M1102/M1103
SERVICE
Troubleshooting
This section covers the most common problems and corrections with this type of machine. WARNING! DO NOT make any adjustments until power is disconnected and moving parts have come to a complete stop!
Motor & Electrical
Symptom | Possible Cause | Possible Solution |
Machine does not | 1. Plug or receptacle is at fault or wired incor- | 1. Test power plug and receptacle for good contact |
start or a breaker | rectly. | and correct wiring. |
trips. | 2. Start capacitor is faulty. | 2. Replace capacitor. |
| 3. Motor connection is wired incorrectly. | 3. Correct motor wiring (see Page 32). |
| 4. Power supply is faulty, or is switched OFF. | 4. Make sure all hot lines and grounds are operational |
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| and have correct voltage on all legs. |
| 5. Safety switch key is at fault. | 5. Install or replace safety key, or replace switch |
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| assembly. |
| 6. ON/OFF switch is faulty. | 6. Replace faulty switch. |
| 7. Cable or wiring is open or has high resistance. | 7. Troubleshoot wires for internal or external breaks, |
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| check for disconnected or corroded connections and |
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| repair or replace wiring. |
| 8. Motor is at fault. | 8. Test, repair or replace motor. |
Machine stalls or | 1. Incorrect spindle speed for task. | 1. Decrease spindle speed. |
is underpowered. | 2. Machine is undersized for the task. | 2. Use smaller drill bits/cutters and reduce the feed |
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| rate and spindle speed. |
| 3. Bit or cutter is dull. | 3. Sharpen/replace bit or cutter. |
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| 4. Make sure hot lines and grounds are operational w/ |
| 4. Low power supply voltage. | correct voltage. |
| 5. Belt(s) is slipping. | 5. Replace bad belts, align pulleys, and |
| 6. Plug or receptacle is at fault. | 6. Test power plug and receptacle for good contact |
|
| and correct wiring. |
| 7. Motor connection is wired incorrectly. | 7. Correct motor wiring (see Page 32). |
| 8. Pulley is slipping on shaft. | 8. Replace loose pulley and shaft. |
| 9. Motor bearings are at fault. | 9. Rotate motor shaft for noisy or burnt bearings, |
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| repair/replace as required. |
| 10. Motor has overheated. | 10. Clean inside/outside of motor, let cool, and |
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| reduce workload on machine. |
| 11. Motor is at fault. | 11. Test, repair or replace motor. |
SERVICE
Continued on next page
