During a pre-operational inspection, what is checked for looseness and signs of overheating?

During a pre-operational inspection, checking electrical connections for looseness and signs of overheating is crucial for several reasons. Electrical connections are points where components are joined, and if any of these connections are loose, it can lead to poor conductivity, which in turn can generate excessive heat. This overheating can damage the electrical components and may lead to a failure of the system or even pose a fire hazard.

Additionally, signs of overheating, such as discoloration or melting of insulation, indicate potential electrical issues that need immediate attention. Ensuring that connections are tight and in good condition helps maintain system efficiency and safety. Proper electrical connections contribute significantly to the reliable operation of HVAC/R systems, making this check vital in a pre-operational inspection.