-
the APU SHUT OFF push switch 1KL (guarded red) on panel 108VU, forward of the nose landing-gear bay is operated,
-
the fire detection system operates (on the ground only).
Operation of any of these systems causes the FIRE EMERG STOP relays 5WF and 6WF to energize. The relay 5WF transmits a signal to the ECB 59KD thus the APU fuel LP valve 14QM closes and the APU fuel-feed pump 4QC stops.
The ECB 59KD transmits a signal to the ECAM which shows: APU EMERG SHUTDOWN MASTER SW ................OFF
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
C. Indication A 'closed' and an 'open' position microswitch, which are part of the actuator, transmit position signals to the SDAC (Ref. 31-54-00). The SDAC transmits the signals to the Electronic Centralized Aircraft Monitoring (ECAM) system. You can see the 'OPEN', 'MOVING' or 'CLOSED' position of the valve on the fuel system page on the ECAM lower display unit (Ref. 31-51-00). You can also see the valve position at the visual positon indicator on the actuator itself.
R 1EFF : ALL 1 28-29-00Page 17 1 1 May 01/05 1 1 1CES 1R **ON A/C 106-149, 303-399, 401-499,
C. Indication A 'closed' and an 'open' position microswitch, which are part of the actuator, transmit position signals to the SDAC (Ref. 31-54-00). The SDAC transmits the signals to the Electronic Centralized Aircraft Monitoring (ECAM) system. The valve position is shown on the fuel system page on the ECAM lower display unit (Ref. 31-51-00).
-
Valve closed: white triangle
-
Valve open: green triangle
-
Valve move or emergency operation: amber triangle You can also see the valve position at the visual positon indicator on the actuator itself.
R 1EFF : 106-149, 303-399, 401-499, 1 28-29-00Page 18 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 28-29-00Page 401 1 1 May 01/05 1 1 1CES 1 C. Referenced Information
APU LP FUEL SHUT OFF - DEACTIVATION/REACTIVATION________________________________________________
TASK 28-29-00-040-002
APU LP VALVE (14QM) - Deactivation
1. Reason for the Job__________________
Refer to the MMEL TASK: 28-29-01 Fuel APU LP Fuel Shut off APU LP Valve
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
RR R R R R R R No specific No specific No specific No specific No specific No specific No specific No specific B12990 blanking capscircuit breaker(s) safety clip(s) tie-wraps 1 FLASHLIGHT 1 MIRROR - INSPECTION 1 STEPLADDER 2.0 M (6.6 FT) 1 WARNING NOTICE Torque Wrench : range 0.00 to 1.20 m.daN (0.00 to 9.00 lbf.ft) 1 LOCKING COVER
B. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
5 LOCKING COVER 28-29-03 01A-015
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power
32-12-00-010-001 Open the Main Gear Doors for Access
32-12-00-410-001 Close the Main Gear Doors after Access
28-29-00-991-001 Fig. 401
28-29-00-991-002 Fig. 402
3. Job Set-up
__________
Subtask 28-29-00-860-054
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002)
(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is in the off position (the ON and FAULT legends are off).
Subtask 28-29-00-865-058
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/FUEL/LP VALVE/CTL 1QF M40 121VU APU/FUEL/LP VALVE/SPLY 2QF M39
Subtask 28-29-00-010-051
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