DOC AIRBUS | AMM A320FDo a Charging Cycle of the Battery Connected with the Battery Charge Limiter (BCL) or Replacement of the Battery
TASK 24-30-00-040-001-A
Do a Charging Cycle of the Battery Connected with the Battery Charge Limiter (BCL) or Replacement of the Battery
1. Reason for the Job
MMEL 24-38-02A
BATTERY CHARGER LIMITER (BCL)
This procedure is to make sure that the related battery of the serviceable BCL is fully charged before you interchange the two BCL and charge the other battery with the serviceable BCL.
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 24-30-00-010-053-A
Subtask 24-30-00-040-050-B
Subtask 24-30-00-410-051-A
[Rev.10 from 2021]
2026.04.01 05:50:21 UTC
Do a Charging Cycle of the Battery Connected with the Battery Charge Limiter (BCL) or Replacement of the Battery
1. Reason for the Job
MMEL 24-38-02A
BATTERY CHARGER LIMITER (BCL)
This procedure is to make sure that the related battery of the serviceable BCL is fully charged before you interchange the two BCL and charge the other battery with the serviceable BCL.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 822 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-38-34-000-001-A | Removal of the Battery Charge Limiter (BCL) |
| TASK 24-38-34-400-001-A | Installation of the Battery Charge Limiter (BCL) |
| TASK 24-38-51-000-001-A | Removal of the Battery |
| TASK 24-38-51-400-001-A | Installation of the Battery |
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| 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 24-30-00-010-053-A
A. Get access to the avionics compartment.
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE at the avionics compartment door 822.
(2) Open the access door 822.
(3) Open the access panel of the BATTERY power center 105VU.
Subtask 24-30-00-865-051-A (1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE at the avionics compartment door 822.
(2) Open the access door 822.
(3) Open the access panel of the BATTERY power center 105VU.
B. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 24-30-00-860-052-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 105VU | ELEC/HOT BUS/702PP SPLY | 5PB2 | D02 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 5PB1 | D01 |
| 105VU | ELEC/BAT REF/BCL2 | 9PB2 | F02 |
| 105VU | ELEC/BAT REF/BCL1 | 9PB1 | F01 |
| 105VU | ELEC/BAT BUS/REF/BCL1 | 8PB1 | G01 |
| 105VU | ELEC/BAT BUS/REF/BCL2 | 8PB2 | J02 |
| 125VU | BAT BUS/301PP/SPLY | 11PB | CC01 |
C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002) and/or (Ref. AMM TASK 24-41-00-861-002).
(Ref. AMM TASK 31-60-00-860-001).
4. Procedure(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002) and/or (Ref. AMM TASK 24-41-00-861-002).
NOTE: It is not necessary to use the APU.
(2) In the cockpit, on ELEC control panel 35VU: - Make sure that the BAT1 and BAT2 pushbutton switches are released (the OFF legends are on).
- Make sure that the APU MASTER SW pushbutton switch is released (the ON legend is off).
(Ref. AMM TASK 31-60-00-860-001).
Subtask 24-30-00-040-050-B
A. Charging Cycle of Batteries 1 and 2 with the serviceable BCL 1(2).
(1) If the BAT 1(2) voltmeter of ELEC panel 35VU related to unserviceable BCL 1(2) shows a voltage of:
(e) Wait until the battery contactor opens.
1 The green line between the BAT 1(2) indication and the DC BAT busbar indication:
(g) Release the BAT 1(2) pushbutton switch (the OFF legend comes on).
(h) Interchange BCL 1 and BCL 2 (Ref. AMM TASK 24-38-34-000-001) and (Ref. AMM TASK 24-38-34-400-001).
(i) Start a charging cycle of the battery which was connected to the unserviceable BCL 1(2) during the previous flight.
1 On ELEC control panel 35VU, push the related BAT 1(2) pushbutton switch (OFF and FAULT legends off) to start the charging cycle of the battery 1(2) with the serviceable BCL 1(2).
a If the battery contactor 1(2) is not closed (BCL 1(2) FAULT ECAM alert message comes into view on the upper ECAM DU):
Subtask 24-30-00-040-051-A (1) If the BAT 1(2) voltmeter of ELEC panel 35VU related to unserviceable BCL 1(2) shows a voltage of:
- Less than 21VDC, do the alternative procedure given in Para. 4. B. or Para. 4. C.
