Chicago Electric 91938 Troubleshooting, Problem Possible Causes Likely Solutions

Troubleshooting

Problem		Possible Causes		Likely Solutions
Tool will not start.	1.	Cord not connected.	1.	Check that cord is plugged in.
	2.	No power at outlet.	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.	Tool’s thermal reset breaker	3.	Turn off tool and allow to cool. Press reset button
		tripped (if equipped).		on tool.
	4.	Internal damage or wear.	4.	Have technician service tool.
		(Carbon brushes or switch, for
		example.)
Tool operates slowly.	Extension cord too long or wire size		Eliminate use of extension cord. If an extension
	too small.		cord is needed, use shorter/heavier gauge cord.
			See Extension Cords in GROUNDING section.
Performance	Carbon brushes worn or damaged.		Have qualified technician replace brushes.
decreases over time.
Excessive noise or	Internal damage or wear. (Carbon		Have technician service tool.
rattling.	brushes or bearings, for example.)
Overheating.	1. Forcing machine to work too fast.		1.	Allow machine to work at its own rate.
	2.	Accessory misaligned.	2.	Check and correct accessory to fence and/or
				table alignment.
	3.	Blocked motor housing vents.	3.	Wear ANSI-approved safety goggles and NIOSH-
				approved dust mask/respirator while blowing dust
				out of motor using compressed air.
	4.	Motor being strained by long or	4.	Eliminate use of extension cord. If an extension
		small diameter extension cord.		cord is needed, use one with the proper diameter
				for its length and load. See Extension Cords in
				GROUNDING section.

Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service.

SKU 91938 For technical questions, please call 1-800-444-3353. Page 13