20
OVERHEATING (continued)
CAUSE
CHECK AND REMEDY
High room temperature. Improve ventilation.
Insufficient circulation. Provide cross–ventilation.
Low power factory. Reduce inductive loads or install power factor im-
provement capacitors.
Unbalanced load The load on each leg should be as evenly balanced
as possible and should not exceed the rated cur-
rent on any leg.
Dry bearing. Replace bearing.
MECHANICAL NOISE
CAUSE
CHECK AND REMEDY
Defective bearing. Replace bearing.
Rotor scrubbing on stator. Bad bearing; replace. Bent shaft, return to factory.
Loosen end bell, tighten; loose drive discs, tighten.
Loose laminations. Return to factory.
Loose or misaligned coupling. Tighten or align.
GENERATOR FRAME PRODUCES SHOCK WHEN TOUCHED
CAUSE
CHECK AND REMEDY
Static charge. Ground generator frame.
Grounded armature or field coil. Return to factory for repair.
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