Fill the Potable Water Tank System (Aircraft Electrical Power not Available)

TASK 12-15-38-613-002-A
Fill the Potable Water Tank System (Aircraft Electrical Power not Available)

CAUTION: MAKE SURE THAT THE WATER PRESSURE IS NOT MORE THAN 3.45 BARS (50.0 PSI). IF THE WATER PRESSURE IS MORE THAN 3.45 BARS (50.0 PSI), DAMAGE TO EQUIPMENT CAN OCCUR.

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	1	CART - SERVICING, WATER, POTABLE
No specific	1	WATER SOURCE - GROUND
98D38108003000	2	SUPPORT WS PANEL DOOR

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
171AL
192NB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-31-38-660-001-A	Cold Weather Maintenance - Water/Waste
TASK 12-33-21-618-001-A	Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Available)
TASK 12-33-21-618-001-A-01	Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02	Pre-conditioning with the APU
TASK 12-33-21-618-001-A-03	Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Not Available)
Potable Water Service-Panel 2023VU ** ON A/C NOT FOR ALL
Potable water Service-Panel 2023VU ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 12-15-38-618-051-A

A. Preparation to Fill the Potable Water System
(1) Obey the cold weather maintenance procedure (Ref. AMM TASK 12-31-38-660-001).
(2) If the temperature in the aircraft is below 4 DEG.C (39.20 DEG.F) do the pre-conditioning procedure (Ref. AMM TASK 12-33-21-618-001).

Subtask 12-15-38-010-051-A ** ON A/C NOT FOR ALL

B. Open for Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position.
(2) Open access panel 171AL:

NOTE: The installation of the SUPPORT WS PANEL DOOR device is not mandatory, if the aircraft is in the hangar.

(a) Install the 98D38108003000 SUPPORT WS PANEL DOOR to the access panel.
(3) Open the POTABLE WATER FILL AND DRAIN port on service panel 2023VU.

Subtask 12-15-38-010-051-B ** ON A/C NOT FOR ALL

B. Open for Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position.
(2) Open access panel 171AL:

NOTE: The installation of the SUPPORT WS PANEL DOOR device is not mandatory, if the aircraft is in the hangar.

(a) Install the 98D38108003000 SUPPORT WS PANEL DOOR to the access panel.
(3) Open the POTABLE WATER FILL AND DRAIN port on service panel 2023VU.
(4) Open access panel 192NB:
(a) Install the 98D38108003000 SUPPORT WS PANEL DOOR to the access panel.

4. Procedure
Subtask 12-15-38-613-055-A

A. Add Chlorine to the Potable Water
(1) During the potable water servicing, you can also add chlorine to the potable water.

(2) You can use an in-line water filter cartridge to filter the potable water supplied to the A/C.

Subtask 12-15-38-613-052-A ** ON A/C NOT FOR ALL

B. Fill the Potable Water System

CAUTION: MAKE SURE THAT THE WATER PRESSURE IS NOT MORE THAN 3.45 BARS (50.0 PSI). IF THE WATER PRESSURE IS MORE THAN 3.45 BARS (50.0 PSI), DAMAGE TO EQUIPMENT CAN OCCUR.

(1) Connect the fill hose of the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND to the POTABLE WATER FILL AND DRAIN port.
(2) On the service panel 2023VU:

Turn the FILL/OVERFLOW/DRAIN handle to the PULL TO FILL position.
Then pull it out to the mechanical stop.

(3) Operate the water service vehicle and fill the potable water tank until water comes from the POTABLE WATER OVERFLOW port.
(4) Stop the water service vehicle.
(5) Push in and then turn the FILL/OVERFLOW/DRAIN handle to the NORMAL position.
(6) Disconnect the hose of the water service vehicle from the fill and drain port.
(7) Clean and dry the service panel and the adjacent area.
(8) Visually examine the connections for leaks. Leaks are not permitted.
(9) Close the fill and drain port on the service panel.

NOTE: If you do the servicing in cold weather conditions, the FILL AND DRAIN port must stay open as long as possible to drain the residual water from the fill and drain line.

Subtask 12-15-38-613-052-B ** ON A/C NOT FOR ALL

B. Fill the Potable Water System

CAUTION: MAKE SURE THAT THE WATER PRESSURE IS NOT MORE THAN 3.45 BARS (50.0 PSI). IF THE WATER PRESSURE IS MORE THAN 3.45 BARS (50.0 PSI), DAMAGE TO EQUIPMENT CAN OCCUR.

(1) Connect the fill hose of the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND to the POTABLE WATER FILL AND DRAIN port.
(2) On the service panel 192NB:

Turn the TANK OVERFLOW handle to the OPEN position.

(3) On the service panel 2023VU:

Turn the FILL/DRAIN handle to the PULL TO FILL position,
Then pull it out to the mechanical stop.

(4) Operate the water service vehicle and fill the potable water tank until water comes from the TANK OVERFLOW port.
(5) Stop the water service vehicle.
(6) Push in and then turn the FILL AND DRAIN handle to the NORMAL position.
(7) Disconnect the hose of the water service vehicle from the fill and drain port.
(8) Turn the TANK OVERFLOW handle to the CLOSE position.
(9) Clean and dry the overflow port and the adjacent area.
(10) Visually examine the connections for leaks. Leaks are not permitted.
(11) Close the fill and drain port on the service panel.

NOTE: If you do the servicing in cold weather conditions, the FILL AND DRAIN port must stay open as long as possible to drain the residual water from the fill and drain line.

5. Close-up
Subtask 12-15-38-410-051-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.
(2) Close access panel 171AL:
(a) Remove the 98D38108003000 SUPPORT WS PANEL DOOR from the access panel.

NOTE: Make sure that the latches are correctly locked and that the door makes a continuous surface with the skin of the aircraft.

(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 12-15-38-410-051-B ** ON A/C NOT FOR ALL

NOTE: Make sure that the latches are correctly locked and that the door makes a continuous surface with the skin of the aircraft.

(3) Close access panel 192NB:
(a) Remove the 98D38108003000 SUPPORT WS PANEL DOOR from the access panel.

NOTE: Make sure that the latches are correctly locked and that the door makes a continuous surface with the skin of the aircraft.

(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 03:56:42 UTC