Troubleshooting - KNOVA KN BD-305 Manual Del Usuario

TROUBLESHOOTING

SYMPTOM
Motor will not start
Motor will not start;
fuses blown or circuit
breakers are tripped
Motor fails to
develop full power
(power output of
motor decreases
rapidly with decrease
in voltage at motor
terminals)
Motor overheats
Motor stalls
(resulting in blown
fuses or tripped
circuit breakers)
Machine slows down
while operating
Abrasive belt runs
off top wheel
POSSIBLE CAUSE(S)
1. Low voltage
2. Open circuit in motor
or loose connections
3. Defective switch
4. Defective capacitor
1. Short circuit in line cord or plug
2. Short circuit in motor
or loose connections
3. Incorrect fuses or circuit
breakers in power line
1. Power line overloaded with lights,
appliances and other motors
2. Undersize wires or circuits too long
3. General overloading of power
company's facilities
Motor overloaded
1. Short circuit in motor
or loose connections
2. Low voltage
3. Incorrect fuses or circuit
breakers in power line
4. Motor overload
Applying too much pressure
to workpiece
Not tracking properly
POSSIBLE CAUSE(S)
1. Check power line for proper voltage
2. Inspect all lead connections on motor for loose
or open connection
3. Have switch replaced by a qualified service dealer
4. Have capacitor replaced by a qualified
service dealer
1. Inspect line cord or plug for damaged insulation
and shorted wires
2. Inspect all lead connections on motor for loose
or shorted terminals or worn insulation on wires
3. Install correct fuses or circuit breakers
1. Reduce the load on the power line
2. Increase wire sizes, or reduce length of wiring
3. Request a voltage check from the power company
Reduce load on motor
1. Inspect connections in motor for loose or shorted
terminals or worn insulation on lead wires
2. Correct the low line voltage conditions
3. Install correct fuses or circuit breakers
4. Reduce load on motor
Ease up on pressure
See 'Adjusting Belt Tracking' in Operation section
9