Reactivation of the Lavatory Water Supply

TASK 38-12-00-440-001-A
Reactivation of the Lavatory Water Supply

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 38-10-00-614-001-A	Pressurization of the Potable Water System from a Ground Air Supply
TASK 38-10-00-614-003-A	Pressurization of the Potable Water System with the Compressor

3. Job Set-up
Subtask 38-12-00-861-057-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 38-12-00-865-064-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	LAV FWD & MID-HOT WATER-A	1MB	F02
** ON A/C NOT FOR ALL
2000VU	LAV FWD-HOT WATER-A	1MB	F02
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-E	34MG	A04
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-E	9MB	B03
** ON A/C ALL
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-G	9MB	B03
2001VU	LAV AFT-HOT WATER-D/F	2MB	B02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-G	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-F	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-D	45MG	A02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER	9MB	B03
2001VU	LAV AFT-HOT WATER	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-E/L	9MB	B03
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	23MG	A05
2001VU	LAV AFT-HOT WATER-L	9MB	C04
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04
2001VU	LAV AFT-HOT WATER-M	9MB	B03

Subtask 38-12-00-010-058-A

C. Get Access
(1) Get access to the related lavatory and open the lavatory sanitation door.

4. Procedure
Subtask 38-12-00-440-050-B

A. Reactivation of the Water Faucet
(1) After fault isolation and repair, reactivate the toilet assembly.
(2) Open the potable-water shutoff valve.
(3) Remove the PLACARD.

Subtask 38-12-00-865-065-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	LAV FWD & MID-HOT WATER-A	1MB	F02
** ON A/C NOT FOR ALL
2000VU	LAV FWD-HOT WATER-A	1MB	F02
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-E	34MG	A04
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-E	9MB	B03
** ON A/C ALL
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-G	9MB	B03
2001VU	LAV AFT-HOT WATER-D/F	2MB	B02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-G	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-F	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-D	45MG	A02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER	9MB	B03
2001VU	LAV AFT-HOT WATER	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-E/L	9MB	B03
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	23MG	A05
2001VU	LAV AFT-HOT WATER-L	9MB	C04
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04
2001VU	LAV AFT-HOT WATER-M	9MB	B03

Subtask 38-12-00-614-057-A

C. Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) or (Ref. AMM TASK 38-10-00-614-003).

Subtask 38-12-00-710-056-B

D. Operational Test
(1) Push the toilet flush button and make sure that the toilet operates correctly.
(2) Operate the water faucet of the washbasin and make sure that the water flow is correct.

5. Close-up
Subtask 38-12-00-410-059-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 38-12-00-862-057-A

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.02 06:25:38 UTC