HVAC Triple Evacuation | Heating & Cooling Refrigeration

by High Performance HVAC | Refrigeration | 8 comments

HVAC Triple Evacuation - There is definitely some confusion among HVAC/R technicians about the proper methods of evacuation. Evacuating before introducing the refrigerant to the refrigeration circuit. Let me be clear from the start that my methods of evacuating a refrigeration circuit are based on experience, education, and an official guide produced by the US Military and their specifications and proper procedures for evacuating a refrigeration system. It is very important to do a refrigeration triple evacuation properly the first time.

This is the proper procedure on any US Navy ship or support ship that a refrigeration system that has been open to the environment. It must be triply evacuated before the refrigerant is reintroduced to the refrigeration circuit.  The purpose is to prevent future problems because of contaminants including moisture in the system. (more…)