Used 1 pound 410a refrigerant, 1 contactor, and 1 ss1 float switch. Checked pressures, temperatures, and amp draws. Found system with low sub cooling. Added 1 pound 410a refrigerant upon approval. Found pitting and noisy contactor, replaced upon approval. Also found bad float switch, replaced upon approval. All is now within factory specifications. Flushed drain assembly. System is working and draining properly. - Collin