For Machines Mfg. Since 8/09

TROUBLESHOOTING

Model SB1020

Symptom

Possible Cause

Possible Solution

!

Motor stalls

1.

Too much pressure when feeding

1.

Reduce pressure when feeding workpiece.

or slows when

 

workpiece.

 

 

 

operating.

2.

Workpiece is warped and binding

2.

Fabricate a jig for better workpiece control.

 

 

 

blade.

 

 

 

 

3.

Blade is dull, wanders, and gets

3.

Replace blade, adjust guides and tracking.

 

 

pinched in the cut.

 

 

 

 

4.

Blade is loose.

4.

Clean wheels and increase blade tension.

 

5.

Blade is loading up.

5.

Install a blade with more suitable TPI or different

 

 

 

 

style of teeth.

6.Blade is not correct for material 6. Use the correct blade for the operation. Refer to

being cut.

Blade Selection section beginning on Page 24.

7. Motor overheated.

7. Let cool, clean motor, and reduce workload.

8.Motor wired incorrectly.8. Review wiring diagram on motor cover; correct wire connections.

 

9.

Motor at fault.

9.

Test for shorted windings, bad bearings and repair

 

 

 

 

or replace.

 

 

 

 

 

 

 

 

 

 

Workpiece angle

1.

Scale not calibrated or loose vise.

1.

Zero fence to blade and realign scale. Tighten any

incorrect or out of

 

 

 

loose fasteners.

square.

2.

Blade guides are loose or out of

2.

Tighten any loose hardware or lock levers. Align the

 

 

 

alignment.

 

blade guides (see Page 28).

 

 

 

 

 

 

 

 

 

 

Blade tracks

1.

Blade tension is too loose.

1.

Increase blade tension (see Page 24).

incorrectly, slips on

2.

Incorrect blade for bandsaw.

2.

Install correct blade for machine (see Page 24).

wheels, or comes

3.

Feed rate is too fast.

3.

Reduce feed rate, or decrease blade TPI.

off wheels.

 

4.

Blade guides need adjustment.

4.

Adjust blade guides (see Page 40).

 

5.

Blade is bell-mouthed.

5.

Install new blade, and regularly remove tension

 

 

 

 

from blade when not in use.

6.Blade is dull, wanders, and gets 6. Replace blade, re-secure the workpiece from

pinched in the cut.

shifting.

7. Wheels are loaded with metal

7. Clean wheels.

shavings.

 

8.The blade has insufficient support. 8. Tighten the blade guide as close to the workpiece as possible (not less than 14").

-35-

Page 37
Image 37
Southbend SB1020 owner manual Blade Selection section beginning on