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R  122VU  4HH  Y19 
R  **ON A/C 401-499, 
R R R R R R R 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC  53HH 55HH 49HH 51HH 56HH 54HH 50HH  W22 W21 X22 X21 Y21 Y20Y18 
**ON A/C ALL
 Subtask 21-21-43-710-050
 D. Test
 (1) Do the pre-conditioning through the HP ground connector (Ref. TASK 12-33-21-618-001) or with the APU (Ref. TASK 12-33-21-618-001).
 (2) Do a leak check of the mixer unit duct connections.
 NOTE : Leaks are not permitted.____
 (3) Make sure that the recirculation fans operate correctly.
 (4) After approx. 15 minutes stop the pre-conditioning (Ref. TASK 12-33-21-618-001) or (Ref. TASK 12-33-21-618-001).

 

 Subtask 21-21-43-420-052
 E. Installation of the Insulation
 (1)
 Make sure that the insulation (6) and (7) is in a good condition. If necessary replace the insulation (6) and/or the insulation (7).

 (2)
 Put the insulation (6) in position and install the new cable-ties (40).

 (3)
 Put the insulation (7) in position and install the new cable-ties (40).

 5. Close-up
________ Subtask 21-21-43-410-050
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the access panels 131PW, 131NW and 132PW (Ref. TASK 25-54-12-400-001).

 (3)
 Remove the access platform(s).

 (4)
 Close the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-002).

 (5) Remove the warning notice(s). Subtask 21-21-43-862-050
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002)
 1EFF : ALL 1 21-21-43Page 422 1 1 Aug 01/05R 1 1 1CES 1

 AIR OUTLET - INDIVIDUAL, COCKPIT (4500HM,4501HM,4502HM,4503HM)
______________________________________________________________ REMOVAL/INSTALLATION
____________________
 TASK 21-21-44-000-001
 Removal of the CAPT (F/O) Individual Air-Outlet (4500HM,4501HM)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External
 Power
 31-53-21-000-001 Removal of the Loudspeakers (7WW,8WW)
 21-21-44-991-001 Fig. 401

 3. Job Set-up
__________
 Subtask 21-21-44-861-050

 A. Energize the ground service network R (Ref. TASK 24-42-00-861-001) Subtask 21-21-44-865-050

 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 4500HM
 122VU AIR COND/RECIRC FAN/L/CTL 2HG X20 122VU AIR COND/RECIRC FAN/L/SPLY 1HG X18
 FOR 4501HM 122VU AIR COND/RECIRC FAN/R/CTL 11HG W20 122VU AIR COND/RECIRC FAN/R/SPLY 3HG W18
 4. Procedure
_________
 (Ref. Fig. 401/TASK 21-21-44-991-001)
 Subtask 21-21-44-020-050
 A. Removal of the CAPT (F/O) Individual Air-Outlet
 (1)
 Remove the loudspeaker (Ref. TASK 31-53-21-000-001):
 FOR 4500HM
 Remove the loudspeaker 7WW
 FOR 4501HM
 Remove the loudspeaker 8WW

 (2)
 Remove the 3 screws (4) and the 3 washers (3).

 (3)
 Remove the instrument panel (1).

 (4)
 Remove the 4 screws (2).

 (5)
 Disengage the duct (6) and remove the air outlet (5).

 

 CAPT (F/O) Individual Air-Outlet
 Figure 401/TASK 21-21-44-991-001
 1EFF :  ALL  1  21-21-44 Page 403 
　
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