(2)
Put the warning notice in the cockpit to tell the flight crew that the APU AGENT DISCH light is deactivated.
(3)
Make an entry in the aircraft technical logbook.
TASK 26-22-00-040-004- 01
Bottle Pressure Check
1. Reason for the Job
__________________
Refer to the MMEL TASK: 26-22-01
APU Fire Extinguishing
AGENT "DISCH" Light
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific multimeter No specific warning notice No specific 3/32 in. Allen Key No specific access platform 2.5 m (8 ft. 2 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power
3. Job Set-up
__________
Subtask 26-22-00-861-063
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 26-22-00-865-079
B. 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 26-22-00-010-061
C. Get Access
R (1) Put the access platform in position at the access door 312AR
R (2) Open access door 312AR.
R (3) Set the SERVICE LT switch 3LJ to on.
R (4) Put the access platform in position at the access door 314AR
R R (5) Open access door 314AR.
R (6) Disconnect the connector 11WF-A from the pressure switch 11WF of the APU Fire-Extinguishing Bottle.
4. Procedure_________
Subtask 26-22-00-710-069
A. Test
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the pressure-switch connector On the multimeter:
(11WF):
- connect the leads of the - a closed circuit is shown, indicating
multimeter between pin B and a pressurized bottle.
pin C.
- put the 3/32 in. Allen Key into
the pressure-switch test
socket.
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------- slowly turn the Allen Key - an open circuit is shown. clockwise or counterclockwise approx. 10 degrees.
- release the Allen Key. - a closed circuit is shown.
- remove the Allen Key from the test socket and disconnect the multimeter.
5. Close-up________
Subtask 26-22-00-410-062
A. Close Access
(1) Make sure that the electrical connectors are clean and in the correct condition.
(2) Connect the connector 11WF-A to the pressure switch 11WF.
R (3) Make sure that the work area is clean and clear of tool(s) and other items.
R (4) Close the access door 314AR.
R (5) Set the SERVICE LT switch 3LJ to off.
R (6) Close the access door 312AR.
R (7) Remove the access platform(s).
R (8) Put a warning notice in the cockpit to tell the flight crew that the APU AGENT DISCH light is deactivated.
R (9) Make an entry in the A/C technical logbook.
Subtask 26-22-00-865-080
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WF, 2WF.
Subtask 26-22-00-862-063
C. De-energize the ground service network (Ref. TASK 24-42-00-862-001).
TASK 26-22-00-040-005
Circuit Verfication
WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
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