Powermatic PM15, Operating Instructions And Parts Manual

Page: 25 / 40

25
Trouble Probable Cause Remedy
Failed or broken interlock switch.
Examine the switch and switch
housing for any sign of damage. If
damage is seen, replace components.
If the switch circuitry is suspect, you
have two options: have a qualified
electrician test the switch for function,
or purchase a new switch and
establish if that was the problem on
changeout.
Motor/starter failure (how to
distinguish).
Examine motor starter for burned or
failed components. If damage is
found, replace motor starter. If motor
starter looks okay but is still suspect,
you have two options: have a
qualified electrician test the motor
starter for function, or purchase a new
starter and establish if that was the
problem on changeout.
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
between starter 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.
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 motor repair shop for testing.
Miswiring of the unit.
Double check all connections and
consult the electrical breakdowns if
changes are needed.
Machine will not
start/restart or
repeatedly trips
circuit breaker or
blows fuses.
(cont.)
On/off switch failure.
If the on/off switch is suspect, you
have two options: Have a qualified
electrician test the switch for function,
or purchase a new on/off switch and
establish if that was the problem on
changeout.