Use and Care Manual

33
16.2 Mechanical and Electrical Problems
Table 4
Trouble Probable Cause Remedy
Machine will not
start/restart or
repeatedly trips circuit
breaker or blows
fuses.
No incoming power.
Verify machine is connected to power
source, and that the safety key is
installed on the switch.
Cord damaged. Replace cord.
Overload automatic reset has not been
reset.
Re-set the overload by pushing in
completely the OFF (red) button on the
magnetic switch. Allow a few minutes for
the machine to cool. If problem persists,
check amp setting on the motor starter.
Band Saw frequently trips.
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 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.
Building circuit breaker trips or fuse
blows.
Verify that band saw is on a circuit of
correct size. If circuit size is correct,
there is probably a loose electrical lead.
Check amp setting on motor starter.
Switch or motor failure (how to
distinguish).
If you have access to a voltmeter, you
can separate a starter failure from a
motor failure by first, verifying incoming
voltage at 220+/-10 and second,
checking the voltage between starter
and motor at 220+/-10. 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.
Motor overheated.
Clean motor of dust or debris to allow
proper air circulation. Allow motor to cool
down before restarting.
Motor failure.
If electric motor is suspect, you have two
options: Have a qualified electrician test
the motor for function or remove the
motor and take it to a qualified electric
motor repair shop and have it tested.
Miswiring of the unit.
Double check to confirm all electrical
connections are correct. Refer to wiring
diagrams to make any needed
corrections.