Evacuation of Ammonia and CO2 Refrigerant Circuits
The purpose of this technical bulletin is to provide guidance on the requirements for proper evacuation of ammonia and CO2 refrigerant circuits before introducing refrigerant. Adequate evacuation is necessary to ensure good system efficiency, long component life and reliable operation. This document has been prepared to highlight the fact that purging through with refrigerant or using a purger to get the air back out some time later is bad practice and should not be relied upon.
Author: Star Refrigeration