Pentair FLECK 2850 SXT Installer Manual
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Pentair FLECK 2850 SXT Installer Manual

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FLECK
2850 SXT
INSTALLER
MANUAL
WATER PURIFICATION

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Summary of Contents for Pentair FLECK 2850 SXT

  • Page 1 FLECK 2850 SXT INSTALLER MANUAL WATER PURIFICATION...

  • Page 2: Table Of Contents

    Installer manual Fleck 2850 SXT - Table of Contents Table of Contents Generalities ..................Scope of the documentation ............... Release management ................. Manufacturer identifier, product ..............Intended use ....................Abbreviations used ..................Norms......................1.6.1 Applicable norms ....................1.6.2 Available certificates...................
  • Page 3 Installer manual Fleck 2850 SXT - Table of Contents Sizing a softener (single unit) ..............27 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 2850 SXT - Table of Contents 6.5.1 Master programming mode chart ..............6.5.2 Entering master programming mode..............6.5.3 Display format mode (DF) ................... 6.5.4 Regeneration flow (RF) ..................6.5.5 Regeneration control type (CT) ................6.5.6 Number of tanks (NT)..................
  • Page 5 Installer manual Fleck 2850 SXT - Table of Contents General system inspection................69 9.1.1 Water quality ....................... 9.1.2 Mechanical Checks ..................... 9.1.3 Regeneration test....................Recommended maintenance plan .............. 71 9.2.1 Valve used for softening..................9.2.2 Valve used for filtration ..................
  • Page 6 Installer manual Fleck 2850 SXT - Table of Contents 11.12 Other components list................. 102 Disposal................... 103 6 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 7: Generalities

    Installer manual Fleck 2850 SXT - Generalities Generalities Scope of the documentation The documentation provides the necessary information for appropriate use of the product. It informs the user to ensure efficient execution of the installation, operation or maintenance procedures. The content of this document is based on the information available at the time of publication. The original version of the document was written in English.

  • Page 8: Intended Use

    Installer manual Fleck 2850 SXT - Generalities Intended use The device is intended for industry environment use only and it is purpose-built for water treatment. Abbreviations used Assy Assembly BLFC Brine Line Flow Controller Brine Valve Cold Water Down Flow...

  • Page 9: Available Certificates

    Page 86]. If the problem persists contact your supplier. Copyright and Trademarks 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. © 2020 Pentair. All rights reserved.

  • Page 10: Limitation Of Liability

    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 11: Scan & Service Application

    Installer manual Fleck 2850 SXT - Generalities 1.10 Scan & Service application Scan & Service mobile application is the ideal support for the maintenance person in his daily business. A simple scan of an identification (ID) label (1) present on the valve with a smartphone gives an instantaneously access to all updated information related to the product, such as: •...

  • Page 12: Safety

    Installer manual Fleck 2850 SXT - 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 13: Serial Label Location

    Installer manual Fleck 2850 SXT - 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 14: Material

    Installer manual Fleck 2850 SXT - Safety 2.3.2 Material The following points must be observed to ensure proper operation of the system and the safety of user: • be careful of high voltages present on the transformer (100 – 240 V);...

  • Page 15: Description

    Installer manual Fleck 2850 SXT - Description Description Technical specifications Design specifications/ratings Valve body Brass Rubber components EP or EPDM Weight (valve with controller) 4.6 kg (max) Recommended operating pressure 1.8 - 8.6 bar Maximum inlet pressure 8.6 bar Hydrostatic test pressure...
  • Page 16 Installer manual Fleck 2850 SXT - Description Electrical Transformer input voltage 100 to 240 VAC Input supply frequency 50 to 60 Hz Transformer output voltage 24 VAC, 60 VA Controller input voltage 24 VAC Motor input voltage 24 VAC Controller max. power consumption...

  • Page 17: Performance Flow Rate Characteristics

    Installer manual Fleck 2850 SXT - Description Performance flow rate characteristics The graph shows the pressure drop created by the valve itself at different flow rates. It allows predetermining the maximum flow rate going through the valve depending on the system settings (inlet pressure etc).

