Liebert Challenger 3000 with iCOM

5.5.4 Motor Ball Valve—Digital Scroll CompressorsGlycol/GLYCOOL-Cooled Models—Self-Contained CompressorRefer to 4.4 - Motorized Ball Valve—Digital Scroll Compressors for details on the motorized ballvalve.5.6 CondenserThe condenser is designed to operate in conjunction with a drycooler. The maximum coolant pressureis 350 psig (2413 kPa).5.7 Glycol Regulating ValveThe glycol regulating valve automatically regulates the amount of coolant necessary to remove theheat from the refrigeration system, permitting more fluid to flow when load conditions are high andless fluid to flow when load conditions are low. The valve consists of a brass body, balance spring,valve seat, valve disc holders, capillary tube to discharge pressure, and adjusting screw.5.7.1 Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton Units (Johnson Controls Valve)High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units (Johnson Controls Valve)For details, refer to 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton Units(Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units(Johnson Controls Valve).5.7.2 High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve)For details, refer to 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units(Metrex Valve).5.7.3 Testing Valve FunctionWhen the refrigeration system has been off for approximately 10-15 minutes, the coolant flow shouldstop.Should the coolant continue to flow, the valve is either improperly adjusted (head pressure is too low)or the pressure sensing capillary is not connected properly to the condenser.Table 20 Refrigerant control settings psi (kPa)Low PressureCut OutLow PressureCut InHigh PressureCut Out20 (137.9) 65 (448.2) 400 (2758)53