Pentair Fleck 4600 SXT-MECH Installer Manual
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Pentair Fleck 4600 SXT-MECH Installer Manual

Pentair Fleck 4600 SXT-MECH Installer Manual

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INSTALLER MANUAL
Fleck 4600 SXT - MECH
IMPORT ANT SA FETY INSTR UCTIO NS
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Summary of Contents for Pentair Fleck 4600 SXT-MECH

  • Page 1 INSTALLER MANUAL Fleck 4600 SXT - MECH IMPORT ANT SA FETY INSTR UCTIO NS Read and follow all instructions Save these instructions WWW.PENTAIR.EU...

  • Page 2: Table Of Contents

    Procedure for technical support ..............Copyright and Trademarks ................. Limitation of liability ................... 1.10 Illustrations ....................1.11 Pentair Scan application ................10 Safety....................11 Safety pictograms definition ............... 11 Serial label location ..................12 Hazards ....................... 12 2.3.1 Personnel ......................
  • Page 3 Installer manual Fleck 4600 SXT - MECH - Table of Contents Options available on the valve ..............28 System sizing................... 29 Recommended Injector/DLFC/BLFC-Valve configuration......29 Sizing a softener (single unit) ..............29 4.2.1 Parameters to be considered ................4.2.2 Determining the required volume of resin ............4.2.3 Resin exchange capacity and capacity of the unit ..........
  • Page 4 Installer manual Fleck 4600 SXT - MECH - Table of Contents 6.1.1 Display ......................... 6.1.2 Commands ......................6.1.3 Setting the time of the day (TD) ................6.1.4 Basic programming .................... 6.1.5 Master programming mode................6.1.6 Filter programming..................... 6.1.7 Diagnostic......................6.1.8 Resetting the controller..................
  • Page 5 Installer manual Fleck 4600 SXT - MECH - Table of Contents Cleaning and maintenance ................. 88 9.4.1 First steps ......................9.4.2 Controller motor replacement ................9.4.3 Controller replacement ..................9.4.4 Power head disassembly/replacement .............. 9.4.5 Piston and/or brine valve and/or seal and spacer kit replacement....9.4.6 Micro-swithes and/or drive cam replacement ...........

  • Page 6: Generalities

    • training in the Fleck series, SXT - MECH controllers and water softener installation; • knowledge of water conditioning and how to determine proper controller settings; • basic plumbing skills. This document is available in other languages on https://www.pentair.eu/product-finder/product- type/control-valves. Release management...

  • Page 7: Norms

    Installer manual Fleck 4600 SXT - MECH - Generalities Brine Valve Cold Water Down Flow Distr Distribution DLFC Drain Line Flow Controller Hot Water Injector Not Available No By Pass Part Number Quick connect Regen Regeneration S&S Seals & Spacers Safety Brine Valve Standard Side Mounted...

  • Page 8: Available Certificates

    Pentair Quality System EMEA products benefit, under specific conditions, from a manufacturer warranty that may be invoked by Pentair’s direct customers. Users should contact the vendor of this product for applicable conditions and in case of a potential warranty claim.

  • Page 9: Illustrations

    Installer manual Fleck 4600 SXT - MECH - Generalities Pentair accepts no liability for equipment installed by the user upstream or downstream of Pentair products, as well as for process/production processes which are installed and connected around or even related to the installation. Disturbances, failures, direct or indirect damages that are caused by such equipment or processes are also excluded from the warranty.

  • Page 10: Pentair Scan Application

    1.11 Pentair Scan application Pentair Scan mobile application is the ideal support for the maintenance person in his daily business. A simple scan of the serial label present on the valve with a smartphone gives an instantaneously access to all updated information related to the product, such as: •...

  • Page 11: Safety

    Installer manual Fleck 4600 SXT - MECH - Safety Safety Safety pictograms definition DANGER This combination of symbol and keyword indicates an imminently hazardous situation that will result in serious or fatal injury if not avoided. WARNING This combination of symbol and keyword indicates a potentially hazardous situation that can result in serious or fatal injury if not avoided.

  • Page 12: Serial Label Location

    Installer manual Fleck 4600 SXT - MECH - Safety Serial label location Model Part number Electrical rating Serial number Production date Production order Mandatory Ensure that the serial label and the safety labels on the device are completely legible and clean ! If necessary, replace them with new labels in the same positions.

  • Page 13: Hygiene And Sanitization

    Installer manual Fleck 4600 SXT - MECH - Safety • do not put your fingers in the system (risk of injuries with moving parts and shock due to electric voltage). Hygiene and sanitization 2.4.1 Sanitary issues Preliminary checks and storage •...

