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 F.  Emergency lighting fixtures in the airplane ceiling panel above the galley complex provide illumination if airplane power failure occurs (AMM 33-51-00/001, Emergency Lighting).
 G.  The upper deck galley is equipped with a chilled air system. This system consists of an air chiller which circulates air in a closed loop. Damaged seals on compartment doors, cart to galley valves, and between the chiller and galley ducting degrades the efficiency of the system and may introduce excess fluid into the ducting trough condensation.
 2.  Galley Complex______________
 A.  The galley is a structurally integral assembly capable of transmitting loads to the airplane structure through hard point tiedown fittings and overhead tie rods. Permacel tape and galley mats protect the airplane structure from moisture under galley units and in galley walkways. Refer to AMM 25-27-00/001, Passenger Compartment Floor Coverings for additional information.
 B.  Visible surfaces are covered with decorative laminates. Stainless steel work areas and the exposed edge of light alloy extrusions are satin polished. Kickstrips are provided. The galley is provided with its own individually controlled electrical system and is connected to the airplane electrical system.
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A
747-400
MAINTENANCE MANUAL

LAVATORY

STANDARD CONTAINER (8 LOCATIONS)
GALLEY GALLEY GALLEY (LEFT SIDE) (FRONT) (RIGHT SIDE)

 

Upper Deck Galley Figure 1
L82787
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747-400
MAINTENANCE MANUAL

 C.  All electrical control panels are made up from combinations of standard modules secured in racks. These modules may be easily opened or replaced by removing four attachment screws and pulling on the handle provided. A quick-disconnect electrical connection is provided at the rear of the module.
 3.  Galley Equipment
________________
 A.  The galley equipment is divided into two groups, fixed (semipermanent) and removable. The fixed equipment is normally removed only for repair or replacement. The removable equipment is normally removed for use, replenishment or disposal of waste. For further information on galley equipment refer to AMM 25-31-00/001, Galleys and the Galley Manufacturers Maintenance Manual.
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747-400 MAINTENANCE MANUAL
 UPPER DECK GALLEYS - MAINTENANCE PRACTICES (SEALING)
____________________________________________________
 1.  General
_______
 A.  This procedure contains the instructions to apply a sealant in and below all of the galley units.
 B.  It is necessary to apply a sealant to contain the fluid leakage in the galleys. Use sealants to fill holes, slots, and low areas to make a smooth contour.
 NOTE: If the sealant is to be more effective, you must prepare all
____
 surfaces by cleaning and degreasing them.

 TASK 25-32-00-302-001
 2.  Seal the Galleys (Fig. 201)
________________
 A.  Consumable Materials
 (1)  
D00015 Grease - Corrosion Preventive - BMS 3-24

 (2)  
A00247 Sealant - BMS 5-95, Class B

 B.  References
 (1)  
AMM 25-27-02/401, Galley Area Floor Coverings

 (2)  
AMM 53-21-02/401, Floor Water Barrier

 (3)  
AMM 51-31-01/201, Seals and Sealing

 C.  Access
 (1)  Location Zone
 223 Upper deck Passenger Cabin, Left
　
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