Powermatic M-1791257 operating instructions Troubleshooting Mechanical and Electrical Problems

Troubleshooting – Mechanical and Electrical Problems

Trouble

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

Probable Cause	Remedy
	Verify machine is connected to power
No incoming power.	source. Make sure START button is
	pushed in completely, and the STOP
	button is disengaged. See page 21.
Cord damaged.	Replace cord.
	Remove the switch plate from the rear
	of the column (see page 14) and reset
Overload automatic reset has not been	the overload by pushing in completely
reset.	the OFF (red) button on the magnetic
	switch. If problem persists, check amp
	setting on the motor starter.
	One cause of overloading trips which
	are not electrical in nature is too heavy
	a cut. The solution is to reduce feed
	pressure into the blade. If too heavy a
	cut is not the problem, then check the
Band Saw frequently trips.	amp setting on the overload relay.
	Match the full load amps on the motor
	as noted on the motor plate. If amp
	setting is correct then there is probably
	a loose electrical lead. Check amp
	setting on motor starter.
	Verify that band saw is on a circuit of
Building circuit breaker trips or fuse	correct size. If circuit size is correct,
blows.	there is probably a loose electrical lead.
	Check amp setting on motor starter.
	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
Switch or motor failure (how to	and motor at 220+/-20. If incoming
distinguish).	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.
	Clean motor of dust or debris to allow
Motor overheated.	proper air circulation. Allow motor to
	cool down before restarting.
	If electric motor is suspect, you have
	two options: Have a qualified electrician
Motor failure.	test the motor for function or remove the
	motor and take it to a qualified electric
	motor repair shop and have it tested.
	Double check to confirm all electrical
	connections are correct. Refer to
Miswiring of the unit.	appropriate wiring diagrams on pages
	54 through 57 to make any needed
	corrections.

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