  • Page 14: Description

    Installer manual Fleck 4600 SXT - MECH - Description Description Technical specifications Design specifications/ratings Valve body Brass Rubber components EP or EPDM Weight (valve with controller) 2.5 kg Recommended operating pressure 1.4 - 8.6 bar Maximum inlet pressure 8.6 bar Hydrostatic test pressure 20 bar Water temperature 1 - 43°C...

  • Page 15: Performance Flow Rate Characteristics

    Installer manual Fleck 4600 SXT - MECH - Description Protection rating IP 22 Power supply 100 to 240 VAC, 50/60 Hz, 0.8 A, Class II Transient overvoltages Within the limits of category II Pollution Degree Temporary overvoltages must be limited in duration and in frequency. Environmental conditions •...

  • Page 16: Outline Drawing

    Installer manual Fleck 4600 SXT - MECH - Description Outline drawing 3.3.1 SXT controller 16 / 120 Ref. MKT-IM-055 / A - 20.03.2023...

  • Page 17: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Description 3.3.2 MECH controller Ref. MKT-IM-055 / A - 20.03.2023 17 / 120...

  • Page 18: Components Description And Location

    Installer manual Fleck 4600 SXT - MECH - Description Components description and location Motor Brine cam Brine valve Piston 3.4.1 SXT controller Drive cam Controller LCD screen Regen button Up button Down button Injector block Brine line 18 / 120 Ref.

  • Page 19: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Description *Meter Drain line Mixing device Outlet Inlet *Not included in case of timeclock 3.4.2 MECH controller Green light Red light 24 hours wheel Brine line Injector block Program wheel Ref. MKT-IM-055 / A - 20.03.2023 19 / 120...
  • Page 20 Installer manual Fleck 4600 SXT - MECH - Description Meter (Not included in case of time clock) Drain line Mixing device Outlet Imlet 20 / 120 Ref. MKT-IM-055 / A - 20.03.2023...

  • Page 21: System Regeneration Cycle

    Installer manual Fleck 4600 SXT - MECH - Description System regeneration cycle Info This valve allows to do filtration and down flow regenerations. 3.5.1 Downflow regeneration cycle (5-cycles operation) Service — normal use Untreated water is directed down through the resin bed and up through the riser tube. The hardness ions attach themselves to the resin and are removed from the raw water by being exchanged on the resin beads by sodium ions.
  • Page 22 Installer manual Fleck 4600 SXT - MECH - Description SERVICE NORMAL USE BACKWASH Outlet Inlet Outlet Inlet Drain Valve Valve SECOND BACKWASH BRINE DRAW & SLOW RINSE (Double backwash unit only) Outlet Inlet Outlet Inlet Drain Drain Valve Valve From brine tank RAPID RINSE BRINE REFILL...

  • Page 23: Filter Cycle (3-Cycles Operation)

    Installer manual Fleck 4600 SXT - MECH - Description 3.5.2 Filter cycle (3-cycles operation) Service — normal use Untreated water is directed down through the filter media and up through the riser tube. The impurities are retained by the media. The water is filtered as it passes through the media. Backwash —...
  • Page 24 Installer manual Fleck 4600 SXT - MECH - Description SERVICE NORMAL USE BACKWASH Outlet Inlet Outlet Inlet Drain Valve Valve SERVICE RAPID RINSE NORMAL USE Outlet Inlet Outlet Inlet Drain Valve Valve Untreated water 24 / 120 Ref. MKT-IM-055 / A - 20.03.2023...

  • Page 25: Special Configurations

    Installer manual Fleck 4600 SXT - MECH - Description Special configurations 3.6.1 SXT controller - Configurations for softener and filter To configure the valve as softener or filter, the piston and the cycle cam must be set as shown below. 3.6.1.1 Softener Piston...
  • Page 26 Installer manual Fleck 4600 SXT - MECH - Description 3.6.1.2 Filter Filter piston PN 27077-US Plugged BLFC and injector Valve body without mixing device PN 28451-10 Black single backwash drive cam PN 17438 26 / 120 Ref. MKT-IM-055 / A - 20.03.2023...

  • Page 27: Mech Controller - Configurations For Volumetric And Time Clock Softeners

    Installer manual Fleck 4600 SXT - MECH - Description 3.6.2 MECH controller - Configurations for volumetric and time clock softeners To configure the valve as volumetric or time clock softener, the 24 hours gear, the skipper or program wheel and the meter must be set as shown below. 3.6.2.1 Volumetric Program wheel assy 8 m³...

  • Page 28: Options Available On The Valve

    Installer manual Fleck 4600 SXT - MECH - Description Options available on the valve Mixing device The valve can be equipped with a mixing device (1) whose function is to regulate the hardness of the water at the outlet. The mixing can be set from 0% to 50% of hard water (i.e. 0 turn = 0% of hard water with 100% of treated water and 1-½ turn = 50% of hard water with 50% of treated water).

