(3)
 Close the shutoff valve on the drain hose assemblies.

 (4)
 Make a solution of 5% vinegar and water (1 l (0.2641 USgal) of vinegar with 19 l (5.0192 USgal) of water).

 (5)
 In the Galleys

 Cleaning of the Waste Water Drain Lines
 Figure 701/TASK 38-32-00-991-001
 1EFF :  ALL  1  38-32-00 Page 703 
1  1  Feb 01/98
 1  1
 1CES  1

 (a) Clean the Drain Lines of the Beverage Maker, Coffee Maker, Combi-Brewer or Water Boiler/Heater
 1_ Slowly fill the sink of the galley equipment which is
 installed in the FWD and AFT galley with the mixture until it
 is full.

 2 Make sure that the mixture does not fill the washbasin in the
_ FWD or AFT lavatory.
 3 Let the mixture stay in the system for 1 hour.
_ 4 After 1 hour open the shutoff valves of the drain hose
_ assemblies and drain the system.
 5 Flush the wastewater lines with 5 l (1.3208 USgal) of clean
_ water.
 (b) Clean the Drain Lines of the Galley Sink 1 Slowly fill the sink of the FWD and AFT galley with the
_ mixture until it is full.
 2 Make sure that the mixture does not fill the washbasin in the
_ FWD or AFT lavatory.
 3 Let the mixture stay in the system for 1 hour.
_ 4 After 1 hour open the shutoff valve of the drain hose
_ assemblies and drain the system.
 5 Flush the wastewater lines with 5 l (1.3208 USgal) of clean
_ water.
 (6)
 If necessary, remove the drain hose assemblies from the drain masts.

 (7)
 In the Lavatories

 (8)
 Make sure that the shutoff valve on the drain hose assemblies is closed.

 (a)
 Slowly fill the washbasin of the FWD and AFT lavatories with the mixture until it is full.

 (b)
 Let the mixture stay in the system for 1 hour.

R 1EFF : 001-049, 052-099, 101-149, 151-199, 1 38-32-00Page 704 1201-299, 301-399, 401-499, 1Aug 01/05 1 1 1CES 1

 (c) After 1 hour open the shutoff valves of the drain hose assemblies
 and drain the system.
 (9) Flush the wastewater lines with 5 l (1.3208 USgal) of clean water.
 (10) Remove the drain hose assemblies from the drain masts. 
R  **ON A/C 051-051, 
R  Subtask 38-32-00-110-050-A 
R  A. Cleaning of the Waste Water Drain Lines 
R  (Ref. Fig. 701/TASK 38-32-00-991-001) 
R  WARNING : ALWAYS WEAR RUBBER GLOVES, GOGGLES AND PROTECTIVE CLOTHES WHEN_______ 
R  YOU DO THIS TASK. 
R  (1) Disconnect the drain hose of the cargo loading at the drain mast 4DU 
R  and 24DU. 
R  (a) Put blanking plugs on the disconnected line ends. 
R  (2) Put the small hose end of the drain hose assembly in drain line of 
R  each drain mast. 
R  NOTE : You must make sure that all connections of the waste water____ 
R  system are tightened. If the connections are loose liquid will 
R  flow into the lower fuselage. 
R  You must make sure that the hose end of the drain hose 
R  assembly is installed in the drain mast. If the hose end is 
R  installed over the drain mast, the liquid will flow back into 
R  the lower fuselage. 
R  (3) Put the end of the hose assemblies in a container. 
R  (4) Close the shutoff valve on the drain hose assemblies. 
R  (5) Make a solution of 5% vinegar and water (1 l (0.2641 USgal) of 
R  vinegar with 19 l (5.0192 USgal) of water).

R  (6) In the Galleys 
R  (a) Clean the Drain Lines of the Beverage Maker, Coffee Maker, 
R  Combi-Brewer or Water Boiler/Heater 
R  1_  Slowly fill the sink of the galley equipment which is
R  installed in the FWD and AFT galley with the mixture until it 
R  is full. 
R  2_  Make sure that the mixture does not fill the washbasin in the
R  FWD or AFT lavatory. 
R  3_  Let the mixture stay in the system for 1 hour.
R  4_  After 1 hour open the shutoff valves of the drain hose
R  assemblies and drain the system. 
R  5_  Flush the wastewater lines with 5 l (1.3208 USgal) of clean
R  water. 
R  (b) Clean the Drain Lines of the Galley Sink 
　
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