- More than 26VDC and battery discharge current is equal to or less than 1A, do steps from 4. A. (1) (h).
- More than or equal to 21VDC, continue the maintenance procedure that follows:
- Push the ELEC key to get the ELEC system page.
- Push the related BAT 1(2) pushbutton switch (OFF and FAULT legends off) related to serviceable BCL to start the charging cycle of the battery 1(2),
- The green line between the BAT 1(2) indication and the DC BAT busbar indication comes into view. The arrow points to the BAT 1(2) indication.
- The related parameter indications (voltage and current) come into view green.
(e) Wait until the battery contactor opens.
1 The green line between the BAT 1(2) indication and the DC BAT busbar indication:
- Goes out of view if the battery is correctly charged
- Stays in view if a battery charging is necessary.
NOTE: The time for the battery to charge can be of thirty minutes.
(f) On the lower ECAM DU, on the ELEC page, make sure that the battery voltage is more than 26VDC and the battery discharge current is equal to or less than 1A. (g) Release the BAT 1(2) pushbutton switch (the OFF legend comes on).
(h) Interchange BCL 1 and BCL 2 (Ref. AMM TASK 24-38-34-000-001) and (Ref. AMM TASK 24-38-34-400-001).
(i) Start a charging cycle of the battery which was connected to the unserviceable BCL 1(2) during the previous flight.
1 On ELEC control panel 35VU, push the related BAT 1(2) pushbutton switch (OFF and FAULT legends off) to start the charging cycle of the battery 1(2) with the serviceable BCL 1(2).
a If the battery contactor 1(2) is not closed (BCL 1(2) FAULT ECAM alert message comes into view on the upper ECAM DU):
- Release the BAT1(2) pushbutton switch (the OFF legend comes on) of the battery that was connected to unserviceable BCL 1(2) during the last flight.
- Interchange BCL 1 and BCL 2, (Ref. AMM TASK 24-38-34-000-001) and (Ref. AMM TASK 24-38-34-400-001).
- Do the alternative procedure in Para. 4.B.
- Do steps A. (1) (c) thru A. (1) (g).
B. Alternative Procedure to Charge the Battery in the Workshop
(1) Remove battery 1(2) related to unserviceable BCL 1(2) (Ref. AMM TASK 24-38-51-000-001).
(2) Send battery 1(2) to the overhaul workshop to charge it.
(3) Install battery 1(2) (Ref. AMM TASK 24-38-51-400-001).
(4) Release the BAT 1(2) pushbutton switch (OFF legend on) related to the unserviceable BCL 1(2).
Subtask 24-30-00-040-053-A (1) Remove battery 1(2) related to unserviceable BCL 1(2) (Ref. AMM TASK 24-38-51-000-001).
(2) Send battery 1(2) to the overhaul workshop to charge it.
(3) Install battery 1(2) (Ref. AMM TASK 24-38-51-400-001).
(4) Release the BAT 1(2) pushbutton switch (OFF legend on) related to the unserviceable BCL 1(2).
C. Alternative Procedure to Replace the Battery
(1) If the procedures in step A. and B. are not applicable:
(a) Replace the battery related to the unserviceable BCL 1(2) with a fully-charged serviceable battery (Ref. AMM TASK 24-38-51-000-001) and (Ref. AMM TASK 24-38-51-400-001).
(b) Release the BAT 1(2) pushbutton switch (OFF legend on) related to the unserviceable BCL 1(2).
5. Close-up(1) If the procedures in step A. and B. are not applicable:
(a) Replace the battery related to the unserviceable BCL 1(2) with a fully-charged serviceable battery (Ref. AMM TASK 24-38-51-000-001) and (Ref. AMM TASK 24-38-51-400-001).
(b) Release the BAT 1(2) pushbutton switch (OFF legend on) related to the unserviceable BCL 1(2).
Subtask 24-30-00-410-051-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel of the battery power-center 105VU.
(3) Close access door 822.
(4) Remove the access platform(s).
Subtask 24-30-00-860-053-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel of the battery power-center 105VU.
(3) Close access door 822.
(4) Remove the access platform(s).
B. Put the aircraft back to its initial configuration.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) Put a warning notice in position in the cockpit to tell the crew that one BCL does not operate.
(3) Make an entry in the logbook.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) Put a warning notice in position in the cockpit to tell the crew that one BCL does not operate.
(3) Make an entry in the logbook.
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).