Subtask 21-00-00-865-062
 H. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
 Subtask 21-00-00-865-063
 J. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/ENG 1/MONG 2HA1 D11 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22
 1EFF : ALL 1 21-00-00Page 243 1 1 Aug 01/05R 1 1 1CES 1

 Subtask 21-00-00-865-064
 K. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R  **ON A/C 401-499,
 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC  52HH  D08 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R  122VU AIR COND/ZONE TEMP CTL/28VDC/SYS2 122VU AIR COND/ZONE TEMP CTL/28VDC/SYS1 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS2 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS1 122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC  4HK 3HK 2HK 1HK 21HH 23HH 1HH 3HH 24HH 22HH  V20V19V18V17W22W21X22X21Y21Y20 
R  **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302, 
R  122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC  4HH  Y19 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399, 
R  122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC  2HH  Y18 
R  **ON A/C ALL 
R R R R  122VU AIR COND/RECIRC FAN/R/CTL 122VU AIR COND/RECIRC FAN/R/SPLY 122VU AIR COND/RECIRC FAN/L/CTL 122VU AIR COND/RECIRC FAN/L/SPLY  11HG 3HG 2HG 1HG  W20 W18 X20 X18

 -------------------------------------------------------------------------------
R  PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------**ON A/C 106-149, 303-399, 
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 21-00-00-869-054
 L. Preparation for the Stage 1 Cleaning 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 the clamps and the sleeve between the condenser 10HM2 and the check valve 15HM.
 (2) Remove the clamps and the sleeve between the condenser 11HM2 and the check valve 16HM duct flange.
 (3) Put the special blanking caps on the open end of the check valve 15HM and on the open end of the check valve 16HM duct flange.
 NOTE : Use the removed clamps to secure the blanking caps.____

 (4) Do a check for and make a note of any oil contamination in the condensors.
 NOTE : Water condensation can occur in the condensors. This must be
____ ignored.
 (5)
 If oil contamination is found in the condensers you must:

 (a)
 Remove the cabin recirculation fans 14HG and 15HG (Ref. TASK 21-21-51-000-001).

 (b)
 Do a check for oil contamination in the interior of the mixer unit.

 (c)
 Cleaning of the Mixer Unit WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE

_______

 (d)
 Install the cabin recirculation fans 14HG and 15HG (Ref. TASK 21-21-51-400-001).

 (6)
 Disconnect the electrical connectors at the cabin temperature sensors 21HK, 22HK and 23HK (Ref. TASK 21-63-17-000-001).

 (7)
 Install the temperature simulation devices at the cabin temperature sensors 21HK, 22HK and 23HK.
　
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