DC Motor Maintenance
$49.00
Duration: 1h
This lesson describes some of the basic concepts of DC motors; explains how DC motors differ from AC motors; describes the components of a DC motor and their functions. This lesson also covers DC motor maintenance, including commutator inspection and maintenance as well as brush maintenance; explains various types of commutator problems and how to remedy diem; describes how to select, install, and seat brushes.
Objectives:
- Maintain a DC Motor, including identifying components of a DC motor commutator and their functions
- Describe the color of the commutator and explain the function of the oxide film
- Identify wear patterns and the causes of arcing, high mica, uneven segments and thrown solder, and know how to correct them
- Explain how to prepare a commutator for reconditioning, how to undercut the mica of a commutator, and how to clean and check the commutator after maintenance
- Describe how to inspect, select, install and seat brushes
- Describe the procedures for cleaning and inspecting the brush holders
- Explain how to adjust spring pressure
