Pentair FLECK 2910 NXT Installer Manual
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Pentair FLECK 2910 NXT Installer Manual

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FLECK
2910 NXT
INSTALLER
MANUAL
WATER PURIFICATION

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Summary of Contents for Pentair FLECK 2910 NXT

  • Page 1 FLECK 2910 NXT INSTALLER MANUAL WATER PURIFICATION...

  • Page 2: Table Of Contents

    Installer Manual Fleck 2910 - NXT - Table of content Table of content Generalities ......... . 7 1.1.
  • Page 3 Installer Manual Fleck 2910 - NXT - Table of content 4.2.3. Resin exchange capacity and capacity of the unit ....25 4.2.4. Valve configuration ......... 27 4.2.5.
  • Page 4 Installer Manual Fleck 2910 - NXT - Table of content 6.4. Basic programming ........56 6.4.1.
  • Page 5 Installer Manual Fleck 2910 - NXT - Table of content Commissioning ........76 7.1.
  • Page 6 Installer Manual Fleck 2910 - NXT - Table of content Troubleshooting ........94 10.1.

  • Page 7: Generalities

    First edition. Address change, Bleam information and valve on 23.05.2018 BRY/FLA tank assembly. 1.3. Manufacturer identifier, product Manufacturer: Pentair International LLC Avenue de Sevelin 18 1004 Lausanne Switzerland Product: Fleck 2910 - NXT 1.4. Intended use The device is intended for industry environment use only and it is purpose-built for water treatment.

  • Page 8: Abbreviations Used

    Installer Manual Fleck 2910 - NXT - Generalities 1.5. Abbreviations used Assy............Assembly BLFC ............Brine Line Flow Controller BV ............Brine Valve CW............Cold Water DF............Down Flow DLFC ............Drain Line Flow Controller HW............Hot Water Inj ............Injector QC............

  • Page 9: Procedure For Technical Support

    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 10: Scan & Service Application

    Installer Manual Fleck 2910 - NXT - 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 11: Safety

    Installer Manual Fleck 2910 - NXT - Safety Safety 2.1. Safety pictograms definition Caution Warning Warns of a risk of minor injury or major Warns against serious personal injury material damage to the device or and damage to health. environment. Danger...

  • Page 12: Personnel

    Installer Manual Fleck 2910 - NXT - Safety 2.3.1. Personnel Only qualified and professional personnel, based on their training, experience and instruction as well as their knowledge of the regulations, safety rules and operations performed, are authorized to carry out necessary work. 2.3.2.

  • Page 13: Hygiene Measures

    Installer Manual Fleck 2910 - NXT - Safety 2.4.2. Hygiene measures Disinfection • The materials used for the construction of our products meet the standards for use with potable water; the manufacturing processes are also geared to preserving these criteria. However, the process of production, distribution, assembly and installation, may create conditions of bacterial proliferation, which may lead to odor problems and water contamination;...

  • Page 14: Description

    Installer Manual Fleck 2910 - NXT - Description Description 3.1. Technical specifications Design specifications/ratings Valve body ..........Brass Rubber components ....... EP or EPDM Weight (valve with controller) ....21 kg (max) Recommended operating pressure ..1.8 - 8.6 bar Maximum inlet pressure ......

  • Page 15: Performance Flow Rate Characteristics

    Installer Manual Fleck 2910 - NXT - Description Model without transformer Warning A switch or circuit-breaker must be included in the installation, it must be suitably located and easily reached, it must be marked as the disconnecting device for the equipment. Warning...

  • Page 16: Outline Drawing

    Installer Manual Fleck 2910 - NXT - Description FLOW RATE VS PRESSURE DROP Service Backwash Pressure drop [bar] 3.2. Outline drawing 16 / 114 Ref. MKT-IM-002 / B - 23.05.2018...

  • Page 17: Components Description And Location

    Installer Manual Fleck 2910 - NXT - Description 3.3. Components description and location Upper power head Injector Brine valve Lower power head Brine valve switch Upper power head motor Upper piston switch Upper piston NXT controller Upper piston cam Brine valve cam Lower piston cam Status LED Lower piston...

