Mechanical and Electrical Problems
Problem
Uneven depth of cut side to side.
Board thickness does not match depth of cut scale.
Chain jumping.
Machine will not start/restart or repeatedly trips circuit breaker or blows fuses.
Possible Cause | Solution |
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Knife projection. | Adjust knife projection. |
Cutterhead not level with bed. | Level bed. |
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Depth of cut scale incorrect. | Adjust depth of cut scale. |
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Inadequate tension. | Adjust chain tension. |
Sprockets misaligned. | Align sprockets. |
Sprockets worn. | Replace sprockets. |
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No incoming power. | Verify unit is connected to power. |
Overload automatic reset has | When planer overloads on the circuit breaker |
not reset. | built into the motor starter, it takes time for the |
| machine to cool sown before restart. Allow unit |
| to adequately cool before attempting restart. If |
| problem persists, check amp setting on the |
| motor starter inside the electrical box. |
Planer frequently trips. | One cause of overloading trips which are not |
| electrical in nature is too heavy a cut. If too |
| deep a cut is not the problem, then check the |
| amp setting on the overload relays. Match the |
| full load amps on the motor as noted on the |
| motor plate. If amp setting is correct then there |
| is probably a loose electrical lead. Check amp |
| setting on motor starter. |
Building circuit breaker trips | Verify that planer is on a circuit of correct size. |
of fuse blows. | If circuit size is correct, there is probably a |
| loose electrical lead. Check amp setting on |
| motor starter. |
Loose electrical connections. | Go through all the electrical connections on |
| the planer including motor connections, |
| verifying the tightness of each. Look for any |
| signs of electrical arcing which is a sure |
| indicator of loose connections or circuit |
| overload. |
Motor starter failure. | Examine motor starter for burned or failed |
| components. If damage is found, replace |
| motor starter. If motor starter looks okay but is |
| still suspect, you have two options: have a |
| qualified electrician test the motor starter for |
| function, or purchase a new starter and |
| establish if that was the problem on |
| changeout. |
Motor starter failure. | If you have access to a voltmeter, you can |
| separate a starter failure from a motor failure |
| by first, verifying incoming voltage are 220 +/- |
| 20 and second, checking the voltage between |
| starter and motor at 220 +/- 20. If incoming |
| voltage is incorrect, you have a power supply |
| problem, If voltage between starter and motor |
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