Troubleshooting - PowerTec BS900 Owner's Manual

8
SYMPTON
Motor will not start
Motor stalls or fails to
reach full speed
Motor overheats
Machine slows down
while operating
Excessive vibration
Rough cuts
Crooked cuts
Excessive blade
breakage

TROUBLESHOOTING

POSSIBLE CAUSE(S)
1. Low voltage
2. Short circuit in line cord or plug
3. Short circuit in motor
4. Open circuit or loose connection in
motor
5. Incorrect fuses or circuit breakers
6. Defective switch
7. Defective capacitor
1. Power overload
2. Low voltage from power supply
3. Undersized line cord
4. Motor overload
5. Short circuit or loose connection in
motor
6. Incorrect fuses or circuit breakers
Motor overloaded
Applying too much pressure during
operation
1. Band saw not mounted securely to
stand
2. Uneven stand surface
3. Worn belt
4. Pulley not aligned
5. Loose or damage blade
1. Too much feed
2. Coarse blade
1. Feed too fast
2. Blade is dull
3. Loose blade guide assembly or
blade thrust bearing
4. Upper blade guide too far from
workpiece
5. Workpiece not in square position
1. Bad weld on blade
2. Force wide blade for small radius
3. Dull blade
4. Upper blade guide too high
5. Blade not tensioned properly
6. Improper blade wheel tracking
SOLUTIONS
1. Check power supply for proper voltage
2. Inspect line cord and plug for faulty insulation
or shorted connection
3. Inspect connection on motor.
4. Inspect connection on motor
5. Replace with correct fuses or circuit breakers
6. Replace switch
7. Replace capacitor
1. Reduce workload on the power supply
2. Check power supply for proper voltage
3. Use line cord of adequate size or reduce length
of wiring
4. Reduce load on motor
5. Inspect the connection in motor for loose or
shorted connection
6. Replace with correct fuses or circuit breakers
Reduce load on motor. Turn off the machine until
motor cools down
Ease up on pressure
1. Tighten band saw to stand
2. Level stand
3. Replace belt
4. Adjust pulley
5. Tighten or replace blade
1. Reduce feed
2. Replace with fine blade
1. Reduce feed rate
2. Replace blade
3. Tighten blade thrust bearing with in 0.016" be
hind blade back
4. Adjust blade guide to a proper position
5. Use miter gauge or tilt table to 90 °
1. Replace blade
2. Replace to a narrow blade
3. Replace blade
4. Adjust blade guide
5. Tighten blade tension
6. Adjust blade tracking