  • Page 18: System Regeneration Cycle

    Installer Manual Fleck 2910 - NXT - Description 3.4. System regeneration cycle Note This valve allows DF and UF regenerations. 3.4.1. DF 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 19 Installer Manual Fleck 2910 - NXT - Description Note For illustration purpose only. Always verify inlet and outlet marking on the valve. SERVICE NORMAL USE BACKWASH Outlet Inlet Outlet Inlet Drain Valve Valve BRINE DRAW & SLOW RINSE RAPID RINSE Outlet Inlet Outlet...

  • Page 20: Uf Regeneration Cycle (5-Cycles Operation)

    Installer Manual Fleck 2910 - NXT - Description 3.4.2. UF 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 21 Installer Manual Fleck 2910 - NXT - Description Note For illustration purpose only. Always verify inlet and outlet marking on the valve. PAUSE & DELAY BRINE DRAW & SLOW RINSE Outlet Inlet Outlet Inlet Drain Valve Valve From brine tank BACKWASH RAPID RINSE Outlet...

  • Page 22: Injector Block Position For Df And Uf Configurations

    Installer Manual Fleck 2910 - NXT - Description 3.5. Injector block position for DF and UF configurations 22 / 114 Ref. MKT-IM-002 / B - 23.05.2018...

  • Page 23: System Sizing

    Installer Manual Fleck 2910 - NXT - System sizing System sizing 4.1. Recommendations 4.1.1. Injector/DLFC/BLFC-Valve configuration Resin Diameter Injector DLFC BLFC Brine volume syst. [in] Color Color [gpm] DF [gpm] UF [gpm] 60 -85 Yellow Blue 1600/ 1650 85 - 115 Yellow 85 - 115 Yellow...
  • Page 24 Installer Manual Fleck 2910 - NXT - System sizing The softening and regeneration reactions are driven under certain conditions. To allow these reactions to take place, make sure that the velocity is convenient during the different phases for proper ion exchange. This velocity is given in the resin manufacturer specifications sheet. Depending on the inlet water hardness, the service velocity for standard softening must be between: Inlet water hardness Service velocity...

  • Page 25: Determining The Required Volume Of Resin

    Installer Manual Fleck 2910 - NXT - System sizing 4.2.2. Determining the required volume of resin When sizing a softener, make sure that the volume of resin in the tank (bed volume) will be sufficient so that even when the peak flow rate is reached, the velocity is still between the above values depending on the hardness.
  • Page 26 Installer Manual Fleck 2910 - NXT - System sizing Resin exchange capacity as a function of the salt dosage: Salt amount Corresponding resin exchange °f.m °dH.m [g/L capacity in [g/L ] as CaCO [per L [per L resin resin resin resin 29.9 2.99...

  • Page 27: Valve Configuration

    Installer Manual Fleck 2910 - NXT - System sizing To calculate the system volume capacity: / TH with: capacity capacity inlet : system volume capacity [m capacity : system mass capacity [g as CaCO capacity : system combined capacity [°f.m or °dH.m capacity : inlet water hardness [mg/L as CaCO...

  • Page 28: Cycle Time Calculation

    Installer Manual Fleck 2910 - NXT - System sizing Note This value does not correspond to the brine draw flow rate but to the total flow rate passing through the injector. Then refer to the injector diagrams at the inlet pressure in order to check if the injector will give a correct flow rate.
  • Page 29 Installer Manual Fleck 2910 - NXT - System sizing To calculate the brine draw duration: Knowing the injector draw flow rate at the working pressure: with: brine draw brine draw : brine draw duration [min] brine draw : brine volume to be drawn [L], see Refill calculation brine page 30 : injection draw flow rate [L/min]...

  • Page 30: Salt Amount Definition

    Installer Manual Fleck 2910 - NXT - System sizing To calculate the refill duration: The refill flow rate is controlled by the refill controller (BLFC). The relation between the BLFC size, the tank size and the resin volume is given in the valve specifications. To calculate the refill duration: with: refill...