  • Page 18: Outline Drawing

    Installer manual Fleck 2850 SXT - Description Outline drawing 18 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 19: Components Description And Location

    Installer manual Fleck 2850 SXT - Description Components description and location Power head Meter Drain line Outlet Brine valve Brine line Injector block Inlet Ref. MKT-IM-030 / C - 12.05.2020 19 / 104...
  • Page 20 Installer manual Fleck 2850 SXT - Description Camshaft AC motor Piston SXT controller Micro-switches Regeneration button Display Up button Down button 20 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 21: System Regeneration Cycle

    Installer manual Fleck 2850 SXT - 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 being exchanged on the resin beads by sodium ions.
  • Page 22 Installer manual Fleck 2850 SXT - Description SERVICE NORMAL USE BACKWASH Outlet Inlet Outlet Inlet Drain Valve Valve BRINE DRAW & SLOW RINSE RAPID RINSE Outlet Inlet Outlet Inlet Drain Drain Valve Valve From brine tank BRINE TANK REFILL PAUSE & DELAY...

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

    Installer manual Fleck 2850 SXT - 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.
  • Page 24 Installer manual Fleck 2850 SXT - 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, with WBP piston only 24 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 25: Configurations For Softener, No By Pass And Filter

    Installer manual Fleck 2850 SXT - Description Configurations for softener, no by pass and filter 3.6.1 Downflow softener The valve is mounted with the SXT power head 2510/2750/2850, part number VCPHINDUS1 and a 1600 or 1700/1710 injector assembly, part numbers 29247, 29181, 29182 or 29248 for HW.

  • Page 26: Automatic Filter

    Installer manual Fleck 2850 SXT - Description 3.6.3 Automatic filter The valve is mounted with the SXT power head 2510/2750/2850, part number VCPHINDUS1 and a kit injector for filter customization 2750/2850/2910, part number 29249. SXT power head 2510/2750/2850 Kit injector for filter...

  • Page 27: System Sizing

    Installer manual Fleck 2850 SXT - 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] 2850/ 35 – 42 White 0.50 1600 43 – 56...

  • Page 28: Determining The Required Volume Of Resin

    Installer manual Fleck 2850 SXT - 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 29: Resin Exchange Capacity And Capacity Of The Unit

    Installer manual Fleck 2850 SXT - 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...

  • Page 30: Valve Configuration

    Installer manual Fleck 2850 SXT - 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...

  • Page 31: Cycle Time Calculation

    Installer manual Fleck 2850 SXT - 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 32 Installer manual Fleck 2850 SXT - System sizing To calculate the backwash duration: = (N × BV) / Q with: ackwash BVbw DLFC : backwash duration [min] backwash : number of bed volume for backwash BVbw BV: bed volume [L]...

  • Page 33: Salt Amount Definition

    Installer manual Fleck 2850 SXT - 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 34: 1600 Injectors

    Installer manual Fleck 2850 SXT - System sizing 4.4.1 1600 injectors INJECTOR 1 Total Rinse Draw Inlet pressure [bar] INJECTOR 2 Total Rinse Draw Inlet pressure [bar] INJECTOR 3 Total Rinse Draw Inlet pressure [bar] 34 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 35: 1650 Injectors

    Installer manual Fleck 2850 SXT - System sizing 4.4.2 1650 injectors INJECTOR 1 Total Rinse Draw Inlet pressure [bar] INJECTOR 2 Total Rinse Draw Inlet pressure [bar] INJECTOR 3 Total Rinse Draw Inlet pressure [bar] Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 36: 1700/1710 Injectors

    Installer manual Fleck 2850 SXT - System sizing 4.4.3 1700/1710 injectors INJECTOR 3C Total Rinse Rinse Draw Draw Inlet pressure [bar] INJECTOR 4C Total Rinse Draw Inlet pressure [bar] INJECTOR 5C Total Rinse Draw Inlet pressure [bar] 36 / 104...

  • Page 37: Installation

    Installer manual Fleck 2850 SXT - 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.

  • Page 38: Water

    Installer manual Fleck 2850 SXT - 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 39: Mechanical

    Installer manual Fleck 2850 SXT - 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 40: Valve Connection To Piping

    Installer manual Fleck 2850 SXT - Installation Valve connection to piping The connections should be hand tightened using PTFE (plumber’s tape) on the threads if using the threaded connection type. In case of heat welding (metal type connection), the connections should not be made to the valve when soldering.
  • Page 41 Installer manual Fleck 2850 SXT - Installation • excessively long and non-stretched flexible piping connection will create stresses on the valve and tank assembly when the system is pressurized, as illustrated in the below picture: on the left the assembly when the system is unpressurised, on the right the flexible piping connection when put under pressure tends to lift up the valve when stretching up.

