TM 55-1510-219-MTF
a.
Defective right fire detection control amplifier.
b.
Defective wiring between fire warning power circuit
breaker and right control amplifier.
C49.
Right FIRE PULL warning light illuminates in all test
position but left FIRE PULL warning light does not.
a.
Defective left fire detection control amplifier.
b.
Defective wiring between fire warning power circuit
breaker and left control amplifier.
C50.
Ventilation blower will not run.
a.
Tripped vent blower circuit breaker.
b.
Defective motor brushes.
c.
Defective wiring.
d.
Defective motor.
e.
Defective switch.
C51.
Ventilation blower draws excessive current.
a.
Misaligned or preloaded bearings.
b.
Defective bearings.
C52.
Ventilation blower runs at reduced speed.
a.
Brushes not seated properly.
C53.
Ventilation blower draws excessive current and runs at
high speed.
a.
Shorted turns in field windings.
C54.
Ventilation blower draws excessive current and speed
surges.
a.
Shorted turns in armature.
C55.
Ventilation blower has excessive vibration.
a.
Armature out of balance.
b.
Impeller fan damaged.
c.
Impeller fan out of balance.
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