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III. Connect the motor to the control, apply power, and advance the
speed adjust knob to the maximum setting on the dial:
A. If the line fuse continues to blow:
1. The motor may be overloaded.
a. Disconnect the power from the control.
b. Disconnect the load from the motor.
c. Apply power.
Motor should run at full speed
without blowing the fuse.
2. Motor armature may be shorted or grounded.
Disconnect the motor cable. An ohmmeter reading on
the motor cable armature connections should read
approximately 380 ohms. A reading from either side of
the armature connections to the motor frame should
show open (use high ohm scale).
3. The filter capacitor (C4), may be shorted.
Troubleshooting
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