  • Page 42: Side-Mounted Valve Installation

    Installer manual Fleck 2850 SXT - Installation 5.5.2 Side-mounted valve installation Valid for location having a reduced height. Inlet Inlet shutoff Manual shutoff valve bypass Rubber expansion joint Outlet Fleck meter Tank Outlet shutoff Drain line Support tripod Rubber expansion joint •...

  • Page 43: Block Diagram And Configuration Example

    Installer manual Fleck 2850 SXT - 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 Drain line Brine line Valve Brine tank...
  • Page 44 Installer manual Fleck 2850 SXT - Installation Side mounted configuration example V285SR-001 A2727-63 61415-20 BV1600: 60067-03 BV1700: 25453 BV1600: 18168(CW) A-2816-63 23473(HW) BV1700: 18979(CW) 18980(HW) 44 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 45: Electrical Connections

    Installer manual Fleck 2850 SXT - Installation Electrical connections 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 microswitchs are connected on C and NC.

  • Page 46: Bypassing

    Installer manual Fleck 2850 SXT - Installation 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 47: Overflow Line Connection

    Installer manual Fleck 2850 SXT - Installation Mandatory Waste connections or the drain outlet shall be designed and constructed to provide connection to the sanitary waste system through an air-gap of 2 pipe diameters or 50.8 mm (2"), whichever is larger. Caution - material Risk of damage due to lack of gap !

  • Page 48: Brine Line Connection

    Installer manual Fleck 2850 SXT - Installation Overflow fitting Drain tubing Secure hose in place Air gap Drain Caution - material Risk of flooding due to lack of floor drain ! Floor drain is always recommended to avoid flooding in case of overflow.

  • Page 49: Programming

    Installer manual Fleck 2850 SXT - Programming Programming 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 [ → Page 86], or in Information icon diagnostic mode, see.Diagnostic [...
  • Page 50 Installer manual Fleck 2850 SXT - Programming Regeneration cycles: • B1: First backwash (for dF2b regeneration flow); • B2: Second backwash (for dF2b regeneration flow); • BD: Brine draw; • BF: Brine fill; • BW: Backwash; • RR: Rapid rinse.

  • Page 51: Commands

    Installer manual Fleck 2850 SXT - Programming 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 52: Day Of Override (Do)

    Installer manual Fleck 2850 SXT - Programming 6.4.2 Day of override (DO) 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.

  • Page 53: Master Programming Mode Chart

    Installer manual Fleck 2850 SXT - Programming 6.5.1 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 To be used with standard piston only.

  • Page 54: Entering Master Programming Mode

    Installer manual Fleck 2850 SXT - Programming Parameter Options Definition Note First backwash 0 to 199 Minute Only displayed for dF2b regeneration flow. In case of dF1b regeneration flow, the screen shows BW. Brine draw BD consist of time for brine draw and slow rinse.

  • Page 55: Display Format Mode (Df)

    Installer manual Fleck 2850 SXT - Programming 6.5.3 Display format mode (DF) Select the unit of measure. Options: • GAL: U.S. gallons and 12-Hour AM/PM; • Ltr: litres and 24-Hour. 1. Press to select the unit. 2. Press to validate the selection and move to the next parameter.

  • Page 56: Number Of Tanks (Nt)

    Installer manual Fleck 2850 SXT - Programming 6.5.6 Number of tanks (NT) Select the number of tanks. Options: • NT 1: single tank system; • NT 2: double tanks system. Mandatory Due to the 2850  valve being designed for single tank system only, set valve type to 1.

  • Page 57: Feedwater Hardness (H)

    Installer manual Fleck 2850 SXT - Programming 6.5.9 Feedwater hardness (H) Set the feedwater hardness. Mandatory Enter the feedwater hardness in °TH, ppm or grains of hardness for softener system. Info The feedwater hardness parameter is only available if the controller type has been programmed for volumetric regeneration.

