Powermatic PM1800 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, and that the safety key is
	installed on the switch.
Cord damaged.	Replace cord.
	Re-set the overload by pushing in
	completely the OFF (red) button on
Overload automatic reset has not	the magnetic switch. Allow a few
been reset.	minutes for the machine to cool. 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
Band Saw frequently trips.	check the 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,
	there is probably a loose electrical
blows.
	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
Switch or motor failure (how to	between starter and motor at 220+/-
distinguish).	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.
	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
Motor failure.	electrician test the motor for function
	or remove the motor and take it to a
	qualified electric motor repair shop
	and have it tested.

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