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How to drain correctly an oil from the refrigeration compressor?

12 Nov '18, 05:26

Nov. 12, 2018, 5:26 a.m.
KnowledgeBase's gravatar image


The procedure is as follows:

  1. Close the suction valve.
  2. Start the compressor, then open the valve in the crankcase pump out line to create vacuum causes the refrigerant to boil out of the oil for several minutes then stop the compressor.
  3. Close the discharge valve, open bypass valve to equalize the pressure above and below the piston.
  4. Open the oil drain valve and drain the oil. Draining should be done at least once a year or depending base on your routine observation that might be oil is contaminated in a short running period of time.
  5. Clean the crankcase and fitters thoroughly then follow the proper procedure of adding oil to the compressor.
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12 Nov '18, 05:28

Nov. 12, 2018, 5:28 a.m.
cheng's gravatar image

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