  • Page 58: Days Override (Do)

    Installer manual Fleck 2850 SXT - Programming 6.5.10.2 Reserve capacity (RC) Info This parameter is not shown if RS is set to SF. The fixed reserve capacity can be set up to a volume equivalent to 50% of the initial volumetric capacity.

  • Page 59: Regeneration Cycle Step Duration

    Installer manual Fleck 2850 SXT - Programming 6.5.13 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 60: Flow Meter Type (Fm)

    Installer manual Fleck 2850 SXT - Programming 1. Press to set the current day. 2. Press to validate the selection and move to the next parameter. 6.5.16 Flow meter type (FM) Select the flow meter type. Options: • P0.7: ¾" paddle wheel meter (Standard setting for 4600, 5600 and 9100);...

  • Page 61: Meter Pulse (K)

    Installer manual Fleck 2850 SXT - Programming 6.5.17 Meter pulse (K) Set the meter pulse for a non-standard flow meter. Info The meter pulse parameter is only available if the Gen option has been set in flow meter type selection.

  • Page 62: Hours Since Last Regeneration (Hr)

    Installer manual Fleck 2850 SXT - Programming 1. Peak flow rate display: 6.7.4 Hours since last regeneration (HR) Info Shows the number of hours since the last regeneration, indicating the length of the current service cycle. 1. Hours since last regeneration display: 6.7.5...

  • Page 63: Software Version (Sv)

    Installer manual Fleck 2850 SXT - Programming 6.7.7 Software version (SV) Info Shows the version of the software used by the controller. 1. Software version display: 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 64: Commissioning

    Installer manual Fleck 2850 SXT - Commissioning Commissioning 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 1. With the bypass still in bypass position (inlet and outlet of the valve closed), plug in the SXT controller to the power source.

  • Page 65: Sanitization

    Installer manual Fleck 2850 SXT - Commissioning The system is ready and in service. Sanitization 7.2.1 Disinfection of water softeners The materials of construction of the modern water softener will not support bacterial growth, nor will these materials contaminate a water supply. In addition, during normal use, a softener may become polluted with organic matter, or in some cases with bacteria from the water supply.

  • Page 66: Electro Chlorination

    Installer manual Fleck 2850 SXT - Commissioning 7.2.3 Electro chlorination Valves or systems already equipped with an electrochlorinator device or system will be sanitized during the brine draw phase. 66 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 67: Operation

    Installer manual Fleck 2850 SXT - Operation Operation Display 8.1.1 Display during operation Examples: • Valve in service with day time: • Valve in service with volume remaining before regeneration: • Remaining days before next regeneration: • In volumetric regeneration flow, reserve 1223 litres remaining: •...

  • Page 68: Recommendations

    Installer manual Fleck 2850 SXT - Operation 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 69: Maintenance

    Installer manual Fleck 2850 SXT - 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 mainteance done in the Maintenance chapter of the User Guide document.

  • Page 70: Regeneration Test

    Installer manual Fleck 2850 SXT - 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.

  • Page 71: Recommended Maintenance Plan

    Installer manual Fleck 2850 SXT - Maintenance Recommended maintenance plan 9.2.1 Valve used for softening Items 1 year 2 year 3 year 4 year 5 year Injector & filter Clean Clean Clean Clean Clean/ replace if necessary BLFC*** Clean Clean...
  • Page 72 Installer manual Fleck 2850 SXT - Maintenance Items 1 year 2 year 3 year 4 year 5 year Valve Check Check Check Check Check watertightness Valve to piping Check Check Check Check Check watertightness * Wear parts - durability strongly affected by raw water quality and regeneration frequency.

  • Page 73: Valve Used For Filtration

    Installer manual Fleck 2850 SXT - Maintenance 9.2.2 Valve used for filtration Items 1 year 2 year 3 year 4 year 5 year DLFC*** Clean Clean Clean Clean Clean/ replace if necessary Bypass (if Clean Clean Clean Clean Clean/replace present,...

  • Page 74: Recommendations

    Installer manual Fleck 2850 SXT - Maintenance 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 accessories recommended by the manufacturer.

