How To Repair Electric Motor Pdf

Fixing a dented fan shroud on the back of an electric motor.

How to repair electric motor pdf.

Ac motors are generally reliable and last a long time before needing to be replaced. This is part 3 of a ser. This article describes a c electrical motor troubleshooting. Electric motors are relatively simple mechanical devices but rewinding them isn t in fact it s one project that s usually best left to the professionals.

The only user serviceable parts on an ac motor are the brushes and the bearings. Electricity is passed to the windings in the armature via carbon brushes. Both mechanical and electrical test equipment and tools are discussed with detailed how to. You can service wiring connections bearings and.

I cover the symptoms and how to fix three of the most common motor problems for dc and ac motors found in power tools and appliances. In this video i show how to test dismantle repair and reassemble a small ac motor patreon link. Electric motor test repair guide. For maximum effectiveness this manual should be used as a supplement to any ongoing on the job training in the ima electrical repair shop.

Capacitor start electric motors use a starting coil and a capacitor to create an advancing magnetic field in the stator outer frame of the motor with its coils. Bearings are located at both ends of the motor which are sometimes called bell housings or end bells. Given the sheer number of different motors and winding patterns the rewinding process can vary greatly. Many electric motor failures are caused by bearing failures.

This motor is a baldor cl3509 1 hp 3450 rpm electric motor. If the internal windings burn out your ac motor needs to be checked out professionally. Begin to check the bearings of the motor. This electric motor repair shop procedures manual is for use by ima personnel engaged in electric motor repair.

However it generally involves. All electric motors contain copper windings on the armature and magnets that are fixed to the outer casing. This advancing magnetic field gives the rotor something to chase causing the rotor to spin.