R Subtask 21-26-00-862-086
R C. Aircraft Maintenance Configuration
R (1) Do the EIS stop procedure
R (Ref. TASK 31-60-00-860-002).
R (2) De-energize the aircraft electrical circuits
R (Ref. TASK 24-41-00-862-002).
TASK 21-26-00-440-009 Reactivation of the Avionics Ventilation Filter
1. Reason for the Job
__________________
Refer to the MMEL TASK: 21-26-09
Avionics Equipment Ventilation
Ventilation filter
2. Job Set-up Information
______________________
A. 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 TSM 21 PB 101 (for corrective action)
3. Job Set-up
__________ Subtask 21-26-00-861-079
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 21-26-00-869-110
B. Not Applicable
4. Procedure
_________ Subtask 21-26-00-440-059
A. On the VENTILATION part of the overhead control and indicating panel 22VU:
-push the EXTRACT pushbutton switch (the OVRD legend goes off).
Subtask 21-26-00-810-058
B. Aircraft Maintenance Configuration
(1) Do the trouble-shooting of the system (Ref. TSM 21 PB 101). Do the applicable corrections.
5. Close-up
________ Subtask 21-26-00-862-075
A. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
TASK 21-26-00-040-010 Blower Fault Warning - Check of the Blower Fan and AVNCS SYS FAULT Warning
1. Reason for the Job
__________________
Refer to the MMEL TASK: 21-26-11
Avionics Equipment Ventilation
BLOWER FAULT Warning
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 -------------------------------------------------------------------------------
21-26-00-710-001 Operational Check of System via MCDU 24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 52-41-00-410-002 Close the Avionics Compartment Doors after Access
3. Job Set-up
__________ Subtask 21-26-00-861-076
A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-00-010-072
B. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
4. Procedure
_________ Subtask 21-26-00-869-102
A. In the avionics compartment, make sure that the blower fan 20HQ operates correctly.
Subtask 21-26-00-710-062
B. Do an operational test of the avionics equipment ventilation (Ref. TASK 21-26-00-710-001).
5. Close-up
________ Subtask 21-26-00-410-073
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 21-26-00-941-096
B. Aircraft Maintenance Configuration
(1) Put a warning notice in the cockpit to tell the crew that the BLOWER FAULT warning is not serviceable.
(2)
Make an entry in the log book. Subtask 21-26-00-862-076
C. De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
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