DOC AIRBUS | AMM A320FDeactivation of the Air Conditioning Pack
TASK 21-51-00-040-002-A
Deactivation of the Air Conditioning Pack
MMEL 21-52-01D
AIR CONDITIONING PACK
MMEL 21-52-01E
AIR CONDITIONING PACK
MMEL 21-52-01F
AIR CONDITIONING PACK
2. Job Set-up Information
A. Consumable Materials
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 21-51-00-861-058-A ** ON A/C NOT FOR ALL Subtask 21-51-00-010-058-A ** ON A/C NOT FOR ALL
Subtask 21-51-00-040-052-A ** ON A/C NOT FOR ALL
Subtask 21-51-00-410-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:11:21 UTC
Deactivation of the Air Conditioning Pack
WARNING:
MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
NOTE: The procedure is the same for the two air conditioning packs 10HM (11HM).
ZONE: 190
FIN: 10HM ** ON A/C NOT FOR ALL
FIN: 11HM ** ON A/C NOT FOR ALL
Task Summary
1. Reason for the JobFIN: 10HM ** ON A/C NOT FOR ALL
FIN: 11HM ** ON A/C NOT FOR ALL
Task Summary
| Access | Test | Specific Tools | Mhr | E/T | Nb Men |
|---|---|---|---|---|---|
| YES | NO | NO | 1.0 | 1.0 | 2 |
MMEL 21-52-01D
AIR CONDITIONING PACK
MMEL 21-52-01E
AIR CONDITIONING PACK
MMEL 21-52-01F
AIR CONDITIONING PACK
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.14QFB1) | Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 190 | BELLY FAIR, AIR CONDITIONING & HYD COMPT |
| 191KB, 192KB |
| 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 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
| TASK 53-35-13-400-002-A | Installation of the Quick-Release Access Panels on the Belly Fairing Structure |
Pack Flow-Control Unit - Component LocationSubtask 21-51-00-861-058-A ** ON A/C NOT FOR ALL Subtask 21-51-00-010-058-A ** ON A/C NOT FOR ALL
B. Get Access
(1) Remove the access panel (Ref. AMM TASK 53-35-13-000-002):
(a) For PACK 1
(b) For PACK 2
Subtask 21-51-00-941-057-A ** ON A/C NOT FOR ALL (1) Remove the access panel (Ref. AMM TASK 53-35-13-000-002):
(a) For PACK 1
(b) For PACK 2
C. Safety Precautions
(1) On the panel 30VU:
(a) Make sure that:
(2) On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.
Subtask 21-51-00-860-061-A ** ON A/C NOT FOR ALL (1) On the panel 30VU:
(a) Make sure that:
- The APU BLEED pushbutton switch is in the OFF position (the ON legend is off).
- The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the OFF position (the OFF legends are on).
(2) On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.
D. ECAM Warning Check before Deactivation
(1) On the Upper ECAM E/WD make sure that the display unit does not show these warnings associated with the operative pack:
4. Procedure(1) On the Upper ECAM E/WD make sure that the display unit does not show these warnings associated with the operative pack:
- AIR PACK 1 REGUL FAULT or AIR PACK 2 REGUL FAULT
- AIR COND CTL 1-A FAULT or AIR COND CTL 2-A FAULT
- AIR COND CTL 1-B FAULT or AIR COND CTL 2-B FAULT.
Subtask 21-51-00-040-052-A ** ON A/C NOT FOR ALL
A. Deactivation of the Air Conditioning Pack
(a) In the cockpit, on the AIR COND section of panel 30VU:
(a) In the cockpit, on the AIR COND section of panel 30VU:
(b) Remove the pressure seal cap (3) from the pack flow-control unit (1).
(d) Install the pressure seal cap (3) between the forks of the forked-valve position-indicator lever (5) and on the threaded boss (4).
(e) Safety the pressure seal cap (3) with14QFB1 Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
Subtask 21-51-00-040-053-A ** ON A/C NOT FOR ALL NOTE: This procedure is applicable for the pack flow-control unit with part number 1806A0000-02 or 1806B0000-01 or 1806B0000-02 or 1806D0000-01.
WARNING:
DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
COOL TO PREVENT BURNS.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(1) For PACK 1:(a) In the cockpit, on the AIR COND section of panel 30VU:
- Make sure that the PACK 1 pushbutton switch is released (the OFF legend comes on).
(a) In the cockpit, on the AIR COND section of panel 30VU:
- Make sure that the PACK 2 pushbutton switch is released (the OFF legend comes on).
(b) Remove the pressure seal cap (3) from the pack flow-control unit (1).
NOTE: This will cause the air to flow out of the pack flow-control unit (1) and close the butterfly valve.
(c) Make sure that the forked-valve position-indicator lever (5) is in the CLOSED position. (d) Install the pressure seal cap (3) between the forks of the forked-valve position-indicator lever (5) and on the threaded boss (4).
(e) Safety the pressure seal cap (3) with
B. Deactivation of the Air Conditioning Pack
(a) In the cockpit, on the AIR COND section of panel 30VU:
(a) In the cockpit, on the AIR COND section of panel 30VU:
(b) Remove the locking screw (7), the plate of connecting cable (5) and the O-ring (4) from the pack flow-control unit (1).
(d) Install the locking screw (7) in the hole of the manual override lever (3) and the hole of the hall sensor-plate support (2).
(e) Safety the locking screw (7) with14QFB1 Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
5. Close-upNOTE: This procedure is applicable for the pack flow-control unit with part number 1806D0000-02.
WARNING:
DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY
COOL TO PREVENT BURNS.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(1) For PACK 1:(a) In the cockpit, on the AIR COND section of panel 30VU:
- Make sure that the PACK 1 pushbutton switch is released (the OFF legend comes on).
(a) In the cockpit, on the AIR COND section of panel 30VU:
- Make sure that the PACK 2 pushbutton switch is released (the OFF legend comes on).
(b) Remove the locking screw (7), the plate of connecting cable (5) and the O-ring (4) from the pack flow-control unit (1).
NOTE: This will cause the air to flow out of the pack flow-control unit (1) and close the butterfly valve.
(c) Make sure that the hole of the manual override lever (3) is aligned with the hole of the hall sensor-plate support (2). (d) Install the locking screw (7) in the hole of the manual override lever (3) and the hole of the hall sensor-plate support (2).
(e) Safety the locking screw (7) with
Subtask 21-51-00-410-058-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) Install the access panel (Ref. AMM TASK 53-35-13-400-002):
(a) For PACK 1:
(b) For PACK 2:
(3) Remove the WARNING NOTICE(S).
(4) Put an applicable placard in position in the cockpit (refer to your standard practices and local regulations).
(5) Make an entry in the logbook.
Subtask 21-51-00-862-057-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (Ref. AMM TASK 53-35-13-400-002):
(a) For PACK 1:
(b) For PACK 2:
(3) Remove the WARNING NOTICE(S).
(4) Put an applicable placard in position in the cockpit (refer to your standard practices and local regulations).
(5) Make an entry in the logbook.