TROUBLESHOOTING
SYMPTOM |
| POSSIBLE CAUSE | CORRECTIVE ACTION | ||
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Lines across width of work- | 1. | Sanding belt seam is open or dam- | 1. | Repair or replace sanding belt. | |
piece. |
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| aged. |
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More material is removed | 1. | Workpiece is not supported as it | 1. | Hold workpiece up with your hands as it comes out, or set up an out- | |
from the end of workpiece |
| comes out of sander. |
| feed table for your workpiece after it comes out. | |
than the length (snipe). | 2. | Pressure rollers not set correctly. | 2. | Set pressure rollers as described in Section 8: Service Adjustments. | |
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Glossy spots or streaks on | 1. | Worn sanding belt. | 1. | Replace sanding belt. | |
workpiece. |
| 2. | Rear pressure roller too low. | 2. | Raise rear pressure roller. (See warning in Pressure Roller sec- |
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Sanding belt clogs quickly. | 1. | Sanding belt grit too small for par- | 1. | Replace with a coarser grit sanding belt. | |
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| ticular job. |
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| 2. | Excessive depth of cut. | 2. | Reduce depth of cut. |
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| 3. | Wood is too moist. | 3. | Allow wood to dry out. |
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Sanding belt does not ten- | 1. | Low air pressure. | 1. | Adjust air pressure to 75 PSI at primary regulator. | |
sion correctly; rollers slip | 2. | Air leaks in system. | 2. | Inspect all hoses and connections for leaking air; use water on sus- | |
under belt. |
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| pected area to detect bubbles. |
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Sanding belt runs off to one | 1. | Air eye fork clogged. | 1. | Clean the intake hole on the air eye fork. | |
side, stopping the sander. | 2. | Oscillation return valve closed. | 2. | Open valve. | |
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| 3. | Oscillation timing incorrect. | 3. | Adjust oscillation timing. |
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Sanding belt will not start. | 1. | Sanding belt is not tensioned. | 1. | Tension sanding belt. | |
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| 2. | Limit switches engaged. | 2. | Center sanding belt so it is not touching the limit switches. |
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| 3. | Emergency stop plate engaged. | 3. | Make sure emergency stop switch is released. |
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Poor, | 1. | Platen adjusted incorrectly, above | 1. | Adjust platen on the same plane as, or lower than, bottom surface | |
ing results. |
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| bottom surface level of lower sand- |
| level of lower rollers. |
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| ing rollers. |
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| 2. | Sanding belt loaded with sawdust. | 2. | Clean sanding belt to unload sawdust. |
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| 3. | Sanding belt worn out. | 3. | Replace sanding belt with a new one. |
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Conveyor belt not | tracking | 1. | Conveyor rollers moved out of | 1. | |
in center. |
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| adjustment. |
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Conveyor belt slipping. | 1. | Conveyor rollers have incorrect | 1. | Adjust conveyor rollers to increase tension. | |
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| tension. |
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| 2. | Conveyor rollers contaminated with | 2. | Clean conveyor rollers. |
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| dirt or dust. |
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Emergency brake | stops | 1. | Air pressure incorrect. | 1. | Adjust air pressure to 75 PSI. |
slow. |
| 2. | Air leak in system. | 2. | Find and fix air leaks. |
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| 3. | Brake rotor contaminated with oil. | 3. | Clean brake rotor with automotive brake parts cleaner. |
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| 4. | Brake pads worn out. | 4. | Replace brake pads. |
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Grinding noise when brak- | 1. | Brakes severely worn out. | 1. | Replace brake pads, have rotor turned (possibly replaced). | |
ing. |
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For your safety, turn switch OFF and dis- connect the machine from power source before any troubleshooting. Please refer to the adjustment section to make correc- tions.
G9983 15" |
