Flight Systems 56-5961-00, Руководство пользователя, Страница: 7 / 12

5
Troubleshooting
Blinking while Cranking
Causes: normal operation, no issue
No Response at Control Switch
Causes: faulty switch, poor connections, missing connections, or
dead battery
Starter Engages and Disengages
C
auses: low cranking voltage
Starting Batteries Don’t Maintain a Charge
Causes: marginal battery, battery connections, or charging system
No AC Power While Controller is Running
Causes: a circuit breaker is off, tripped or malfunctioning, or there
are poor AC harness connections
Engine Surging Without Fault Shutdown
Causes: fuel leaks, restrictions or air bubbles, worn slip
rings/brushes, misadjusted or faulty governor, worn generator
bearing
Testing the Generator ’s Windings
This procedure requires an ohmmeter, set on the lowest resistance
scale (usually 200-ohm.) On the control board mating connector,
with the generator NOT RUNNING, measure these points:
▪
Pin 1 to Pin 14 – Field winding (rotor) = 20-30 ohms.
▪
Pin 3 to Pin 13 – Quadrature winding = 1.5-3.0 ohms.
▪
Pin 33 to Pin 34 – Sense Transformer = 500-600 ohms.
▪
Circuit breaker 1 (T1 wire) to Ground = .15-.30 ohms.
▪
Circuit breaker 2 (T4 wire) to Ground = .15-.30 ohms.
Solid Light while Cranking
NEW FEATURE
Causes: open field or high resistance, be sure to check your slip
rings and brushes for continuity