Southbend SB1027 owner manual Symptom Possible Cause Possible Solution

Model SB1027TROU B LESHOOTI NG For Machines Mfg. Since 8/09

If you need replacement parts, or if you are unsure how to do any of the solutions given here, feel free

to call us at (360) 734-1540. !

Symptom

Possible Cause

Possible Solution

Machine does not	1.	Emergency stop button is pushed in	1.	Rotate the button clockwise until it pops out;
start or a breaker		or is at fault.		replace if necessary.
trips.	2.	Main power switch not turned ON.	2.	Make sure the electrical box door is closed and
				securely latched, then turn the main power switch
				ON.

3.Plug/receptacle is at fault or wired 3. Test for good contacts; correct the wiring. incorrectly.

4.Power supply is switched OFF or is 4. Ensure hot lines have correct voltage on all legs and

	at fault.		main power supply is switched ON.
5.	Main power switch is at fault.	5.	Replace the main power switch.
6.	Motor connection wired incorrectly.	6.	Correct motor wiring connections (Page 59).
7.	ON button or spindle direction	7.	Replace faulty ON button or spindle direction
	switch at fault.		switch.
8.	Motor windings or motor is at fault.	8.	Replace motor.
Machine stalls or is 1.	Machine is undersized for the task.	1.	Use smaller sharp tooling; reduce the feed rate;
overloaded.			reduce the spindle speed; use coolant.

2.Workpiece alignment is poor. 2. Eliminate workpiece binding; use vise or clamps as required for proper workpiece alignment control.

3.Dull or incorrect cutting tool. 3. Use sharp and correct cutting tool for the operation.

4.Spindle speed is incorrect for the 4. Select appropriate spindle speed (Page 34). operation.

5.Motor connection wired incorrectly. 5. Correct motor wiring connections (Page 59).

6.Plug/receptacle is at fault or wired 6. Test for good contact; correct wiring problems;

incorrectly; incorrect voltage	ensure hot lines have correct voltage on all legs.
coming from power source.
7. Pulley(s) slipping on shaft.	7. Replace loose pulley/shaft.

8.Motor bearings at fault.8. Test by rotating shaft; rotation grinding/loose shaft requires bearing replacement.

	9.	Motor has overheated.	9.	Clean off motor, let cool, and reduce workload.
	10.	Motor is at fault.	10.	Replace motor.
Machine has	1.	Tool holder or cutter is at fault.	1.	Replace out-of-round tool holder; replace/re-sharpen
vibration or noisy				cutter; use appropriate feed rate spindle speed.
operation.	2.	Workpiece alignment is poor.	2.	Eliminate workpiece binding; use vise or clamps as
				required for proper workpiece alignment control.

3.Motor or component is loose. 3. Inspect replace stripped or damaged bolts/nuts and re-tighten with thread locking fluid.

4. Pulley is loose.	4. Re-align/replace shaft, pulley, set screw, and key as
	required.

5.Machine is incorrectly mounted to 5. Re-tighten/replace mounting bolts in floor; relocate/

	floor or sits uneven.		shim machine.
6.	Motor fan is rubbing on fan cover.	6.	Replace dented fan cover or fan.
7.	Pulley(s) slipping on shaft.	7.	Replace loose pulley/shaft.

8.Motor bearings at fault.8. Test by rotating shaft; rotation grinding/loose shaft requires bearing replacement.

9. Gearbox is at fault. 9. Rebuild gearbox for bad gear(s)/bearing(s).

-54-