The use of equipment until the failure thereof is described as a reactive maintenance model. It is used for certain systems/equipment, the failure of which cannot lead to significant losses. For example, it is obvious that failure of one luminaire does not pose significant risks or potential loss. Usually, no special checks or inspections are required for luminaire to operate. In such cases, a reactive maintenance model is used.
However, there are systems whose malfunctioning may lead to significant losses or risks. For example, the operation of a fire alarm requires periodic inspections and tests. The scheduled preventive checks-inspections of systems are used for that purpose. The same is true for the lighting system. Imagine that if a lighting control time relay, which is responsible for switching off the light during non-working hours, does not work, failure of this system can already lead to up to 10% higher electricity consumption. Consequently, scheduled inspections for a part of this system may reduce waste of energy resources.
Up to 8 different systems or hundreds of different devices may simultaneously operate in the building. Therefore, an appropriate maintenance model needs to be adapted for each system not only for us to be able to ensure the requirements of Lithuanian legislation but also that we could make good use of the productivity of building systems by eliminating risks or losses of energy consumption. For example, heating, ventilation and air conditioning (HVAC) systems in the building account of up to 40% of energy costs. In addition, the operation of these systems ensures by 100% the comfort of people who are present in the building. Nevertheless, the reactive maintenance model or insufficient periodicity of scheduled inspections is incorrectly applied to the maintenance of these systems.
Naturally, an inspection of the HVAC system 365 times a year, when calculating wages, would cost a lot. Therefore, despite the importance of the proper system operation, the number of periodic inspections is reduced. Verification of the operation of these systems using digitization technologies is the only effective way to maintain a balance between the costs of maintenance and the impact of the service provided - comfort and optimal energy costs.
So, application of digitization for equipment maintenance is the essence of predictive maintenance which reduces the cost of maintenance itself and ensures efficient 24/7 operation of equipment.