... inlet, after being full of water, open power switch, closed the valve F2, F4, the equipment begin work. 7-2CleaningCleaning membrane pipe ... after untra-filtration, first, take out the filter, element, Put water inlet & water outlet of ultrafiltration ... valves, in order to keep enough water in membrane pipe for maintainence. 8) Attention8-1 The temperature of the ...