Central system cooling devices are devices that control and cool more than one cooler with a single external unit. It is generally preferred in markets and production facilities. In a store with a central system, aisle fridges, cold storage depots, process areas are controlled and cooled through a single unit. It is preferred because it saves space especially in big markets and stores. Semi hermetic, scroll and hermetic screw compressors are used in central system cooling devices. Oil level regulator, oil separator, oil tank, presostats, suction and discharge line dryers (dryer-cartridge), compressor inlet-outlet check valves and ball valves are used as standard in all central systems we produce. The operation of the compressor and condenser fans in the system is carried out by a microprocessor according to the information received from the sensors, depending on the capacity. The operation of the compressors and the adjustment of the operating times are automatically regulated by the microprocessor. Compared to individual cooling devices, central systems have lower initial investment costs. They save space and provide 25%-30% energy savings, and have a wide range of capacities.