Installation of the Electronic Control Box

TASK 38-12-41-400-005-A
Installation of the Electronic Control Box

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 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 38-12-41-710-001-A	Operational Test of the Electronic Water Faucet
Electronic Control Box

3. Job Set-up
Subtask 38-12-41-860-058-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized from the external power (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).

Subtask 38-12-41-865-055-A ** ON A/C NOT FOR ALL

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
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01

4. Procedure
Subtask 38-12-41-420-054-A ** ON A/C NOT FOR ALL

A. Installation of the Electronic Control Box
(1) Put the electronic box (1) in position.
(2) Install the washers (2) and the screws (3).
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Connect the electrical connectors (4), (5), (6) and (7).
(5) Make sure that all the electrical connections are clean and in the correct condition.

5. Close-up
Subtask 38-12-41-865-072-A ** ON A/C NOT FOR ALL

A. 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
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01

Subtask 38-12-41-710-050-A ** ON A/C NOT FOR ALL

B. Do the operational test of the electronic water faucet (Ref. AMM TASK 38-12-41-710-001).

Subtask 38-12-41-410-058-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 38-12-41-862-053-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.02 06:25:40 UTC