Powermatic 1285 Troubleshooting Mechanical and Electrical Problems, Trouble Probable Cause Remedy

Trouble	Probable Cause	Remedy
Uneven knife marks	Knives/inserts are knicked, or out of	Replace knicked knives/inserts; align
		knives properly with knife-setting gauge
on workpiece.	alignment.
		(straight cutterhead only).

Troubleshooting – Mechanical and Electrical Problems

Trouble

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

Probable Cause	Remedy
No incoming power.	Verify unit is connected to power, and
	on-switch is pushed in completely.
	When jointer overloads on the circuit
	breaker built into the motor starter, it
	takes time for the machine to cool
Overload automatic reset has not	down before restart. Allow unit to
reset.	adequately cool before attempting
	restart. If problem persists, check
	amp setting on the motor starter
	inside the electrical enclosure.
	One cause of overloading trips which
	are not electrical in nature is too
	heavy a cut. The solution is to take a
	lighter cut. If too deep a cut is not the
	problem, then check the amp setting
Jointer frequently trips.	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 jointer 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
Motor starter failure.	between starter and 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.
	Clean motor of dust or debris to allow
Motor overheated.	proper air circulation. Allow motor to
	cool down before restarting.

25