What are the operating characteristics of a "waterlogged" potable water system hydro pneumatic header tank that needs to be recharged with compressed air?

Correct Answer: Option C — Very short and frequent running and idle periods for the potable water pump.

A waterlogged hydro-pneumatic tank lacks the necessary air cushion to act as a pressure buffer. Without this compressible volume, the system pressure fluctuates rapidly with minimal water withdrawal, causing the pump to cycle on and off frequently. This short-cycling significantly increases wear on motor starters and pump mechanical components.