Baldor BC140 Installation And Operation Manual page 43

Table 10-1 provides information on symptoms, possible causes, and the suggested corrective action for
controls without optional forward-brake-reverse switch installed.
Table 10-1 Troubleshooting Guide for Controls without Optional Forward-Brake-Reverse Switch Installed
Symptom
Motor is not running and
Pilot Light not illuminated.
Motor does not run and
Pilot Light is illuminated.
Motor hums, runs at very
low speed, or slows down
substantially when load is
applied.
Possible Cause
On/Off AC Line Switch in "Off"
Position.
Blown Line fuse.
Defective On/Off AC Line Switch,
Main Speed Potentiometer set fully
counterclockwise.
Defective motor.
Plug-In Horsepower Resistor
installed.
Blown Armature Fuse.
CL Trimpot set fully
counterclockwise.
Low AC line input voltage.
Suggested Corrective Action
Set On/Off Switch to "On" Position.
Replace Line Fuse. See Table 4-2.
Replace On/Off AC Line Switch.
Rotate Main Speed potentiometer
clockwise.
Check for defective motor, worn
brushes, etc. Replace motor, if
necessary.
Install the correct Plug-In
not
®
Horsepower Resistor
4-3.
Replace Armature Fuse. See Table
4-2.
Set CL Trimpot, as described in
Section 7.
Check AC line input voltage.
. See Table
®
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