NOTE : If the test is correct,
____ the firing system will operate correctly. The test system is defective.
On the multimeter
-0 VDC is shown.
On the APU FIRE panel 20VU:
-the SQUIB legend in the APU AGENTpushbutton switch comes on.
On the multimeter
-28 VDC is shown.
On the multimeter
-
0 VDC is shown.
On the multimeter
-
0 VDC is shown.
On the multimeter
-28 VDC is shown.
On the multimeter
-0 VDC is shown.
On the APU FIRE panel 20VU:
-the SQUIB legend in the APU AGENTpushbutton switch goes off.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
NOTE : If the test is not correct____
(no voltage), the firing
system is defective and do
the applicable trouble
shooting procedure.
R 8. On the APU FIRE panel 20VU:
R - push and hold the Test
R pushbutton switch.
R
R
R
R 9. On the APU FIRE panel 20VU:
R - release Test pushbutton switch.
R
R
R
R
R
5. Close-up________
Subtask 26-22-00-865-078
The squib and discharge test starts. On the APU FIRE panel 20VU:
-
the SQUIB legend in the AGENT pushbutton switch comes on.
-
the DISCH legend in the AGENT pushbutton switch comes on.
On the APU FIRE panel 20VU:
-
the SQUIB legend in the AGENT pushbutton switch goes off.
-
the DISCH legend in the AGENT pushbutton switch goes off.
-
the squib and discharge test stops.
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/FIRE/EXTIG/SQUIB/B 2WF L39 121VU APU/FIRE/EXTIG/SQUIB/A 1WF L38
Subtask 26-22-00-410-061
B. Put the aircraft back to its initial configuration.
(1)
Remove the SHUNT PLUG - FIRE EXTINGUISHER CARTRIDGE (2-100831-1) from the cartridge 12WF.
(2)
Make sure that the electrical connectors are clean and in the correct condition.
(3)
Connect the connector 12WF-A to the cartridge 12WF.
(4)
Safety the connector 12WF-A with corrosion-resistant steel lockwire
0.8 mm (0.032 in.) dia.
(5)
Disconnect the 600 ohm boomset from the service interphone jack.
(6)
Disconnect the 600 ohm headset from the CAPT jack panel.
(7)
Make sure that the work area is clean and clear of tool(s) and other items.
(8)
Close the access door 314AR.
(9)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(10)
Remove the access platform(s).
(11)
Remove the warning notice from the panel 25VU.
(12)
Put the warning notice in the cockpit to tell the flight crew that the APU FIRE TEST is deactivated.
(13) Make an entry in the aircraft technical logbook. Subtask 26-22-00-865-076
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WF, 2WF.
Subtask 26-22-00-860-061
D. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
1EFF : ALL 1 26-22-00Page 418 1 1 May 01/05R 1 1 1CES 1
TASK 26-22-00-040-007
Bottle Pressure Switch Check
1. Reason for the Job
__________________
Refer to the MMEL TASK: 26-22-05
APU Fire Extinguishing
Fire Extinguisher Overpressure Indication
(Red Disc)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
R No specific 3/32in./Allen key No specific 600 ohm boomset No specific 600 ohm headset No specific access platform 2.5 m (8 ft. 2 in.)
B. Referenced Information
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM FIRE PROTECTION 防火2(55)
