DOC AIRBUS | AMM A320FInstallation of the Essential Transformers
TASK 33-14-51-400-001-A
Installation of the Essential Transformers
1. Reason for the Job
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 33-14-51-865-051-A
Subtask 33-14-51-420-050-A
Subtask 33-14-51-410-051-A
[Rev.10 from 2021]
2026.04.01 00:53:08 UTC
Installation of the Essential Transformers
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 211 | COCKPIT |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 33-14-00-710-001-A | Operational Check of the Light Test System |
Essential TransformerSubtask 33-14-51-865-051-A
A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 33-14-51-010-052-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | LIGHTING/TST/BOARD/SPLY | 30LP | X06 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 31LP (XFMRESS) | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H01 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 35LP (XFMRESS) | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H01 |
| ** ON A/C ALL | |||
| 122VU | LIGHTING/ANN LT SPLY/XFMR/STAT INV | 28LP | X03 |
B. Get Access
(1) Make sure that the ceiling panel 211HC is removed.
4. Procedure(1) Make sure that the ceiling panel 211HC is removed.
Subtask 33-14-51-420-050-A
A. Installation of the Essential Transformer
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the CAP - BLANKING from the electrical connector.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Install the new transformer (1).
(6) Tighten the four screws (3) and the washers (2) that attach the transformer (1) to the structure.
(7) Connect the movable connector (4) to the transformer (1).
Subtask 33-14-51-865-053-A (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the CAP - BLANKING from the electrical connector.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Install the new transformer (1).
(6) Tighten the four screws (3) and the washers (2) that attach the transformer (1) to the structure.
(7) Connect the movable connector (4) to the transformer (1).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 33-14-51-710-050-A 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | LIGHTING/TST/BOARD/SPLY | 30LP | X06 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 31LP (XFMRESS) | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H01 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 35LP (XFMRESS) | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | LIGHTING/XFMR/115V.5V/ESS BUS | 29LP | H01 |
| ** ON A/C ALL | |||
| 122VU | LIGHTING/ANN LT SPLY/XFMR/STAT INV | 28LP | X03 |
Subtask 33-14-51-410-051-A
A. Close Access
(1) Install the ceiling panel 211HC with an ALLEN wrench.
(2) Make sure that the work area is clean and clear of tools and other items.
(1) Install the ceiling panel 211HC with an ALLEN wrench.
(2) Make sure that the work area is clean and clear of tools and other items.