Refrigerating system comprising a refrigerant circuit having the following elements: a first compressor unit, a condenser/gas cooler, a collecting container, and an intermediate expansion device disposed between the condenser/gas cooler and the collecting container, such that the collecting container is operated at an intermediate pressure level, a normal refrigeration branch coupled between the collecting container and a suction side of the first compressor unit, the normal refrigera tion branch comprising a first expansion device and a first evaporator, wherein a normal refrigeration branch outlet conduit is coupled between the first evaporator and the first compressor unit, a freezing branch coupled between the collecting container and the suction side of the first compressor unit, the freezing branch comprising a second expansion device, a second evaporator, a second compressor unit and a desuperheating device, wherein a freezing branch outlet conduit is coupled between the desuperheating device and the first compressor unit, a cooling branch bypass conduit coupled between the collecting container and the suction side of the first compressor unit, wherein the cooling branch bypass conduit is coupled to the collecting, container via a bypass conduit expansion device, and wherein the refrigerant circuit further comprises refrigerant conduits for connecting said elements and for circulating the refrigerant therethrough. Characterised by a heat exchanger establishing a heat exchange relationship between the cooling branch bypass conduit and a cooling branch supply con-duit coupling the collecting container to the first and second ex-pansion devices (22, 26), wherein the desuperheating device is adapted to cool the refrigerant against a secondary medium. a first compressor unit, a condenser/gas cooler, a collecting container, and an intermediate expansion device disposed between the condenser/gas cooler and the collecting container, such that the collecting container is operated at an intermediate pressure level, a normal refrigeration branch coupled between the collecting container and a suction side of the first compressor unit, the normal refrigera tion branch comprising a first expansion device and a first evaporator, wherein a normal refrigeration branch outlet conduit is coupled between the first evaporator and the first compressor unit, a freezing branch coupled between the collecting container and the suction side of the first compressor unit, the freezing branch comprising a second expansion device, a second evaporator, a second compressor unit and a desuperheating device, wherein a freezing branch outlet conduit is coupled between the desuperheating device and the first compressor unit, a cooling branch bypass conduit coupled between the collecting container and the suction side of the first compressor unit, wherein the cooling branch bypass conduit is coupled to the collecting, container via a bypass conduit expansion device, and wherein the refrigerant circuit further comprises refrigerant conduits for connecting said elements and for circulating the refrigerant therethrough. Characterised by a heat exchanger establishing a heat exchange relationship between the cooling branch bypass conduit and a cooling branch supply con-duit coupling the collecting container to the first and second ex-pansion devices (22, 26), wherein the desuperheating device is adapted to cool the refrigerant against a secondary medium.