18
Troubleshooting
Fault |
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| Probable cause |
| Suggested remedy |
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Motor will not run | 1. Motor is defective | 1. | Replace the motor. | ||||
| 2. | Voltage is too low | 2. | Check the power supply for the proper | |||
| 3. | Switch is defective |
| voltage. | |||
| 3. | Replace the switch. | |||||
| 4. | Branch circuit fuse is blown or | 4. Determine the reason for the blown fuse | ||||
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| the circuit breaker is tripped |
| or tripped circuit breaker | ||
| 5. | Branch is shut down for service |
| the fuse or reset the breaker. | |||
| 5. | Check all personnel and machines on | |||||
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| the branch to be certain someone has | ||
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| not shut down the branch for service. DO | ||
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| NOT replace the fuse or reset the breaker | |||
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| unless you are certain no personnel are | ||
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| working on the machines, wires or con | ||
| 6. | Open circuit in the wiring |
| trols in the circuit. | |||
| 6. Inspect all the wire connections for loose | ||||||
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| or open connections. | ||
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Motor stalls easily | 1. Low voltage. | 1. | Check for proper voltage at the motor | ||||
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| 2. |
| Fuse is blown (three phase | 2. | Replace the blown fuse. | ||
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| motors only.) | 3. | Check for proper connections. | ||
| 3. |
| Improper wiring. | ||||
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Abrasive belt or disc slows |
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down although motor keeps | 1. Belt is slipping | 1. Replace the belt. | |||||
running at working speed |
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Poor tracking | 1. |
| Tracking is out of adjustment. | 1. | Adjust the belt tracking. | ||
| 2. |
| Too much belt tension. | 2. | Loosen the tension until the belt is just | ||
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| taut. | ||
| 3. |
| Not enough belt tension. | 3. | Tighten the tension until the belt is more | ||
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| taut. | ||
| 4. |
| Belt is jointed improperly. | 4. | Check the belt for an irregular seam or | ||
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| shape. | ||
| 5. |
| Lack of crown on the drive roller. | 5. | Remove the belt and put a straight edge | ||
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| along the drive roller. There should be a | ||
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| slight crown (high spot toward the middle | ||
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| of the roller.) If the crown has worn away, | ||
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| replace the roller. | ||
| 6. |
| Worn bearings. | 6. Check all the bearings for excessive heat | |||
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| or loose shafts. Replace if necessary. | ||
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Unsteady belt | 1. | Slack in the abrasive belt. | 1. | Adjust the belt tension. | |||
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Short belt life | 1. | Excessive pressure applied while | 1. | Allow the belt to do the cutting. Excessive | |||
| grinding. |
| pressure only dulls the grit and removes it | ||||
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| from the cloth. | ||
| 2. | Working on only one side of the belt | 2. | Use all the surface areas of the abrasive | |||
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| or only in one area of the disc. |
| cloth. | |||
| 3. | Incorrect abrasive material or grit | 3. | Check with your abrasives supplier for rec | |||
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| size. |
| ommendations on the type and coarse | |||
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| ness of the abrasive required for the | ||
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| workpieces you are sanding or grinding. |
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CAUTION: For all of the electrical faults and corrections in the above table Wilton recommends the use of a qualified and licensed electrician for all circuit tracing, diagnosis and repair.