Units with an energy storage spring operating mechanism require the release of the closing spring for maintenance.

2. Breakers requiring manual maintenance by hand must be in the open position. Additionally, the main and control circuits should be disconnected, and the main circuit should be reliably grounded.

Ensure all loose bolts and nuts are fully tightened. After using springs and washers, they are prohibited from being reused.

Therefore, the ZW7-35 circuit breaker is undergoing maintenance to ensure its optimal performance.