LOW VOLTAGE (Continued)
CAUSE | CHECK AND REMEDY |
High resistance connections- | Make better connection electrically and |
Connections will be warm or hot | mechanically. |
Shorted field. | Test field coils for possible short by checking |
| resistance with an ohmmeter or resistance bridge. |
| Return rotor assembly to factory for repair if alternator |
| field coils are shorted. |
Low power factor | Reduce inductive (motor) load. Some AC motors |
| Draw approximately the same current regardless of |
| load. Do not use motors of larger horsepower rating |
| than is necessary to carry the mechanical load. |
FLUCTUATING VOLTAGE | |
(May be indicated by flickering lights.) | |
CAUSE | CHECK AND REMEDY |
Irregular speed of engine. | Check engine for malfunction or load for fluctuation. |
Fluctuating speed. | Stabilize load. The addition of a lamp load (resistance |
| load) may compensate partially for load changes |
| caused by intermittent motor operation. Do not |
| overload. |
Loose terminal or load connections. | Make better connection mechanically and electrically. |
Defective bearing causing uneven air gap. Replace worn bearing. | |
| HIGH VOLTAGE |
CAUSE | CHECK AND REMEDY |
Excessive speed. | Check engine for malfunction. |
| OVERHEATING |
CAUSE | CHECK AND REMEDY |
Generator overloaded. | Reduce load. (Check with ammeter and compare with |
| nameplate rating.) |
Clogged ventilating screens. | Clean air passages. |