R R (5) On the electrical connector 474VC: - use the multimeter to do a check of the continuity between the pin 2 and the A/C ground.
NOTE : If the test is not OK, you must do the weight check of the____ engine fire-extinguisher bottle (Ref. TASK 26-21-41-280-001).
R
Subtask 26-21-00-280-054
R D. Check of the ENG 2 Fire Extinguisher Bottle 2
R R NOTE : Two persons are necessary to do this check: one person to read the____ value on the multimeter, the other to use the Allen wrench.
R R (1) On the electrical connector 472VC: - use a multimeter to do a check of the continuity between the pin 3 and the A/C ground.
(2) On the fire extinguisher bottle 8WE2:
R R CAUTION : DO NOT USE FORCE WHEN YOU TURN THE ALLEN WRENCH. IF YOU USE_______ FORCE, YOU CAN CAUSE DAMAGE TO THE PRESSURE SWITCH.
R - engage the Allen wrench (3/32 in. hex key) into the test point (Allen key) - turn the Allen wrench clockwise (by 10 degrees approximately) until you can feel a force, and hold it in this position.
R R (3) On the electrical connector 472VC: - make sure with the multimeter that there is no continuity between the pin 3 and the A/C ground.
R (4) On the fire extinguisher bottle 8WE2: - release the Allen wrench.
R R NOTE : If the pressure in the bottle is correct, the Allen wrench____ goes back to its initial position.
R
R R (5) On the electrical connector 472VC: - use the multimeter to do a check of the continuity between the pin 3 and the A/C ground.
NOTE : If the test is not OK, you must do the weight check of the____ engine fire-extinguisher bottle (Ref. TASK 26-21-41-280-001).
R
Subtask 26-21-00-420-050
E. Connect the electrical connector
(1)
Remove the blanking caps from the electrical connectors.
(2)
Make sure that the electrical connectors are clean and in the correct condition.
(3)
Connect the electrical connector at RIB 7A:
-
for the ENG 1 fire extinguisher bottle 1: 473VC
-
for the ENG 1 fire extinguisher bottle 2: 475VC
-
for the ENG 2 fire extinguisher bottle 1: 474VC
-
for the ENG 2 fire extinguisher bottle 2: 472VC.
5. Close-up
________ Subtask 26-21-00-865-055
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 6WE1, 6WE2 1WE1, 2WE1 FOR 8WE1, 8WE2 1WE2, 2WE2
Subtask 26-21-00-710-052
B. Do this test
(1) Do an operational test of the engine fire and overheat detection (loop/squib) (Ref. TASK 26-12-00-710-001).
NOTE : On the ENG/APU FIRE panel 1WD, ignore the DISCH legends which
____ come on on the ENG 1 (2) AGENT 1 and AGENT 2 pushbutton switches.
Subtask 26-21-00-942-062
C. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panel(s).
(3)
Close the access door(s).
(4)
Remove the access platform(s).
(5)
Remove the warning notice(s).
1EFF : ALL 1 26-21-00Page 408 1 1 Nov 01/03R 1 1 1CES 1
TASK 26-21-00-040-002
ENG FIRE TEST - Circuit Verification
CAUTION : TO RESET THE ENG 1(2) APU FIRE PUSHBUTTON SWITCH:
_______
-PUSH THE PUSHBUTTON SWITCH FULLY IN (LATCHED POSITION).
THEN CLOSE THE GUARD.
DO NOT TRY TO CLOSE THE GUARD AND PUSH THE PUSHBUTTON SWITCH AT THE
SAME TIME.
1. Reason for the Job
__________________
Refer to the MMEL TASK: 26-21-03
Engine Fire Extinguishing
ENG FIRE TEST
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
26-12-00-710-002 Operational Test of the Engine Fire and Overheat Detection with the Centralized Fault Display System (CFDS)
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