Specifications

172
Armature too hot Check meter readings
against name plate rating.
Excessive brush pressure.
Belt too tight, or coupling not
aligned.
End plate out of position.
Bent shaft.
Armature coil shorted
Armature striking poles.
Check bearing for play and
air gap for proper spacing,
shaft for bent condition.
Poor ventilation.Clogged air
passages.
Repeated changes in load
in bulk. Observe meter
readings.
4
Shorted or grounded coils.
Poor ventilation.
Overload (compound
generator) check meter
readings against name
plate data.
Field coils hot5
Output voltage too
high (dc generator)
Field resistor not properly
adjusted
Reversed field coil or
armature coil connections
Prime mover speed too
high.
Faulty voltage regulator
Overloaded.
3
Adjust governing device.
Adjust or replace faulty
voltage regulator.
Check speed.
Reduce load.
Adjust pressure or replace
tension springs.
Adjust belt. Align units
properly.
Assemble correctly.
Straighten on lathe or
replace.
Repair or replace armature.
Replace bearings.
Straighten shaft or replace
armature.
Clean clogged air
passages. Provide
clearance. For circulation of
air around equipment.
Clean equipment.
Faulty design. Generator
should be used in steady
load application.
Replace shorted coils;
grounded coils may be
repaired.
Clean clogged air
passages.
Provide clearance for air
circulation around
equipment.
Reduce load.