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Pentair Fleck 4650 - User Manual

Pentair Fleck 4650
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Fleck 4650
Service Manual
BR40261 Rev C AP10
TABLE OF CONTENTS
JOB SPECIFICATION SHEET ...............................................1
INSTALLATION AND START-UP PROCEDURE ....................1
CONTROL VALVE DRIVE ASSEMBLY ..................................2
CONTROL DRIVE ASSEMBLY FOR CLOCK ........................3
BYPASS VALVE ASSEMBLY .................................................4
WATER CONDITIONER FLOW DIAGRAMS .........................5
SERVICE INSTRUCTIONS ....................................................7
TROUBLESHOOTING ...........................................................9
SERVICE ASSEMBLY ............................................................10
JOB SPECIFICATION SHEET
Job Number: _______________________________________
Model Number: _____________________________________
Water Test: ________________________________________
Capacity Per Unit: ________ Max. ________Per Regeneration
Mineral Tank Size Diameter: _____ Height: _______________
Brine Tank Size and Salt Setting per Regeneration: _________
1. Type of Timer:
A. "L"
B. 7 Day
C. 12 Day
2. Day/Time of Regeneration: _________________
3. Drain Line Flow Control: ___________________ gpm
4. Brine Rell Rate: _________________________ gpm
5. Injector Size#: ___________________________
INSTALLATION AND START-UP
PROCEDURE
The water softener should be installed with the inlet, outlet and
drain connections made in accordance with manufacturer’s
recommendations and to meet applicable plumbing codes.
24 GR, Gear
Manual
Regeneration
Knob
Skipper Wheel
(Shows every
other day
regeneration)
Red Pointer
Red Time
Set Button
Time of Day
Arrow
BR61501-4650 Rev A
Figure 1
1. Manually index the softener control into the service position
and let water ow into the resin tank. When the water ow
stops, open a softened water tap until all air is released
from the lines, then close the tap.
Note: The various regeneration positions may be
dialed manually by turning the knob on the
front of the control until the indicator shows
that the softener is in the desired position.
2. Manually index the control to the backwash position and
allow water to ow at the drain for 3 or 4 minutes.
3. Remove back cover plate.
4. Make sure that the salt dosage is set as recommended by
the manufacturer. Manually index the control to the brine ll
position and allow the brine tank to ll to the top of the air
check.
5. Manually index the control to the brine draw position and
allow the control to draw water from the brine tank until it
stops.
6. Plug in the electrical cord and look in the sight hole in the
back of the motor to see that it is running. Set the days that
regeneration is to occur by sliding tabs on skipper wheel
outward to expose trip ngers. Each tab is one day. Finger
at red pointer is tonight. Moving clockwise from red pointer,
extend or retract ngers to obtain the desired regeneration
schedule.
7. Manually advance the control to the beginning of the brine
ll position; and allow the control to return to the service
position automatically.
8. Fill the brine tank with salt.
9. Replace back cover on the control.
10. Make sure that any bypass valving is left in the normal
service position.

