When is the best time to identify a low or high voltage issue?

Identifying a low or high voltage issue at equipment startup, before the unit is energized, is crucial because it allows technicians to assess the electrical supply and ensure that it meets the necessary operational parameters required for safe and effective equipment function. During startup, systems can be checked with appropriate test equipment to determine if the voltage is within acceptable limits, preventing potential damage to components and ensuring safety for the operator. This proactive approach minimizes the risk of operating the equipment under incorrect voltage conditions, which could lead to malfunction, reduced efficiency, or hazardous situations.

While routine maintenance checks are beneficial for overall equipment health, they may not specifically address immediate voltage issues if the equipment is not in a powered state at that moment. Assessing equipment after prolonged use or when unusual noises are heard could lead to more severe problems or equipment damage; these scenarios often indicate that a voltage issue has already impacted the operational conditions. Therefore, performing voltage checks before energizing the equipment ensures that the technician can take corrective actions before any operational risk is introduced.