Subtask 21-00-00-860-053-A
H. Reconnection of the Bleed Air Ducts at the Engines
WARNING : DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
_______
COOL TO PREVENT BURNS.
(1)
Remove the protective covers from the open ends of the bleed pressure-regulator valves.
(2)
Connect the bleed-air joint ducts (B) (Ref. TASK 36-11-49-400-042). NOTE : Make sure that you do the leak check after connection of the
____
bleed-air joint ducts.
Subtask 21-00-00-865-053
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
Subtask 21-00-00-865-054
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,
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 SYS1/1/115VAC 1HH X22 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 3HH X21 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 24HH Y21
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 22HH Y20
R
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 122VU AIR COND/RECIRC FAN/R/CTL 11HG W20
R 122VU AIR COND/RECIRC FAN/R/SPLY 3HG W18
R 122VU AIR COND/RECIRC FAN/L/CTL 2HG X20
R 122VU AIR COND/RECIRC FAN/L/SPLY 1HG X18
R **ON A/C 106-149, 303-399,
R 122VU 4HH Y19
R **ON A/C 401-499,
R 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 53HH W22
R 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 55HH W21
R 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 49HH X22
R 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 51HH X21
R 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 56HH Y21
R 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 54HH Y20
122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 50HH Y18
R
**ON A/C ALL
Subtask 21-00-00-869-051
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 codensation 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
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