14.2Mechanical and Electrical Problems
Table 6
Trouble
Machine will not start/restart or repeatedly trips circuit breaker or blows fuses.
Probable Cause | Remedy | |
|
| |
| Verify machine is connected to power | |
No incoming power. | source, and safety key is installed on | |
| switch. | |
|
| |
Cord damaged. | Replace cord. | |
|
| |
| Reset overload by pushing in | |
Overload automatic reset has not been | completely the OFF (red) button on the | |
magnetic switch. Allow a few minutes | ||
reset. | ||
for machine to cool. If problem persists, | ||
| ||
| check amp setting on motor starter. | |
|
| |
| One cause of overloading trips which | |
| are not electrical in nature is too heavy | |
| a cut. The solution is to reduce feed | |
| pressure into the blade. If too heavy a | |
Band Saw frequently trips. | cut is not the problem, then check the | |
amp setting on the overload relay. | ||
| ||
| Match the full load amps on the motor | |
| as noted on the motor plate. If amp | |
| setting is correct, there is probably a | |
| loose electrical lead. | |
|
| |
| Verify that band saw is on a circuit of | |
Building circuit breaker trips or fuse | correct size. If circuit size is correct, | |
blows. | there is probably a loose electrical lead. | |
| Check amp setting on motor starter. | |
|
| |
| If you have access to a voltmeter, you | |
| can separate a starter failure from a | |
| motor failure by first, verifying incoming | |
| voltage at | |
| checking the voltage between starter | |
Switch or motor failure (how to | and motor at | |
distinguish). | voltage is incorrect, you have a power | |
| supply problem. If voltage between | |
| starter and motor is incorrect, you have | |
| a starter problem. If voltage between | |
| starter and motor is correct, you have a | |
| motor problem. | |
|
| |
| Clean motor of dust or debris to allow | |
Motor overheated. | proper air circulation. Allow motor to | |
cool down before restarting. | ||
|
| |
| If electric motor is suspect, you have | |
| two options: Have a qualified electrician | |
Motor failure. | test the motor for function or remove the | |
| motor and take it to a qualified electric | |
| motor repair shop for testing. | |
|
| |
| Double check to confirm all electrical | |
Miswiring of unit. | connections are correct. Refer to wiring | |
diagram to make any needed | ||
| ||
| corrections. | |
|
|
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