Copeland 998 1873 01 Capillary Kit 320788 703 this control opens the electrical this control opens the electrical circuit when internal system pressures reach 610 PSI and resets automatically when pressure drops to 420 PSI Technicians should generally torque these fittings to approximately 65 75 lb ft Integrating this kit into your system setup is a standard professional practice for optimizing heat transfer and maximizing the efficiency of cooling operations without the risk of improper liquid floodback or over heating The Copeland 998 1873 01 includes the calibrated capillary tube and necessary fittings required to establish the injection line between the liquid line and the compressor injection port