E.  Procedure
 S 027-002
 (1)  Remove the fan screen:
 (a)  Remove the screws which attach the screen to the fan and remove the fan screen.
 S 167-003
 (2)  Clean the fan screen:
 (a) Remove all the loose material from the fan screen.
 NOTE: Use a vacuum cleaner or compressed air.
____
 (b)  
Wash the fan screen with soap and water.

 (c)  
Rinse the fan screen with clean water.

 (d)  
Dry the fan screen with a dry cloth.

 S 427-004
 (3)  Install the fan screen.
 (a)  Put the screen in place and install the screws to attach the fan screen to the fan.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-58-15
 ALL  ú ú 01 Page 701 ú Feb 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
TEMPERATURE CONTROL SYSTEM
COMPONENT  SHT 102 FIG.  QTY  ACCESS/AREA  AMM REFERENCE 
ACTUATOR - RAM AIR EXIT DOOR 
PACK 1, V156  9  1  191EL, AIR CONDITIONING ACCESS  21-62-05 
PANEL 
PACK 2, V157  9 1  191ML, AIR CONDITIONING ACESS  21-62-05 
PANEL
PACK 3, V158  9 1  192ER, AIR CONDITIONING ACCESS  21-62-05 
PANEL
ACTUATOR - RAM AIR INLET DOOR
PACK 1, V105  9 1  WING TO BODY FAIRING  21-62-03 
PACK 2, V106  9 1  WING TO BODY FAIRING  21-62-03 
PACK 3, V107  9 1  WING TO BODY FAIRING  21-62-03 
BULB - ZONE TEMPERATURE
AFT MAIN DECK 1,2, T1932,T1933  4  1  AREA ABOVE MAIN DECK CEILING, AFT 21-61-05 
BULK CARGO COMPARTMENT, T962  4  1  BULK CARGO COMPARTMENT, LEFT 21-61-05 
CREW REST AREA, T1939  3  1  AREA ABOVE CREW REST AREA CEILING 21-61-03
 FLIGHT DECK, T1632  3  1  FLT COMPT, LEFT 21-61-03
FORWARD MAIN DECK 1,2, T1926,T1928  4  1  AREA ABOVE MAIN DECK CEILING,  21-61-03 
FORWARD 
LOWER AFT CARGO, T507  4 1  AFT CARGO COMPARTMENT, RIGHT 21-61-05 
LOWER FORWARD CARGO, T1642  4 1  FORWARD CARGO COMPARTMENT, LEFT 21-61-05 
UPPER DECK, T1633  4  1  UPPER DECK, RIGHT 21-61-03
CARD - ECS MISC PCA, YMLA13  1  1 117AL, MAIN EQUIPMENT CTR, E2-4  21-26-02 
CONTROLLER - A PACK TEMPERATURE, M7911  1  1 117AL, MAIN EQUIPMENT CTR, E2-4  21-62-06 
CONTROLLER - B PACK TEMPERATURE, M7912  1 1  117AL, MAIN EQUIPMENT CTR, E2-4  21-62-06 
CONTROLLER - ZONE TEMPERATURE, M7913  1 1  117AL, MAIN EQUIPMENT CTR, E2-4  21-61-01
MODULE - CABIN TEMPERATURE CONTROL, M7329  2 1  FLT COMPT, P5  * 
MODULE - CABIN TEMP SELECTOR, M7914  1  1  UPPER DECK, NEXT TO LAVATORY DOOR  *
SENSOR - ZONE DUCT TEMPERATURE 
AFT MAIN DECK, T1934  6 1  AREA ABOVE CEILING, AFT  21-61-16 
CREW REST AREA, T1937 6 1  AREA BEHIND CREW REST AREA  21-61-16 
FLIGHT DECK, T1647 6  1  AREA BEHIND CREW REST AREA  21-61-16 
FORWARD MAIN DECK, T1929 6  1  AREA ABOVE CEILING, FORWARD  21-61-16 
LOWER AFT CARGO, T1658 6  1  BODY LDG GEAR WELL, RIGHT  21-61-16 
LOWER FORWARD CARGO, T1657 6  1  192BR, AIR COND ACCESS PANEL  21-61-16 
UPPER DECK, T1648 6  1  AREA BEHIND CREW REST AREA  21-61-16 
SENSOR - PACK DISCHARGE TEMPERATURE 
PACK 1, SENSOR A, T1609  10  1  191NL, AIR CONDITIONING ACCESS  21-62-07 
DOOR 
PACK 1, SENSOR B, T1612  10  1  191NL, AIR CONDITIONING ACCESS 21-62-07 
DOOR 
PACK 2, SENSOR A, T1610  10  1  191NL, AIR CONDITIONING ACCESS 21-62-07 
DOOR 
PACK 2, SENSOR B, T1613  10  1 191NL, AIR CONDITIONING ACCESS 21-62-07 
DOOR 
PACK 3, SENSOR A, T1611  10 1  191HR, AIR CONDITIONING ACCESS  21-62-07 
DOOR 
　
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