Southbend SB1021, SB1022 manual Troubleshooting, Symptom Possible Cause Possible Solution

Model SB1021/SB1022 T R O U B L E S H O O T I N G For Machines Mfg. Since 8/09

Troubleshooting

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. Power supply switched off/has	1. Switch power supply on/verify voltage.
start.	incorrect voltage.

2.Blown fuse/tripped circuit breaker 2. Correct the cause of overload, then reset/replace

at main panel. fuse or breaker.

3.Plug or receptacle is corroded or 3. Clean/retighten contacts; correct the wiring. mis-wired.

4.Thermal overload relay has tripped. 4. Allow relay/motor to cool. If necessary, press reset button inside switch.

5.Break or short in wiring; or loose 5. Trace/replace broken or corroded wires; fix loose

connections.	connections.
6. Motor ON/OFF switch at fault.	6. Replace switch.

7.Motor connection wired incorrectly. 7. Wire motor correctly (refer to inside junction box cover or manual).

8. Start capacitor blown or at fault. 8. Replace start capacitor.

9.Contactor not energized/has poor 9. Test all legs for power, test field coil and replace if

		contacts.		at fault.
	10.	Centrifugal switch at fault.	10.	Adjust/replace centrifugal switch.
	11.	Motor at fault.	11.	Test for shorted windings, bad bearings and repair
				or replace.
Main motor	1.	Extension cord (if used) is causing	1.	Move machine closer to the power source or use a
chatters during		voltage drop.		larger gauge or shorter extension cord.
startup or during	2.	Phase converter (if used) wild wire	2.	Connect wild wire to the machine power supply
operation.
		connected wrong.		terminal that is not part of the contactor field coil
				power supply circuit.
	3.	Power supply has incorrect voltage	3.	Contact your power company to fix the power
		on one or more legs.		supply.
Machine operates	1.	Power connections wired out of	1.	Swap two power incoming power leads (see Page
in reverse.		phase (SB1022 only).		47).
Machine has	1.	Motor fan rubbing on fan cover.	1.	Fix/replace fan cover; replace loose or damaged fan.
excessive vibration	2.	Motor or table is loose.	2.	Tighten any loose fasteners.
or noise.
	3.	V-belt(s) loose.	3.	Tighten V-belt(s).
	4.	Guide post lock lever is loose.	4.	Tighten the lock lever.

5.Machine incorrectly mounted on 5. Level/shim base; tighten/adjust mounting hardware

floor. or feet.

6.V-belt(s) worn or damaged.6. Replace V-belt(s). Use link belts if possible.

7.Pulley loose or not in alignment; 7. Replace worn pulley, key, and shaft, and realign. shaft bent.

8. Centrifugal switch out of	8. Adjust/replace centrifugal switch.
adjustment; at fault (SB1021 only)

9.Motor bearings worn or damaged. 9. Replace motor bearings or replace motor.

10.Phase converter (if used) wild wire 10. Connect wild wire to correct leg (must avoid

incorrectly connected (SB1022	transformer or sensitive electronics).
only).

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