  • Page 75: Power Head And/Or Motor Replacement

    Installer manual Fleck 2850 SXT - Maintenance 9.4.2 Power head and/or motor replacement 1. Using a flat screwdriver, unscrew (2) and open the cover (1). 2. Open the controller (3). 3. Using pliers, remove the circlip (11) and free the arm (4). 4. Using a flat screwdriver or a 11 mm wrench remove (10).

  • Page 76: Controller Replacement

    Installer manual Fleck 2850 SXT - Maintenance 9.4.3 Controller replacement 1. Using a flat screwdriver, unscrew (2) and open the cover (1). 2. Open the controller (3). 3. Press on the clips (5) and remove the controller cover (4). 4. Disconnect the controller (7).

  • Page 77: Piston And/Or Seal And Spacer Kit Replacement

    Installer manual Fleck 2850 SXT - Maintenance 9.4.4 Piston and/or seal and spacer kit replacement 1. Remove the power head, see Power head and/or motor replacement [ Page 75]. → 2. Using pliers, remove the piston (4). Caution - material Risk of damage on piston due to wrench use ! Usind a wrench on piston rod coating will cause leakages.
  • Page 78 Installer manual Fleck 2850 SXT - Maintenance 78 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 79: Micro-Switches Replacement

    Installer manual Fleck 2850 SXT - Maintenance 9.4.5 Micro-switches replacement Info This procedure is valid for AC and DC motor assemblies. 1. Using a flat screwdriver, unscrew (2) and open the cover (1). 2. Open the SXT controller  (3), or, using a Philips screwdriver, unscrew (4) and open the SXT controller (5).
  • Page 80 Installer manual Fleck 2850 SXT - Maintenance 80 / 104 Ref. MKT-IM-030 / C - 12.05.2020...

  • Page 81: Cams Replacement

    Installer manual Fleck 2850 SXT - Maintenance 9.4.6 Cams replacement Info This procedure is valid for AC and DC motor assemblies. 1. Remove the micro-switches, see Micro-switches replacement. 2. Using pliers, remove the circlip (1) and free the arm (2).

  • Page 82: Injector Cleaning

    Installer manual Fleck 2850 SXT - Maintenance 9.4.7 Injector cleaning 1. Using a 16 mm wrench, unscrew the nut (3) to release the tube (4). 2. Using a 8 mm wrench, unscrew (1) and remove the injector assembly (2). 3. Using flat screwdrivers, remove the injector nozzle (7) and the injector throat (8) from the injector body (10).

  • Page 83: Blfc Cleaning

    Installer manual Fleck 2850 SXT - Maintenance 9.4.8 BLFC cleaning 1. Using a 16 mm wrench, unscrew the nuts (2) and remove the tube (1). 2. Using an 18 mm wrench, remove the BLFC holder (3). 3. Using pliers, remove the cage (4) from the BLFC holder (3).

  • Page 84: Dlfc Cleaning

    Installer manual Fleck 2850 SXT - Maintenance 9.4.9 DLFC cleaning 1. Using a 38 mm wrench, remove the DLFC holder (2). 2. Using a flat screwdriver, remove the DLFC washer (1) from DLFC holder (2). 3. Clean or change the DLFC washer (1).

  • Page 85: Valve On Tank Assembly

    Installer manual Fleck 2850 SXT - Maintenance 9.4.10 Valve on tank assembly 1. Lubricate the seals with approved silicone grease. 2. Spin the valve (1) onto the tank (2), ensuring the threads are not cross-threaded. 3. Rotate the valve (1) clockwise and freely, without using force until it comes to a stop.

  • Page 86: Troubleshooting

    Installer manual Fleck 2850 SXT - 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 87 Installer manual Fleck 2850 SXT - 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.
  • Page 88 Installer manual Fleck 2850 SXT - 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 89: Error Detection

    Installer manual Fleck 2850 SXT - Troubleshooting 10.1 Error detection 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 board hasn’t received expected signals from microswitches.

  • Page 90: Motor Run-On Error/Cycle Sense Error

    Installer manual Fleck 2850 SXT - 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 91: Memory Error

    Installer manual Fleck 2850 SXT - 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. If the error reoccurs, unplug the unit.

