Refrigeration components for advanced experiments Accessories to set up complex refrigeration circuits Features - setup of complex refrigeration circuits - sophisticated components for advanced experiments Learning objectives/experiments - setup of different refrigeration circuits - design, operation and adjustment of components -- evaporation pressure, intake pressure, capacity and refrigeration controllers -- electric thermostat -- manual valve as expansion element -- post-injection valve -- solenoid valve with coil -- four-way reversing valve -- power and auxiliary contactor -- time relay -- defrost timer -- hot gas defrosting - read and understand technical drawings and operating instructions - fault finding Specification [1] components for the setup of complex refrigeration circuits in conjunction with ET 910 and ET 910.10 [2] post-injection valve [3] refrigeration controller with PTC sensor [4] defrost timer, timing interval 30min [5] time relay [6] four-way reversing valve, solenoid valves [7] electric thermostat as temperature controller [8] power and auxiliary contactor Technical data Thermostat: -5...35°C Refrigeration controller: -40...110°C Post-injection valve: -45...35°C Time relay - response delay: 0,05s...100h Setting ranges - evaporation pressure controller: 0...5,5bar - intake pressure controller: 0,2...6bar - capacity controller: 0,2...6bar Plate height: 297mm Weight: approx. 25kg