UPS Preventive Maintenance is a comprehensive maintenance plan that maximizes UPS efficiency and uptime while preventing load loss accomplishing the calibration of all metering and protective features, the functional testing of all transfer conditions and the inspection of online performance of equipment with load. It also ensures the installation of system upgrades where applicable and the review of alarm states, history and upgrade status. Other accessible functions are the examination of interfaces to other powertrain equipment and the visual check on batteries and battery environment. The written evaluation provides you a historical record of your equipment performance.