R 1EFF : 001-003, 051-054, 1 21-61-17Page 407 1 1 May 01/05 1 1 1CES 1

R  2_ FOR 38HH 192KB
 Subtask 21-61-17-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 18HH 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 1HH X22 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 3HH X21 122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC 4HH Y19 122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC 2HH Y18 FOR 38HH 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 21HH W22 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 23HH W21 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 24HH Y21 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 22HH Y20
 4. Procedure_________ 
R  **ON A/C 001-003,
 (Ref. Fig. 401/TASK 21-61-17-991-001) 
R  **ON A/C 051-054, 
R  (Ref. Fig. 401A/TASK 21-61-17-991-001-A) 
R  **ON A/C 001-003,
 Subtask 21-61-17-420-050
 A. Installation of the Bleed-Air Temperature Sensor
 (1) Clean the component interface and/or the adjacent area.
 (2) Make sure that the parts retained from the removed component are clean and in the correct condition.

 (3) Make sure that the O-ring (3) is in a good condition. If necessary install a new O-ring (3).
 (4) Put the O-ring (3) in position on the bleed-air temperature sensor (2).
 (5) Install the bleed-air temperature sensor (2) in the ozone filter (4).
 (6) TORQUE the bleed air temperature-sensor (2) to between 0.5 and 1.0 m.daN (44.24 and 88.49 lbf.in).
 (7) Safety the bleed air temperature-sensor with MISCELLANEOUS (Material No. 19-009).
 (8) Remove the blanking caps from the electrical connectors.
 (9) Make sure that the electrical connectors are clean and in the correct condition.
 (10) Connect the electrical connector (1) to the bleed air temperature-sensor (2).
 (11) Make sure that the work area is clean and clear of tool(s) and other items. 
R  **ON A/C 051-054, 
R  Subtask 21-61-17-420-050-A 
R  A. Installation of the Bleed-Air Temperature Sensor 
R  (1) Clean the component interface and/or the adjacent area. 
R R  (2) Make sure that the parts retained from the removed component are clean and in the correct condition. 
R R  (3) Make sure that the O-ring (3) is in a good condition. If necessary install a new O-ring (3). 
R R  (4) Put the O-ring (3) in position on the bleed-air temperature sensor (2). 
R R  (5) Install the bleed-air temperature sensor (2) in the bleed air duct (4).

R R  (6) TORQUE the bleed air temperature-sensor (2) to between 0.5 and 1.0 m.daN (44.24 and 88.49 lbf.in). 
R R  (7) Safety the bleed air temperature-sensor with MISCELLANEOUS (Material No. 19-009). 
R  (8) Remove the blanking caps from the electrical connectors. 
R R  (9) Make sure that the electrical connectors are clean and in the correct condition. 
R R  (10) Connect the electrical connector (1) to the bleed air temperature-sensor (2). 
R R  (11) Make sure that the work area is clean and clear of tool(s) and other items. 
R  **ON A/C 001-003, 051-054,
 Subtask 21-61-17-865-053
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 18HH 1HH, 2HH, 3HH, 4HH. FOR 38HH 21HH, 22HH, 23HH, 24HH.
 Subtask 21-61-17-710-050
 C. Do the operational test of the pack temperature control system (Ref. TASK 21-61-00-710-001).
 5. Close-up________
 Subtask 21-61-17-410-051
 A. Close access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
 (2) Close the access panel (Ref. TASK 53-35-13-400-002): 
R  (a) FOR 18HH 191KB,

R (b) FOR 38HH

 192KB Subtask 21-61-17-862-050
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 SENSOR - COMPRESSOR PNEUMATIC OVERHEAT (10HM9,11HM9) - REMOVAL/INSTALLATION
___________________________________________________________________________ TASK 21-61-18-000-001 Removal of the Compressor Pneumatic Overheat-Sensor 10HM9 (11HM9) WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______ FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
 NOTE : The procedure is the same for the compressor pneumatic overheat-sensors
　
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