Jet Tools VBS-3612 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.
Cord damaged.	Replace cord.
	When the band saw overloads on the
	circuit breaker built into the motor
	starter, it may take time for the
Overload automatic reset has not	machine to cool down before restart.
reset.	Allow unit to adequately cool before
	attempting restart. 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.

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