747-400 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS 1(84)

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747-400
MAINTENANCE MANUAL

TOP OF GALLEYUNIT
VENT DUCT
JOINT
LIGHT BOX
VENT DUCT
VENT DUCT
JOINT

TOP OF GALLEY
UNIT

GALLEY COMPLEX VENTILATION SYSTEM (EXAMPLE)
VENT DUCT
FILTER
LIGHTS
GRILL, WASHER AND FASTENER
SCREW
VENTILATION FILTER INSTALLATION (EXAMPLE)
Galley Ventilation Filter
Figure 201

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 (b) (c) (d)  Shake the filter in the soap and warm water to remove the dirt.Flush the filter in clean warm water.Dry the filter with a flow of air.
 (5)  S 422-005Install the filter to the grill.
 (6)  S 432-006Install the fasteners and washers which attach the grill to the inlet assembly.

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747-400 MAINTENANCE MANUAL
 AIR CHILLER INTAKE FILTER - MAINTENANCE PRACTICES
_________________________________________________
 1.  General
_______
 A.  This procedure contains instructions to clean the air chiller intake filter.
 B.  The chiller intake filter covers the intake opening for the chiller condenser. The chiller intake filter is mounted in a frame and attaches to the galley side with screws. Clean or replace the intake filters regularly for satisfactory chiller operation.
 NOTE: You must install a serviceable filter whenever a chiller unit is
____
 in use.

 C.  Install the chiller on the forward side of the galley unit on the upper deck.
 D.  You can get access to the chiller on through the door on the forward outboard side of the galley unit.
 TASK 25-31-19-102-001
 2.  Clean Air Chiller Intake Filter (Fig. 201)
_______________________________
 A.  Consumable Materials
 (1)  
B00158 Detergent - Clean Quick or Glo Do-All
 Formula 3B mixed with water

 (2)  
B00025 Solvent - PD-680

 B.  References
 (1)  IPC 25-31-04
 C.  Access
 (1)  Location Zone
 200 Upper Half Fuselage

 D.  Procedure
 S 012-002
 (1)  
Remove the intake filter from the chiller unit.

 S 112-003

 (2)  
Clean the intake filter in a solution of soap and water to remove the dirt.

 (3)  
Flush the intake filter in clean water.

 S 172-004
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LAVATORY U21

TRACK-MOUNTED CHILLER UNIT SEE A

FILTER
CHILLER ASSEMBLY (EXAMPLE)

Air Chiller Intake Filter

Figure 201

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