(2)
Energize the ECAM system (Ref. TASK 31-60-00-860-001)
(3)
Do the operational test of the annunciator light test system (Ref. TASK 33-14-00-710-001).
Subtask 26-13-00-865-050
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/FIRE AND OVHT/DET/LOOP B 2WG L44 121VU APU/FIRE AND OVHT/DET/LOOP A 1WG L43 121VU APU/FIRE/EXTIG/SQUIB/B 2WF L39 121VU APU/FIRE/EXTIG/SQUIB/A 1WF L38 121VU APU/FIRE/LP VALVE/NORM 4WF M42 121VU APU/FIRE/LP VALVE/STBY 3WF M41
4. Procedure
_________
Subtask 26-13-00-865-051
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU APU/AUTO/EXTIG/GND/TEST 30WF L40
Subtask 26-13-00-710-050
B. Do this test:
-Make sure that the circuit breaker APU AUTO EXTIG GND TEST 30WF (L40) on the panel 121VU is open.
NOTE : This is necessary to prevent an unwanted automatic fire
____ extinguisher discharge during the test (see TFU REF 26.22.00.007).
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1.
On the circuit breaker panel 121VU: - open the circuit breaker APU
AUTO EXTIG GND TEST 30WF (L40).
2.
On the panel 25VU: On the panel 25VU:
-push the APU MASTER SW to ON. - the blue ON light in the APU MASTER SW comes on.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
3. On the ENG/APU FIRE panel (1WD) on 20VU:
-push and hold the APU FIRE/TEST pushbutton switch.
-release the APU FIRE/TEST
pushbutton switch.
4. On the panel 25VU:
-push to release the APU MASTER SW to OFF.
5. On the circuit breaker panel 121VU:
-close the circuit breaker APU AUTO EXTIG GND TEST 30WF (L40).
Subtask 26-13-00-865-052On the ENG/APU FIRE panel (1WD) on20VU:- on the APU FIRE pushbutton switch the
APU FIRE light comes on. - on the AGENT pushbutton switch the SQUIB and DISCH lights comes on.
On the glareshield panels 130VU and 131VU:
-
the MASTER WARN lights flash.
-
the continuous repetitive chime is heard.
On the ECAM upper display unit:
-
APU FIRE
-
APU FIRE P/B....PUSH
-MASTER SW....OFF come on.
All warnings given above are cancelled.
On the panel 25VU:
-the blue ON light in the APU MASTERSW goes off.
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU APU/AUTO/EXTIG/GND/TEST 30WF L40
5. Close-up
________
Subtask 26-13-00-860-051
A. Put the aircraft back to its initial configuration.
(1)
On the ECAM control panel set the Control/Brightness knobs to OFF.
(2)
De-energize the annunciator light test and dimming system (Ref. TASK 33-14-00-710-001).
(3)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
DETECTOR - APU FIRE (LOOP A AND B) (21WG,22WG) - REMOVAL/INSTALLATION
_____________________________________________________________________
TASK 26-13-15-000-001 Removal of the Sensing Elements 21WG and 22WG
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
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