1. Before operating the trainer in any way, check all the valves. All sampling(Valves, drain valves, shut-off valves and needle valves should be closed. The three-way valves should divert the flow in the desired direction. Also check the status of the pumps. Make sure that they are switched off and that the control knob is fully counterclockwise. Turn on the system vent. 2. Fill the solvent tank with 5 liters of(Hexane). 3. Grind some soybeans. Fill the extraction basket with this. 4. Turn on the main AC circuit breaker. Reduce the set-point of the solvent and distillation boilers below ambient temperature if they are not so already. 5. Open TWV-1 so that the solvent flows from the solvent boiler ** the top of the extraction tank. Open TWV-2 so that the flow is open from the solvent tank ** the distillation boiler. Leave NV-1 and TV-1 closed. Increase the set point of the solvent temperature controller until it is at the temperature indicated by the instructor. rank operation