In order to save energy, when refrigeration system using water frozen water units + free cooling system, have refrigeration, precooling, free cooling three operating mode.
为了节约能源，当制冷系统采用水冷冷冻水机组+自由冷却系统时，有制冷、预冷、自由冷却三种运行模式。
This is to free the air bubbles from the car engine cooling system.
这是自由的空气泡从汽车发动机冷却系统。
The controller selectively operates the system in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump.
用于通过经由所述泵使制冷剂循环经过所述制冷回路在所述自由冷却模式下选择性地操作所述制冷回路的控制器；
The controller selectively operates the system in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump.
用于通过经由所述泵使制冷剂循环经过所述制冷回路在所述自由冷却模式下选择性地操作所述制冷回路的控制器；
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