Standard Operating Procedure - Ultrafiltration - Department of ...

ShutdownOnce the desired amount of feed has been filtered the Model L should beshutdown according to the following steps:1. Relieve pressure in system by fully opening pressure control valve [12].2. Press the “STOP” button on the control panel [17] to turn off the system pump.3. Open the reservoir drain valve [21] to rinse the solution out of the system.4. Close the reservoir drain valve.5. Fill reservoir with de-ionized (DI) water.6. Turn on pump by pressing “FWD” on pump controller.7. Adjust pump speed to desired operating conditions using the up and down arrows on thecontroller.8. Slowly close pressure control valve to build up system. Stop increasing the pressure oncefluid begins to flow through the permeate line [11].9. Allow DI water to circulate for several minutes.10. Relieve pressure in system by fully opening pressure control valve.11. Press the “STOP” button on the control panel to turn off the system pump.12. Open the reservoir drain valve to rinse the DI water out of the system.13. Close the reservoir drain valve.14. Turn off the flow of water circulating through the heat exchanger by closing the heatexchanger inlet valve [5].15. Unplug the pump power cord [18].16. Close the main building water supply valve (ball valve).17. Verify that the membrane has been cleaned and stored in the proper solution – seemembrane documentation.18. Drain system feed tank, store contents as required. Follow chemical / waste storageprocedures as outlined in section 1 on safety.19. Flush system with D.I water per flush procedure.20. Store membrane in preservative as required.21. Label all chemical storage as outlined in section 1.22. Unplug power cable.38