Operational Test of the Electronic Water Faucet

TASK 38-12-41-710-001-A
Operational Test of the Electronic Water Faucet

ZONE: 200

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

B. Referenced Information

REFERENCE	DESIGNATION
TASK 12-15-38-613-001-A	Fill the Potable Water Tank System (Aircraft Electrical Power Available)
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
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
Target Set Up for Test of Infrared Sensors

3. Job Set-up
Subtask 38-12-41-861-054-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 38-12-41-860-059-A ** ON A/C NOT FOR ALL

B. Preparation for Test
(1) Make sure that the potable water system is serviceable, if necessary do the servicing (Ref. AMM TASK 12-15-38-613-001).
(2) Make sure that the potable water-shutoff valves in the lavatories are open.
(3) Make sure that the power switch on the electronic control box is in the ON position, and the green control light is ON.

Subtask 38-12-41-865-056-A ** ON A/C NOT FOR ALL

C. Make sure that this(these) circuit breaker(s) is(are) closed:

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 38-12-41-614-053-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 38-12-41-710-051-A ** ON A/C NOT FOR ALL

A. Test

Target Set Up for Test of Infrared Sensors ** ON A/C NOT FOR ALL

NOTE: The water flows from the electronic water faucet in the washbasin after the activation of the infrared sensor, and stops after the deactivation of the infrared sensor. Then, the water flows again from the electronic water faucet in the washbasin without the activation of the infrared sensor. This rinse cycle procedure is automatic and is used to clean the washbasin after the operation of the electronic water faucet.

ACTION	RESULT
1.In the lavatory: Put the standard target in position in front of the infrared sensor.	In the lavatory: The water flows in the washbasin. NOTE: The water will flow from the electronic water faucet as long as the standard target is put in front of the infrared sensor.
2.In the lavatory: Remove the standard target from in front of the infrared sensor.	In the lavatory: The water flow stops in 1 s or less.
3.In the Lavatory: Push the HOT membrane switch at the electronic water faucet.	In the lavatory: The hot water flows immediately into the washbasin. The water flow stops after 4 s.
4.In the lavatory: Push the COLD (blue) membrane switch.	In the lavatory: The cold water flows immediately into the washbasin. The water flow stops after 4 s.
5.In the lavatory: Push the HOT (red) membrane switch and after 2 s, push the CLOD (blue) membrane switch.	In the lavatory: The hot water which comes from the electronic water faucet, changes to cold water in less than 1 s after the COLD (blue) membrane switch is pushed. The water flow stops after 4 s.

5. Close-up
Subtask 38-12-41-410-059-A ** ON A/C NOT FOR ALL

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

Subtask 38-12-41-862-054-A ** ON A/C NOT FOR ALL

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

Subtask 38-12-41-942-050-A ** ON A/C NOT FOR ALL

C. Remove the ground support and maintenance equipment, the special and standard tools and all other items.

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