W DOC AIRBUS | AMM A320F

Removal of the Cabin Recirculation Fans

TASK 21-21-51-000-001-A
Removal of the Cabin Recirculation Fans

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 cabin recirculation fans 15HG and 14HG.
FIN: 14HG
FIN: 15HG
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 2M (6 FT)
No specific
AR
CAP - BLANKING
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
825
 C. Referenced Information
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 25-54-12-000-001-A
Removal of the Forward Cargo-Compartment Partition
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
F Cabin Recirculation Fan 15HG (14HG)
FOR [14HG] (RECIRC FAN 2)
TASK 06-41-53-00
FUSELAGE-DESCRIPTION AND OPERATION
FOR [15HG] (RECIRC FAN 1)
TASK 06-41-53-00
FUSELAGE-DESCRIPTION AND OPERATION
3. Job Set-up
Subtask 21-21-51-861-050-A
A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 21-21-51-865-050-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
FOR FIN: 15HG (RECIRC FAN 1)
122VUAIR COND/RECIRC FAN/L/CTL2HGX20
122VUAIR COND/RECIRC FAN/L/SPLY1HGX18
FOR FIN: 14HG (RECIRC FAN 2)
122VUAIR COND/RECIRC FAN/R/CTL11HGW20
122VUAIR COND/RECIRC FAN/R/SPLY3HGW18
Subtask 21-21-51-941-050-A
C. Safety Precautions
   (1) On the panel 30VU:
     (a) Make sure that:
  • The APU BLEED pushbutton switch is in the off position (the ON legend is off) and
  • the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
     (b) Put a warning notice in position to tell persons not to operate these pushbutton switches.
   (2) On the HP and the LP ground connector put a warning notice in position to tell persons not to supply the ground air.
Subtask 21-21-51-010-050-A
D. Get Access
   (1) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
   (2) Put the ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
   (3) Remove the access panel at partition FR34 (Ref. AMM TASK 25-54-12-000-001).
     (a) FOR [15HG] (RECIRC FAN 1)
     (b) FOR [14HG] (RECIRC FAN 2)
4. Procedure
Subtask 21-21-51-020-051-A
A. Removal of the Cabin Recirculation Fan
   (1) Disconnect the electrical connector (14).
   (2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (3) Remove the bolt (8), the washers (9) and (11), the nut (12) and disconnect the bonding strap (10).
   (4) Remove the clamp (2) and disconnect the sleeve (1).
   (5) Remove the clamp (13).
   (6) Hold the cabin recirculation fan (15) and remove the nuts (6), the washers (5), the bolts (3) and the washers (4).
   (7) Carefully remove the cabin recirculation fan (15).
   (8) Put PLUG - BLANKING on the open ends of the cabin recirculation fan (15), the sleeve (1) and on the check valve (7).
[Rev.10 from 2021] 2026.04.01 04:53:06 UTC
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