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Troubleshooting
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Lines | across | width | 1. | Sanding belt seam is open or damaged. | 1. | Repair or replace sanding belt. | |
of workpiece. |
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Glossy |
| spots | 1. | Worn sanding belt. | 1. | Replace sanding belt. | |
or | streaks | on | 2. | Rear pressure roller too low. | 2. | Raise rear pressure roller. (See warning in Pressure | |
workpiece. |
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| Roller section, Page 18!) | ||
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Sanding | belt | clogs | 1. | Sanding belt grit too small for particular job. | 1. | Replace with a coarser grit sanding belt. | |
quickly. |
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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 | 1. | Low air pressure. | 1. | Adjust air pressure to 75 PSI at primary regulator. | |
not tension correct- | 2. | Air leaks in system. | 2. | Inspect all hoses and connections for leaking air; use water | |||
ly; rollers slip under |
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| on suspected area to detect bubbles. | |||
belt. |
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Sanding | belt | runs | 1. | Air eye fork clogged. | 1. | Clean the intake hole on the air eye fork. | |
off to one side, stop- | 2. | Oscillation return valve closed. | 2. | Open valve. | |||
ping the sander. | 3. | Oscillation timing incorrect. | 3. | Adjust oscillation timing. | |||
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Sanding belt will not | 1. | Sanding belt is not tensioned. | 1. | Tension sanding belt. | |||
start. |
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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. | Worn sanding belt. | 1. | Replace sanding belt with a new one. | |||
sive |
| sanding | 2. | Sanding belt loaded with sawdust. | 2. | Clean sanding belt to unload sawdust. | |
results. |
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Conveyor belt not | 1. | Conveyor rollers moved out of adjustment. | 1. | ||||
tracking in center. |
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Conveyor | belt slip- | 1. | Conveyor rollers have incorrect tension. | 1. | Adjust conveyor rollers to place more tension on the | ||
ping. |
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| workpiece. |
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| 2. | Conveyor rollers contaminated with dirt or dust. | 2. | Clean conveyor rollers. |
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Emergency | brake | 1. | Air pressure incorrect. | 1. | Adjust air pressure to 75 PSI. | ||
stops 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 | 1. | Brakes severely worn out. | 1. | Replace brake pads, have rotor turned (possibly | |||
braking. |
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For your safety, turn the power switch off and dis- connect the sander from the power source and the air supply before starting the applicable troubleshooting.
G0486/G0487 Wide Belt Sander |