**ON A/C 001-049, 101-149, 201-299, 301-399,
 Subtask 30-71-51-865-050
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------

R  2000VU WASTE WIP - DRAINMAST FWD 1DU B06 2001VU WASTE WIP - DRAINMAST AFT 11DU E01

R **ON A/C 051-051,

R  Subtask 30-71-51-865-050-D 
R  B. Open, safety and tag this(these) circuit breaker(s): 
R R R R R R  -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2000VU ICE PROT - DRAINMAST FWD 1DU D02 2001VU ICE PROT - DRAINMAST MID 21DU D07 2001VU ICE PROT - DRAINMAST AFT 11DU D06 
R  **ON A/C 052-099, 
R  Subtask 30-71-51-865-050-A 
R  B. Open, safety and tag this(these) circuit breaker(s): 
R R R R R  -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2000VU DRAINMAST (FWD) 1DU D01 2001VU DRAINMAST (AFT) 11DU D05
 **ON A/C 151-199,
 Subtask 30-71-51-865-050-C
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2000VU WASTE WIP - DRAINMAST FWD 1DU D01 2001VU WASTE WIP - DRAINMAST AFT 11DU E01 

R 1EFF : 051-099, 151-199, 1 30-71-51Page 403 1 1 May 01/05 1 1 1CES 1

R **ON A/C 401-499,

R  Subtask 30-71-51-865-050-B 
R  B. Open, safety and tag this(these) circuit breaker(s): 
R R R R R  -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2000VU WASTE WATER ICE PROT - DRAINMAST FWD 1DU B06 2001VU WASTE WATER ICE PROT - DRAINMAST AFT 11DU E01
 **ON A/C 001-049, 052-061, 101-103, 201-210,
 Subtask 30-71-51-010-050
 C. Get Access
 (1) FOR 4DU, 14DU
 (a) Release the pressure of the potable water system (Ref. TASK 38-10-00-614-002).
 (b) Operate the wash basin faucet to remove any remaining water still in the potable water lines.
 (c) Ensure the wash basin plug is fitted in the wash basin drain hole, to prevent any remaining water still in the potable water lines draining down to the drain mast.
 (d) Operate the galley faucets to remove any remaining water still in the potable water lines.
 (2) FOR 4DU
 (a) Open the FWD cargo-compartment door (Ref. TASK 52-30-00-860-001).
 (b) Set the CARGO COMP LIGHT switch 6LU to ON.
 (c) Remove the floor panel 131SF to get access to the DRAINMAST-FWD (4DU) (Ref. TASK 53-22-14-000-001). 

R 1EFF : 001-049, 052-061, 101-103, 201-210, 1 30-71-51Page 404 1401-499, 1Aug 01/05 1 1 1CES 1

 (3) FOR 14DU

 (a)
 Put an access platform in position at the DRAINMAST-AFT (14DU).

 (b)
 Open the AFT cargo-compartment door (Ref. TASK 52-30-00-860-001).

 (c)
 Set the CARGO COMP LIGHT switch 8LU to ON.

 (d)
 Remove the partition 162DW to get access to the DRAINMAST-AFT (14DU).

 **ON A/C 051-051,
 Subtask 30-71-51-010-050-C
 C. Get Access
 (1)
 FOR 4DU, 14DU, 24DU

 (a)
 Release the pressure of the potable water system (Ref. TASK 38-10-00-614-002).

 (b)
 Operate the wash basin faucet to remove any remaining water still in the potable water lines.

 (c)
 Ensure the wash basin plug is fitted in the wash basin drain hole, to prevent any remaining water still in the potable water lines draining down to the drain mast.

 (d)
 Operate the galley faucets to remove any remaining water still in the potable water lines.

 (2)
 FOR 4DU

 (a)
 Open the FWD cargo-compartment door (Ref. TASK 52-30-00-860-001).

 (b)
 Set the CARGO COMP LIGHT switch 6LU to ON.

 (c)
 Remove the floor panel 131SF to get access to the DRAINMAST-FWD (4DU) (Ref. TASK 53-22-14-000-001).

 (3)
 FOR 14DU

 (a)
 Put an access platform in position at the DRAINMAST-AFT (14DU).
　
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