The evacuation process evicts undesirable elements from the refrigerant system. This article examines the terminology, procedures, and equipment used in the evacuation process.
Troubleshooting and servicing refrigeration and air conditioning systems can be a challenging process for entry-level or experienced technicians. Regardless of your experience, it is essential that you have a solid understanding of the fundamentals. You also need to have the right tools.
There are good reasons for purging air from your refrigeration system, operating efficiency being the main one; increased equipment lifespan is another. It’s important, however, that correct purging procedures are used.
Many service technicians often become confused when the liquid line becomes restricted in the refrigeration system. This is because the symptoms often look like an undercharge of refrigerant. This article covers a refrigeration system with a restricted liquid line after the receiver using R-134a as the refrigerant. The refrigeration system is a low temperature freezer with a receiver and a TXV.
There are four pieces to the refrigerant system diagnostic puzzle: suction pressure; high-side pressure; superheat; and subcooling. This article talks about subcooling.
One of the main functions of the condenser is to condense the refrigerant sent to it from the compressor, but desuperheating and subcooling are other important functions.
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