Fill the Potable Water Tank System (Aircraft Electrical Power Available)

TASK 12-15-38-613-001-A
Fill the Potable Water Tank System (Aircraft Electrical Power Available)

WARNING: DO NOT DO WORK ON THE TOILET WASTE SYSTEM AND THE POTABLE WATER SYSTEM AT THE SAME TIME. THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH.

WARNING: BEFORE YOU DO WORK ON THE POTABLE WATER SYSTEM, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION. (CONTAMINATION FROM TOILET WASTE IS DANGEROUS TO HEALTH).

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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.

CAUTION: MAKE SURE THAT THE DRAIN VALVES STAY IN THE DRAIN POSITION AFTER YOU DRAIN THE POTABLE WATER SYSTEM IF:

THE BLEED AIR SYSTEM IS OFF, AND
THE OUTSIDE AIR TEMPERATURE IS BELOW 0 DEG.C (32 DEG.F).

THIS WILL PREVENT DAMAGE TO THE POTABLE WATER SYSTEM.

NOTE: The instructions necessary to fill the potable water system if the electrical power is not available are given in (Ref. AMM TASK 12-15-38-613-002).

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. Consumable Materials

REFERENCE	DESIGNATION
(Material No.11AAA2)	Disinfectant-Aircraft General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
171AL

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-15-38-613-002-A	Fill the Potable Water Tank System (Aircraft Electrical Power not Available)
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)
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 12-15-38-613-002-A	Fill the Potable Water Tank System (Aircraft Electrical Power not Available) (for corrective action)
Potable Water Service-Panel 2023VU ** ON A/C NOT FOR ALL
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 12-15-38-861-050-A

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

Subtask 12-15-38-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WATER SYSTEM-QANT-IND	1MA	B01
** ON A/C NOT FOR ALL
2001VU	WATER SYS-QUANT-IND	1MA	B06
** ON A/C NOT FOR ALL
2001VU	WATER SYS-DRAIN	1MP	B05
** ON A/C NOT FOR ALL
2001VU	WATER-SYS-DRAIN	1MP	B05

Subtask 12-15-38-618-050-A

C. 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 12-15-38-010-050-A ** ON A/C NOT FOR ALL

D. Get 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 12-15-38-010-050-B ** ON A/C NOT FOR ALL

D. Get 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) Get access to the cabin.
(4) Open the POTABLE WATER FILL AND DRAIN port on service panel 2023VU.

4. Procedure
Subtask 12-15-38-613-054-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 12-15-38-613-050-B ** ON A/C NOT FOR ALL

B. Fill the Potable Water System
(1) Clean the potable water fill and drain port:
(a) Soak the Textile-Lint free Cotton - (Material No.14SBA1) with Disinfectant-Aircraft General - - (Material No.11AAA2) .
(b) Clean the potable water fill and drain port with a soaked Textile-Lint free Cotton - (Material No.14SBA1) .

NOTE: It is not recommended to do the spray and clean procedure for potable water fill and drain port.

(c) Dry the wet area with a Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Connect the fill hose to the potable water fill and drain port:

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.

(a) Connect the fill hose of the CART - SERVICING, WATER, POTABLE or WATER SOURCE - GROUND to the POTABLE WATER FILL AND DRAIN port.

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.

(3) On the panel 120RH:

Push the IND ON membrane switch
Push the membrane switch for the necessary quantity.

(4) On the service panel:

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

(5) Operate the water service vehicle.

NOTE: The FILL/OVERFLOW/DRAIN handle will automatically move back to the NORMAL position when the TANK FULL light comes on.

NOTE: If there is too much water in the tank, water will flow from the "POTABLE WATER OVERFLOW" port.

(a) Stop the water service vehicle.
(b) Disconnect the hose from the POTABLE WATER FILL AND DRAIN port.
(c) Clean and dry the service panel and the adjacent area.
(d) Visually examine the connections for leaks. Leaks are not permitted.
(e) Put the cap on the POTABLE WATER FILL AND DRAIN port.

