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**ON A/C ALL
Subtask 21-00-00-010-052
E. Get access
(1) Remove the access panels 191BB, 192FB, 191KB and 192KB (Ref. TASK 53-35-13-000-002).
4. Procedure
_________ **ON A/C 001-049, 101-105, 151-199,
Subtask 21-00-00-110-050-C
A. Cleaning of the Bleed Air Duct 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)
Put a warning notice in position in the cockpit to tell persons not to start the APU or the engines.
(2)
Remove the section of bleed air duct forward of the ozone filters 100HM and 101HM (Ref. TASK 36-12-41-000-001).
(3)
Do a check for and remove any large quantities of oil which may be present in the bleed air ducts and the ozone filters.
(4)
Cleaning of the Bleed Air Ducts and the Ozone Filters WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE
_______ THIS/THESE MATERIAL/S. USE PROTECTIVE CLOTHING, RUBBER GLOVES AND GOGGLES.
(a) Clean contaminated bleed air ducts and areas of the ozone filters that you can get access to with a lint-free cloth and CLEANING AGENTS (Material No. 11-001K).
(5) Install the removed sections of bleed air duct (Ref. TASK 36-12-41-400-001).
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(6)
Disconnect the bleed-air joint duct (B) on both engines at the bleed-pressure regulator valve side of the ducts (Ref. TASK 36-11-49-000-042).
(7)
Turn the bleed-air joint ducts so that they face away from the engines and any electrical cables or equipment.
NOTE : The open ends of the bleed-air joint ducts (B) must face in
____ such a direction that the hot bleed air can vent freely to atmosphere.
(8) Put protective covers on the open ends of the bleed-pressure regulator valve.
(9) Remove the warning notice(s). R **ON A/C 051-099, 106-149, 201-299, 301-399,
Subtask 21-00-00-110-050-B
A. Cleaning of the Bleed Air Duct 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)
Put a warning notice in position in the cockpit to tell persons not to start the APU or the engines.
(2)
Remove the section of bleed air duct forward of the flow control valves 8HB and 11HB (Ref. TASK 36-12-41-000-001).
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