Mechanical And Electrical Problems - Powermatic PM1500 Operating Instructions And Parts Manual

14.2 Mechanical and Electrical Problems

Trouble
Machine will not
start/restart or
repeatedly trips circuit
breaker or blows
fuses.
Probable Cause
No incoming power.
Cord damaged.
Overload automatic reset has not been
reset.
Band Saw frequently trips.
Building circuit breaker trips or fuse
blows.
Switch or motor failure
distinguish).
Motor overheated.
Motor failure.
Miswiring of unit.
Table 6
Remedy
Verify machine is connected to power
source, and safety key is installed on
switch.
Replace cord.
Reset
completely the OFF (red) button on the
magnetic switch. Allow a few minutes
for machine to cool. If problem persists,
check amp setting on 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 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, there is probably a
loose electrical lead.
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.
If you have access to a voltmeter, you
can separate a starter failure from a
motor failure by first, verifying incoming
voltage at 230+/-10% and second,
checking the voltage between starter
(how to and motor at 230+/-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.
Clean motor of dust or debris to allow
proper air circulation. Allow motor to
cool down before restarting.
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 for testing.
Double check to confirm all electrical
connections are correct. Refer to wiring
diagram
corrections.
29
overload by pushing
to make any needed
in