Removal of the Water Conditioner

TASK 38-12-11-000-001-A
Removal of the Water Conditioner

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	2	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
161DW

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-24-38-680-001-A	Draining of the Potable Water System (with Electrical Power)
TASK 12-24-38-680-002-A	Draining of the Potable Water System (without Electrical Power)
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 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
Water Conditioner

3. Job Set-up
Subtask 38-12-11-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 38-12-11-680-050-A ** ON A/C NOT FOR ALL

B. Drain the potable water system (Ref. AMM TASK 12-24-38-680-001) (Ref. AMM TASK 12-24-38-680-002).

Subtask 38-12-11-865-050-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	WATER SYS-AIR-COMPRESSOR	19MD	F01
** ON A/C NOT FOR ALL
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	WATER SYS-DRAIN	1MP	B05

Subtask 38-12-11-010-050-B ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(2) Put the WARNING NOTICE(S) in position on the potable-water service panel to tell persons not to fill or pressurize the potable water system.
(3) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001) (Ref. AMM TASK 52-30-00-860-003).
(4) Set cargo-compartment light switch 8LU to ON position.
(5) Put an ACCESS PLATFORM 2M (6 FT) below partition 161DW.
(6) Remove partition 161DW (Ref. AMM TASK 25-55-12-000-001).

4. Procedure
Subtask 38-12-11-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Water Conditioner

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: MAKE SURE THAT THE EQUIPMENT YOU USE FOR THIS PROCEDURE IS CLEAN AND APPROVED FOR THE POTABLE WATER SYSTEM. IF NOT IT CAN CAUSE CONTAMINATION OF THE POTABLE WATER SYSTEM.

(1) Open and remove the insulation pack (2) from around the water conditioner (4).
(2) Disconnect the water lines (1) and (5).
(3) Put PLUG - BLANKING on the disconnected line ends.
(4) Loosen the clamps (3) and carefully remove the water conditioner (4).

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