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TASK 26-12-34-400-001-A

Installation of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2)FIN 2WD1, 2WD2


TASK 26-12-34-400-001-A
Installation of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2)FIN 2WD1, 2WD2
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 WARNING NOTICE(S)
B. Work Zones and Access Panels
ZONE/ACCESS ZONE DESCRIPTION
126 LATERAL AVIONIC COMPARTMENT
824
C. Referenced Information
REFERENCE DESIGNATION
26-12-00-710-001-A Operational Check of Loop/Squib
26-12-00-710-002-A Operational Test of the Engine Fire and Overheat Detection with the
Centralized Fault Display System (CFDS)
31-60-00-860-001-A EIS Start Procedure
31-60-00-860-002-A EIS Stop Procedure
52-41-00-410-002-A Close the Avionics Compartment Doors after Access
(Ref. Fig. 26-12-34-991-00100-B - Engine Fire-Detection Unit (FDU))
3. Job Set-up
Subtask 26-12-34-860-050-A
A. In the cockpit, on the ENG panel 115VU, make sure that the WARNING NOTICE(S) is in position to tell
persons not to start the engines.
Subtask 26-12-34-865-051-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANEL DESIGNATION FIN LOCATION
FOR FIN 2WD1
49VU ENGINE/1/FIRE DET/LOOP A 7WD1 A06
121VU ENGINE/ENG1/FIRE DET/LOOP B 8WD1 Q38
FOR FIN 2WD2
49VU ENGINE/2/FIRE DET/LOOP B 8WD2 A07
121VU ENGINE/ENG2/FIRE DET/LOOP A 7WD2 Q39
4. Procedure
(Ref. Fig. 26-12-34-991-00100-B - Engine Fire-Detection Unit (FDU))

Subtask 26-12-34-420-050-A
A. Install the Fire Detection Unit (FDU):
(1) Put the Fire Detection Unit (1) on its support (4).
(2) Install the washers (3), the screws (2) and tighten them.
(3) Remove the blanking caps from the electrical connectors (5) and (6).
(4) Make sure that the electrical connectors are clean and in the correct condition.
(5) Connect the electrical connectors (5) and (6) to the Fire Detection Unit (1).
Subtask 26-12-34-865-052-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
FOR FIN 2WD1
49VU ENGINE/1/FIRE DET/LOOP A 7WD1 A06
121VU ENGINE/ENG1/FIRE DET/LOOP B 8WD1 Q38
FOR FIN 2WD2
49VU ENGINE/2/FIRE DET/LOOP B 8WD2 A07
121VU ENGINE/ENG2/FIRE DET/LOOP A 7WD2 Q39
Subtask 26-12-34-860-051-A
C. Do the EIS start procedure (Ref. TASK 31-60-00-860-001-A).
Subtask 26-12-34-710-051-A
D. Do this test:
(1) On the upper ECAM DU, make sure that the FIRE ENG 1(2) DET FAULT message has gone out of
view.
(2) Do an operational test of the engine fire and overheat detection with the Centralized Fault Display
System (CFDS) (Ref. TASK 26-12-00-710-002-A).
(3) Do an operational check of loop/squib (Ref. TASK 26-12-00-710-001-A)
5. Close-up
Aircraft Maintenance Manual XF rev.40 2012
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