DOC AIRBUS | AMM A320FInstallation of the Smoke Detector of Lavatory A
TASK 26-17-15-400-802-A
Installation of the Smoke Detector of Lavatory A
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 26-17-15-860-068-A ** ON A/C NOT FOR ALL
Subtask 26-17-15-420-063-A ** ON A/C NOT FOR ALL
Subtask 26-17-15-410-075-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.03.31 23:44:16 UTC
Installation of the Smoke Detector of Lavatory A
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 220 | FWD CAB UTILITY AREAS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 23-73-00-740-005-B | Interface and Power-Up Test of the Cabin Intercommunication Data System (CIDS) through the CFDS |
| 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 26-10-00-740-801-A | BITE Test of the Smoke Detection Function - System Test |
| TASK 26-17-00-710-001-A | Operational Test of the Lavatory Smoke-Detection System |
| TASK 26-17-00-00 | LAVATORY SMOKE DETECTION - DESCRIPTION AND OPERATION |
Smoke Detector of Lavatory ASubtask 26-17-15-860-068-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) For the location of this component refer to (Ref. AMM D/O 26-17-00-00).
(3) Make sure that the aircraft is in the same configuration as for the removal task.
Subtask 26-17-15-865-103-A ** ON A/C NOT FOR ALL (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) For the location of this component refer to (Ref. AMM D/O 26-17-00-00).
(3) Make sure that the aircraft is in the same configuration as for the removal task.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU B/ESS | 153RH | G03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU B ESS/R | 420RH | G05 |
| 49VU | COM/CIDS/DEU B ESS/L | 419RH | G04 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M08 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM/CIDS/DEU B/BAT | 143RH | N12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM / CIDS / DEU B / NORM FWD | 193RH | M09 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 663RH | M09 |
| 121VU | COM NAV/CIDS/DEU B NORM/R | 620RH | M08 |
| 121VU | COM NAV/CIDS/DEU B NORM/L | 619RH | M07 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | CIDS-DEU B-NORM-AFT | 194RH | C08 |
Subtask 26-17-15-420-063-A ** ON A/C NOT FOR ALL
A. Installation of the Smoke Detector
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Make sure that the seal (8) is serviceable and in the satisfactory condition.
(5) Carefully put the seal (8) together with the smoke detector (7) in its installation position on the air-extraction hood (9).
(6) Align the smoke detector (7) and the seal (8).
(7) Install the screws (10), the washers (5) and the nuts (4).
(8) Remove the CAP-BLANKING from each electrical connector and receptacle.
(9) Make sure that all the electrical connections are clean and in the correct condition.
(10) Connect the electrical connector (6) to the smoke detector (7).
(11) Connect the hose (1) to the air-extraction hood (9) and tighten the clamp (2).
(12) Carefully put the air extraction-hood (9) together with the smoke detector (7) in its installation position in the ceiling panel (3) and install the screws (11).
Subtask 26-17-15-865-104-A ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Make sure that the seal (8) is serviceable and in the satisfactory condition.
(5) Carefully put the seal (8) together with the smoke detector (7) in its installation position on the air-extraction hood (9).
(6) Align the smoke detector (7) and the seal (8).
(7) Install the screws (10), the washers (5) and the nuts (4).
(8) Remove the CAP-BLANKING from each electrical connector and receptacle.
(9) Make sure that all the electrical connections are clean and in the correct condition.
(10) Connect the electrical connector (6) to the smoke detector (7).
(11) Connect the hose (1) to the air-extraction hood (9) and tighten the clamp (2).
(12) Carefully put the air extraction-hood (9) together with the smoke detector (7) in its installation position in the ceiling panel (3) and install the screws (11).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 26-17-15-740-052-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU B/ESS | 153RH | G03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU B ESS/R | 420RH | G05 |
| 49VU | COM/CIDS/DEU B ESS/L | 419RH | G04 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M08 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM/CIDS/DEU B/BAT | 143RH | N12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM / CIDS / DEU B / NORM FWD | 193RH | M09 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 663RH | M09 |
| 121VU | COM NAV/CIDS/DEU B NORM/R | 620RH | M08 |
| 121VU | COM NAV/CIDS/DEU B NORM/L | 619RH | M07 |
| ** ON A/C NOT FOR ALL | |||
| 2001VU | CIDS-DEU B-NORM-AFT | 194RH | C08 |
C. Interface and Power-Up Test of the Cabin Intercommunication Data System (CIDS)
(1) Do the interface and power-up test of the CIDS through the centralized fault display-system (Ref. AMM TASK 23-73-00-740-005).
Subtask 26-17-15-740-053-A ** ON A/C NOT FOR ALL (1) Do the interface and power-up test of the CIDS through the centralized fault display-system (Ref. AMM TASK 23-73-00-740-005).
D. BITE Test of the Smoke Detection Function (SDF)
(1) Do the BITE test of the SDF (system test) (Ref. AMM TASK 26-10-00-740-801).
Subtask 26-17-15-710-062-A ** ON A/C NOT FOR ALL (1) Do the BITE test of the SDF (system test) (Ref. AMM TASK 26-10-00-740-801).
E. Test of the Lavatory Smoke Detector
(1) Do the operational test of the lavatory smoke-detection system (Ref. AMM TASK 26-17-00-710-001).
5. Close-up(1) Do the operational test of the lavatory smoke-detection system (Ref. AMM TASK 26-17-00-710-001).
Subtask 26-17-15-410-075-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) Put the grille (14) and the air filter (15) into the air-extraction hood (9).
(3) Install the air-extraction grille (12) on the air-extraction hood (9) with the screws (13).
(4) Close the door of lavatory A.
Subtask 26-17-15-860-069-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Put the grille (14) and the air filter (15) into the air-extraction hood (9).
(3) Install the air-extraction grille (12) on the air-extraction hood (9) with the screws (13).
(4) Close the door of lavatory A.
B. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) .
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) .