Motor
NOTE: Motors used on wood working tools are particularly susceptible to the accumu- lation of sawdust and wood chips and should be blown out or “Vacuumed” frequently to prevent interference with normal motor ventilation.
Trouble |
| Probable Cause |
| Remedy |
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Excessive Noise | 1. | Motor | 1. | Have motor checked by qualified |
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| service technician. Repair ser- |
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| vice is available at your nearest |
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| Authorized Service Center. |
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Motor fails to | 1. | Circuit overloaded with lights, | 1. | Do not use other appliances or |
develop full |
| appliances and other motors. |
| motors on same circuit when |
power. NOTE: | 2. | Wiring circuit (extension cord) |
| using the saw. |
Low Voltage: |
| too long or undersize. | 2. | Increase wire sizes, or reduce |
(Power output of |
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| length of circuit. See “Motor |
motor decreases |
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| Specifications and electrical |
rapidly with | 3. | General overloading of power |
| Requirements” section. |
decrease in volt- |
| company facilities. (In some | 3. | Request a voltage check from |
age at motor ter- |
| sections of the country, |
| the power company. |
minals. |
| demand for electrical power |
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| may exceed the capacity of |
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| existing generating and distri- |
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| bution systems.) |
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| 4. | Incorrect fuses or circuit |
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| breakers in power line. | 4. | Install correct fuses or circuit |
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| breakers. |
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Motor starts | 1. | Low voltage. | 1. | Request voltage check from the |
slowly or fails to |
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| power company. |
come up to full | 2. | Windings burned out or open. | 2. | Have motor repaired or replaced. |
speed |
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Motor overheats | 1. | Motor overloaded | 1. | Feed work slower into blade. |
| 2. | Improper cooling. (Air circula- | 2. | Clean out sawdust to provide |
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| tion restricted through motor |
| normal air circulation through |
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| due to sawdust, accumulating |
| motor. See “Maintenance” and |
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| inside of saw.) |
| “Lubrication” section. |
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Motor stalls | 1. | Voltage too low to permit | 1. | Request voltage check from the |
(resulting in |
| motor to reach operating |
| power company. |
blown fuses or |
| speed. |
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tripped circuit | 2. | Fuses or circuit breakers do | 2. | Install proper size fuses or circuit |
breakers) |
| not have sufficient capacity. |
| breakers. |
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Frequent open- | 1. | Motor overloaded | 1. | Feed work slower into blade. |
ing of fuses or | 2. | Fuses or circuit breakers do | 2. | Install proper size fuses or circuit |
circuit breakers |
| not have sufficient capacity. |
| breakers. |
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Motor runs inter- | 1. Worn or damaged brushes | 1. | Replace brushes. See “Mainte- | |
mittently, sparks |
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| nance” section. |
excessively or |
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fails to start |
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