  • Page 29: System Sizing

    Installer manual Fleck 4600 SXT - MECH - System sizing System sizing Recommended Injector/DLFC/BLFC-Valve configuration Brine Tank Resin Injector DLFC BLFC syst. Diameter volume [in] Color Color [gpm] DF [gpm] UF [gpm] 4600/ 5 – 8 0.125 1600 9 – 14 0.25 15 –...

  • Page 30: Determining The Required Volume Of Resin

    Installer manual Fleck 4600 SXT - MECH - System sizing Caution - material Risk of leakage due to unrespected service velocity ! Failure to respect the service velocity will lead to hardness leakage or even total softener inefficiency. Note that the water supply piping size may also be useful when estimating the nominal flow rate, since the size of the piping allows a maximum flow rate to pass.

  • Page 31: Resin Exchange Capacity And Capacity Of The Unit

    Installer manual Fleck 4600 SXT - MECH - System sizing 4.2.3 Resin exchange capacity and capacity of the unit The resin exchange capacity and capacity of the unit are two different things that should not be confused. The resin exchange capacity is the amount of Ca + and Mg + that can be retained by 1 litre of resin, which will depend on the resin type and salt dosage, whereas the capacity of the...

  • Page 32: Valve Configuration

    Installer manual Fleck 4600 SXT - MECH - System sizing To calculate the system mass capacity: × C with: capacity resin resin ex : system mass capacity [g as CaCO capacity : volume of resin [L] resin : resin exchange capacity [g/L as CaCO resin ex resin...

  • Page 33: Cycle Time Calculation

    Installer manual Fleck 4600 SXT - MECH - System sizing The DLFC installed on the valve has to limit the backwash flow rate to the above calculated flow rate. To determine the injector size: The velocities to be respected for brine draw and slow rinse are given on the resin manufacturer specifications.
  • Page 34 Installer manual Fleck 4600 SXT - MECH - System sizing To calculate the backwash duration: = (N × BV) / Q with: backwash BVbw DLFC : backwash duration [min] backwash : number of bed volume for backwash BVbw BV: bed volume [L] : drain line flow controller size [L/min] DLFC Info...

  • Page 35: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - System sizing Depending on the valve type, the fast rinse flow rate is controlled by the DLFC or it has about the same flow rate as in service. The fast rinse velocity can be the same as the service velocity, and the volume of water to be used for the fast rinse is generally between 1 and 10 BV depending on the salt dosage.

  • Page 36: Injector Flow Rates

    Installer manual Fleck 4600 SXT - MECH - System sizing Injector flow rates The following graphics represent the injectors flow rate as a function of the inlet pressure for the different injector sizes. 4.5.1 1600 injectors INJECTOR 0 Total Draw Rinse Rinse Draw...

  • Page 37: 1650 Injectors

    Installer manual Fleck 4600 SXT - MECH - System sizing INJECTOR 2 Total Rinse Draw Inlet pressure [bar] 4.5.2 1650 injectors INJECTOR 0 Total Rinse Draw Inlet pressure [bar] INJECTOR 1 Total Rinse Draw Inlet pressure [bar] Ref. MKT-IM-055 / A - 20.03.2023 37 / 120...
  • Page 38 Installer manual Fleck 4600 SXT - MECH - System sizing INJECTOR 2 Total Rinse Draw Inlet pressure [bar] 38 / 120 Ref. MKT-IM-055 / A - 20.03.2023...

  • Page 39: Installation

    Installer manual Fleck 4600 SXT - MECH - Installation Installation CAUTION Risk of injury due to electrical shock or pressurized elements ! It is strictly forbidden for not qualified personal, to accede to system’s internal parts to perform any kind of technical action. Be sure to disconnect the electrical power, close the water inlet and depressurize the system before opening the front cover to access internal parts ! Warnings...

  • Page 40: Water

    Installer manual Fleck 4600 SXT - MECH - Installation • keep the media tank in an upright position. Do not turn on its side, upside down, or drop it. Turning the tank upside down may cause media to enter the valve or might clog the upper screen;...

  • Page 41: Mechanical

    Installer manual Fleck 4600 SXT - MECH - Installation 5.3.4 Mechanical Caution - material Risk of damage due to wrong lubricant use ! Do not use petroleum-based lubricants such as vaseline, oils, or hydrocarbon-based lubricants. Use only approved silicone grease or soapy water ! •...

  • Page 42: Valve On Tank Assembly

    Installer manual Fleck 4600 SXT - MECH - Installation • total minimum pipe run to water heater of 3 m to prevent backup of HW into system; • always install check valve before water heater to protect the softener from HW return; •...

