TABLE OF CONTENTSJOB SPECIFICATION SHEET.3INSTALLATION INSTRUCTIONS.4START-UP INSTRUCTIONS.5TIMER FEATURES.5TIMER OPERATION.6MASTER PROGRAMMING MODE CHART.7MASTER PROGRAMMING MODE.8USER PROGRAMMING MODE. 11DIAGNOSTIC PROGRAMMING MODE. 12POWERHEAD ASSEMBLY. 13CONTROL VALVE ASSEMBLY. 143/4 INCH TURBINE METER ASSEMBLY. 16BYPASS VALVE ASSEMBLY (PLASTIC). 17BYPASS VALVE ASSEMBLY (METAL). 182300 SAFETY BRINE VALVE. 192310 SAFETY BRINE VALVE. 20TROUBLESHOOTING. 21WATER CONDITIONER FLOW DIAGRAMS. 23FLOW DATA, INJECTOR DRAW & SLOW RINSE RATES. 24DIMENSIONAL DRAWING. 25WIRING DIAGRAM. 26SERVICE INSTRUCTIONS. 27SERVICE ASSEMBLIES. 29CALIFORNIA PROPOSITION 65 WARNINGWARNING: This product contains chemicals known to theState of California to cause cancer or birthdefects or other reproductive harm.2 FLECK Model ProFloSXT Downflow Service ManualIMPORTANT PLEASE READ: The information, specifications and illustrations in thismanual are based on the latest information available atthe time of printing. The manufacturer reserves the rightto make changes at any time without notice. This manual is intended as a guide for service of thevalve only. System installation requires informationfrom a number of suppliers not known at the time ofmanufacture. This product should be installed by aplumbing professional. This unit is designed to be installed on potable watersystems only. This product must be installed in compliance with allstate and municipal plumbing and electrical codes.Permits may be required at the time of installation. It is established that when daytime water pressure isabove 80 psi (5.5 bar), the maximum pressure rating of125 psi (8.6 bar) can be exceeded. A pressure regulatormust be installed on this system or warranty is voided. Do not install the unit where temperatures may dropbelow 32 F (0 C) or above 125 F (52 C). Do not place the unit in direct sunlight. Black units willabsorb radiant heat increasing internal temperatures. Do not strike the valve or any of the components. Warranty of this product extends to manufacturingdefects. Misapplication of this product may result infailure to properly condition water, or damage to product. A prefilter should be used on installations in which freesolids are present. In some applications local municipalities treat water withChloramines. High Chloramine levels may damagevalve components. Correct and constant voltage must be supplied to thecontrol valve to maintain proper function.

JOB SPECIFICATION SHEETJob Number:Model Number:Water Hardness: ppm or gpgCapacity Per Unit:Mineral Tank Size:Diameter Height:Salt Setting per Regeneration:1. Type of Timer:A. 7 Day or 12 DayB. Meter InitiatedB. Regenerant Flow:A. DownflowB. UpflowC. Upflow Variable3. Meter Size:A. 3/4 inch Elec, PaddlewheelB. 3/4 inch Elec, Turbine4. System Type:A. System #4: 1 Tank, 1 Meter, Immediate, or DelayedRegenerationB. System #4: Time Clock5. Timer Program Settings:A. Backwash: MinutesB. Brine and Slow Rinse: MinutesC. Rapid Rinse: MinutesD. Brine Tank Refill: MinutesE. Pause Time: MinutesF. Second Backwash: Minutes6. Drain Line Flow Control: gpg7. Brine Line Flow Controller: gpg8. Injector Size#:FLECK Model ProFloSXT Downflow Service Manual 3

INSTALLATION INSTRUCTIONSWater PressureA minimum of 20 psi (1.4 bar) of water pressure is required forregeneration valve to operate effectively.Electrical FacilitiesAn uninterrupted alternating current (A/C) supply is required.NOTE: Other voltages are available. Please make sure yourvoltage supply is compatible with your unitbefore installation.Existing PlumbingCondition of existing plumbing should be free from lime andiron buildup. Piping that is built up heavily with lime and/or ironshould be replaced. If piping is clogged with iron, a separate ironfilter unit should be installed ahead of the water softener.Location Of Softener And DrainThe softener should be located close to a drain to prevent airbreaks and back flow.By-Pass Valves10. On units with a by-pass, place in by-pass position. Turn onthe main water supply. Open a cold soft water tap nearbyand let run a few minutes or until the system is free fromforeign material (usually solder) that may have resultedfrom the installation. Once clean, close the water tap.11. Slowly