DOC AIRBUS | AMM A320FInstallation of the CSAS Heat Exchanger
TASK 21-58-41-400-001-A
Installation of the CSAS Heat Exchanger
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. Expendable Parts
D. Referenced Information
3. Procedure
Subtask 21-58-41-420-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:48:47 UTC
Installation of the CSAS Heat Exchanger
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
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 191 | AIR CONDITIONING COMPT AND FAIRINGS |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 18 | PREFORMED PACKING | AIPC 21-58-54-01-020 |
| 17 | SEALING ELEMENT | AIPC 21-58-54-01-060 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 20-28-00-912-803-A | Bonding Surface Preparation |
| TASK 21-52-24-400-001-A | Installation of the Heat Exchanger Unit (into the Aircraft) |
| TASK 21-52-24-400-001-A-01 | Installation of the Heat Exchanger Unit (Into the Air Conditioning Pack) |
| TASK 21-52-41-400-001-A | Installation of the Air Conditioning Pack |
Conditioned Service Air System (CSAS) Heat ExchangerSubtask 21-58-41-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Conditioned Service Air System (CSAS) Heat Exchanger (5103HM)
(1) Install the CSAS heat exchanger (19) as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Clean the component interfaces and the adjacent area.
(d) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(e) Put the new AIPC 21-58-54-01-060 SEALING ELEMENT (17) and the new AIPC 21-58-54-01-020 PREFORMED PACKING (18) in position on the CSAS heat exchanger (19).
(f) Put the CSAS heat exchanger (19) in position and install the washers (12) and the screws (13).
(g) Install the washers (15), the screws (14) and the locking collars (16).
(h) TORQUE the screws (13) and (14) to between 0.27 and 0.23 m.daN (23.89 and 20.35 lbf.in )
.
(2) If removed, install the plenum (1) as follows:
(a) Put the plenum (1) and the gasket (10) in position and install the screws (4), the washers (3) and the nuts (2).
(b) TORQUE the screws (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ).
(c) Install the screws (6), the washers (3) and the nuts (2).
(d) TORQUE the screws (6) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ).
(e) Put the bonding straps (7), (8) and (11) in position and install the screws (9), the washers (3) and the nuts (2).
(f) Tighten the screws (9).
(g) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(3) Install the air conditioning pack (10HM) (Ref. AMM TASK 21-52-41-400-001) or install the heat exchanger unit (10HM4) (Ref. AMM TASK 21-52-24-400-001).
(1) Install the CSAS heat exchanger (19) as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Clean the component interfaces and the adjacent area.
(d) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(e) Put the new AIPC 21-58-54-01-060 SEALING ELEMENT (17) and the new AIPC 21-58-54-01-020 PREFORMED PACKING (18) in position on the CSAS heat exchanger (19).
(f) Put the CSAS heat exchanger (19) in position and install the washers (12) and the screws (13).
(g) Install the washers (15), the screws (14) and the locking collars (16).
(h) TORQUE the screws (13) and (14) to between 0.27 and 0.23 m.daN (23.89 and 20.35 lbf.in )
. (2) If removed, install the plenum (1) as follows:
(a) Put the plenum (1) and the gasket (10) in position and install the screws (4), the washers (3) and the nuts (2).
(b) TORQUE the screws (4) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
. (c) Install the screws (6), the washers (3) and the nuts (2).
(d) TORQUE the screws (6) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
. (e) Put the bonding straps (7), (8) and (11) in position and install the screws (9), the washers (3) and the nuts (2).
(f) Tighten the screws (9).
(g) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(3) Install the air conditioning pack (10HM) (Ref. AMM TASK 21-52-41-400-001) or install the heat exchanger unit (10HM4) (Ref. AMM TASK 21-52-24-400-001).