Patent ID: 6164348
Filing Date: 2000-12-26
Classification: F25B,G01M

Abstract:
A method of injecting a small volume of leak detection dye into a sealed system containing a refrigerant, said system including a low pressure side accessed for refrigerant charging by a Schrader valve, said method including the steps of:precharging a syringe with a volume of said dye, said syringe having a barrel, a plunger movable in said barrel to a discharge end of said barrel, a Luer coupling at said discharge end of said barrel;connecting one end of a hose assembly to said Luer coupling by an adapter;providing a check valve in said hose assembly preventing the communication of fluid pressure to said syringe through said hose assembly;connecting the other end of said hose assembly to said Schrader valve; andinjecting dye from said syringe into said system through said hose assembly by advancing said plunger in said barrel.