(2)
 Remove, overhaul or replace, and install the ozone filters 100HM and 101HM (Ref. TASK 21-51-41-000-001), (Ref. TASK 21-51-41-400-001) and (Ref. ACMM 211104).

 (3)
 Remove, overhaul or replace, and install the pack flow-control valves 8HB and 11HB (Ref. TASK 21-51-51-000-001), (Ref. TASK 21-51-51-400-001) and (Ref. CMM 215110).

 1EFF : ALL 1 21-00-00Page 261 1 1 Aug 01/05R 1 1 1CES 1

 (4)
 Remove, overhaul or replace, and install the the aft-cargo trim-air valve 12HC (Ref. TASK 21-43-51-000-001), (Ref. TASK 21-43-51-400-001) and (Ref. CMM 214302).

 (5)
 Remove, overhaul or replace, and install the pressure regulating valve 11HC (Ref. TASK 21-43-52-000-001), (Ref. TASK 21-43-52-400-001) and (Ref. CMM 214352).

R **ON A/C 051-099, 106-149, 201-299, 301-399,
 Subtask 21-00-00-210-053
 AA. Post Cleaning and Inspection of the ECS
 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.
 WARNING : DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
_______
 COOL TO PREVENT BURNS.

 (1)
 Remove, clean and install:

 (a)
 The water extractors 10HM8, 11HM8 and the water extractor drain lines (Ref. TASK 21-52-16-000-001), (Ref. TASK 21-52-16-400-001) and (Ref. CMM 215204).

 (b)
 The water injectors 20HM and 21HM (Ref. TASK 21-52-42-000-001), (Ref. TASK 21-52-42-400-001) and (Ref. CMM 215234).

 (2)
 Remove, overhaul or replace, and install the pack flow-control valves 8HB and 11HB (Ref. TASK 21-51-51-000-001), (Ref. TASK 21-51-51-400-001) and (Ref. CMM 215110).

 (3)
 Remove, overhaul or replace, and install the the aft-cargo trim-air valve 12HC (Ref. TASK 21-43-51-000-001), (Ref. TASK 21-43-51-400-001) and (Ref. CMM 214302).

 (4)
 Remove, overhaul or replace, and install the pressure regulating valve 11HC (Ref. TASK 21-43-52-000-001), (Ref. TASK 21-43-52-400-001) and (Ref. CMM 214352).

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 21-00-00Page 262 1201-299, 301-399, 1Aug 01/05 1 1 1CES 1

R **ON A/C 401-499,

 Subtask 21-00-00-210-053-B AA. Post Cleaning and Inspection of the ECS 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.
 WARNING : DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
_______
 COOL TO PREVENT BURNS.

 (1)
 Remove, clean (Ref. CMM 215204) and install:

 (a)
 The water extractors 10HM8, 11HM8 and the water extractor drain lines (Ref. TASK 21-52-16-000-001) and (Ref. TASK 21-52-16-400-001).

 (b)
 The water injectors 20HM and 21HM (Ref. TASK 21-52-42-000-001), (Ref. TASK 21-52-42-400-001) and (Ref. CMM 215234).

 (2)
 Remove, overhaul (Ref. CMM 215102) or replace, the pack flow-control units 23HB and 24HB (Ref. TASK 21-51-51-000-001) and (Ref. TASK 21-51-51-400-001).

 (3)
 Remove, overhaul (Ref. CMM 214302) or replace, the aft-cargo trim-air valve 12HC (Ref. TASK 21-43-51-000-001) and (Ref. TASK 21-43-51-400-001).

 (4)
 Remove, overhaul (Ref. CMM 214352) or replace, the pressure regulating valve 11HC (Ref. TASK 21-43-52-000-001) and (Ref. TASK 21-43-52-400-001).

 **ON A/C ALL
 Subtask 21-00-00-860-066 AB. Connection of the Temperature Sensors
 (1)
 Disconnect and remove the temperature simulating devices at the temperature sensors 21HK, 22HK and 23HK.

 (2)
 Connect the electrical connectors at the temperature sensors 21HK, 22HK and 23HK (Ref. TASK 21-63-17-400-001).

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 Subtask 21-00-00-865-069
 AC. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HH, 2HH, 3HH, 4HH, 21HH, 22HH, 23HH, 24HH, 1HK, 2HK, 3HK, 4HK, 30HN, 31HN.

R **ON A/C 401-499,
 Subtask 21-00-00-865-069-A
 AC. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 49HH, 50HH, 51HH, 52HH, 53HH, 54HH, 55HH, 56HH, 30HN, 31HN.
 **ON A/C ALL
 Subtask 21-00-00-710-051
 AD. Checks and Test of the ECS

 (1)
 Do the pre-conditioning with the APU or through the HP ground connector (Ref. TASK 12-33-21-618-001) or (Ref. TASK 12-33-21-618-001).

 (2)
 Do a leak check of:

 (a)
　
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