(b) Do this task: Supply Conditioned Air with a Cooling Pack (AMM 21-00-00/201).
TASK 21-00-00-862-045
3. Remove Conditioned Air from the Airplane
________________________________________
A. References
(1) AMM 21-00-00/201, Air Conditioning
B. Procedure
S 862-046
(1) Do one of these tasks to remove conditioned air from the airplane:
(a)
Do this task: Remove Conditioned Air Supplied by a Ground Air Source (AMM 21-00-00/201).
(b)
Do this task: Remove Conditioned Air Supplied by a Cooling Pack (AMM 21-00-00/201).
TASK 21-00-00-862-001
4. Supply Conditioned Air with a Ground Air Source
_______________________________________________
A. General
(1) Conditioned air from a ground air source is supplied to the aircraft through the ground conditioned air service connectors. The ground connectors are installed downstream of the water separators in air conditioning packs 1 and 3.
B. Standard Tools and Equipment
(1) Conditioned air source
C. References
(1) AMM 06-09-03/201, Body Panels and Access Doors
D. Access
(1)
Location Zone
133 Air Conditioning Equipment Bay, LH
134 Air Conditioning Equipment Bay, RH
(2)
Access Panel
191NL Air Conditioning Access Door
192HR Air Conditioning Access Door
E. Procedure
S 012-002
(1)
Lower the access doors 191NL and 192HR on the air conditioning bay (AMM 06-09-03/201).
S 432-003
(2)
Install the air supply duct into the ground service connector.
(a)
Lower the cover on the ground service connector.
(b)
Engage the fasteners on the air supply duct in the slots on the flange of the ground service connector.
(c)
Turn the air supply duct to lock it in its position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-00-00
ALL ú ú 02 Page 204 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 282-004
WARNING:_______MAKE SURE THERE IS AN EXIT FOR THE CONDITIONED AIR. ACCIDENTAL CABIN PRESSURIZATION CAN CAUSE INJURY TO PERSONS.
(3) Make sure the pressurization outflow valves are open or a minimum of one airplane door is open.
S 862-040
CAUTION: DO NOT OPERATE A COOLING PACK AND A GROUND AIR SOURCE TOGETHER
_______ FOR AN EXTENDED PERIOD OF TIME. A COOLING PACK CANNOT CONTROL THE AIR TEMPERATURE IF YOU ALSO OPERATE A GROUND AIR SOURCE AT THE SAME TIME. YOU CAN CAUSE DAMAGE TO EQUIPMENT IF YOU OPERATE A COOLING PACK AND A GROUND AIR SOURCE TOGETHER FOR AN EXTENDED PERIOD OF TIME.
(4) Start the ground air source.
TASK 21-00-00-862-006
5. Remove Conditioned Air Supplied by a Ground Air Source______________________________________________________
A. References
(1) AMM 06-09-03/201, Body Panels and Access Doors
B. Access
(1)
Location Zone
133 Air Conditioning Equipment Bay, LH
134 Air Conditioning Equipment Bay, RH
(2)
Access Panel
191NL Air Conditioning Access Door
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