TM 1-1510-225-MTF
C46.
Left FIRE warning light illuminates in test posi-
tion but right FIRE warning light does not-
a. Defective right fire detector.
b. Defective wiring between fire warning power cir-
cuit breaker and right fire detector.
C47.
Right FIRE warning light illuminates in test posi-
tion but left FIRE warning light does not.
a. Defective left fire detector.
b. Defective wiring between fire warning power cir-
cuit breaker and left fire detector.
C48.
Ventilation blower will not run.
a. Tripped vent blower circuit breaker.
b. Defective motor brushes.
c. Defective wiring.
d. Defective motor.
e. Defective switch.
C49.
Ventilation blower draws excessive current.
a. Misaligned or preloaded bearings.
b. Defective bearings.
C50.
Ventilation blower runs at reduced speed.
a. Brushes not seated properly.
C51.
Ventilation blower draws excessive current and
runs at high speed.
a. Shorted turns in field windings.
C52.
Ventilation blower draws excessive current and
speed surges.
a. Shorted turns in armature.
C53.
Ventilation blower has excessive vibration.
a. Armature out of balance.
b. Fan damaged
c. Fan out of balance.
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