(c)
Tighten all clamps and/or replace damaged drain tubes as necessary.
(d)
Examine the floor beams, intercostals and structure for signs of moisture and/or corrosion.
(e)
Do an inspection of installed equipment, in the applicable equipment compartment (AMM 5-51-12/201), for signs of contamination. 1) If you find signs of moisture on equipment electrical cables, use a dry air supply
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to remove all moisture from the contaminated areas.
NOTE: Electrical cable looms can hold moisture between the separate wires. If possible, open the wires in a contaminated cable when you dry the cable.
2) Do a check of contaminated connectors for moisture ingress and dry as necessary.
NOTE: If you think a connector is contaminated with moisture, you must disconnect and fully examine the connector and the related equipment connector.
(f) If you find signs of moisture, use a clean cloth or a dry air supply to remove all moisture and fully dry the contaminated components.
(11)
If you do not find signs of moisture and the water barrier is in a serviceable condition, do the close out procedure.
NOTE: The removal of the galley and repairs to the floor water barrier are only necessary when signs of damage and leaks in the galley floor are found.
(12)
If your inspection shows damage to the water barrier of the galley floor area and/or shows the moisture travel to go below the galley floor, remove the applicable galley.
(a)
Remove forward galleys (AMM 25-31-51/401).
(b)
Remove aft galleys (AMM 25-31-61/401).
(13)
If necessary, remove the galley floor (AMM 53-21-0/401 and AMM 25-27-211/401).
(14)
Fully clean the area and the floor panels and make sure you remove all the remaining sealant.
(15)
If corrosion is found on the airframe, refer to the Structural Repair Manual (SRM).
(16)
Install the galley floor (AMM 53-21-0/401).
(17)
Install the water barrier in the galley (AMM 53-21-11/801).
(18)
Install the galley (as applicable).
(19)
If an equipment is found to have been contaminated with moisture, you must do an operational test of the equipment after all the moisture has been removed.
(20)
Do the close out procedure as follows:
(21)
Install the galley floor covering (AMM 25-27-211/401).
(22)
If applicable, close the electronic equipment compartment door.
(23)
If applicable, install the access panel on the rear bulkhead of the aft cargo compartment and close the aft cargo compartment door.
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BATTERY ELECTROLYTE CONTAMINATION CONDITION - MAINTENANCE PRACTICES (CONDITIONAL INSPECTION)
1. General
A. This procedure has these two tasks:
(1)
Lead Acid Battery Contamination
(2)
Alkaline Battery Contamination
B. The primary source of acid contamination is in the battery compartments.
C. Battery electrolytes can overflow during battery charging, or leak when the battery is serviced.
D. Contamination occurs at times and the acid must be made neutral before corrosion damage can occur.
E. Electrolyte contamination, unless you make it neutral, can quickly corrode a metallic structure.
F. Electrolyte can cause damage to materials such as fabrics, wood, leather, and other nonmetallic materials.
(1)
Electrolyte contamination can cause discoloration on the surface it touches.
Lead Acid Battery Contamination
A.
Standard Tools and Equipment
(1)
Rubber or plastic gloves (commercial)
(2)
Goggles - Safety (commercial)
(3)
Face shield (commercial)
(4)
Aprons (commercial)
(5)
Boots (commercial)
(6)
Head gear (commercial)
B.
Consumable Materials
(1)
Bicarbonate of soda (commercial)
(2)
Chemical - Sodium Bicarbonate (O-S-576) (commercial)
C.
Procedure
CAUTION: DO NOT GET BATTERY ELECTROLYTE (ACID) IN YOUR MOUTH, YOUR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE BATTERY ELECTROLYTE. PUT ON PROTECTIVE SPLASH GOGGLES AND GLOVES WHEN YOU CLEAN UP THE BATTERY ELECTROLYTE CONTAMINATION. KEEP THE FUMES FROM SPARKS, FLAMES, AND TEMPERATURES ABOVE THE FLASHPOINT. BATTERY ELECTROLYTE IS A POISONOUS AND FLAMMABLE MATERIAL WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
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