Buy a can of R134a

来源: 于 2009-06-24 13:42:12 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

in any parts store, and buy those can come with a pressure gauge, (cost $4-5 extra), then use that to check the pressure at low pressure side. The pressure gauge has a quick disconnect fitting that can be plugged into the port at low pressure side. The you will know what pressure in the line.