4. Procedure
_________
 **ON A/C 001-003, 051-052,

 (Ref. Fig. 401/TASK 38-31-56-991-001) R **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 38-31-56-991-001-B)
 **ON A/C ALL

 Subtask 38-31-56-420-050
 A. Installation of the Anti-Syphon Valve
 (1)
 Remove blanking plugs from the disconnected line ends.

 (2)
 Apply COMMON GREASE (Material No. 04-012) to the new O-ring (1) O-rings (6) and install them.

 (3)
 Put the anti-syphon valve (4) in position.

 (4)
 Install the washers (2) and the nuts (3).

 (5)
 Install the sleeve (8) and the coupling clamp (7).

 (6)
 Remove the blanking cap from the suction port of the toilet bowl.

 (7) Open the shut off valve (5).
 **ON A/C 001-049, 051-099, 101-105,

 Subtask 38-31-56-865-061
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

 -------------------------------------------------------------------------------
PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2001VU VACUUM TOILET SYSTEM/LAVATORY POWER 32MG A01 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER 45MG A02 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER 39MG A03 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER 34MG A04 2001VU VACUUM TOILET SYSTEM/VACUUM SYS 35MG A06 2001VU VACUUM TOILET SYSTEM/VACUUM GEN 33MG A08

R **ON A/C 106-149, 151-199, 201-299,
 Subtask 38-31-56-865-061-A
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit
 breaker(s): -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2001VU VACUUM TOILET SYSTEM/LAVATORY POWER A 32MG A01 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER 45MG A02 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER D 39MG A03 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER E 34MG A04 2001VU VACUUM TOILET SYSTEM/VACUUM SYS 35MG A06 2001VU VACUUM TOILET SYSTEM/VACUUM GEN 33MG A08
 **ON A/C 301-399,
 Subtask 38-31-56-865-061-B
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit
 breaker(s): -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2001VU VACUUM TOILET SYSTEM/LAVATORY POWER A 32MG A01 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER L 45MG A02 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER D 39MG A03 2001VU VACUUM TOILET SYSTEM/LAVATORY POWER E 34MG A04 2001VU VACUUM TOILET SYSTEM/VACUUM SYS 35MG A06 2001VU VACUUM TOILET SYSTEM/VACUUM GEN 33MG A08

 **ON A/C ALL

 Subtask 38-31-56-790-050
 C. Leak Test
 (1)
 Operate the toilet and make sure that it flushes correctly (Ref. TASK 38-31-00-710-009).

 (2)
 Make sure that the anti-syphon valve does not leak.

 5. Close-up
________ Subtask 38-31-56-410-050
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the toilet shroud (Ref. TASK 25-45-22-400-001).

 (3)
 Close the lavatory door.

 (4) Put the system back to the serviceable condition. Subtask 38-31-56-862-050
 B. De-energize the ground service network
 (Ref. TASK 24-42-00-862-001).

 VALVE - FLUSH - REMOVAL/INSTALLATION
____________________________________
 TASK 38-31-57-000-001
 Removal of the Flush Valve 
R R R  WARNING : DO NOT DO WORK ON THE TOILET WASTE SYSTEM AND THE POTABLE WATER_______ SYSTEM AT THE SAME TIME. THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH. 
R R R R R R  WARNING : ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:_______ - ON THE TOILET WASTE SYSTEM, OR - ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE SYSTEM. WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (TOILET WASTE IS DANGEROUS FOR HEALTH). 
R R R R R R  WARNING : WHEN YOU REMOVE A COMPONENT OF THE TOILET WASTE SYSTEM, ALWAYS PUT IT_______ IN A PLASTIC BAG, THEN SEAL THE BAG. DO NOT PUT DOCUMENTS INTO THE PLASTIC BAG. SEAL THE BAG FIRST, THEN ATTACH THE DOCUMENT TO IT. THIS WILL PREVENT INFECTION (CONTAMINATION FROM TOILET WASTE CAN BE DANGEROUS TO HEALTH).
 NOTE : The removal of the flush valve in the lavatories is the same.____
 1. Reason for the Job__________________
　
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