Pentair Fleck 2850s, Service Manual

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FLECK

 2850S  Service Manual

START-UP INSTRUCTIONS

The water softener should be installed with the inlet, outlet, and 

drain connections made in accordance with the manufacturer’s 

recommendations, and to meet applicable plumbing codes.
1.  Turn the manual regeneraton knob slowly in a clockwise 

direction until the program micro switch lifts on top of the 

first set of pins. Allow the drive motor to move the piston to 

the first regeneration step and stop. Each time the program 

switch position changes, the valve will advance to the next 

regeneration step. Always allow the motor to stop before 

moving to the next set of pins or spaces.

NOTE:   For electronic valves, please refer to the manual 

regeneration part of the timer operation section. If the 

valve came with a separate electronic timer service 

manual, refer to the timer operation section of the 

electronic timer service manual.

2.  Position the valve to backwash. Ensure the drain line flow 

remains steady for 10 minutes or until the water runs clear 

(see above).

3.  Position the valve to the brine / slow rinse position. Ensure 

the unit is drawing water from the brine tank (this step may 

need to be repeated).

4.  Position the valve to the rapid rinse position. Check the drain 

line flow, and run for 5 minutes or until the water runs 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 position 

to 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.

3200 TIMER 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 

tabs on the skipper wheel outward to expose trip fingers. Each 

tab is one day. Finger at red pointer is tonight. Moving clockwise 

from the red pointer, extend or retract fingers to obtain the 

desired regeneration schedule.

How To Set The Time Of Day

1.  Press and hold the red button in to disengage the  

drive gear.

2.  Turn the large gear until the actual time of day is at the time 

of day pointer.

3.  Release the red button to again engage the drive gear.

How To Manually Regenerate Your Water Conditioner At  

Any Time

1.  Turn the manual regeneration knob clockwise.
2.  This slight movement of the manual regeneration knob 

engages the program wheel and starts the  

regeneration program.

3.  The black center knob will make one revolution in the 

following approximately three hours and stop in the position 

shown in the drawing.

4.  Even though it takes three hours for this center knob to 

complete one revolution, the regeneration cycle of your unit 

might be set for only one half of this time.

INSTALLATION 

CONTINUED

Meter Dome and Union Orientation

Control valves outfitted with an electromechanical timer and 

stainless steel water meter include a special male x female 

threaded stainless steel union to insure proper installation 

and operation of the water meter.

  The location of this union in relation to the 

control valve and water meter is critical for 

proper operation. DO NOT omit or substitute 

this special union; it positions the meter 

dome at the correct distance from the control 

valve and allows re-positioning the water 

meter dome for proper operation.

1.  Apply a suitable thread sealant to the male threads of the 

union and meter body.

2.  Thread the union into the OUTLET port of the control 

valve, then thread the meter into the union. See 

illustrations below.

3.  Rotate the water meter body so the meter dome is at 

the 12 o’clock position. Loosen the nut on the union to 

facilitate this if required. Once in position, tighten the 

union nut.

4.  Connect the meter cable to the open port in the center of 

the meter dome.

5.  Continue with the installation of the control valve.

Position

Meter Dome 

at 12 o’clock

orientation

Meter

Union

Valve Body

Powerhead Assembly