Fire detector circuit breaker trips.

TM 55-1510-218-MTF

a. Defective flame detector.

b. Defective fire protection test switch.

Fire detector circuit breaker trips.

C51.

a. Short circuit in wiring or components.

Left FIRE PULL warning light illuminates in

C52.

all test positions but right FIRE PULL warning

light does not.

a Defective right fire detection control ampli-

fier.

b. Defective wiring between fire warning power

circuit breaker and right control amplifier.

Right FIRE PULL warning light illuminates in

C53.

all test positions but left FIRE PULL warning

light does not.

a. Defective left fire detection control amplifi-

er.

b. Defective wiring between fire warning power

circuit breaker and left control amplifier.

Ventilation blower will not run.

C54.

a. Tripped vent blower circuit breaker.

b. Defective motor brushes.

c. Defective wiring.

Ventilation blower draws excessive current.

C55.

a. Misaligned or preloaded bearings.

b. Defective bearings.

Ventilation blower runs at reduced speed.

C56.

a. Brushes not seated properly.

Ventilation blower draws excessive current and

C57.

runs it high speed.

a. Shorted turns in field windings.

Ventilation blower draws excessive current and

C58.

speed surges.

3-15