MODEL 3900 General Commercial Pre-Installation Check List WATER PRESSURE: A minimum of 25 pounds of water pressure is required for regeneration valve to operate effectively. ELECTRICAL FACILITIES: A continuous 115 volt, 60 Hertz current supply is required. (Other voltages available.). MODEL 3900 UP-FLOW Water Conditioner Flow Diagrams 1 SERVICE POSITION 2 BRINE POSITION 3 SLOW RINSE POSITION Hard water enters at valve inlet and flows down thru mineral to the bottom distributor. Conditioned water flows up thru the distributor tube, around the piston and out the outlet. Hard water enters at valve inlet — flows thru the.
We are your trusted source for Fleck 3900 control valves for commercial-industrial softeners and media filters. Fleck 3900 manual available here. Email customercare@fleckvalves.com or call 1-800-581-3488 to Order Now!. Fleck 3900. Service Manual. 16505 Rev D NO11. TABLE OF CONTENTS. TABLE OF CONTENTS. 2 • NO11 Fleck 3900. 3200IMER T SETTING PROCEDURE How To Set Days On Which Water Conditioner Is To Regenerate (Figure 2) Rotate the skipper wheel until the number "1" is at the red . pointer. Set the days that regeneration is to occur by sliding