General Circuit Breaker Maintenance – 9 minutes
Describes routine circuit breaker status checks. Describes the purpose of isolating a breaker from its operating mechanism. Shows how to service circuit breaker components.
Operating Mechanism Maintenance, Part 1 – 9 minutes
Describes general maintenance checks for circuit breaker operating mechanisms. Describes maintenance checks for solenoid and motor/spring operating mechanisms.
Operating Mechanism Maintenance, Part 2 – 12 minutes
Describes maintenance checks for pneumatic and hydraulic operating mechanisms.
Air-Magnetic and Vacuum Breaker Maintenance – 10 minutes
Describes maintenance tasks that apply specifically to air-magnetic breakers. Describes maintenance tasks that apply to vacuum breakers.
Oil Circuit Breaker Maintenance – 7 minutes
Describes maintenance tasks specific to oil circuit breakers.
Gas-Blast and Air-Blast Breaker Maintenance – 10 minutes
Describes maintenance tasks that apply specifically to gas-blast breakers. Describes maintenance tasks that apply to air-blast breakers.