  • Page 43: Top-Mounted Valve Installation

    Installer manual Fleck 4600 SXT - MECH - Installation See chapter Components description and location to identify the connections. When pressurized, any composite tank will expand both vertically and circumferential. In order to compensate the vertical expansion, the piping connections to the valve must be flexible enough to avoid overstress on the valve and tank.
  • Page 44 Installer manual Fleck 4600 SXT - MECH - Installation • in any case, any failure caused by improper installations and/or piping connections may void the warranty of Pentair products; • in the same way, using lubricant* [ → Page 44] on the valve thread is not allowed and will void the warranty for the valve and tank.

  • Page 45: Block Diagram And Configuration Example

    Installer manual Fleck 4600 SXT - MECH - Installation Block diagram and configuration example Block diagram Pressure gauge Main inlet User’s line Check valve to prevent water harm Filter cartridge By-pass Pressure regulator Meter Suggested options Mixing device Can be integrated in the Drain line valve Brine line...

  • Page 46: Regeneration Flows

    Installer manual Fleck 4600 SXT - MECH - Installation Regeneration flows 5.8.1 SXT controller Metered immediate control A meter immediate control measures water usage and regenerates the system as soon as the calculated system capacity is depleted. The control calculates the system capacity by dividing the unit capacity (typically expressed in °TH*m volume) by the feedwater hardness and subtracting the reserve.

  • Page 47: Electrical Connections

    Installer manual Fleck 4600 SXT - MECH - Installation Electrical connections 5.9.1 SXT controller W1: Black W2: Red W3: Green W4: Yellow W5: Blue W6: Brown W7: Orange W8: Vioet W9: White C: Common NC: Normally closed NO: Normally open Transformer Info The microswitches are connected on C and NC.

  • Page 48: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Installation 5.9.2 MECH controller With lights N.O. Green lamp (Service) Microswitch N.C. Red lamp (Regeneration) Valve motor 220 V - 50 Hz Without lights Valve motor 220 V - 50 Hz 48 / 120 Ref.

  • Page 49: Bypassing

    Installer manual Fleck 4600 SXT - MECH - Installation 5.10 Bypassing A bypass valve system should be installed on all water conditioning systems. Bypass valves isolate the softener from the water system and allow unconditioned water to be used. Service or routine maintenance procedures may also require that the system is bypassed.
  • Page 50 Installer manual Fleck 4600 SXT - MECH - Installation Caution - material Risk of damage due to over-force ! The drain line plastic elbow must always be hand-tighten without using the elbow as a lever. The drain plastic elbow is not designed to support the weight of the tube. The tube has to have its own support.

  • Page 51: Overflow Line Connection

    Installer manual Fleck 4600 SXT - MECH - Installation Air gap Drain 5.12 Overflow line connection In the event of a malfunction, the brine tank overflow fitting will direct “overflow” to the drain instead of spilling on the floor. This fitting should be on the side of the brine tank. Most brine tank manufacturers feature a pre-drilled hole for the tank overflow connector.

  • Page 52: Brine Line Connection

    Installer manual Fleck 4600 SXT - MECH - Installation 5.13 Brine line connection Mandatory The brine line must be built with 3/8'' semi rigid piping ! Caution - material Risk of malfunction due to the use of wrong equipment ! Flexible and semi-flexible hoses may shrink because of the vacuum during brine draw. The brine line from the tank connects to the valve.

  • Page 53: Programming

    Installer manual Fleck 4600 SXT - MECH - Programming Programming SXT controller 6.1.1 Display 1. Service icon • Appears in service mode; • Flashes if a regeneration cycle has been queued. 2. Error / • Appears in case of error, see Troubleshooting, or in diagnostic mode, Information icon see.Diagnostic [ →...
  • Page 54 Installer manual Fleck 4600 SXT - MECH - Programming 3. Parameter Master programming and diagnostic modes: display • C: Unit capacity; • CD: Current day; • CT: Regeneration control type; • DF: Display format; • Dn, n=1 to 7: Day of week; •...

  • Page 55: Commands

    Installer manual Fleck 4600 SXT - MECH - Programming 8. Programming • Appears in programming modes. icon 6.1.2 Commands Info Menus are displayed in a defined and incremental order. If none of the buttons are pushed for 5 minutes in the Programming mode, or if there is a power failure, the controller returns to Service mode without saving.