  • Page 92: Spare Parts And Options

    Installer manual Fleck 2850 SXT - Spare parts and options Spare parts and options 11.1 Valve parts list Item Part number Description Packaging quantity Brine valve (see Brine valve parts list [ → Page 97]) 25171-1.2 DLFC 1” NPT - ¾” BSP Assy 1.2 gpm 2850/2910/9500 25171-1.5...
  • Page 93 Installer manual Fleck 2850 SXT - Spare parts and options Item Part number Description Packaging quantity 25581-9 DLFC 1in NPT - 3/4in BSP assy 9 gpm 2850/2910/9500 25581-10 DLFC 1in NPT - 3/4in BSP assy 10 gpm 2850/2910/9500 25581-12 DLFC 1in NPT - 3/4in BSP assy 12 gpm 2850/2910/9500...

  • Page 94: Power Head Parts List

    Installer manual Fleck 2850 SXT - Spare parts and options 11.2 Power head parts list Item Part number Description Packaging quantity VCPHINDUS1 Power head 2510/2750/2850/2910 26260 Transformer 24 VAC, 60 VA 11545 Power cord European black BU28712-01 Timer assy SXT 2510/2750/2850/2910 BU28600...

  • Page 95: Injector Parts List

    Installer manual Fleck 2850 SXT - Spare parts and options Item Part number Description Packaging quantity 28704SP Plug 13547SP Strain relief 24 V 11.3 Injector parts list 11.3.1 1600/1650 injector parts list Item Part number Description Packaging quantity 29247 Injector assy 1650 #00 (#000 #0) 2750/2850/2910...

  • Page 96: 1700/1710 Injector Parts List

    Installer manual Fleck 2850 SXT - Spare parts and options Item Part number Description Packaging quantity 10226-0SP Inj throat 1600 HW #0 10226-1SP Inj throat 1600 HW #1 10226-2SP Inj throat 1600 HW #2 10226-3SP Inj throat 1600 HW #3...

  • Page 97: Brine Valve Parts List

    Installer manual Fleck 2850 SXT - Spare parts and options Item Part number Description Packaging quantity 14801-06CSP Inj nozzle 1700/1710 6C 14801-07CSP Inj nozzle 1700/1710 7C 29249 Kit injector for filter customization 2750/2850/2910 11.4 Brine valve parts list Item Part number...
  • Page 98 Installer manual Fleck 2850 SXT - Spare parts and options Item Part number Description Packaging quantity 19337 Brine tube 1600 2850 NBP plastic 16508-01 Brine tube 1600/1650 2850 WBP 26991-1.2 BV 1700 assy 2750 NBP/2850 WBP/2910 1.20 gpm 26991-2.0 BV 1700 assy 2750 NBP/2850 WBP/2910 2.00 gpm 26991-4.0...

  • Page 99: Safety Brine Valves List

    Installer manual Fleck 2850 SXT - Spare parts and options 11.5 Safety brine valves list 2300 2310 2350 BV 44 Item Brine Part Description Packaging system number quantity 1600 27833 Safety brine valve 2300, without air check 27834 Safety brine valve 2300, HW, without air check...

  • Page 100: Distribution Systems Parts List

    Installer manual Fleck 2850 SXT - Spare parts and options Item Part number Description Packaging quantity 60014SP Safety brine body, 2310 11183-01SP O-ring 19625SP Brine Valve 1650 plastic nut assy 18312SP Retainer, drain 19805SP Plastic SBV 2310 Nut 60068-30SP New Float assy 2310...

  • Page 101: Air Checks List

    Installer manual Fleck 2850 SXT - Spare parts and options 11.8 Air checks list Item Brine Part Description Packaging system number quantity 1600 18168 Air checks 500A, 915mm (36") 26773 Air checks 500A, 1m25 23473 Air checks 500 HW, 915mm (36")915/9...

  • Page 102: Ce Compliance Parts List

    Installer manual Fleck 2850 SXT - Spare parts and options 11.11 CE compliance parts list Item Part number Description Packaging quantity Kit 8 Top distributor 2” & pin assy Kit 9 Top distributor 2” & pin assy HW 11.12 Other components list...
  • Page 103 This will help to reduce the impact on the environment, health, safety and help to promote recycling. Pentair do not collect used product for recycling. Contact your local recycling center for more information.
  • Page 104 www.pentairaquaeurope.com...

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