4. Procedure
_________ (Ref. Fig. 402/TASK 21-26-55-991-003) R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-55-420-052
A. Installation of the Skin Exchanger Isolation Valve
(1)
Remove the blanking plugs from the disconnected line ends.
(2)
Install the flexible sleeve (26) on the duct (28).
(3)
Put the new O-ring (22) in the groove of the duct (20).
(4)
Install the valve (23) in the flexible sleeve (26). NOTE : The arrow that indicates the air flow points up.
____
(5)
Make sure that the valve (23) is in the correct angular position . The electrical cable must not be too tight or too loose.
(6)
Install the clamp (21) and tighten to the torque value which is indicated on the clamp.
(7)
Put the flexible sleeve (26) in position.
(8)
Install and tighten the clamps (25) and (27). NOTE : Use the clamps (25) and (27) kept during the removal
____
procedure.
(9)
Remove the blanking caps from the electrical connectors.
(10)
Make sure that the electrical connectors are clean and in the correct condition.
(11)
Connect the electrical connector (24).
R **ON A/C 051-052,
R Subtask 21-26-55-420-052-A
R A. Installation of the Skin Exchanger Isolation Valve
R (1) Remove the blanking plugs from the disconnected line ends.
R (2) Install the flexible sleeve (26) on the duct (28).
R (3) Put the new O-ring (22) in the groove of the duct (20).
R (4) Install the valve (23) in the flexible sleeve (26).
R NOTE : The arrow that indicates the air flow points up.____
R (5) Make sure that the valve (23) is in the correct angular position .
R The electrical cable must not be too tight or too loose.
R (6) Install the clamp (21) and tighten to the torque value which is
R indicated on the clamp.
R (7) Put the flexible sleeve (26) in position.
R (8) Install and tighten the clamps (25) and (27).
R (9) Remove the blanking caps from the electrical connectors.
R (10) Make sure that the electrical connectors are clean and in the correct
R condition.
R (11) Connect the electrical connector (24).
R **ON A/C ALL
Subtask 21-26-55-865-055
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit
breaker(s):
6HQ.
Subtask 21-26-55-710-051
C. Do this Test
(1) 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).
5. Close-up
________ Subtask 21-26-55-410-052
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 822.
(3) Remove the access platform(s). Subtask 21-26-55-862-053
B. De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
1EFF : ALL 1 21-26-55Page 418 1 1 May 01/05R 1 1 1CES 1
TASK 21-26-55-000-003
Removal of the Avionics Ventilation Skin Exchanger Outlet Bypass Valve (23HQ)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM AIR CONDITIONING 空调 2(95)
