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Page 11For technical questions, please call 1-800-444-3353.SKU 40457
Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start. Cord not connected.1.
No power at outlet. 2.
Internal damage or wear. (Carbon 3.
brushes or switch, for example.)
Check that cord is plugged into 120V 1.
outlet.
Check power at outlet. If outlet is 2.
unpowered, turn off tool and check circuit
breaker. If breaker is tripped, make sure
circuit is right capacity for tool and circuit
has no other loads.
Have technician service tool.3.
Tool operates slowly. Tool is set on slow speed setting.1.
Excess pressure applied to workpiece. 2.
Power being reduced by too lengthy or 3.
small diameter extension cord.
Increase speed setting.1.
Decrease pressure, allow tool to do the 2.
work.
Eliminate use of extension cord. If an 3.
extension cord is needed, use one with
the proper diameter for its length and load.
See Extension Cords in GROUNDING
section.
Performance
decreases over time.
Worn internal components.
Excessive noise or
rattling.
Internal damage or wear. (Worn bearings,
for example.)
Have technician service tool.
Overheating. Forcing tool to work too fast.1.
Blocked motor housing vents. 2.
Motor being strained by too lengthy or 3.
small diameter extension cord.
Allow tool to work at its own rate.1.
2.
while blowing dust out of motor using
compressed air.
Eliminate use of extension cord. If an 3.
extension cord is needed, use one with
the proper diameter for its length and load.
See Extension Cords in GROUNDING
section.
Tool does not grind,
sand or brush
effectively.
Disc accessory may be loose on 1.
Spindle. Check tightness of Collet Nut
or threaded disc accessory on Spindle.
Disc accessory may be damaged, worn 2.
or wrong type for the material.
Be sure disc accessory is of correct 1.
dimension and Collet Nut is tight.
Check condition and type of disc 2.
accessory. Use only proper type of disc
accessory. Accessories must be in good
condition.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.