Disconnecting Lines & Fittings

After system discharged, carefully clean entire area around coupling nut to prevent dirt entering system, always use two wrenches to avoid twisting or distorting lines and fittings (hold fitting with one wrench while loosening coupling nut with second wrench). Cap or plug all LINES and FITTINGS immediately to prevent entry of air and moisture into system and do not remove these caps until connections are being made.