  • Page 56: Master Programming Mode

    Installer manual Fleck 4600 SXT - MECH - Programming 1. Press simultaneously for 5 seconds to enter the menus sequence. 2. Select the number of days of override with 3. Press to validate the selection and advance to the next parameter. 6.1.4.3 Regeneration time (RT) Determine the time of regeneration at a time of low or no water usage.
  • Page 57 Installer manual Fleck 4600 SXT - MECH - Programming 6.1.5.1 Master programming mode chart Parameter Options Definition Note Display format US units Metric units Regeneration dF1b Std DF single Standard for 9000 Twin valve flow backwash dF2b Std DF double backwash FLtr Filter...
  • Page 58 Installer manual Fleck 4600 SXT - MECH - Programming Parameter Options Definition Note Fixed reserve 0 to 50 Only displayed for volumetric capacity regenerations and if set in reserve selection. Days override 0 to 99 Regeneration 00:00:00 to Hour Regeneration time will not appear time 23:59:59 unless regeneration day override is...
  • Page 59 Installer manual Fleck 4600 SXT - MECH - Programming 6.1.5.2 Entering master programming mode 1. Press and hold until the programming icon replaces the service icon and the parameter display reads TD. 2. Set the time to 12:01 PM with 3. Press to validate the selection and return to the service mode, or wait for 10 seconds.
  • Page 60 Installer manual Fleck 4600 SXT - MECH - Programming 1. Press to select the regeneration control type. 2. Press to validate the selection and move to the next parameter. 6.1.5.6 Number of tanks (NT) Select the number of tanks. Options: •...
  • Page 61 Installer manual Fleck 4600 SXT - MECH - Programming Info The filter capacity parameter is only available if the regeneration flow has been programmed for filter. The filter capacity can be set from 0.1 to 9’999 x1’000 Ltr if DF = Ltr or from 1 to 9’999 -> 1 to 9’999 x1’000 grains if DF = GAL.
  • Page 62 Installer manual Fleck 4600 SXT - MECH - Programming 6.1.5.11.1 Safety factor (SF) Info This parameter is not shown if RS is set to RC. The safety factor can be set from 0 to 50% of the initial volumetric capacity. 1.
  • Page 63 Installer manual Fleck 4600 SXT - MECH - Programming 1. Press to set the regeneration time. 2. Press to validate the selection and move to the next parameter. 6.1.5.14 Regeneration cycle step duration Set the duration in minutes of each regeneration cycle. Info Setting a cycle step to 0 will cause the controller to skip that step during regeneration, but keeps the following steps available.

  • Page 64: Filter Programming

    Installer manual Fleck 4600 SXT - MECH - Programming Options: • P0.7: ¾" paddle wheel meter (Standard setting for 4600, 5600 and 9100); • t0.7: ¾" turbine meter; • P1.0: 1" paddle wheel meter (Standard setting for 2750 and 9000); •...
  • Page 65 Installer manual Fleck 4600 SXT - MECH - Programming 6.1.7.2 Current flow rate (FR) Info The display is updated every second. 1. Current flow rate display (L/min or gpm depending on display format programmed): 6.1.7.3 Peak flow rate (PF) Info The controller registers the highest flow rate (L/min) since the last regeneration.

  • Page 66: Resetting The Controller

    Installer manual Fleck 4600 SXT - MECH - Programming 6.1.7.7 Software version (SV) Info Shows the version of the software used by the controller. 1. Software version display: 6.1.8 Resetting the controller Mandatory Once you have completed this operation, check all programming steps ! Info There are two options to reset: partial and hard reset.

  • Page 67: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Programming MECH controller 6.2.1 Time of day 1. Press the clutch (1). 2. Turn the hour wheel (2) to display the correct hour in the window (3). Ref. MKT-IM-055 / A - 20.03.2023 67 / 120...

  • Page 68: Volumetric

    Installer manual Fleck 4600 SXT - MECH - Programming 6.2.2 Volumetric 1. 24 hours wheel 2. Available capacity • Shows the system remaining capacity. 3. Program wheel • Defines the system capacity in m 4. Time of day • Shows the current time. 5.
  • Page 69 Installer manual Fleck 4600 SXT - MECH - Programming 6.2.2.1 Calculating the system capacity Set the capacity of soft water between two regenerations using the following formula: Water capacity [m ] = (Exchange capacity [m °tH] - Reserve capacity [m ]) / Water hardness [°tH] 6.2.2.2 Set the system capacity...

  • Page 70: Time Clock

    Installer manual Fleck 4600 SXT - MECH - Programming 6.2.3 Time clock 1. 24 hours wheel 2. Program wheel • Defines the number of days between two regenerations. 3. Time of day • Shows the current time. 4. Service position •...
  • Page 71 Installer manual Fleck 4600 SXT - MECH - Programming 6.2.3.1 Calculating the number of days between two regenerations Set the number of days between two regenerations using the following formulas: Water capacity [m ] = (Exchange capacity [m °tH] - Reserve capacity [m ]) / Water hardness [°tH] Number of days between regenerations = Water capacity [m ] / Daily water consumption [m...

  • Page 72: Salt Volume Per Regeneration

    Installer manual Fleck 4600 SXT - MECH - Programming 6.2.4 Salt volume per regeneration 6.2.4.1 Salt volume definition Set the weight of salt to be used during regeneration using the following table and formula. Salt weight Exchange capacity Salt weight [g/L [°tH/m [g/°tH/m...
  • Page 73 Installer manual Fleck 4600 SXT - MECH - Programming 6.2.4.2 Set the salt volume per regeneration 1. Calculate the weight of salt needed per regeneration, see Salt volume definition [ → Page 72]. 2. Remove the screws (2) and the cover (1). 3.

