049, 051-058, 101-101,
21-26-00-991-005 Fig. 405
R **ON A/C 059-099, 102-149, 151-199, 201-299, 301-399, 401-499,
21-26-00-991-005-A Fig. 405A **ON A/C ALL
3. Job Set-up
__________ Subtask 21-26-00-861-073
A. 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).
Subtask 21-26-00-010-061
B. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
4. Procedure
_________ **ON A/C 001-049, 051-058, 101-101,
Subtask 21-26-00-040-050
A. AEVC check of Vent SYS and Skin Air Inlet Valve Closure
(Ref. Fig. 405/TASK 21-26-00-991-005)
(1) Do this test :
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the VENTILATION part of the overhead control and indicating panel 22VU :
-release the BLOWER and EXTRACT On the VENTILATION part of the overhead pushbutton switches. control and indicating panel 22VU :
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-------------------------------------------------------------------------------
ACTION RESULT
--------------------------------------------------------------------------------the OVRD legend of the BLOWER and EXTRACT pushbutton switches comes on.
On the lower display unit of the ECAM system, on the CAB PRESS page :
-the outlet valve is partially open.
NOTE : If the ventilation system is
____ defective or when the BLOWER and EXTRACT pushbutton switches are released (OVRD legends on):
-there are no more colored backgrounds on the EFIS displays.
In the aft avionics compartment :
-check that the conditionned air inlet valve 21HQ is open.
-make sure that the extract fan operates correctly.
(2)
On the skin air inlet valve 15HQ :
(Ref. Fig. 405/TASK 21-26-00-991-005)
(a)
Push the PUSH latch to release the handle.
(b)
Spread out the handle.
(c)
Set the deactivation switch to OFF position.
(d)
Fold, stow and latch the handle.
(e)
Make sure that the skin air inlet valve is fully closed.
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