Hansen Technologies Auto-Purger. Model: APC. S/N: M2039. Single point purger. Refrigerant: R-717 (ammonia). Set pressure: 400 psig. Power supply: 120 V, 8.0 amps, 60 Hz. Evaporator Chamber. Water Bubbler. (2) Henry Technologies Relief Valves. Hansen Technologies Fluid Float Switch. (5) Hansen Technologies Solenoid Valves. Hansen Technologies Liquid Drainer. Hoffman Control Panel. The AUTO-PURGER is an automatic, electronically-controlled noncondensible gas (air) refrigerant purger for reducing condensing pressure. Inlets: (1) 1/2 in. dia. low pressure pumped-liquid line, (1) 1/2 in. dia. foul gas line, (1) 1/2 in. dia. water bubbler fill line. Outlets: (1) 1 in. dia. bubbler drain port, (1) 1/2 in. dia. low pressure liquid drain port, (1) 3/4 in. dia. suction line. Overall dimensions: 3 ft. 1/2 in. L x 1 ft. 9 in. W x 4 ft. 9 in. H.