Table of Contents

Questions and Answers

  • C
    Christina MendozaAug 17, 2025
    Why is my Pentair Fleck 4650 Water Dispenser delivering hard water?
    • C
      Cindy FisherAug 17, 2025
      If your Pentair Water Dispenser is delivering hard water, several factors could be the cause: * The bypass valve may be open. Ensure that it is closed. * There might be no salt in the brine tank. Add salt, maintaining the level above the water. * The injectors or screen could be plugged. In this case, replace them. * Insufficient water flowing into the brine tank, check the brine tank fill time and clean the brine line flow control if plugged. * Hot water tank hardness, repeated flushings of the hot water tank is required. * Leak at distributor tube, make sure distributor tube is not cracked. Check O-ring and tube pilot. * Internal valve leak. Replace seals and spacers and/or piston.
  • R
    robertsmargaretAug 20, 2025
    What to do if my Pentair Water Dispenser fails to regenerate?
    • H
      heidimartinezAug 20, 2025
      If your Pentair Water Dispenser is not regenerating, it could be due to a few reasons: * The electrical service to the unit may be interrupted. Ensure permanent electrical service by checking the fuse, plug, pull chain, or switch. * The timer might be defective. If so, replace it. * There may have been a power failure. Reset the time of day.
  • J
    Julie HesterAug 22, 2025
    Why does my Pentair Fleck 4650 Water Dispenser use too much salt?
    • L
      laurarobertsonAug 22, 2025
      If your Pentair Water Dispenser is using too much salt, consider these potential causes: * The salt setting may be improper. Check both the salt usage and the salt setting. * There might be excess water in the brine tank. See problem Excessive water in brine tank below.
  • J
    Juan LeeAug 26, 2025
    How to fix salt water in the service line of my Pentair Fleck 4650 Water Dispenser?
    • Q
      qgonzalezAug 26, 2025
      If you're experiencing salt water in the service line of your Pentair Water Dispenser, here's what might be happening: * The injector system could be plugged. Clean the injector and replace the screen. * The timer may not be cycling. Replace the timer. * There might be foreign material in the brine valve. Clean or replace the brine valve. * Foreign material in brine line flow control. Clean brine line flow control.
  • J
    Jeffrey GallegosAug 28, 2025
    What causes loss of water pressure in my Pentair Water Dispenser?
    • K
      Kelly WoodsAug 28, 2025
      If you're experiencing a loss of water pressure with your Pentair Water Dispenser, here are some possible causes: * Iron buildup in the line to the water conditioner. Clean the line. * Iron buildup in the water conditioner itself. Clean the control and add resin cleaner to the resin bed. Also, increase the frequency of regeneration. * The inlet of the control may be plugged due to foreign material broken loose from pipes. Remove the piston and clean the control.
  • K
    Kelly MartinAug 30, 2025
    Why is my Pentair Water Dispenser not drawing brine?
    • W
      wtaylorAug 30, 2025
      If your Pentair Water Dispenser isn't drawing brine, consider the following: * The drain line flow control could be plugged. Clean the drain line flow control. * The injector might be plugged. Clean or replace the injectors. * The injector screen could be plugged. Replace the screen. * The line pressure might be too low. Increase the line pressure to at least 20 psi at all times. * There could be an internal control leak. Change the seals and spacers and/or piston assembly.
  • J
    jimmywardSep 2, 2025
    Why does the drain flow continuously on my Pentair Fleck 4650?
    • C
      caldwelldavidSep 2, 2025
      If the drain is flowing continuously in your Pentair Water Dispenser, it could be due to: * Foreign material in the control. Remove the piston assembly and inspect the bore, remove any foreign material, and check the control in various regeneration positions. * An internal control leak. Replace the seals and/or piston assembly. * The control valve jammed in brine or backwash position. Replace the seals and/or piston assembly. * The timer motor stopped or jammed. Replace the timer.
  • P
    Patrick AndersonSep 5, 2025
    What causes excessive water in the brine tank of my Pentair Water Dispenser?
    • O
      omurraySep 5, 2025
      If there's excessive water in the brine tank of your Pentair Water Dispenser, it might be due to a plugged drain line flow control. Try cleaning the flow control.
  • L
    Linda HowardSep 8, 2025
    Why is there iron in the conditioned water from my Pentair Fleck 4650?
    • M
      Mark RomeroSep 8, 2025
      If there's iron in the conditioned water from your Pentair Water Dispenser, the resin bed may be fouled. Check the backwash, brine draw, and brine tank fill. Also, increase the frequency of regeneration and the backwash time.
  • R
    Ralph PittmanSep 12, 2025
    What causes loss of resin through the drain line in my Pentair Fleck 4650?
    • R
      Robert BrownSep 12, 2025
      If you're experiencing a loss of resin through the drain line of your Pentair Water Dispenser, there might be air in the water system. Ensure that the well system has a proper air eliminator control and check for a dry well condition.

Summary

INSTALLATION AND START-UP PROCEDURE

JOB SPECIFICATION SHEET

CONTROL VALVE DRIVE ASSEMBLY

CONTROL DRIVE ASSEMBLY FOR CLOCK

BYPASS VALVE ASSEMBLY

WATER CONDITIONER FLOW DIAGRAMS

Service Position

Illustrates water flow through the unit during normal service operation.

Preliminary Rinse Position

Details water path during the preliminary rinse stage of regeneration.

Backwash Position

Explains water flow during the backwash cycle of regeneration.

Brine Position

Outlines water flow during the brine draw and brine fill stages.

WATER CONDITIONER FLOW DIAGRAMS continued

Slow Rinse Position

Describes water flow during the slow rinse phase of regeneration.

Second Backwash Position

Explains water flow during a second backwash cycle.

Settling Rinse Position

Details water flow during the settling rinse period.

Brine Tank Fill Position

Illustrates water flow used to fill the brine tank.

SERVICE INSTRUCTIONS

TO REMOVE TIME BRINE VALVE, INJECTORS, AND SCREEN

Step-by-step guide for removing brine valve, injectors, and screen.

TO REPLACE TIMER

Instructions for replacing the timer assembly on the control valve.

SERVICE INSTRUCTIONS continued

TO REPLACE PISTON ASSEMBLY

Procedure for removing and installing the piston assembly.

TO REPLACE SEALS AND SPACERS

Guide for replacing worn seals and spacers within the valve.

TROUBLESHOOTING

SERVICE ASSEMBLY

Pentair Fleck 4650 Specifications

General IconGeneral
BrandPentair
ModelFleck 4650
CategoryWater Dispenser
LanguageEnglish

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