place the by-pass in service position and let waterflow into the mineral tank. When water flow stops, slowlyopen a cold water tap nearby and let run until the air ispurged from the unit.12. Plug unit into an electrical outlet.NOTE: All electrical connections must be connectedaccording to local codes. Be certain the outletis uninterrupted.CAUTION Do not exceed 125 psi water pressure Do not exceed 110 F (43 C) water temperature Do not subject unit to freezing conditionsWARNING: The system MUST be depressurized beforeremoving any connections for servicing.Always provide for the installation of a by-pass valve if unit isnot equipped with one.CAUTION Water pressure is not to exceed 125 psi (8.6 bar),water temperature is not to exceed 110 F (43 C), andthe unit cannot be subjected to freezing conditions.Installation Instructions1. Place the softener tank where you want to install the unitmaking sure the unit is level and on a firm base.2. During cold weather, the installer should warm the valve toroom temperature before operating.3. All plumbing should be done in accordance with localplumbing codes. The pipe size for residential drain lineshould be a minimum of 1/2 inch (13 mm). Backwashflow rates in excess of 7 gpm (26.5 Lpm) or length inexcess of 20 feet (6 m) require 3/4 inch (19 mm) drain line.Commercial drain lines should be the same size as thedrain line flow control.4. Refer to the dimensional drawing for cutting height of thedistributor tube. If there is no dimensional drawing, cut thedistributor tube flush with the top of the tank.5. Lubricate the distributor o-ring seal and tank o-ring seal.Place the main control valve on tank.NOTE: Only use silicone lubricant.6. Solder joints near the drain must be done prior toconnecting the Drain Line Flow Control fitting (DLFC). Leaveat least 6 inches (15 cm) between the DLFC and solderjoints when soldering pipes that are connected on the DLFC.Failure to do this could cause interior damage to the DLFC.7. Plumber tape is the only sealant to be used on the drainfitting. The drain from twin tank units may be run through acommon line.8. Make sure that the floor is clean beneath the salt storagetank and that it is level.9. Place approximately 1 inch (25 mm) of water above the gridplate. If a grid is not utilized, fill to the top of the air check(Figure 1) in the salt tank. Do not add salt to the brine tankat this time.4 FLECK Model ProFloSXT Downflow Service ManualFigure 1 Residential Air Check Valve

STARTUP INSTRUCTIONSThe water softener should be installed with the inlet,outlet, and drain connections made in accordance with themanufacturer’s recommendations, and to meet applicableplumbing codes.1. Turn the manual regeneraton knob slowly in a clockwisedirection until the program micro switch lifts on top of thefirst set of pins. Allow the drive motor to move the pistonto the first regeneration step and stop. Each time theprogram switch position changes, the valve will advance tothe next regeneration step. Always allow the motor to stopbefore moving to the next set of pins or spaces.NOTE: For electronic valves, please refer to the manualregeneration part of the timer operation section.If the valve came with a separate electronic timerservice manual, refer to the timer operation sectionof the electronic timer service manual.2. Position the valve to backwash. Ensure the drain line flowremains steady for 10 minutes or until the water runs clear(see above).3. Position the valve to the brine / slow rinse position. Ensurethe unit is drawing water from the brine tank (this step mayneed to be repeated).4. Position the valve to the rapid rinse position. Check thedrain line flow, and run for 5 minutes or until the waterruns clear.5. Position the valve to the start of the brine tank fill cycle.Ensure water goes into the brine tank at the desired rate.The brine valve drive cam will hold the valve in this positionto fill the brine tank for the first regeneration.6. Replace control box cover.7. Put salt in the brine tank.NOTE: Do not use granulated or rock salt.TIMER r/InformationIconFlow IndicatorServiceIconx1000 IndicatorProgrammingIconExtra CycleButtonUpButtonDownButtonFeatures of the SXT Power backup that continues to keep time and thepassage