44
Symptom
Possible Cause
Suggested Corrective Action
Erratic motor performance.
Overload condition.
Remove overload.
Incorrect Plug-In Horsepower
Resistor
®
.
Install the correct Plug-In
Horsepower Resistor
®
. See Table
4-3.
CL and/or IR Trimpots may be set
incorrectly.
Readjust the CL and/or IR Trimpots,
as described in Section 7.
Defective speed control module.
Replace speed control.
Voltage Select Switch set to wrong
position.
Recheck line voltage and the
correct setting of the Voltage Select
Switch, as described in Section 6.
Defective motor, worn brushes, etc.
Repair or replace motor.
Motor continues to run with
Main Speed Potentiometer
set fully counterclockwise.
MIN speed trimpot set higher than
0% of base speed.
Readjust the MIN Trimpot, as
described in Section 7.
IR Comp trimpot set too high.
Readjust the IR Trimpot, as
described in Section 7.
Motor runs in wrong
direction.
Motor armature leads are reversed.
Reconnect motor armature leads.
Table 10-1 Troubleshooting Guide for Controls without Optional Forward-Brake-Reverse
Switch Installed (Continued)
