How To Repair Electric Motor Pdf

Electric motor test repair guide.

How to repair electric motor pdf. 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. All electric motors contain copper windings on the armature and magnets that are fixed to the outer casing. Fixing a dented fan shroud on the back of an electric motor. Here we provide an electric motor diagnostic table a troubleshooting guide that helps diagnose and repair most electric motor problems for motors found on hvac equipment in buildings such as air conditioners furnace or air handler blower fans oil burner motors well pumps and condensate return.

You can service wiring connections bearings and. Ac motors are generally reliable and last a long time before needing to be replaced. Begin to check the bearings of the motor. Many electric motor failures are caused by bearing failures.

Given the sheer number of different motors and winding patterns the rewinding process can vary greatly. The magnets repel the electrical energy and force the armature in the motor to rotate. Both mechanical and electrical test equipment and tools are discussed with detailed how to. 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 bearings allow the shaft or rotor assembly to turn freely and smoothly in the frame. This is part 3 of a ser. However it generally involves. For maximum effectiveness this manual should be used as a supplement to any ongoing on the job training in the ima electrical repair shop.

This motor is a baldor cl3509 1 hp 3450 rpm 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. Bearings are located at both ends of the motor which are sometimes called bell housings or end bells.

Electricity is passed to the windings in the armature via carbon brushes. In this video i show how to test dismantle repair and reassemble a small ac motor patreon link. If the internal windings burn out your ac motor needs to be checked out professionally.