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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)
Symptom
Possible Cause
Possible Solution
Machine does not | 1. Power supply switched off/has | 1. Switch power supply on/verify voltage. |
start. | incorrect voltage. |
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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.
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
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| 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 | |
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| or replace. | |
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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 | ||
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| power supply circuit. | |
| 3. | Power supply has incorrect voltage | 3. | Contact your power company to fix the power | |
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| on one or more legs. |
| supply. | |
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Machine operates | 1. | Power connections wired out of | 1. | Swap two power incoming power leads (see Page | |
in reverse. |
| phase (SB1022 only). |
| 47). | |
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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. | 3. | Tighten | |||
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| 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. |
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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) |
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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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