TM 55-1510-220-MTF
a.
Defective right fire detection control amplifier.
b.
Defective wiring between fire warning power circuit breaker and right control amplifier.
C48.
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.
C49.
Ventilation blower will not run.
a.
Tripped vent blower circuit breaker.
b.
Defective motor brushes.
c.
Defective motor.
d.
Defective switch.
e.
Defective wiring.
C50.
Ventilation blower draws excessive current.
a.
Misaligned or preloaded bearings.
b.
Defective bearings.
C51.
Ventilation blower runs at reduced speed.
a.
Brushes not seated properly.
C52.
Ventilation blower draws excessive current and runs at high speed.
a.
Shorted turns in field windings.
C53.
Ventilation blower draws excessive current and speed surges.
a.
Shorted turns in armature.
C54.
Ventilation blower has excessive vibration.
a.
Armature out of balance.
b.
Impeller fan damaged.
c.
Impeller fan out of balance.
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