of days for a minimum of 48 hours in the eventof power failure. During a power outage, the controlgoes into a power-saving mode. It does not monitorwater usage during a power failure, but it does store thevolume remaining at the time of power failure. Settings for both valve (basic system) and control type(method used to trigger a regeneration). Day-of-the-Week controls. While in service, the display alternates between time ofday, volume remaining or days to regeneration, and tankin service (twin tank systems only). The Flow Indicator flashes when outlet flow is detected. The Service Icon flashes if a regeneration cycle hasbeen queued. A Regeneration can be triggered immediately by pressingthe Extra Cycle button for five seconds. The Parameter Display displays the current Cycle Step(BW, BF, RR, etc) during regeneration, and the datadisplay counts down the time remaining for that cyclestep. While the valve is transferring to a new cycle step,the display will flash. The parameter display will identifythe destination cycle step (BW, BF, RR, etc) and the datadisplay will read “----”. Once the valve reaches the cyclestep, the display will stop flashing and the data displaywill change to the time remaining. During regeneration,the user can force the control to advance to the next cyclestep immediately by pressing the extra cycle button.Setting the Time of Day1. Press and hold either the Up or Down buttons until theprogramming icon replaces the service icon and theparameter display reads TD.2. Adjust the displayed time with the Up and Down buttons.3. When the desired time is set, press the Extra Cycle buttonto resume normal operation. The unit will also return tonormal operation after 5 seconds if no buttons are pressed.FLECK Model ProFloSXT Downflow Service Manual 5

TIMER FEATURES CONTINUEDQueueing a Regeneration1. Press the Extra Cycle button. The service icon will flash toindicate that a regeneration is queued.2. To cancel a queued regeneration, press the ExtraCycle button.Regenerating ImmediatelyPress and hold the Extra Cycle button for five seconds.TIMER OPERATIONMeter Immediate ControlA meter immediate control measures water usage andregenerates the system as soon as the calculated systemcapacity is depleted. The control calculates the systemcapacity by dividing the unit capacity (typically expressed ingrains/unit volume) by the feedwater hardness and subtractingthe reserve. Meter Immediate systems generally do not use areserve volume. However, in twin tank systems with soft-waterregeneration, the reserve capacity should be set to the volumeof water used during regeneration to prevent hard waterbreak-through. A Meter Immediate control will also start aregeneration cycle at the programmed regeneration time if anumber of days equal to the regeneration day override passbefore water usage depletes the calculated system capacity.Meter Delayed ControlA Meter Delayed Control measures water usage andregenerates the system at the programmed regeneration timeafter the calculated system capacity is depleted. As with MeterImmediate systems, the control calculates the system capacityby dividing the unit capacity by the feedwater hardness andsubtracting the reserve. The reserve should be set to insurethat the system delivers treated water between the time thesystem capacity is depleted and the actual regeneration time.A Meter Delayed control will also start a regeneration cycle atthe programmed regeneration time if a number of days equalto the regeneration day override pass before water usagedepletes the calculated system capacity.Time Clock Delayed ControlA Time Clock Delayed Control regenerates the system on atimed interval. The control will initiate a regeneration cycleat the programmed regeneration time when the number ofdays since the last regeneration equals the regeneration dayoverride value.Day of the Week ControlThis control regenerates the system on a weekly schedule.The schedule is defined in Master Programming by settingeach day to either “off” or “on.” The control will initiates aregeneration cycle on days that have been set to “on” at thespecified regeneration time.Control Operation During RegenerationDuring regeneration, the control displays a special regenerati