  • Page 31: 1600 Injectors

    Installer Manual Fleck 2910 - NXT - System sizing 4.4.1. 1600 Injectors INJECTOR 2 Total Rinse Draw Inlet pressure [bar] INJECTOR 3 Total Rinse Draw Inlet pressure [bar] Ref. MKT-IM-002 / B - 23.05.2018 31 / 114...

  • Page 32: 1650 Injectors

    Installer Manual Fleck 2910 - NXT - System sizing 4.4.2. 1650 injectors INJECTOR 2 Total Rinse Draw Inlet pressure [bar] INJECTOR 3 Total Rinse Draw Inlet pressure [bar] 32 / 114 Ref. MKT-IM-002 / B - 23.05.2018...

  • Page 33: 1700 Injectors

    Installer Manual Fleck 2910 - NXT - System sizing 4.4.3. 1700 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] Ref. MKT-IM-002 / B - 23.05.2018 33 / 114...

  • Page 34: 1710 Injectors

    Installer Manual Fleck 2910 - NXT - System sizing 4.4.4. 1710 injectors INJECTOR 6C Total Rinse Draw Inlet pressure [bar] INJECTOR 7C Total Rinse Draw Inlet pressure [bar] 34 / 114 Ref. MKT-IM-002 / B - 23.05.2018...

  • Page 35: Installation

    Installer Manual Fleck 2910 - NXT - Installation Installation Mandatory 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.

  • Page 36: Installation Environment

    Installer Manual Fleck 2910 - NXT - Installation 5.3. Installation environment 5.3.1. General • Use only brine salts designed for water softening. Do not use ice melt, block, or rock salts; • 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 37: Mechanical

    Installer Manual Fleck 2910 - NXT - Installation 5.3.4. Mechanical • Do not use petroleum-based lubricants such as vaseline, oils, or hydrocarbon-based lubricants. Use only 100% silicone lubricants; • all plastic connections should be hand-tightened. PTFE (plumber’s tape) may be used on connections that do not use an O-ring seal.

  • Page 38: Valve Connection To Piping

    Installer Manual Fleck 2910 - NXT - Installation 5.5. 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 39 • in any case, any failure caused by improper installation and/or piping connections may void the warranty of Pentair products; • in the same way, using lubricant* on the valve thread is not allowed and will void the warranty for the valve and tank.

  • Page 40: Side-Mounted Valve Installation

    Installer Manual Fleck 2910 - NXT - Installation 5.5.2. Side-mounted valve installation Valid for location having a reduced height. Inlet shutoff Inlet Manual shutoff valve bypass Rubber expansion joint Outlet Fleck meter Unit 1 lead Outlet shutoff Drain line Support tripod Rubber expansion joint •...

  • Page 41: Block Diagram And Configuration Example

    Installer Manual Fleck 2910 - NXT - Installation 5.6. 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 Drain line Brine line Valve Brine tank...

  • Page 42: System Types

    Installer Manual Fleck 2910 - NXT - Installation 5.7. System types Note For all multiple tank systems, NBP version valves must be used. Metered immediate: The controller monitors the volume of water used. Once it calculates that capacity is exhausted, it starts regeneration immediately.

  • Page 43: Single Valve (System #4)

    Installer Manual Fleck 2910 - NXT - Installation 5.7.1. Single valve (System #4) As named, this system works with only one valve. The regen can be initiated upon the treated volume (delayed or immediate), time clock or an external remote regen signal. Inlet Outlet Valve...

  • Page 44: Multiple Valves With Consecutive Regenerations (System #6)

    Installer Manual Fleck 2910 - NXT - Installation 5.7.3. Multiple valves with consecutive regenerations (System #6) This system works with 2 to 4 valves and a meter. During normal operation, the controllers of each valve display the time of day and the volume of water remaining.

