Thank you.hello there! Most problems with single-phase motors involve the centrifugal switch, thermal switch, or capacitor(s). If the problem is in the centrifugal switch, thermal switch, or capacitor, the motor is usually serviced and repaired. However, if the motor is more than 10 years old and less than 1 HP, the motor is usually replaced. If the motor is less than 1/8 HP, it is almost always replaced.
Begin to check the bearings of the motor.
Perform a check of the bearings.
Next, push and pull the shaft in and out of the frame
Check the windings for short circuiting to the frame.
Use an ohmmeter to check resistance value.
Check that the windings are not open or blown.
Check the start or run capacitor used for starting or running some motors, if equipped.
Check the rear bell housing of the motor.
Check the fan
Thanks.A single phase motor with no power (low current flow) indicates an open rotor, but I have not seen this in decades when copper bars were common.
Otherwise it is very much like a short across the line with no rotation.
Thanks.That appears to be a start capacitor which is generally a large value, was this the original?
Normally if the start winding/cap is faulty, a spin of the shaft at the same time as applying power would start the motor.
Thanks.Yes.
Thanks.You describe the symptoms as "loss of power", have you measured the current?
If the motor is not rotating or low RPM with zero torque & low current with full voltage, it is not the capacitor or start switch
Thanks.You connect it up ion the normal way.
I would guess that each coloured pairs are start and run winding, the one with the lowest resistance is the run, the higher, the (blue) start winding
Have you ever had the rotor out to see if in fact it has copper bars?
Thanks.hello there! Most problems with single-phase motors involve the centrifugal switch, thermal switch, or capacitor(s). If the problem is in the centrifugal switch, thermal switch, or capacitor, the motor is usually serviced and repaired. However, if the motor is more than 10 years old and less than 1 HP, the motor is usually replaced. If the motor is less than 1/8 HP, it is almost always replaced.
Begin to check the bearings of the motor.
Perform a check of the bearings.
Next, push and pull the shaft in and out of the frame
Check the windings for short circuiting to the frame.
Use an ohmmeter to check resistance value.
Check that the windings are not open or blown.
Check the start or run capacitor used for starting or running some motors, if equipped.
Check the rear bell housing of the motor.
Check the fan
could you take another picture of the specification plate, so I can show you how to calculate the horsepower
As Mr. @MaxHeadRoom asked you?Have you ever had the rotor out to see if in fact it has copper bars?
Thanks.Time to see your local transformer/motor specialist.
Thanks.As Mr. @MaxHeadRoom asked you?
By the way, thank you for following the instructions. You're a good kid!
Thanks.If it reads the same when operated it is toast. For the coil it can be seen visually for starters.
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