Use and Care Manual

17
15.2 Mechanical and electrical problems
Table 2
Trouble Probable Cause Remedy
Machine will not
start/restart or
repeatedly trips circuit
breaker or blows
fuses.
Machine will not
start/restart or
repeatedly trips circuit
breaker or blows fuses
(cont.)
No incoming power.
Verify machine is connected to power
source. Make sure START button is
pushed in completely, and STOP button
is disengaged.
Cord damaged. Replace cord.
Overload automatic reset has not reset.
When the band saw overloads on the
circuit breaker built into the motor
starter, it may take time for the machine
to cool down before restart. Allow unit to
adequately cool before attempting
restart. 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.
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.
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
appropriate wiring diagrams to make
any needed corrections.
Switch failure.
If switch is suspect, you have two
options: Have a qualified electrician test
the switch for function, or purchase a
new start switch and establish if that
was the problem on changeout.
Band Saw does not
come up to speed.
Extension cord too light or too long.
Replace with adequate size and length
cord.
Low current. Contact a qualified electrician.