  • Page 45: Multiple Valves, Alternating (System #9)

    Installer Manual Fleck 2910 - NXT - Installation 5.7.5. Multiple valves, alternating (System #9) This system works with 2 to 4 valves. One, two or three tanks online supplying treated water, one tank in standby. Each unit in the system has its own flow meter.
  • Page 46 Installer Manual Fleck 2910 - NXT - Installation 2. The total flow rate to the primary tank increase past the first trip point programmed rate. The flow rate demand stays past the trip point for the preset delayed time. The next tank (least volume remaining) changes from standby to in service.
  • Page 47 Installer Manual Fleck 2910 - NXT - Installation 4. Total flow rate demand increased past a second trip point programmed rate. The second and third tank (least volume remaining) changes from standby to service. The total flow is split between three meters. Inlet Outlet Valve...
  • Page 48 Installer Manual Fleck 2910 - NXT - Installation 6. Tanks return to standby due to decreased total flow rate and trip points programmed. The tank with the most remaining volume will be the first to go into standby. Inlet Outlet Valve Tank Check valve...

  • Page 49: Valve Connection To Piping

    Installer Manual Fleck 2910 - NXT - Installation If two tanks are in service and both reach Volume remaining = 0, the other two tanks will shift from standby into service. The lead tank with Volume remaining = 0 will start regeneration. The second tank with Volume remaining = 0 will enter into standby.

  • Page 50: Electrical Connections

    Installer Manual Fleck 2910 - NXT - Installation 5.9. Electrical connections Black Violet HCAM: Upper piston cam Green LDM: Lower power head motor Brown Inhibition signal UDM: Upper power head motor Yellow Remote regen signal start Sw1: Upper piston switch White External signal during service Sw2: Brine valve switch...

  • Page 51: Connections For Multiple Valves

    Installer Manual Fleck 2910 - NXT - Installation 5.9.1. Connections for multiple valves 2 controllers NXT Duplex system #5, #6, #7, #9 & #14 3 controllers NXT Triplex system #5, #6, #9 & #14 4 controllers NXT Quadriplex system #5, #6, #9 & #14 Ref.

  • Page 52: Bypassing

    Installer Manual Fleck 2910 - NXT - 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 53: Overflow Line Connection

    Installer Manual Fleck 2910 - NXT - Installation The drain line must be build with 1" PVC rigid tube with an air gap. The drain line may be elevated up to 1.8 m providing the run does not exceed 4.6 m and water pressure at the softener is not less than 2.76 bar.

  • Page 54: Brine Line Connection

    Installer Manual Fleck 2910 - NXT - Installation Overflow fitting Drain tubing Secure hose in place Air gap Drain Caution Floor drain is always recommended to avoid flooding in case of overflow. 5.13. Brine line connection Mandatory The brine line must be build with 1" PVC rigid tube. Caution...

  • Page 55: Programming

    Installer Manual Fleck 2910 - NXT - Programming Programming 6.1. Display 6.1.1. During service 7#1 SRV* 08:26HR VOLUME 20000L 1. System type → #4: single valve; → #5: lockout system, 2 to 4 valves; → #6: parallel system, sequential regenerations, 2 to 4 valves; →...

  • Page 56: Setting The Time Of The Day

    Installer Manual Fleck 2910 - NXT - Programming Press to pass to the next step. to move the cursor to the next digit. to adjust the values. Press D at any time to exit programming mode without saving. 6.3. Setting the time of the day Set the time in the system.

  • Page 57: Inlet Water Hardness

    Installer Manual Fleck 2910 - NXT - Programming Select the language to be displayed with Press to validate the selection and advance to the next parameter. 6.4.2. Inlet water hardness Set the input water hardness in the unit defined on chapter 6.5.11. Display format, page 65. FEED WATER...