  • Page 74: Comissioning

    Installer manual Fleck 4600 SXT - MECH - Comissioning Comissioning Info This chapter is available for standard regeneration flows. Contact your supplier if the actual regeneration is not standard and if you need assistance. Water filling, draining and waterproofness inspection 7.1.1 SXT controller 1.

  • Page 75: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Comissioning 13. After the softener has been running a few minutes in service, proceed to hardness test on outlet water to make sure the water is treated as per requirements. The system is ready and in service. 7.1.2 MECH controller 1.

  • Page 76: Sodium Or Calcium Hypochlorite

    Installer manual Fleck 4600 SXT - MECH - Comissioning Thus, the softener may need to be disinfected after installation. Some softeners will require periodic disinfection during their normal lifetime. Consult the installing dealer for more information on softener disinfection. Depending on the conditions of use, the softener type, the type of ion exchanger and the disinfectant available, a choice can be made among the following methods.

  • Page 77: Operation

    Installer manual Fleck 4600 SXT - MECH - Operation Operation SXT controller 8.1.1 Display 8.1.1.1 Display during operation Examples: • Valve in service with day time: • Valve in service with volume remaining before regeneration: • Remaining days before next regeneration: •...

  • Page 78: Recommendations

    Installer manual Fleck 4600 SXT - MECH - Operation 8.1.2 Recommendations • Use only regeneration salts designed for water softening in accordance with EN973; • for optimal system operation, the use of clean salt, free from impurities, is recommended (for example salt pellets);...

  • Page 79: Operation During A Power Failure

    Installer manual Fleck 4600 SXT - MECH - Operation 8.1.4 Operation during a power failure • Current valve position, cycle step time elapsed, and time of day is stored 24 hours during a power failure, and will be restored upon power restoration; •...

  • Page 80: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Operation MECH controller 8.2.1 Display during operation 8.2.1.1 During service • Valve in service: 8.2.1.2 During regeneration During regeneration the display shows the current cycle step: • Backwash: • Brine draw & slow rinse: •...

  • Page 81: Recommendations

    Installer manual Fleck 4600 SXT - MECH - Operation 8.2.2 Recommendations • Use only regeneration salts designed for water softening upon regulation EN973; • for optimal system operation, the use of clean salt and impurities free is recommended (for example salt pellets); •...

  • Page 82: Maintenance

    Installer manual Fleck 4600 SXT - MECH - Maintenance Maintenance Mandatory Cleaning, maintenance and service operation shall take place at regular intervals and must be done by qualified personnel only in order to guarantee the proper functioning of the complete system. Report maintenance done in the Maintenance chapter of the User Guide document.

  • Page 83: Regeneration Test

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.1.3 Regeneration test 9.1.3.1 Valve used for softening 1. Check condition of brine tank and any associated equipment. 2. Check salt level in brine tank. 3. Initiate regeneration test. ð Check brine draw during brine draw stage. ð...
  • Page 84 Installer manual Fleck 4600 SXT - MECH - Maintenance Items 1 year 2 year 3 year 4 year 5 year Piston* Check/clean/ Check/clean/ Replace Check/clean/ Check/clean/ replace if replace if replace if replace if necessary necessary necessary necessary Seals & Check/clean/ Check/clean/ Replace...
  • Page 85 Installer manual Fleck 4600 SXT - MECH - Maintenance 9.2.1.2 MECH controller Items 1 year 2 year 3 year 4 year 5 year Injector & filter Clean Clean Clean Clean Clean/ replace if necessary BLFC*** Clean Clean Clean Clean Clean/ replace if necessary DLFC*** Clean...

  • Page 86: Valve Used For Filtration

    Installer manual Fleck 4600 SXT - MECH - Maintenance Items 1 year 2 year 3 year 4 year 5 year Valve to piping Check Check Check Check Check watertightness * Wear parts - durability strongly affected by raw water quality and regeneration frequency. ** Electronic parts –...
  • Page 87 Installer manual Fleck 4600 SXT - MECH - Maintenance Items 1 year 2 year 3 year 4 year 5 year Valve to piping Check Check Check Check Check watertightness * Wear parts - durability strongly affected by raw water quality and regeneration frequency. ** Electronic parts –...

  • Page 88: Recommendations

    Installer manual Fleck 4600 SXT - MECH - Maintenance ** Electronic parts – durability strongly affected by power source quality and stability. *** Elastomer durability is strongly affected by raw water concentration in chlorine and its derivative. Recommendations 9.3.1 Use original spare parts Caution - material Risk of damage due to use of non-genuine spare parts ! To ensure correct operation and safety of the device, only use original spare parts and...

