Southbend SB1040, SB1041 owner manual Polarity on

For Machines Mfg. Since 8/09 TR O U B L E S H O OTI N G Model SB1040/SB1041

Symptom

Possible Cause

Possible Solution

Vibration when	1.	Loose or damaged blade.	1.	Tighten or replace blade.
operating or	2.	Worn wheel bearing.	2.	Check/replace wheel bearing.
cutting.

3.Wheels are not coplanar.3. Adjust wheels so they are parallel and aligned.

4.	Wheel tires worn or incorrectly	4.	Replace or dress rubber tires.
	installed.
5.	Bent or dull blade.	5.	Replace blade.
6.	Wheels out of balance.	6.	Replace wheels.
7.	Loose machine component.	7.	Tighten loose component.
8.	Belt has a high spot.	8.	Replace/adjust the V-belt.

9.Bandsaw blade wheel is bent or out 9. Check and replace for bad wheel or bearing. of balance.

Machine stalls	1.	Too much pressure when feeding	1.	Reduce pressure when feeding workpiece.
or slows when		workpiece.
operating.	2.	Motor is wired out of phase	2.	Swap two power incoming power leads (see Phase
		(SB1041 only).		Polarity on Page 20).

3.Workpiece is warped and binding 3. Fabricate a jig for better workpiece control. blade.

4.Blade is not correct for material 4. Use the correct blade for the operation. Refer to

	being cut.		Blade Selection section beginning on Page 24.
5.	Belt(s) slipping.	5.	Tension/replace belt(s); ensure pulleys are aligned.
6.	Motor overheated.	6.	Let cool, clean motor, and reduce workload.
7.	Run capacitor at fault (SB1040	7.	Test/repair/replace.
	only).

8.Pulley or sprocket slipping on shaft. 8. Replace pulley and key or set screw. Replace shaft

if worn.

9.Motor connection wired incorrectly. 9. Review wiring diagram on motor cover; correct wire connections.

10.Contactor has poor contacts.10. Test all legs for power, test field coil and replace if

at fault.

11.Centrifugal switch at fault (SB1040 11. Adjust/replace centrifugal switch if available. only).

12. Motor at fault.	12. Test for shorted windings, bad bearings and repair
	or replace.

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