SECTION 7: SERVICE
Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support at (570)
Troubleshooting
Motor & Electrical
Symptom | Possible Cause | Possible Solution | ||
Machine does not | 1. | EMERGENCY STOP button depressed/at | 1. | rotate button head to reset. Replace if at fault. |
start or a circuit |
| fault. |
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breaker trips. | 2. | Main power switch OFF or at faul. | 2. | turn main power switch ON or replace if at fault. |
| 3. | incorrect power supply voltage or circuit | 3. | Ensure correct power supply voltage and circuit |
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| size. |
| size. |
| 4. | power supply circuit breaker tripped or fuse | 4. | Ensure circuit is sized correctly and free of shorts. |
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| blown. |
| Reset circuit breaker or replace fuse. |
| 5. | Motor wires connected incorrectly. | 5. | Correct motor wiring connections. (Page 87). |
| 6. | thermal overload relay has tripped. | 6. | reset; adjust trip load dial if necessary; replace. |
| 7. | Contactor not energized/has poor contacts. | 7. | test all legs for power/replace if at fault. |
| 8. | Wiring is open/has high resistance. | 8. | Check/fix broken, disconnected, or corroded wires. |
| 9. | Motor is at fault. | 9. | test/repair/replace. |
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Motor stalls or is | 1. | gearbox at fault. | 1. | select appropriate gear ratio; replace broken or |
underpowered. |
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| slipping gears. |
| 2. | Belt(s) slipping. | 2. | tension/replace belt(s); ensure pulleys are aligned. |
| 3. | Motor wired incorrectly. | 3. | Wire motor correctly. |
| 4. | Motor bearings at fault. | 4. | test/repair/replace. |
| 5. | Motor overheated. | 5. | Clean motor, let cool, and reduce workload. |
| 6. | Contactor not energized/has poor contacts. | 6. | test all legs for power/replace if at fault. |
| 7. | Motor overheated. Contactor not energized/ | 7. | Clean motor, let cool, and reduce workload. Test all |
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| has poor contacts. |
| legs for power/replace if at fault. |
| 8. | Motor at fault. | 8. | test/repair/replace. |
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Loud, repetitious | 1. | pulley set screws or keys are missing or | 1. | inspect keys and set screws. Replace or tighten if |
noise coming from |
| loose. |
| necessary. |
lathe at or near the | 2. | Motor fan is hitting the cover. | 2. | tighten fan, shim cover, or replace items. |
motor. |
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Motor overheats. | 1. | Motor overloaded. | 1. | allow motor to cool; reduce load on motor. |
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Motor is loud when | 1. | Excessive depth of cut or feed rate. | 1. | decrease depth of cut or feed rate. |
cutting, or bogs | 2. | spindle speed or feed rate wrong for | 2. | refer to the feeds and speed charts in Machinery's |
down under load. |
| cutting operation. |
| Handbook or a speeds and feeds calculator on the |
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| internet. |
| 3. | Cutting tool is dull. | 3. | sharpen or replace the cutting tool. |
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Model G0746/G0749 (Mfg. Since 3/13) |
