How To Repair Electric Motor Pdf

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.

How to repair electric motor pdf.

Electricity is passed to the windings in the armature via carbon brushes. The bearings allow the shaft or rotor assembly to turn freely and smoothly in the frame. You can service wiring connections bearings and. This is part 3 of a ser.

Given the sheer number of different motors and winding patterns the rewinding process can vary greatly. This advancing magnetic field gives the rotor something to chase causing the rotor to spin. Both mechanical and electrical test equipment and tools are discussed with detailed how to. Many electric motor failures are caused by bearing failures.

Electric motor test repair guide. All electric motors contain copper windings on the armature and magnets that are fixed to the outer casing. Ac motors are generally reliable and last a long time before needing to be replaced. This motor is a baldor cl3509 1 hp 3450 rpm electric motor.

Begin to check the bearings of the motor. In this video i show how to test dismantle repair and reassemble a small ac motor patreon link. Fixing a dented fan shroud on the back of an electric motor. This electric motor repair shop procedures manual is for use by ima personnel engaged in electric motor repair.

This article describes a c electrical motor troubleshooting. If the internal windings burn out your ac motor needs to be checked out professionally. For maximum effectiveness this manual should be used as a supplement to any ongoing on the job training in the ima electrical repair shop. The only user serviceable parts on an ac motor are the brushes and the bearings.

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. The magnets repel the electrical energy and force the armature in the motor to rotate. 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.