Harbor Freight Tools 66615 User Manual - Page 17
Troubleshooting
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SAFETY Troubleshooting Problem Tool will not start. Possible causes 1. Cord not connected. Likely Solutions 1. Check that cord is plugged in. 2. No power at outlet. 3. Tool's thermal reset breaker tripped (if equipped). 4. Internal damage or wear. (Carbon brushes or switch, for example.) Tool operates slowly. 1. Excess pressure applied to workpiece. 2. Check power at outlet. If outlet is 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. 3. Turn off tool and allow to cool. Press reset button on tool. 4. Have technician service tool. 1. Decrease pressure, allow tool to do the work. 2. Power being reduced by long or small 2. Eliminate use of extension cord. diameter extension cord. If an extension cord is needed, use one with the proper diameter for its length and load. See Extension Cords in GROUNDING section. Performance Carbon brushes worn or damaged. Have qualified technician replace brushes. decreases over time. Excessive noise Internal damage or wear. Have technician service tool. or rattling. (Carbon brushes or bearings, for example.) Overheating. 1. Forcing tool to work too fast. 1. Allow tool to work at its own rate. 2. Blocked motor housing vents. 2. Wear ANSI-approved safety goggles and NIOSH-approved dust mask/ respirator while blowing dust out of motor using compressed air. 3. Motor being strained by long or small diameter extension cord. Tool does not sand effectively. 1. Accessory loose. 3. Eliminate use of extension cord. If an extension cord is needed, use one with the proper diameter for its length and load. See Extension Cords in GROUNDING section. 1. Confirm accessory arbor is correct and Outer Flange/Arbor Nut is tight. 2. Accessory damaged, worn or wrong type for the material. 2. Check condition and type of disc accessory. Use only proper type of disc accessory in good condition. Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service. SETUP OPERATION MAINTENANcE Item 66615 For technical questions, please call 1-888-866-5797. Page 17