Before energizing a newly installed system, what should you always check for?

Before energizing a newly installed refrigeration system, checking for tight connections at electrical terminals is essential to ensure safety and proper functionality. Loose or improperly connected electrical terminals can lead to arcing, short circuits, or equipment failures, which could result in damage to the system or pose a fire hazard. Ensuring that all electrical connections are secure helps maintain efficient operation and prevents potential electrical issues that could arise when the system is powered on.

Other options address various components of system setup, but checking electrical terminal connections directly relates to preventing electrical hazards and ensuring system integrity, making it a critical step before energizing the system. For instance, while checking voltage levels and fluid levels are important, these aspects would not be sufficient if there are underlying issues with the electrical connections that could cause a malfunction upon energization.