DOC AIRBUS | AMM A320FDeactivation of Transformer Rectifier TR1 (FAA only)
TASK 24-30-00-040-004-A
Deactivation of Transformer Rectifier TR1 (FAA only)
1. Reason for the Job
MMEL 24-30-01
TRANSFORMER/RECTIFIER UNITS (TR) (FAA ONLY)
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 24-30-00-860-060-A
Subtask 24-30-00-040-055-A
Subtask 24-30-00-860-061-A
[Rev.10 from 2021]
2026.03.31 23:23:08 UTC
Deactivation of Transformer Rectifier TR1 (FAA only)
1. Reason for the Job
MMEL 24-30-01
TRANSFORMER/RECTIFIER UNITS (TR) (FAA ONLY)
NOTE: This task is applicable to aircraft that the FAA controls.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| REFERENCE | DESIGNATION |
|---|---|
| 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 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
Subtask 24-30-00-860-060-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
Subtask 24-30-00-865-055-A (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
B. Make sure that this(these) circuit breaker(s) is(are) closed:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 125VU | TR1/CNTOR/SPLY | 4PU1 | CF01 |
Subtask 24-30-00-040-055-A
A. Deactivation of TR1
(1) Open, safety and tag this(these) circuit breaker(s):
(4) On the battery voltage indicator, do a check of the voltages of BAT1 and BAT2. The two voltages must be equal to or more than 25.5V.
5. Close-up(1) Open, safety and tag this(these) circuit breaker(s):
- [4PU1] .
- Ignore the indications related to TR1.
- Do a check of the voltages of TR2 and the Essential (ESS) TR. The two voltages must be equal to or more than 27V.
(4) On the battery voltage indicator, do a check of the voltages of BAT1 and BAT2. The two voltages must be equal to or more than 25.5V.
Subtask 24-30-00-860-061-A
A. Aircraft Maintenance Configuration
(1) On the ELEC panel 35VU, push BAT 1 and BAT 2 pushbutton switches (on these pushbutton switches, the OFF legend goes off).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) Make an entry in the logbook.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.
(1) On the ELEC panel 35VU, push BAT 1 and BAT 2 pushbutton switches (on these pushbutton switches, the OFF legend goes off).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) Make an entry in the logbook.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.