DC Inverter Air
deteriorated lubricants o f the system have been stored in this storage tank;
c. the high‐ pressure nitrogen is used to blow the waste oil of the whole cooling system to ensure the waste oil is
removed th oroughly fro m the whole cooling system.
After c ompleting th e replacement of compressor, the strict evacuation and pressure holding operation
shall be carried out to the cooling system and the refrigerant shall be filled as per the system requirements.
After starting and operating the compressor for half an hour, it is necessary to test the performance
parameters of system temperature, pressure, current, etc.
Left is normal oil
Right is deteriorated oil
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