7. TROUBLESHOOTING
44
WARNING-Disconnect the machine from the power source before troubleshooting or serious personal
injury could occur.
Problem
Possible cause
Troubleshooting
The machine cannot be
switched on.
1. Door in machine frame or saw
blades cover plate is opened.
2. Control circuit fuses defective.
1. Close the machine door or cover plate.
2. Turn off the main switch, open the switch
cabinet and identify which of the fuses is
defective and remove it. Replace new fuses,
only using fuses of the same rating!
The machine switches off
automatically during
operation.
1. Power failure in one or several
phases due to responding
factory fuses.
2. Overload protection has
responded due to blunt saw or
excessive feed speed.
3. Control circuit fuses defective.
1. Eliminate cause of phase failure.
2. Change saw blade or reduce feed speed.
Allow motor to cool down.
3. Turn off the main switch, open the switch
cabinet and identify which of the fuses is
defective and remove it. Replace new fuses,
only using fuses of the same rating!
Motor will not start, or it
growls on start up.
1. Emergency stop button is
depressed.
2. Power supply fuse or circuit
breaker has tripped.
3. Thermal overload has tripped.
4. Toggle switch is broken inside.
5. Start capacitor is at fault.
6. Motor fan cover is dented,
stopping the fan from being able
to spin.
7. Motor is at fault.
1. Rotate the button clockwise and allow it to
pop out.
2. Disconnect power, and inspect circuit for
electrical shorts and repair. Replace circuit
breaker if it is old or has tripped many times.
3. Reset the thermal overload.
4. Disconnect power, and use an ohmmeter to
check switch terminals for continuity, and
replace switch if required.
5. Replace start capacitor.
6. Replace motor fan cover (and fan, if
damaged).
7. Replace motor.
Summary of Contents for P12 10
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