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

Subtask 12-15-38-613-050-E ** ON A/C NOT FOR ALL

B. Fill the Potable Water system

CAUTION: BEFORE YOU DO THE SERVICING OF THE POTABLE-WATER TANK, MAKE SURE THAT THE QUANTITY INDICATION SYSTEM IS ENERGIZED AND OPERATES CORRECTLY. IF IT IS NOT, YOU MUST SET THE CONTROL HANDLE (326MM) TO OPEN THE OVERFLOW VALVE (8MP). IF THIS VALVE IS NOT OPEN, WATER CAN FLOW INTO THE PASSENGER COMPARTMENT.

(1) If the indication system does not operate satisfactorily, do the servicing without electrical power (Ref. AMM TASK 12-15-38-613-002).

NOTE: The "Overflow valve open" light 6MP on the serive panel 2023VU must be on when the overflow valve 8MP is opened.

NOTE: If the indication system does not operate and electrical power is necessary on aircraft, you can open the CB 1MA (water system quantity indicator) (Ref. AMM TASK 12-15-38-613-002).

(2) Clean the potable water fill and drain port:
(a) Soak the Textile-Lint free Cotton - (Material No.14SBA1) with Disinfectant-Aircraft General - - (Material No.11AAA2) .
(b) Clean the potable water fill and drain port with a soaked Textile-Lint free Cotton - (Material No.14SBA1) .

NOTE: It is not recommended to do the spray and clean procedure for potable water fill and drain port.

(c) Dry the wet area with a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Connect the fill hose to the potable water fill and drain port:

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.

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

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

NOTE: The OVERFLOW VALVE OPEN light 6MP comes on.

(5) If the OVERFLOW VALVE OPEN light 6MP does not come on:

Examine the position of the overflow valve 8MP.

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.

(6) Fill the potable water system:

NOTE: The "Overflow valve open" light 6MP on the service panel 2023VU must be off when the overflow valve 8MP is closed.

(a) Operate the water service vehicle.

NOTE: If the filling level is to be less than full, push in the Fill/DRAIN handle and turn it to the NORMAL position. The Quantity Indicator shows the filling level.

NOTE: The FILL/DRAIN handle will automatically move back to the NORMAL position when the TANK FULL light comes on.
The OVERFLOW VALVE OPEN light 6MP goes off.

NOTE: If there is too much water in the tank, water will flow from the TANK OVERFLOW port.

1 If the OVERFLOW VALVE OPEN light 6MP does not go off:

Examine the overflow valve 8MP.

NOTE: If the tank is overfilled, water will flow from the "TANK OVERFLOW" port.

2 Stop the water service vehicle.
3 Disconnect the hose from the POTABLE WATER FILL AND DRAIN port.
4 Clean and dry the service panel and the adjacent area.
5 Visually examine the connections for leaks. Leaks are not permitted.
6 Put the cap on the POTABLE WATER FILL AND DRAIN port.

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

Subtask 12-15-38-613-050-H ** ON A/C NOT FOR ALL

NOTE: It is not recommended to do the spray and clean procedure for potable water fill and drain port.

(c) Dry the wet area with a Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Connect the fill hose to the potable water fill and drain port:

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.

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

Turn the FILL/OVERFLOW/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 the quantity indicator shows the necessary quantity.

NOTE: If the filling level is to be less than full, push in the Fill/OVERFLOW/ DRAIN handle and turn it to the NORMAL position. The Quantity Indicator shows the filling level.

(5) Push in the FILL/OVERFLOW/DRAIN handle and turn it to the NORMAL position.

NOTE: The FILL/OVERFLOW/DRAIN handle will automatically go back to the NORMAL position when the TANK FULL light comes on.

NOTE: If there is too much water in the tank, water will flow from the "POTABLE WATER OVERFLOW" port.

(a) Stop the water service vehicle.
(b) Disconnect the hose from the POTABLE WATER FILL AND DRAIN port.
(c) Clean and dry the service panel and the adjacent area.
(d) Visually examine the connections for leaks.
1 If there are leaks, repair them.
(e) Put the cap on the POTABLE WATER FILL AND DRAIN port.

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

5. Close-up
Subtask 12-15-38-410-050-A

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 12-15-38-862-050-A

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

[Rev.10 from 2021] 2026.03.31 22:56:01 UTC