On the upper ECAM display unit:

 -
the AVNCS SYS FAULT message comes into view after approximately 10 seconds.

On the VENTILATION section of theoverhead control and indicating panel22VU:

 -
the FAULT legend of the EXTRACT pushbutton switch goes off after 10 seconds (the FAULT legend of the BLOWER pushbutton switch also goes off).

 On the upper ECAM display unit:

 -
the AVNCS SYS FAULT message goes out of view after 10 seconds.

 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
 1EFF : ALL 1 21-26-11Page 503 1 1 May 01/04R 1 1 1CES 1

 SENSOR - DUCT TEMPERATURE (26HQ) - REMOVAL/INSTALLATION
_______________________________________________________ TASK 21-26-12-000-001 Removal of the Avionics Ventilation Duct Temperature Sensor (26HQ)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)
 No specific access platform 1.6 m (5 ft. 3 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001  Energize the Ground Service Network from the External Power 21-26-12-991-001 Fig. 401
 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 21-26-12-861-050
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 1EFF : ALL 1 21-26-12Page 401 1 1 May 01/04R 1 1 1CES 1

 Subtask 21-26-12-865-050
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06 49VU AIR COND/AVNCS VENT/CTL 5HQ D05 122VU AIR COND/AVNCS/VENT/MONG 3HQ Y17

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 123VU AVNCS VENT/EXTC/FAN 2HQ AE02 **ON A/C ALL
 123VU AVNCS VENT/BLOWER/FAN 1HQ AD10 **ON A/C 301-399,
 123VU AVNCS VENT/EXTC/FAN 2HQ AC04 **ON A/C ALL
 Subtask 21-26-12-010-050
 C. Get Access
 (1)
 Put the access platform in position at the access door 824.

 (2)
 Open the access door 824.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 21-26-12-991-001) Subtask 21-26-12-020-051
 A. Removal of the Duct Temperature Sensor
 (1)
 Disconnect the electrical connector (1).

 (2)
 Put blanking caps on the disconnected electrical connectors.

 (3)
 Cut and discard the lockwire.

 (4)
 Remove the sensor (2) and discard the O-ring (3).

 1EFF : ALL 1 21-26-12Page 403 1 1 May 01/04R 1 1 1CES 1

 Duct Temperature Sensor Figure 401/TASK 21-26-12-991-001
 1EFF : 1 1R 1CES  ALL  1 11 1 21-26-12 Page 404 May 01/04

 TASK 21-26-12-400-001
 Installation of the Avionics Ventilation Duct Temperature Sensor (26HQ)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific access platform 1.6 m (5 ft. 3 in.)
 B. Consumable Materials
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
　
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