(2)
Install the washers (3), the screws (2) and tighten them.
(3)
Remove the blanking caps from the electrical connectors (5) and (6).
(4)
Connect the electrical connectors (5) and (6) to the fire detection unit (1).
Subtask 26-13-34-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WG, 2WG
Subtask 26-13-34-860-051
C. Do the EIS start procedure (Ref. TASK 31-60-00-860-001). Subtask 26-13-34-710-050
D. On the upper ECAM DU, make sure that the FIRE APU DET FAULT message has gone out of view.
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Subtask 26-13-34-710-051
E. Operational Test of the Engine Fire and Overheat Detection with the CFDS
(1)
On one Multipurpose Control and Display Unit (MCDU), get the SYSTEM REPORT/TEST/FIRE PROT page (Ref. TASK 31-32-00-860-005).
(2)
Do this test:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the MCDU: On the MCDU:
-
push the line key adjacent to - the FDU APU page comes into view. the FDU APU indication.
-
push the line key adjacent to On the FDU APU page:
the TEST indication. - the TEST WAIT message comes into view for 60 seconds then goes out of view, and these messages come into view (P/N given for example only):
TEST OK P/N 7304 01 02 END OF TEST
NOTE : Ignore other indications.
____
R (3) Do the operational test of the APU fire and overheat detection system R (Ref. TASK 26-13-00-710-001).
5. Close-up
________
Subtask 26-13-34-860-052
A. Do the EIS stop procedure (Ref. TASK 31-60-00-860-002).
Subtask 26-13-34-410-050
B. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Remove the warning notice(s).
(3)
Close the access door 824 (Ref. TASK 52-41-00-410-002).
(4)
Remove the access platform(s).
AVIONICS COMPARTMENT SMOKE DETECTION - DESCRIPTION AND OPERATION
________________________________________________________________
1. General
_______
A. Definition
There are two types of smoke detection:
-
the direct detection by the crew,
-
the secondary detection by a smoke detector, which is a help.
B. Functions
The avionics-compartment smoke-detection system confirms that there is smoke in the avionics compartment. The smoke detection system includes one smoke detector installed on the
air extraction duct.
The smoke detector triggers the smoke warnings to the cockpit when the
alarm threshold is reached.
When there is smoke, pneumatic and electrical procedures are started.
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2. Component Location__________________
A. Smoke Detector
(Ref. Fig. 001, 002)
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF. -------------------------------------------------------------------------------1WA DET-SMOKE, AVNCS COMPT 128 824AR 26-15-15
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Smoke Detector - Location
Figure 001
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1 1 Feb 01/98
1 1
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Avionics-Compartment Ventilation System - Smoke Detector Location
Figure 002
3. System Description
__________________
(Ref. Fig. 003)
When the smoke concentration is above the alarm threshold, the smoke
detector triggers the smoke warnings in the cockpit:
- on the EMER ELEC PWR section of the panel 21VU,
- on the VENTILATION section of the OVERHEAD CTL & IND panel 22VU,
-
the MASTER CAUT light comes on,
-
the warning message is shown on the lower ECAM display unit.
The aural warning sounds.
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