  • Page 89: Controller Motor Replacement

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.2 Controller motor replacement 1. Using a flat screwdriver, unscrew (4) and remove the cover (3). 2. Disconnect the motor (1). 3. Using a Philips screwdriver, unscrew (2) and remove the motor (1). 4.

  • Page 90: Controller Replacement

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.3 Controller replacement Info Only for SXT controller. 1. Using a Philips screwdriver, unscrew (1) and remove the cover (2) paying attention for the wire. 2. Press the board clips (3) and release the controller cover (6). 3.
  • Page 91 Installer manual Fleck 4600 SXT - MECH - Maintenance Ref. MKT-IM-055 / A - 20.03.2023 91 / 120...

  • Page 92: Power Head Disassembly/Replacement

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.4 Power head disassembly/replacement 1. Disconnect the meter cable (1), if available. 2. Using a flat screwdriver, unscrew (5) and remove the cover (4). 3. Using a flat screwdriver, unscrew (3) and remove the washer (2). 4.

  • Page 93: Piston And/Or Brine Valve And/Or Seal And Spacer Kit Replacement

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.5 Piston and/or brine valve and/or seal and spacer kit replacement 1. Remove the power head, see Power head disassembly/replacement. 2. Using a flat screwdriver or an 8 mm wrench, unscrew (3) and remove the top plate (4). 3.
  • Page 94 Installer manual Fleck 4600 SXT - MECH - Maintenance Item Part number Description Packaging quantity 12763 Stuffer 94 / 120 Ref. MKT-IM-055 / A - 20.03.2023...

  • Page 95: Micro-Swithes And/Or Drive Cam Replacement

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.6 Micro-swithes and/or drive cam replacement 9.4.6.1 SXT controller 1. Using a Philips screwdriver, unscrew (1) and remove the cover (2). 2. Disconnect the wire on the microswitches (6). 3. Using a Philips screwdriver, unscrew (8). 4.
  • Page 96 Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.6.2 MECH controller 1. Using a flat screwdriver, unscrew (2) and remove the cover (1). 2. Using a Phillips screwdriver, unscrew (5) and extract the protection plate (4) and the micro- switch (3).

  • Page 97: Brine Cam Replacement

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.7 Brine cam replacement 1. Remove the power head, see Power head disassembly/replacement. 2. Using a flat screwdriver, unscrew (1). 3. Remove the washer (2) and the brine cam (3). 4. Change the brine cam (3). 5.

  • Page 98: Injector Cleaning

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.8 Injector cleaning 1. Using a flat screwdriver or an 8 mm wrench, remove the screws (6). 2. Remove the cap injector (5). 3. Remove the seal (4). 4. Remove the filter (2). 5.

  • Page 99: Blfc Cleaning

    Installer manual Fleck 4600 SXT - MECH - Maintenance 9.4.9 BLFC cleaning 1. Using a wrench, remove the BLFC holder (1). 2. Using pliers, remove the grid (4) from BLFC holder (1). 3. Remove the BLFC washer (3) from the grid (4). 4.

  • Page 100: Troubleshooting

    Installer manual Fleck 4600 SXT - MECH - Troubleshooting Troubleshooting Problem Cause Solution Softener fails to Interrupted power or switched off Restore the controller and regenerate automatically power source. connect to constant power source. Disconnected/faulty meter cable. Check connections in the power head and on the meter cover.
  • Page 101 Installer manual Fleck 4600 SXT - MECH - Troubleshooting Problem Cause Solution Resin loss through drain Top distributor missing or broken. Add or replace the top distributor. line Air in water system. Ensure the presence of air check system in the brine tank. Improperly sized drain line flow Size the drain line flow control control.
  • Page 102 Installer manual Fleck 4600 SXT - MECH - Troubleshooting Problem Cause Solution Softener fails to draw Plugged drain line flow control. Clean drain line flow control. brine Plugged injector and/or filter. Clean or replace injector and/or filter. Low water pressure. Raise inlet pressure to 1.8 bar minimum.

  • Page 103: Error Detection

    Installer manual Fleck 4600 SXT - MECH - Troubleshooting 10.1 Error detection Info Only for SXT controller. Errors codes appear on the service display. Info It can take up to 1 minute before an error can be detected and displayed. 10.1.1 Motor stall/cam sense error Info The valve drive takes more than 6 minutes to go to the next regeneration cycle and the...

  • Page 104: Motor Run-On Error/Cycle Sense Error

    Installer manual Fleck 4600 SXT - MECH - Troubleshooting 10.1.2 Motor run-ON error/cycle sense error Info The valve performed an unforeseen cycle. This error message is only valid until controller version 2.6. 1. Unplug the unit and plug back in. Allow the controller to attempt to find position again.

