W DOC AIRBUS | AMM A320F

Removal of the Water Injector

TASK 21-52-42-000-001-A
Removal of the Water Injector

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 for the water injector 20HM and 21HM is the same.
FIN: 20HM
FIN: 21HM
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
PLUG - BLANKING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [20HM] (P1 WATER INJECTOR)
191KB
FOR [21HM] (P2 WATER INJECTOR)
192KB
 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 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
F Water Injector
3. Job Set-up
Subtask 21-52-42-861-050-A
A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 21-52-42-865-050-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 20HM (P1 WATER INJECTOR)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 21HM (P2 WATER INJECTOR)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-42-941-050-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 ground connector put a warning notice in position to tell persons not to supply the ground air.
Subtask 21-52-42-010-050-A
D. Get Access
   (1) Remove the access panel/s (Ref. AMM TASK 53-35-13-000-002).
     (a) FOR [20HM] (P1 WATER INJECTOR)
     (b) FOR [21HM] (P2 WATER INJECTOR)
4. Procedure
Subtask 21-52-42-020-050-A
A. Removal of the Water Injector
   (1) Disconnect the water hose (3).
   (2) Put the PLUG-BLANKING in each disconnected line end.
   (3) Remove the bolts (4), the washers (5), the water injector (2) and the washer (6) from the inlet duct (1).
[Rev.10 from 2021] 2026.04.02 06:47:31 UTC
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