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10.0 Troubleshooting DSAN4-series Abrasive Notchers
Table 3
Symptom
Motor will not start.
Motor will not start:
fuses blow or circuit
breakers trip.
Motor overheats.
Motor stalls, or doesn't
build to normal
operating speed.
Frequent start
capacitor failure.
Poor notching or
grinding performance.
Excessive vibration or
noise.
*Warning: Some corrections may require a qualified electrician.
Possible Cause
Low voltage.
Open circuit in motor or loose
connection.
On/Off switch failure.
Centrifugal switch failure (won't close
to activate start capacitor).
Run capacitor failure.
Motor fault.
Short circuit in line cord or plug.
Short circuit in motor or loose
connections.
Incorrect fuses or circuit breakers in
power line.
Motor overloaded.
Air circulation through motor is
restricted.
Prolonged operation.
Motor fault.
Motor overloaded.
Short circuit in motor or loose
connections.
Low voltage.
Incorrect fuses or circuit breakers in
power line.
Motor fault.
Centrifugal switch failure (won't open
to disengage capacitor, thus causing
constant energizing and premature
wear of capacitor).
Abrasive belt slipping on
roller/wheel.
Machine not level on floor.
Loose motor fan.
Motor imbalance.
Correction*
Check power line for proper voltage.
Inspect all lead connections on motor for
loose or open connections.
Inspect switch, replace if needed.
Replace centrifugal switch.
Replace run capacitor.
Have motor tested by qualified personnel.
Inspect cord or plug for damaged
insulation and shorted wires.
Inspect all connections on motor for loose
or shorted terminals or worn insulation.
Install correct fuses or circuit breakers.
Reduce pressure of material against
abrasive belt.
Clean motor fan with compressed air to
restore normal air circulation.
Allow machine to cool.
Have motor tested by qualified personnel.
Reduce pressure of material against
abrasive belt.
Inspect connections on motor for loose or
shorted terminals or worn insulation.
Correct the low voltage conditions.
Install correct fuses or circuit breakers.
Have motor tested by qualified personnel.
Replace centrifugal switch.
Tighten belt.
Level machine; use shims if needed.
Inspect and tighten.
Have motor tested by qualified personnel.
11
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