(6)
Remove the blanking plug from the air outlet.
(7)
Remove the blanking caps from the electrical connectors.
(8)
Make sure that the electrical connectors are clean and in the correct condition.
(9) Connect the electrical connector (5).
Subtask 21-26-53-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 6HQ
Subtask 21-26-53-710-050
C. Do an operational test of the ventilation system of the avionics equipment (Ref. TASK 21-26-00-710-001).
NOTE : As an alternative procedure, you can do this operational test
____
without the CFDS (Ref. TASK 21-26-00-710-001).
R 1EFF : ALL 1 21-26-53Page 410 1 1 Feb 01/05 1 1 1CES 1
5. Close-up
________ Subtask 21-26-53-942-050
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Remove the access platform(s). Subtask 21-26-53-862-051
B. De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
R 1EFF : ALL 1 21-26-53Page 411 1 1 Feb 01/05 1 1 1CES 1 VALVE - CONDITIONED AIR INLET (21HQ) - REMOVAL/INSTALLATION
___________________________________________________________
TASK 21-26-54-000-001
Removal of the Conditioned Air Inlet Valve (21HQ)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
R No specific blanking caps
R No specific blanking plugs No specific circuit breaker(s) safety clip(s) No specific access platform 1.6 m (5 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power R 21-26-54-991-001 Fig. 401
3. Job Set-up
__________
CAUTION : USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE
_______ THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
Subtask 21-26-54-861-050
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-54-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06 49VU AIR COND/AVNCS VENT/CTL 5HQ D05 122VU AIR COND/AVNCS/VENT/MONG 3HQ Y17
Subtask 21-26-54-010-050
C. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
4. Procedure
_________ (Ref. Fig. 401/TASK 21-26-54-991-001) R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-54-020-050
A. Removal of the Conditioned Air Inlet Valve
(1)
Disconnect the electrical connector (5) from the valve (6).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Remove the clamps (4) and (2). NOTE : Do not discard the clamps (4) and (2). You must keep and use
____ them during the installation procedure.
(4)
Move the flexible sleeve (3) on the pipe (1) to release the valve (6).
(5)
Remove the clamp (8) and remove the valve (6).
(6)
Remove and discard the O-ring (7).
(7)
Remove the flexible sleeve (3).
Conditioned Air Inlet Valve Figure 401/TASK 21-26-54-991-001
1EFF : 1 1R 1CES ALL 1 11 1 21-26-54 Page 403 May 01/01
(8) Put blanking plugs on the disconnected line ends.
R **ON A/C 051-052,
R Subtask 21-26-54-020-050-A
R A. Removal of the Conditioned Air Inlet Valve
R (1) Disconnect the electrical connector (5) from the valve (6).
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