Alfa Laval Oil Cleaning Module OCM cleaning solutions for mineral oils Clean oil is crucial for the safe, reliable and economical operation of virtually all kinds of equipment that uses oils for either lubrication or hydraulic systems. Clean oil reduces wear and corrosion on all equipment installed downstream, thus helping avoid breakdowns and cutting back on downtime throughout a plant or installation. The Alfa Laval Oil Cleaning Module (OCM) provides rapid, effective separation of the oil, water and sludge components in contaminated mineral lubricating and hydraulic oils – all at the same time. The benefits include lower operating costs due to reduced oil consumption, lower disposal costs and improvements in both product quality and the working environment. Easy to operate oil purification The Alfa Laval Oil Cleaning Module is a modularized system with all the component systems fully integrated, ensuring easy operation while engaged in oil cleaning duties. At the heart of this compact, easy-to-use equipment is an Alfa Laval disc stack centrifuge of supreme efficiency. Alfa Laval Oil Cleaning Modules are available with all components and systems pre-configured on a skid, for easy, rapid installation and ready for immediate use. They ensure the effective removal of particles and water in the oil. If an emergency arises, even a high level of water contaminants can be removed. An OCM provides continuous purification of lubricating and hydraulic oils while the equipment in which they are used is in operation. If required, the OCM can continue operating while the primary equipment is at a standstill. The impact of contaminants in oil Contaminants in lubricating and hydraulic oils have serious effects on system performance, operating costs and durability. For example, the presence of solid particles: • abrades metal surfaces • increases friction • clogs filters Similarly, if water is present in the oil, this: • causes corrosion • reacts with additives • forms oil/water emulsions • causes significant deterioration in the performance of the oil. Cleanliness counts OCM oil cleaning modules are specifically designed to remove contaminant particles, solid impurities and free water from mineral lubricating and hydraulic oils. This is important because clean, uncontaminated oil: • extends the service life of all kinds of equipment by as much as 50% • eliminates or reduces corrosion by removing free water present in the oil • ensures longer uptime operation, thus boosting productivity • results in significant reductions in machinery wear and breakdowns • cuts operating costs by reducing oil consumption • extends oil service life and therefore reduces replacement and disposal costs • improves both product quality and the working environment. Complete OCM 304

Fig. 1 OCM capacity table – ISO VG 46 lubricating oil separation temperature of 70°C. For steam turbines, the cleaning capacity should be based on 10% of the total charge of lubricating oil, unless stated otherwise by the turbine manufacturer. Cleaning capacities for turbine lubricating oil OCM 206 OCM 305 OCM 304 OCM 104 OCM103 0 1000 2000 3000 4000 5000 6000 7000 8000 litres per hour Cleaning capacities for hydraulic oil and lubricating oil for the steel and paper industries OCM 206 OCM 305 OCM 304 OCM 104 OCM103 0 500 1000 1500 2000 2500 3000 3500 4000 litres per hour Fig. 2 OCM capacity table...

Installation The oil cleaning module is normally installed in a by-pass system, treating a specified percentage of the full flow of contaminated oil. Tank-to-tank installation is also possible. The suction line from the lubricating or hydraulic oil tank/sump is installed in the lowest end of the tank, typically 1/3 from the bottom. This ensures that any dirty oil present is treated promptly. The suction height should be as low as possible in order to reduce or eliminate any pump cavitation effect. The oil return line is connected to the top of the oil tank opposite to the oil suction in order...