What is the definition of preventive maintenance? In a nutshell, preventive maintenance is a proactive mainmaintenance strategy that focuses on regularly scheduled inspections and repairs to keep equipment running optimally and to reduce the risk of unexpected costly repairs. This type of maintenance is critical to the success of any business that relies on equipment as a major part of their operations. It involves regular inspections and routine servicing of machinery, tools and other equipment to ensure that they are in good working order and meet the requirements of the manufacturer. This type of regular maintenance can help to avoid costly breakdowns and repairs, reduce machine downtime, and extend the life of the equipment. Preventive maintenance can include replacing parts before they fail, lubricating moving parts, and calibrating and adjusting equipment. Regular inspections of wiring and other electrical components can also help to prevent fires or other hazards. While it is true that preventive maintenance can be costly, it is a necessary step for any business that wants to ensure the safety and reliability of their equipment.