How To Repair Electric Motor Commutator

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.

How to repair electric motor commutator.

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. 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. The flipping the electric field part of an electric motor is accomplished by two parts. The commutator and the brushes.

Commutator and brushes the diagram at the right shows how the commutator and brushes work together to let current flow to the electromagnet and also to flip the direction that the electrons are flowing at just the right moment. The readings should be the same on all bar to bar checks. Small electric motor repair by josh weber updated july 21 2017. Conduct commutator bar check by setting the voltmeter to the rx 1 scale and then touching the probes of the meter to adjacent bars on the commutator gradually moving around the entire perimeter of commutator.

We work with v bounded commutators glass banded commutators and external internal shrink ring commutators. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine. Electric materials has the capabilities to replace mica v rings or obvious electrical problems within a commutator all in house. Electric motor test repair guide.