(i)  
Use a dry air supply to fully to remove additional moisture from the contaminated areas which are difficult to touch.

 (j)  
If there are surface areas which remain with a blue stain, make a record of the precise location.

 NOTE: A record of a blue stain area can help to find the cause
____ of a possible new leak of blue water, should a leak occur in the future.
 S 162-068
 (5)  If blue water is found in the electronic-equipment compartment , do the steps that follow:
 WARNING: DO NOT USE TOO MUCH FRESH WATER TO REMOVE THE BLUE STAIN
_______ BECAUSE ADDITIONAL WATER COULD CAUSE POSSIBLE DAMAGE TO ELECTRICAL EQUIPMENT. THIS CAN RESULT IN AN UNWANTED EFFECT ON THE FLIGHT SAFETY OF THE AIRPLANE.
 (a)  
Protect adjacent areas to the contaminated area, from the cleaning procedure, by the use of polyethylene sheeting as a waterproof cover.

 (b)  
Use clean fresh water to dilute contaminated areas of the blue stain.

 (c)  
Use a clean absorbent cloth or a sponge to remove laying blue water from all areas shown during the toilet over-servicing inspection of the electronic equipment compartment.

 NOTE: It is important that all blue stains are removed from
____ the area. This will allow accurate visual inspections to be done in the future.
 (d)  If the airstair drip pan is contaminated by blue water, do the steps that follow: 1) Make sure the airstair drip pan is drained of liquid.
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 (e)
(f)

(g)

(h)

(i)

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737-300/400/500MAINTENANCE MANUAL
 2) Remove the access panel on the airstair drip pan (AMM 25-51-01/401). 3) Fully clean the airstair drip pan and access panel with fresh water. 4) Make sure the drain in the access panel is free from
 blockage.If the moisture shroud is contaminated by blue water, remove the moisture shroud from the airplane (AMM 25-51-01/401) and clean with fresh water.
 NOTE: It is not recommended to clean the shroud in the
____ installed configuration, damage can occur to the shroud.
Make sure all moisture-shroud drain channels are clean and free from blockage.Use a clean cloth to fully dry all surfaces and use a dry air supply to dry the areas which are difficult to touch.If the area below the toilet-tank shows signs of blue water contamination, fully clean the drain tube, the ground flush hose or the drain-valve control-cable with fresh water.
 NOTE: You must be most carefully with the use of water in the
____ electronic equipment compartment, additional contamination must not occur.
If the blue water contamination shows on on the electronic
 racks and equipment, do the steps that follow:
 1) Remove blue water from all surfaces, cables and connectors.
 2) Use a dry air supply 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.
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 3)  Do a check of contaminated connectors for blue water ingress and dry as necessary.
 NOTE:____ If you think a connector is contaminated with blue
 water, you must disconnect and fully examine the
 connector and the related equipment connector.
 (j)  Remove all signs of blue water from tubes which could conduct
 moisture, such as the pitot-static tubes, as necessary.
 (k)  Do an operational test of equipments which possibly, could have
 been contaminated with blue water.

 S 792-069
 (6)  
Do a check of all hose connections and tighten connector clamps as necessary.
　
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