The oil separator is installed on refrigeration machines that operate at temperatures below zero degrees Celsius. At this temperature the oil becomes more viscous. The low return coolant pressure hinders the return of oil. Therefore, the oil separator is required. The low temperature refrigerant fluids do not mix with the oil, so it is difficult to return oil to the compressor.
Operation:
Coolant fluid comes hot to the oil separator through the injector connection, then passes through the oil reservoir and then to the filter where the oil is separated. The separated oil is collected at the bottom of the reservoir, which remains heated by the refrigerant. Thus, the separated oil is kept in the warm state, i.e., with the lowest possible content of refrigerant. A float valve regulates the oil return to the compressor.
