Which maintenance action is essential before starting a chiller?

Ensuring proper chilled-water flow is crucial before starting a chiller because it directly impacts the system's efficiency and operational safety. Chillers rely on a consistent flow of chilled water to absorb heat and maintain optimal functioning. Insufficient flow can lead to overheating, inadequate cooling performance, and potential damage to the chiller components, such as the evaporator. It may also result in increased energy consumption and operational costs.

Moreover, by confirming the chilled-water flow, you help prevent issues such as refrigerant flooding or slugging, which can result from improper flow dynamics. This step is essential to ensure that the chiller operates within its designed parameters and can effectively fulfill its cooling responsibilities.

While other maintenance actions, such as checking electrical connections, changing oil, and ensuring appropriate water levels, are also important for the overall health of the chiller system and should not be overlooked, they do not have the immediate critical impact on starting the chiller compared to ensuring proper chilled-water flow.