TM 55-1520-240-T
12-2.4 FIRE DETECTION SYSTEM OPERATIONAL CHECK
12-2.4
INITIAL SETUP
References:
Applicable Configurations:
TM 55-1520-240-23
All
Equipment Condition:
Tools:
TM 55-1520-240-23:
None
Battery Connected
Materials:
Electrical Power On
None
Hydraulic Power Off
Visual Check of Fire Detection System Performed
Personnel Required:
(Task 12-2.3)
Aircraft Electrician
TASK
RESULT
1.
Check that ENGINE NO. 1 FIRE DET circuit breaker
If ENGINE NO. 1 FIRE DET circuit breaker (1) is open,
(1) is closed.
close it. If it opens again, go to task 12-2.5.
2.
Check that ENGINE NO. 2 FIRE DET circuit breaker
If ENGINE NO. 2 FIRE DET circuit breaker (2) is open,
(2) is closed.
close it. If it opens again, go to task 12-2.5.
3.
Check NO. 1 ENGINE and NO. 2 ENGINE fire handles
If either fire handle (3 or 4) caption FIRE PULL/FUEL
(3 and 4).
SHUTOFF is lit, go to task 12-2.6 or 12-2.7.
4.
Set and hold FIRE DETECTOR switch (5) to TEST.
FIRE PULL/FUEL SHUTOFF captions in NO. 1 ENGINE
and NO. 2 ENGINE fire handle (3 and 4) shall light. If both
captions do not come on, go to task 12-2.8. If either
caption does not come on, go to task 12-2.9 or 12-2.10.
5.
Release FIRE DETECTOR switch (5).
Both FIRE PULL/FUEL SHUTOFF captions in NO. 1
ENGINE and NO. 2 ENGINE fire handles (3 and 4) shall
go out. If both captions do not go out, replace FIRE
DETECTOR switch (5).
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Electrical power off.
Battery disconnected.
END OF TASK
Change 23 12-34.1/(12-34.2 blank)
