DOC AIRBUS | AMM A320FInstallation of the Water Heater
TASK 38-12-16-400-001-A
Installation of the Water Heater
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 38-12-16-860-051-A
Subtask 38-12-16-420-051-C
Subtask 38-12-16-410-051-A
[Rev.10 from 2021]
2026.04.02 06:25:39 UTC
Installation of the Water Heater
ZONE: 200
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 200 | UPPER HALF FUSELAGE |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-15-38-613-001-A | Fill the Potable Water Tank System (Aircraft Electrical Power Available) |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| 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 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 38-10-00-614-001-A | Pressurization of the Potable Water System from a Ground Air Supply |
| TASK 38-10-00-614-002-A | Depressurization of the Potable Water System |
| TASK 38-10-00-670-805-A | Local Disinfection of the Potable-Water System Components |
| TASK 38-12-00-710-004-A | Operational Test of a Potable Water Heater |
Water HeaterSubtask 38-12-16-860-051-A
A. Aircraft Maintenance Configuration
(1) Make that the electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(3) Make sure that the shutoff valves are in the CLOSED position.
(4) Make sure that the switch is in the OFF position:
(a) If necessary, use a FLASHLIGHT and MIRROR - INSPECTION, FLEXIBLE to find the power switch of the water heater.
(5) Make sure that a CONTAINER 1 L (1/4 USGAL) is below the water heater to collect the unwanted water.
Subtask 38-12-16-865-059-A (1) Make that the electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(3) Make sure that the shutoff valves are in the CLOSED position.
(4) Make sure that the switch is in the OFF position:
(a) If necessary, use a FLASHLIGHT and MIRROR - INSPECTION, FLEXIBLE to find the power switch of the water heater.
(5) Make sure that a CONTAINER 1 L (1/4 USGAL) is below the water heater to collect the unwanted water.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 38-12-16-560-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD & MID-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAVATORY AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-G | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER-D/F | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E/L | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-L | 9MB | C04 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D/L | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-M | 9MB | B03 |
C. Preparation of the Removed Component
(1) Clean and disinfect the component interface and/or the adjacent area (Ref. AMM TASK 38-10-00-670-805).
(2) Make sure that the component is in a good condition.
4. Procedure(1) Clean and disinfect the component interface and/or the adjacent area (Ref. AMM TASK 38-10-00-670-805).
(2) Make sure that the component is in a good condition.
Subtask 38-12-16-420-051-C
A. Installation of the Water Heater (1)
(1) Put the water heater (1) in position.
(2) Install the clamps (2).
(a) TORQUE the clamps (2) with the P/N ASNA0032-112 and a width of 13 mm (0.51 in.) to 0.6 m.daN (53.10 lbf.in )
.
(b) TORQUE the clamps (2) with the P/N ASNA0033-112 and a width of 8 mm (0.31 in.) to 0.2 m.daN (17.70 lbf.in ).
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Connect the pipes (3) and (4) to the water heater (1) and TORQUE to between 1.69 and 1.41 m.daN (12.46 and 10.40 lbf.ft ).
(5) Put the bonding strap (6) in position and install the nut (5).
(6) Protect the bonding (Ref. AMM TASK 20-28-00-912-802).
(7) Remove the CAP-BLANKING from each electrical connector and receptacle.
(8) Make sure that all the electrical connections are clean and in the correct condition.
(9) Connect the electrical connector (8).
Subtask 38-12-16-860-050-C (1) Put the water heater (1) in position.
(2) Install the clamps (2).
(a) TORQUE the clamps (2) with the P/N ASNA0032-112 and a width of 13 mm (0.51 in.) to 0.6 m.daN (53.10 lbf.in )
. (b) TORQUE the clamps (2) with the P/N ASNA0033-112 and a width of 8 mm (0.31 in.) to 0.2 m.daN (17.70 lbf.in )
. (3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Connect the pipes (3) and (4) to the water heater (1) and TORQUE to between 1.69 and 1.41 m.daN (12.46 and 10.40 lbf.ft )
. (5) Put the bonding strap (6) in position and install the nut (5).
(6) Protect the bonding (Ref. AMM TASK 20-28-00-912-802).
(7) Remove the CAP-BLANKING from each electrical connector and receptacle.
(8) Make sure that all the electrical connections are clean and in the correct condition.
(9) Connect the electrical connector (8).
B. Preparation for Test
(1) Turn the shutoff valve (9) to the OPEN position.
(2) Turn the switch (7) to the ON position:
(a) If necessary, use a FLASHLIGHT and MIRROR - INSPECTION, FLEXIBLE to find the switch (7) of the water heater (1).
(3) If necessary fill the potable tank (Ref. AMM TASK 12-15-38-613-001).
(4) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
Subtask 38-12-16-865-063-A (1) Turn the shutoff valve (9) to the OPEN position.
(2) Turn the switch (7) to the ON position:
(a) If necessary, use a FLASHLIGHT and MIRROR - INSPECTION, FLEXIBLE to find the switch (7) of the water heater (1).
(3) If necessary fill the potable tank (Ref. AMM TASK 12-15-38-613-001).
(4) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 38-12-16-710-050-A Subtask 38-12-16-790-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD & MID-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2000VU | LAV FWD-HOT WATER-A | 1MB | F02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAVATORY AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-G | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER-D/F | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER | 9MB | B03 |
| 2001VU | LAV AFT-HOT WATER | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-E/L | 9MB | B03 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-L | 9MB | C04 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-D/L | 2MB | B02 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | LAV AFT-HOT WATER-M | 9MB | B03 |
E. Leak Check
(1) If necessary, fill the potable water system (Ref. AMM TASK 12-15-38-613-001).
(2) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
(3) Make sure that the shutoff valves are in the open position.
(4) Examine the water heater for leaks.
5. Close-up(1) If necessary, fill the potable water system (Ref. AMM TASK 12-15-38-613-001).
(2) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
(3) Make sure that the shutoff valves are in the open position.
(4) Examine the water heater for leaks.
NOTE: Leaks are not permitted.
Subtask 38-12-16-410-051-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Close the lavatory door.
Subtask 38-12-16-862-052-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Close the lavatory door.