Preventive maintenance is the proactive scheduling of maintenance before things go wrong, rather than reacting reactively to repairs as needed. Preventive maintenance is considered better than corrective maintenance, as the costs and time spent on repairing equipment and devices are reduced. Preventive maintenance includes for example periodically checking equipment, cleaning it, carrying out lubrication and lubrication operations, carrying out inspections and repairs for elementary malfunctions before they worsen and become pretext failures in the equipment. A preventive maintenance program is a program that is applied to equipment, devices, machines, vehicles, industrial, commercial and residential facilities to preserve them and avoid sudden breakdowns, by identifying possible malfunctions and performing the necessary maintenance for them before they occur. The preventive maintenance program includes setting a maintenance schedule, determining the maintenance work to be performed, determining the materials and tools required to carry out maintenance, and determining responsibilities in carrying out maintenance. This program helps to reduce the operational costs of the equipment, also helps to increase the life of the equipment, it also helps to improve the efficiency of the equipment.