Removal of the Air-Conditioning System Controller
TASK 21-61-34-000-002-A
Removal of the Air-Conditioning System Controller
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 21-61-34-861-051-A ** ON A/C NOT FOR ALL Subtask 21-61-34-865-053-A ** ON A/C NOT FOR ALL
Subtask 21-61-34-020-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:11:38 UTC
Removal of the Air-Conditioning System Controller
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 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 121 | AVIONICS COMPARTMENT |
| 122 | AVIONICS COMPARTMENT |
| 811 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
Subtask 21-61-34-861-051-A ** ON A/C NOT FOR ALL Subtask 21-61-34-865-053-A ** ON A/C NOT FOR ALL
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 21-61-34-010-052-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 47HH (CONTAIR COND SYSTEM 1) | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
| FOR FIN: 57HH (CONTAIR COND SYSTEM 2) | |||
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
C. Get Access
(1) Put the ACCESS PLATFORM 1M(3 FT) in position at the access door 811.
(2) Open the access door 811.
4. Procedure(1) Put the ACCESS PLATFORM 1M(3 FT) in position at the access door 811.
(2) Open the access door 811.
Subtask 21-61-34-020-051-A ** ON A/C NOT FOR ALL
A. Removal of the Air-Conditioning System Controller (ACSC)
(1) Loosen the nuts (4).
(2) Lower the nuts (4).
(3) Pull the ACSC (1) on its rack (3) to disconnect the electrical connectors (2).
(4) Remove the ACSC (1) from its rack (3).
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(1) Loosen the nuts (4).
(2) Lower the nuts (4).
(3) Pull the ACSC (1) on its rack (3) to disconnect the electrical connectors (2).
(4) Remove the ACSC (1) from its rack (3).
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Air-Conditioning System Controller