W DOC AIRBUS | AMM A320F

Installation of the Avionics Ventilation Duct Temperature Sensors

TASK 21-26-12-400-001-B
Installation of the Avionics Ventilation Duct Temperature Sensors

FIN: 26HQ ** ON A/C NOT FOR ALL
FIN: 32HQ ** ON A/C NOT FOR ALL
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) - ADJUSTABLE
 B. Consumable Materials
REFERENCE
DESIGNATION
No specific
lockwire 0.020 in. (0.51 mm) dia
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
824
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
3
O-RINGS
AIPC 21-26-01-10-030
3
O-RINGS
AIPC 21-26-81-10-040
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 21-26-00-710-001-A
Operational Check of the Avionics Equipment Ventilation-System via MCDU
TASK 21-26-00-710-001-A-01
Operational Check of the Avionics Equipment Ventilation (without the CFDS)
TASK 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A
De-energize the Ground Service Network Supplied from the External Power
TASK 52-41-00-410-002-A
Close the Avionics Compartment Doors after Access
F Duct Temperature Sensors
3. Job Set-up
CAUTION: USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
Subtask 21-26-12-860-051-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
Subtask 21-26-12-010-053-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the access door 824.
   (2) Make sure that the access door 824 is open.
Subtask 21-26-12-865-054-A ** ON A/C NOT FOR ALL
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/AVNCS VENT/CTL6HQD06
49VUAIR COND/AVNCS VENT/CTL5HQD05
122VUAIR COND/AVNCS/VENT/MONG3HQY17
123VUAVNCS VENT/BLOWER/FAN1HQAD10
123VUAVNCS VENT/EXTC/FAN2HQAE02
4. Procedure
Subtask 21-26-12-420-051-A ** ON A/C NOT FOR ALL
A. Installation of the Duct Temperature Sensors
F Duct Temperature Sensors ** ON A/C NOT FOR ALL
   (1) Put the new AIPC 21-26-01-10-030 O-RINGS (3) or AIPC 21-26-81-10-040 O-RINGS (3) in the groove of the sensors (2).
   (2) Install the sensors (2) and tighten them.
   (3) Safety the sensors with lockwire 0.020 in. (0.51 mm) dia.
   (4) Remove the CAP-BLANKING from each electrical connector and receptacle.
   (5) Make sure that all the electrical connections are clean and in the correct condition.
   (6) Connect the electrical connectors (1).
Subtask 21-26-12-865-055-A ** ON A/C NOT FOR ALL
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/AVNCS VENT/CTL6HQD06
49VUAIR COND/AVNCS VENT/CTL5HQD05
122VUAIR COND/AVNCS/VENT/MONG3HQY17
123VUAVNCS VENT/BLOWER/FAN1HQAD10
123VUAVNCS VENT/EXTC/FAN2HQAE02
Subtask 21-26-12-710-051-A ** ON A/C NOT FOR ALL
C. Do an operational test of the avionics equipment ventilation (Ref. AMM TASK 21-26-00-710-001).
5. Close-up
Subtask 21-26-12-410-051-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) Close the access door 824 (Ref. AMM TASK 52-41-00-410-002).
   (3) Remove the access platform(s).
Subtask 21-26-12-862-052-A ** ON A/C NOT FOR ALL
B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.9 from 2019] 2026.04.02 06:11:02 UTC
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