(b)
The air outlet panel (7) is in the lowered position.
Subtask 21-24-19-865-054
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU AIR COND/RECIRC FAN/R/SPLY 3HG W18 122VU AIR COND/RECIRC FAN/L/SPLY 1HG X18
4. Procedure
_________
(Ref. Fig. 401/TASK 21-24-19-991-001) Subtask 21-24-19-420-050
A. Installation of the Individual Air Outlet
(1)
Remove the blanking plugs from the disconnected line ends.
(2)
Clean the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(4)
Put the individual air outlet (6) in position in the air outlet panel
(7) and install the plastic ring nut (3).
(5)
Put the air outlet plenum (1) in position on the individual air outlets (6) and install and tighten the clamps (2).
NOTE : All three of the clamps (2) must be installed and tightened.
____
(6)
Put the air outlet panel (7) in position and attach one side of it to the attachment rail (9).
(7)
Connect the flexible hose (10) to the air outlet plenum (1).
5. Close-up
________ Subtask 21-24-19-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Raise the air outlet panel (7) and secure it to the attachment rail (4).
(3)
Install the section-hose (5) and (8) in the attachment rails (4) and (9).
NOTE : To do this you use the PULLEY ASSEMBLY - SEALING CORD and move
____ it backwards and forwards over the section-hose (5) and (8). You must not roll the section-hose in one direction only as it will contract after installation.
Subtask 21-24-19-865-055
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HG, 3HG.
Subtask 21-24-19-862-050
C. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
AVIONICS EQUIPMENT VENTILATION - DESCRIPTION AND OPERATION
__________________________________________________________
1. General
_______ R **ON A/C 001-049, 051-099, 101-105, 301-399, 401-499,
(Ref. Fig. 001)
**ON A/C 001-049, 101-149, 151-199, 201-299,
Post SB 21-1087 For A/C 001-049,101-105,
(Ref. Fig. 001A)
**ON A/C ALL
The avionics ventilation system operates in different configurations. These configurations are dependent on, ambient temperature, whether the aircraft is on the ground, or in flight. The avionics equipment is also cooled in different ways, these are not dependent on the ventilation system configurations.
2. Component Location
__________________
**ON A/C 001-049, 051-099, 101-105,
(Ref. Fig. 002)
**ON A/C 106-149, 159-199, 211-299,
(Ref. Fig. 002A) R **ON A/C 301-399, 401-499,
(Ref. Fig. 002B)
**ON A/C 001-049, 101-105, 151-158, 201-210,
Post SB 21-1087 For A/C 001-049,101-105,
(Ref. Fig. 002C)R **ON A/C ALL
R (Ref. Fig. 003)
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA
| | | | DOOR | REF. -------------------------------------------------------------------------------2140HM CHECK VALVE-AVNCS VENT 128 824AR 21-26-41 2150HM CHECK VALVE-AIR INLET, AVNCS VENT 127 824 21-26-56 2081HM DEMISTER-AVNCS VENT FILTER 127 21-20-00 2082HM CARTRIDGE-AVNCS VENT FILTER 127 21-20-00 2083HM HOUSING-AVNCS VENT FILTER 127 21-20-00 2095HM SIPHON-AVNCS VENT FILTER 127 21-20-00
10HQ AEVC 88VU 128 824AR 21-26-34 15HQ VALVE-SKIN AIR INLET, AVNCS VENT 127 812 21-26-52 16HQ VALVE-SKIN EXCHANGER INLET BYPASS, 128 127AF 21-26-55
AVNCS VENT 17HQ PRESS SW-BLOWER FAN, AVNCS VENT 121 811AB 21-26-11 18HQ FAN-EXTRACT, AVNCS VENT 128 824AR 21-26-51 19HQ PRESS SW-BLOWER FAN, AVNCS VENT 127 824AR 21-26-11 20HQ FAN-BLOWER, AVNCS VENT 128 824AR 21-26-51 21HQ VALVE-COND AIR INLET, AVNCS VENT 127 824AR 21-26-54 22HQ VALVE-SKIN AIR OUTLET, AVNCS VENT 126 822AR 21-26-53 23HQ VALVE-SKIN EXCHANGER OUTLET BYPASS, 125 812 21-26-55
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