  • Page 58: Master Programming Mode

    Installer Manual Fleck 2910 - NXT - Programming 6.5. Master programming mode Note As soon as programming mode is entered, all parameters can be displayed or set to suit the needs. Depending on the current programming, some functions will not be displayed or will not be changeable.
  • Page 59 Installer Manual Fleck 2910 - NXT - Programming Parameter Options Definition Note 2 valves in the system This screen will not be displayed for SYSTEM SIZE 3 valves in the system system type 4. 4 valves in the system TIME CLK Time clock delayed System 4 only.
  • Page 60 Installer Manual Fleck 2910 - NXT - Programming Parameter Options Definition Note This screen will only display on the lead unit for system types 6 & 7. For all FEED WATER other system types, it will display for Milligram CaCO 1 to 1’999 HARDNESS all units.
  • Page 61 Installer Manual Fleck 2910 - NXT - Programming Parameter Options Definition Note OFF to This screen will only display when CYCLE 5 Hour 04:00:00 cycle 4 is not OFF. Enabled AUXILIARY Not compatible with CPO AUX RELAY activation. Disabled (Default) AUX RELAY 00:00:00 to Only displayed if auxiliary relay is...

  • Page 62: Entering Master Programming Mode

    Installer Manual Fleck 2910 - NXT - Programming 6.5.2. Entering master programming mode 7#1 SRV* 08:26HR Press simultaneously for 5 seconds to enter the master programming mode. VOLUME 20000L 6.5.3. Language setting Select the displayed language. Options: • English; • French;...

  • Page 63: Valve Address In The System

    Installer Manual Fleck 2910 - NXT - Programming 6.5.5. Valve address in the system Set the valve position in the system. Note Only visible in systems 5, 6, 7, 9 and 14. Note The number #1 is the lead valve (master) and contains the programmed parameters used by the other controllers in the system in order to control the regeneration and service or standby positions.

  • Page 64: Regeneration Type

    Installer Manual Fleck 2910 - NXT - Programming 6.5.7. Regeneration type Select the regeneration type. Options: • time clock delayed: regeneration will take place, at the programmed regeneration start up time, after predetermined delay set up in day elapsed (available only for system type 4); •...

  • Page 65: Remote Started Regeneration

    Installer Manual Fleck 2910 - NXT - Programming Options: • down flow; • up flow (not for 2850 valve type); • up flow fill first (only for 2750 and 2900/2910 types). REGENERANT FLOW: Set regeneration flow with → Default setting: down flow DOWN FLOW Press to validate the selection and advance to the next...

  • Page 66: System Capacity

    Installer Manual Fleck 2910 - NXT - Programming 6.5.12. System capacity Set the capacity of the tank where the valve is installed. Note On the basis of system capacity, safety coefficient and inlet water hardness, the controller calculates the volume of water that the system can treat between 2 regenerations. Example: 3000 g of CaCO Set the unit capacity with capacity.
  • Page 67 Installer Manual Fleck 2910 - NXT - Programming 6.5.15.1 Trip point 1 Note Only visible if controller programmed as valve position #1. TRIP POINT 1: Set the trip point 1 flow rate with → Can be adjusted from 0 to 3997 Lpm. 0000 Lpm AA Press to validate the selection and advance to the next...

  • Page 68: Regeneration Days Override

    Installer Manual Fleck 2910 - NXT - Programming TRIP DELAY 3: AJ Set the trip point 3 delay with → Can be adjusted from 30 to 99 seconds. 30 SECONDS AK Press to validate the selection and advance to the next parameter.

  • Page 69: Programming Regeneration Cycle Times

    Installer Manual Fleck 2910 - NXT - Programming 6.5.18. Programming regeneration cycle times Set the cycle times of the regeneration. Note Five cycles can be set. The system displays the programming cycles. The display allows setting of a specific time for each cycle. If a cycle is set to NO, the next cycles is not activated. Note...
  • Page 70 Installer Manual Fleck 2910 - NXT - Programming Disabled. AS Activate the relay with AUXILIARY RELAY: → Default setting: disabled. DISABLED AT Press to validate the selection and advance to the next parameter. Relay enabled beginning of regeneration. AU Set the relay activation time with AUX RELAY OUTPUT...

  • Page 71: Flow Meter Selection

    Installer Manual Fleck 2910 - NXT - Programming 6.5.20. Flow meter selection Select the size of the flow meter. Options: • 1" paddle; • 1" turbine; • 1½" paddle; • 1½" turbine: • 2" paddle (standard for 2910 valve); • 3"...