  • Page 105: Memory Error

    Installer manual Fleck 4600 SXT - MECH - Troubleshooting 10.1.4 Memory error Info The controller board has a memory failure. 1. Perform a master reset. 2. Reconfigure the system via master programming mode. 3. Step the valve through a manual regeneration. 4.

  • Page 106: Spare Parts And Options

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options Spare parts and options 11.1 Valve parts list Item Part number Description Packaging quantity 29116 End plug retainer kit 4600 24116-US Piston assy 4600/5600 106 / 120 Ref. MKT-IM-055 / A - 20.03.2023...
  • Page 107 Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity 24117-US Piston assy 4600/5600 LWU 18928 Piston assy 4600/5600 Filter 27077-US Piston assy 4600SXT/5600SXT/6600/6700 DF 27077-01-US Piston assy 4600 SXT HW 24944 S&S Kit 4600/9000 HW Upper 24115 S&S Kit Residential...

  • Page 108: Power Head Parts List

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options 11.2 Power head parts list 11.2.1 SXT controller Item Part number Description Packaging quantity PH56SXT-003 PH 4600/5600 SXT Eco 25329 Drive Motor assy 24V/50-60Hz 29131 Kit back cover black 4600/5600/6600 13296SP Screw 108 / 120...

  • Page 109: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity 29132 Repair kit for residential SXT power head BU28723 Front panel & label SXT 40422SP Wire Nut Tan 19791-01SP Turbine Meter Cable elec 0.450 m BR43346-E0 Circuit board SXT programmed eco 11.2.2...
  • Page 110 Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity 29134 Repair kit for residential power head 8 & 40 m 29138 Repair kit for residential power head Fast Regeneration 24377SP Red Light 4600/5600 230V 24378SP Green Light 4600/5600 230V 29130...

  • Page 111: Safety Brine Valves List

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity 29131 Kit back cover black 4600/5600/6600 26775 Timer Motor Assy 230V/50Hz 1/30 RPM 26877 Timer Motor Assy 24V/60Hz 1/30 RPM 26778 Timer Motor Assy 24V/50Hz 1/30 RPM BU28670 Kit microswitch electronic residential 29136...

  • Page 112: Safety Brine Valves 2310 Parts List

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options 11.4 Safety brine valves 2310 parts list Item Part number Description Packaging quantity 60014SP Body Assy SBV 2310 18312SP Retainer, drain 19805SP Nut SBV 2310 Plastic 60068-30SP New Float assy 2310 10150SP Grommet pass rod 2300/2310/2350 11.5...

  • Page 113: 1" Bsp Female Brass Bypass With Mixing

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity BU28502 Bypass 1” BSP Female Stainless Steel 13709 Coupling Assy residential 29104 Kit mounting/adapter 2 clips & 2 screws residential 11.5.2 1" BSP female brass bypass with mixing Item Part number Description...

  • Page 114: Plastic Bypass (No Yoke)

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity 24509-02 Mixing assy 4600 Hot Water 11.5.3 Plastic bypass (no yoke) Item Part number Description Packaging quantity BU26054 Bypass plastic 29104 Kit mounting/adpater 2 clips & 2 screws residential/ 9000/9100 18706-10 Yoke, 1", BSP, male, plastic...

  • Page 115: Distribution Systems Parts List

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options 11.6 Distribution systems parts list Item Part number Description Packaging quantity 27827 Distributor assy, 1” high flow 1 m 10 25645 Distributor assy, 1” high flow 1 m 95 BU28508 Distributor assy, 1” high flow HW 1 m 10 21675 Distributor assy, 1”...

  • Page 116: Air Checks List

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options 11.7 Air checks list Item Brine Part Description Packaging system number quantity 1600 18168 Air checks 500A, 0.915m 1600 26773 Air checks 500A, 1m25 1600 23473 Air checks 500 HW 11.8 Meters parts list 11.8.1...

  • Page 117: Mech Controller

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options 11.8.2 MECH controller Item Part number Description Packaging quantity 24107 Meter assy ¾” 8 m³ plastic 29102 Meter cover assy 8 m³ with impeller 29103 Meter assy ¾” 40 m³ with meter cable 24106 Meter assy ¾”...

  • Page 118: Additional Parts List

    Installer manual Fleck 4600 SXT - MECH - Spare parts and options Item Part number Description Packaging quantity 29105 Impeller & oring kit for meter assy 3/4” 26006-10 Eco bypass assy 8 m³ & red handle HW 29118 Meter cover assy brass with impeller 26007-10 Eco bypass assy 40 m³...

  • Page 119: Disposal

    This will help to reduce the impact on the environment, health, safety and help to promote recycling. Pentair does not collect used product for recycling. Contact your local recycling center for more information.
  • Page 120 WWW.PENTAIR.EU All indicated Pentair trademarks and logos are property of Pentair. Third party registered and unregistered trademarks and logos are the property of their respective owners. © 2023 Pentair. All rights reserved.

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