Environmental and Regulatory Context. One of the most common signs is a high-side pressure that is abnormally high, indicating that the oil is no longer providing adequate lubrication and the compressor is working harder than it should.
Recognizing the Warning Signs of R134a PAG Oil Degradation
Selecting the correct grade is a crucial step in ensuring the longevity of the air conditioning compressor. This specific chemistry is required because traditional mineral oils are not miscible with the HFC-134a gas.
Signs of Degradation or Failure A system suffering from degraded PAG oil will exhibit specific symptoms that alert the user to a problem. Old oil can become contaminated with metal shavings or moisture, reducing its effectiveness.
Recognizing the Warning Signs of R134a PAG Oil Degradation
Chemical Compatibility and Function Polyalkylene glycol, or PAG oil, is the synthetic lubricant of choice for R134a refrigerant systems. Unusual noises emanating from the compressor, such as knocking or grinding.
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