  • Page 72: Parameters Saving

    Installer Manual Fleck 2910 - NXT - Programming 6.5.21. Parameters saving Note When the last parameter is set and the button pressed, the controller updates the database based on the new programming. Wait until programming is finished, this may take a few seconds.

  • Page 73: Totalizer

    Installer Manual Fleck 2910 - NXT - Programming 6.6.4. Totalizer Note The controller registers the total volume of treated water that passes through the meter since start-up (or last hard reset).  TOTALIZER To reset, press and hold the buttons for 5 seconds until the display shows zero.

  • Page 74: Valve Position

    Installer Manual Fleck 2910 - NXT - Programming system (complete system). VOL REMAIN SYST 0100000L 6.6.8. Valve position Note Shows the position of the valve in a multiple valve system, also called the valve address. VALVE ADDRESS:  6.6.9. Software version Note...

  • Page 75: Resetting The Controller

    Installer Manual Fleck 2910 - NXT - Programming 6.7. Resetting the controller Mandatory Once you have completed this operation, it is necessary to check all programming steps. Note There are two methods to reset. 6.7.1. Partial reset Caution All the parameters are set to default values, except flow meter totalizer volume in diagnostic mode.

  • Page 76: Commissioning

    Installer Manual Fleck 2910 - NXT - Commissioning Commissioning Note This chapter is available for standard regeneration types. Contact your supplier if the actual regeneration is not standard and if you need assistance. 7.1. Water filling, draining and waterproofness inspection 7.1.1.

  • Page 77: Activating A Multiple Valves System

    Installer Manual Fleck 2910 - NXT - Commissioning 7.1.2. Activating a multiple valves system (Systems #5, #6, #7, #9 and #14) Follow the previous procedure for each tank of the system. Note In order to gain time, program first all tanks as single system #4. Proceed to start up as described above for each tank, then program the correct system type and valve address and eventually set/trip points in case of system #14.

  • Page 78: Sodium Or Calcium Hypochlorite

    Installer Manual Fleck 2910 - NXT - Commissioning 7.2.2. Sodium or calcium hypochlorite These materials are satisfactory for use with polystyrene resins, synthetic gel zeolite, greensand and bentonites. 5.25% Sodium hypochlorite If stronger solutions are used, such as those sold for commercial laundries, adjust the dosage accordingly.

  • Page 79: Operation

    Installer Manual Fleck 2910 - NXT - Operation Operation 8.1. Display 8.1.1. During service • Single valve in service in timeclock mode: 4#- SRV 15:25HR REGEN IN 03 DAYS • single valve in service in volume immediate or delayed mode: 4#- SRV* 14:24HR...

  • Page 80: Recommendations

    Installer Manual Fleck 2910 - NXT - Operation 8.2. 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 81: Maintenance

    Cleaning and maintenance shall take place at regular intervals in order to guarantee the proper functioning of the complete system, and be documented in the Maintenance chapter in the User Guide document. Mandatory The maintenance must be done by a professional certified by Pentair, otherwise the warranty will void. 9.1. Recommendations 9.1.1.

  • Page 82: Upper Power Head Motor Replacement

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.2. Upper power head motor replacement Operation Using a flat screwdriver, unscrew (1) and open the cover (2). Using a flat screwdriver, unscrew (3) and open the controller (4). Using a pliers, remove the connecting pin (7). Using a flat screwdriver, unscrew (6) and remove the motor (5).

  • Page 83: Upper Motor Cams And Micro-Switches Replacement

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.3. Upper motor cams and micro-switches replacement Operation Using a Phillips screwdriver, unscrew (1) and extract the micro-switches (2). Using pliers, remove the pins (4). Replace the cams ensuring they are in the same position (3). Reverse above procedure steps to rebuild.

  • Page 84: Lower Power Head Motor Replacement

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.4. Lower power head motor replacement Operation Using a flat screwdriver, unscrew (2) and open the cover (1). Using a pliers, remove the connecting pin (4). Using a 6 mm Allen key, unscrew (3) and remove the motor (5). Reverse above procedure steps to rebuild.

