Proper maintenance procedures for a centrifugal pump include closing valves before stopping, regular lubrication, adjusting packing, draining fluids in winter to prevent freezing, and proper storage for long periods of inactivity.

The text outlines maintenance procedures for a centrifugal pump, including checks for leaks and shaft flexibility, monitoring oil levels, and adjusting outlet valves for optimal efficiency. It also emphasizes pre-starting protocols for pumps positioned higher than a liquid storage tank and provides temperature parameters for bearing operation.

The cover and inboard bearing in a centrifugal pump are critical components that play key roles in the pump's operation and maintenance. The cover serves to enclose and protect the internal components of the pump, while the inboard bearing supports the pump shaft within the pump housing.

The pump shaft of the centrifugal pump is brushed to reduce friction and wear while providing lubrication to protect the pump shaft and seals.