Occasionally a technician may need to temporarily add oil to a semi-hermetic reciprocating compressor to maintain an adequate oil level, if the oil has been trapped out in the evaporator or suction ...

The small hermetic compressors in ordinary household refrigerators or freezers usually have a permanently welded circular steel shell, which can seal the working gas inside the system. There is no way ...

In this HVAC training video program, the focus is on semi-hermetic compressors found in commercial refrigeration equipment. Jim discusses how they differ from hermetic compressors, how to test the ...

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