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TROUBLESHOOTING PROCEDURES - continued - TM-55-1925-292-14-P0147
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TM-55-1925-292-14-P Firefighting Fire Alarm and Fire Suppression Systems Inland and Coastal Large TUG (LT) Manual
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TROUBLESHOOTING PROCEDURES - continued - TM-55-1925-292-14-P0149
TM 55-1925-292-14&P
0009 00
Electric Horn Does Not Sound when
the FM-200 System is Actuated
WARNING
Take great care when working
around energized electrical
equipment. Contact between
unprotected body parts and
electrical conductors can cause
serious injury or death.
Does
Place pressure switch PS-1A UP in
any electric
Yes
the OPERATE position, and
horn sound when
measure for 24 Vdc between the
the FM-200 system
black and white wires on the
is actuated?
inoperative horn.
No
Is
Electric horn is faulty.
Yes
WARNING
24 Vdc
Notify the maintenance
Take great care when working
present?
supervisor of the defect.
around energized electrical
equipment. Contact between
unprotected body parts and
No
electrical conductors can cause
serious injury or death.
Locate and repair the
faulty circuit in the FM-200
Place pressure switch PS-1A UP in
system electrical wiring
the OPERATE position, and measure
between PS-1A and the
for 24 Vdc between terminal 2 and the
electrical horn.
black wire in PS-1A.
Locate and repair the
faulty circuit in the FM-200
Is
No
system between the
24 Vdc
emergency generator battery
present?
charger and PS-1A.
Yes
WARNING
Take great care when working
Does
Pressure switch PS-1A
No
around energized electrical
pressure switch
is faulty. Notify the
equipment. Contact between
PS-1A check
maintenance supervisor
unprotected body parts and
good?
of the defect.
electrical conductors can cause
serious injury or death.
Yes
Set the FM-200 SYSTEM circuit
breaker in the 01 and 02 emergency
lighting panel 1 to OFF and place
Locate and repair the
pressure switch PS-1A UP in
faulty circuit in the FM-200
the OPERATE position. Measure for
system electrical wiring
continuity across PS-1A terminals
between PS-1A and the
2 and 3.
inoperative horns.
Exit
Procedure 7. Electric Horn Does Not Sound When the FM-200 System is Actuated
0009 00-12

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