jemc
10-02-2006, 08:05 PM
Low-pressure system !, I don’t get it ?, I studding to get EPA universal technician by a very simple bulleting preparation manual front esco institute, that really do not gave me mush information I can‘t really visualized it, neither get more information on the web. I have little experience in commercial and industrial with the exertion of been a operator in a beer factory with a very old /large ammonia system back in my country years ago. Low pressure system work in a vacuum pressure ?, the primary refrigerant could be R-11?, so what kind of compressor are those? ,what may be the head pressure?; those system can only be used in air conditions?; I remember to use R-11 to clean condenser and evaporators it mostly state in liquid a least you overly spouse to the atmosphere their coming in a barrel that just need pressurizes with nitrogen . Please any help will be appreciate