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Troubleshooting Sanding
PARTS
SYMPTOM |
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| POSSIBLE CAUSE | CORRECTIVE ACTION |
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Deep sanding grooves | or | 1. | Sanding belt/disc grit is too coarse for | 1. | Use a finer grit sanding belt/disc. | ||||
scars in workpiece. |
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| the desired finish. |
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| 2. | Workpiece sanded across the grain. | 2. | Sand with the grain. | ||
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| 3. | Too much sanding force on workpiece. | 3. | Reduce pressure on workpiece while sanding. | ||
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| 4. | Workpiece held still against the | 4. | Keep workpiece moving while sanding on the belt/disc. | ||
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| belt/disc. |
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Grains rub off the belt or | 1. | Sanding belt/disc has been stored in an | 1. | Store sanding belt/disc away from extremely dry or hot tem- | |||||
disc easily. |
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| incorrect environment. |
| peratures. | |||
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| 2. | Sanding belt/disc has been folded or | 2. | Store sanding belt/disc flat not folded or bent. | ||
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| smashed. |
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Sanding | surfaces | clogs | 1. | Too much pressure against belt/disc. | 1. | Reduce pressure on workpiece while sanding. | |||
quickly or burns. |
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| 2. | Sanding softwood. | 2. | Use different stock. Or, accept the characteristics of the stock | |||
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| and plan on cleaning/replacing belts frequently. | ||
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Burn marks on workpiece. | 1. | Using too fine of sanding grit. | 1. | Use a coarser grit sanding belt/disc. | |||||
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| 2. | Using too much pressure. | 2. | Reduce pressure on workpiece while sanding. | ||
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| 3. | Work held still for too long. | 3. | Do not keep workpiece in one place for too long. | ||
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Glazed sanding surfaces. |
| 1. | Sanding wet stock. | 1. | Dry stock properly before sanding. | ||||
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| 2. | Sanding stock with high residue. | 2. | Use different stock. Or, accept the characteristics of the stock | ||
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| and plan on cleaning/replacing belts/discs frequently. | ||
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Workpiece | frequently | gets | 1. | Not supporting the workpiece against | 1. | Use back stop to support workpiece. | |||
pulled out of your hand. |
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| the stop. |
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| 2. | Starting the workpiece on a leading | 2. | Start workpiece on a trailing corner. | ||
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| corner. |
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Motor will not start. |
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| 1. | Low voltage. | 1. | Check power line for proper voltage. | |||
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| 2. | Open circuit in motor or loose connec- | 2. | Inspect all lead connections on motor for loose or open con- | ||
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| tions. |
| nections. | ||
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Motor will not start; fuses | 1. | Short circuit in line cord or plug. | 1. | Inspect cord or plug for damaged insulation and shorted wires. | |||||
or circuit breakers blow. |
| 2. | Short circuit in motor or loose connec- | 2. | Inspect all connections on motor for loose or shorted terminals | ||||
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| tions. |
| or worn insulation. | ||
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| 3. | Incorrect fuses or circuit breakers in | 3. | Install correct fuses or circuit breakers. | ||
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| power line. |
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Motor overheats. |
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| 1. | Motor overloaded. | 1. | Reduce load on motor. | |||
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| 2. | Incorrect usage of machine. | 2. | Reduce the applied load on the machine. | ||
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| 3. | Air circulation through the motor | 3. | Clean out motor to provide normal air circulation. | ||
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Motor stalls (resulting | in | 1. | Short circuit in motor or loose connec- | 1. | Inspect connections on motor for loose or shorted terminals or | ||||
blown fuses or tripped |
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| tions. |
| worn insulation. | |||
circuit). |
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| 2. | Low voltage. | 2 | Correct the low voltage conditions. | ||
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| 3. | Incorrect fuses or circuit breakers in | 3. | Install correct fuses or circuit breakers. | ||
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| power line. |
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| 4. | Motor overloaded. | 4. | Reduce load on motor. | ||
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Machine slows when |
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| 1. | Applying too much pressure to work- | 1. | Sand with less | |||
operating. |
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| piece. |
| the work. | ||
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| 2. | Undersized circuit or using ext cord. | 2. | Make sure circuit wires are proper gauge & don’t use ext cords! | ||
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Machine vibrates |
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| 1. | Stand not stable on floor. | 1. | Secure stand to floor, reposition to level surface, or shim | |||
excessively. |
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| stand. | |||
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| 2. | Incorrect motor mounting. | 2. | Check/adjust motor mounting. | ||
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| 3. | Incorrect sanding belt tension. | 3. | Make sure tension lever is in tensioning position. Follow belt | ||
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| tensioning instructions in this manual. | ||
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| 4. | Weak or broken tension spring. | 4. | Replace spring. | ||
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| 5. | Idler roller is too loose. | 5. | Adjust idler roller. | ||
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| 6. | Broken/defective sanding belt/disc. | 6. | Replace sanding belt/disc. | ||
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