This lesson describes general electric motor maintenance and inspection activities.
• List the common causes of motor failure
• Identify some items to check when visually inspecting an electric motor
• List conditions to watch for when maintaining electric motors
• Discuss the value of checking and monitoring motor operating temperatures
• Describe the difference between sleeve bearings and rolling element bearings
• Describe how lubrication differs between sealed bearings and open face bearings
• List some common causes of vibration
• Discuss the value of monitoring voltage
