A. Not Applicable 4. Procedure
_________
**ON A/C 001-049, 051-058, 101-101,
(Ref. Fig. 405/TASK 21-26-00-991-005) R **ON A/C 059-099, 102-149, 151-199, 201-299, 301-399, 401-499,
(Ref. Fig. 405A/TASK 21-26-00-991-005-A)
**ON A/C ALL
Subtask 21-26-00-861-078
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 21-26-00-440-050
B. Reactivation of the skin air inlet valve
(1)
On the VENTILATION section of the overhead panel 22VU:
-push the BLOWER and EXTRACT pushbutton switches (on the EXTRACT pushbutton switch, the OVRD legend goes off on the BLOWER pushbutton switch, the FAULT LEGEND is on).
(2)
On the skin air inlet valve 15HQ:
-push the PUSH latch to release the handle
-pull the handle and set the deactivation switch to ON
-put the handle back to its initial position and latch it. Subtask 21-26-00-810-054
C. Do the trouble-shooting of the system (Ref. TSM 21 PB 101). Make the applicable corrections.
5. Close-up
________ Subtask 21-26-00-941-091
A. Aircraft Maintenance Configuration
(1) Remove the warning notice(s). Subtask 21-26-00-862-078
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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TASK 21-26-00-040-006
Blower Fan Inoperative - Check that the Air Conditioned Inlet Valve (21HQ) is Open
1. Reason for the Job
__________________
Refer to the MMEL TASK: 21-26-01 b)
Avionics Equipment Ventilation
Blower Fan
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 52-41-00-410-002 Close the Avionics Compartment Doors after Access 21-26-00-991-011 Fig. 406
3. Job Set-up
__________ Subtask 21-26-00-861-074
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
1EFF : ALL 1 21-26-00Page 451 1 1 Aug 01/05R 1 1 1CES 1
Subtask 21-26-00-010-064
B. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
4. Procedure
_________ Subtask 21-26-00-040-055
A. Conditioned Air Inlet Valve
(Ref. Fig. 406/TASK 21-26-00-991-011)
(1)
On the VENTILATION part of the overhead control and indicating panel 22VU:
-release the BLOWER pushbutton switch (the OVRD legend comes on).
(2)
In the avionics compartment:
-make sure that the conditioned-air inlet valve 21HQ is open (the position indicator of the valve is at 0).
5. Close-up
________ Subtask 21-26-00-410-065
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 824 (Ref. TASK 52-41-00-410-002).
(3) Remove the access platform(s). Subtask 21-26-00-941-092
B. Aircraft Maintenance Configuration
(1)
Put a warning notice in the cockpit to tell the crew that the Blower Fan is deactivated.
(2)
Make an entry in the log book.
1EFF : ALL 1 21-26-00Page 452 1 1 Aug 01/05R 1 1 1CES 1
R Conditioned Air Inlet Valve Figure 406/TASK 21-26-00-991-011
1EFF : 1 1 1CES ALL 1 111 21-26-00 Page 453 Aug 01/05
Subtask 21-26-00-862-082
C. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
1EFF : ALL 1 21-26-00Page 454 1 1 Aug 01/05R 1 1 1CES 1
R TASK 21-26-00-040-006- 01
R Deactivation of the Conditioned-Air Inlet Valve (21HQ) when the Blower Fan is R Inoperative
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