The oil receivers store oil in the system and in case it is demanded, they regularly provide oil flow in the system. In the oil storages, sight glass is used to be able to see the oil level. The oil receivers are installed between oil separators connected to the compressor and oil level regulator. The oil receivers are installed vertically and at a lever which is higher than compressor cartridge. In case it is demanded, manufacture can be performed in different capacities and characteristics.