Powermatic Troubleshooting the OES9138 Edge Sander, Probable Cause Remedy

Troubleshooting the OES9138 Edge Sander

Trouble

Machine will not start/restart or repeatedly trips circuit breakers or blows fuses.

Probable Cause	Remedy
Machine not connected to	Verify machine is connected to power.
power source.
Fuse blown, or circuit	Replace fuse, or reset circuit breaker.
breaker tripped.
Cord damaged.	Replace cord.
Extension cord too light or	Use adequate size extension cord.
too long.
	If the Edge Sander overloads on the circuit breaker
Overload automatic reset	built in to the motor starter, it takes time for the
	machine to cool down before restart. Allow unit to
has not reset.	adquately cool before attempting restart. If problem
	persists, check amp setting on the motor starter
	inside the electrical box.
	Check the amp setting on the overload relay.
Edge Sander frequently	Match the full load amps on the motor as noted on
	the motor plate. If amp setting is correct then there
trips.
	is probably a loose electrical lead or a failed
	component. See below.
	Verify that edge sander is on a circuit of correct
Building circuit breaker trips	size. If circuit size is correct, there is probably a
or fuse blows.	loose electrical lead. Check amp setting on motor
	starter.
	Go through all the electrical connections on the
Loose electrical	edge sander including motor connections, verifying
	the tightness of each. Look for any signs of
connections.
	electrical arcing which is a sure indicator of loose
	connection or circuit overload.
	If you have access to a voltmeter, you can
	separate a starter failure from a motor failure by
	first, verifying incoming voltage at 220+/-20 and
	second, checking the voltage between starter and
Motor starter failure.	motor at 220+/-20. If incoming voltage is incorrect,
	you have a power supply problem. If voltage
	between starter and motor is incorrect, you have a
	starter problem. If voltage between starter and
	motor is correct, you have a motor problem.
	If electric motor is suspect, you have two options:
	Have a qualified electrician test the motor for
Motor failure.	function or remove the motor and take it to a
	qualified electric motor repair shop and have it
	tested.

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