  • Page 85: Lower Motor Cams And Micro-Switches Replacement

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.5. Lower motor cams and micro-switches replacement Operation Using a Phillips screwdriver, unscrew (3), extract the micro-switches (2) and protections (1). Using a 6 mm wrench, unscrew (10), remove the washer (9) and the pointer (8). Using a pliers, remove the circlip (7) and the arm (6).

  • Page 86: Upper Piston And/Or Seal And Spacer Kit Replacement

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.6. Upper piston and/or seal and spacer kit replacement Operation Using a flat screwdriver, unscrew (1) and open the cover (2). Using pliers, remove the connecting pin (3). Using a flat screwdriver, unscrew (4) and remove the motor assembly (6). Using a 22 mm wrench, unscrew the brine valve nut (7) and remove the upper power head (5).
  • Page 87 Installer Manual Fleck 2910 - NXT - Maintenance Ref. MKT-IM-002 / B - 23.05.2018 87 / 114...

  • Page 88: Lower Piston And/Or Seal And Spacer Kit Replacement

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.7. Lower piston and/or seal and spacer kit replacement Operation Using a flat screwdriver, unscrew (1) and open the cover (2). Using a pliers, remove the connecting pin (5). Using a 6 mm Allen key, unscrew (3) and remove the lower power head (4). Using a pliers, remove the piston (8).
  • Page 89 Installer Manual Fleck 2910 - NXT - Maintenance Ref. MKT-IM-002 / B - 23.05.2018 89 / 114...

  • Page 90: Injector Cleaning

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.8. Injector cleaning Operation Using a 8 mm and a 20 mm wrench, unscrew the screws (1) and the brine valve nut (2). Using flat screwdrivers, remove the injectors (5) and (6) from injector body (8). Clean the injectors (5) and (6) and the filter (7) using compressed air, a soft brush or possibly a pin.

  • Page 91: Blfc Cleaning

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.9. BLFC cleaning Operation Using 16 mm and 21 mm wrenches, release the nuts (2) and remove the tube (1). Using a 22 mm wrench, remove the flow washer holder (3) from the brine valve. Using pliers, remove the grid (4) from the flow washer holder (3).

  • Page 92: Dlfc Cleaning

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.10. DLFC cleaning Operation Using a 39 mm wrench, unscrew and remove the flow washer housing (1). Remove the flow washer (2) from the flow washer housing (1). Clean or change the flow washer (2). Reverse above procedure steps to rebuild.

  • Page 93: Assembling Valve On Tank

    Installer Manual Fleck 2910 - NXT - Maintenance 9.2.11. Assembling valve on tank Operation Lubricate the seals with approved silicone grease. Spin the valve (1) onto the tank (2), ensuring the threads are not cross-threaded. Rotate the valve (1) clockwise and freely, without using force until it comes to a stop. Note...

  • Page 94: Troubleshooting

    Installer Manual Fleck 2910 - NXT - Troubleshooting Troubleshooting 10.1. Error detection Note It can take up to 30 seconds before an error can be detected and displayed. Mandatory All the errors must be displayed on each controller before they can be corrected. •...
  • Page 95 Installer Manual Fleck 2910 - NXT - Troubleshooting Problem Cause Solution Improper salt setting. Check salt usage and salt setting. Excessive salt See problem "Excessive water in consumption Excessive water in brine tank. brine tank" below. Determine if micro-switch or Controller cycles Maladjusted, broken or shorted controller is faulty and replace it,...

  • Page 96: Programming Error

    Installer Manual Fleck 2910 - NXT - Troubleshooting Problem Cause Solution Check controller program and Controller is not programming positioning of controls. Replace correctly. power head assembly if not positioning properly. Remove power head assembly and Drain flows continuously inspect bore. Remove foreign Foreign material in valve body.

  • Page 97: Examples Of Error Displayed

    Installer Manual Fleck 2910 - NXT - Troubleshooting 10.3. Examples of error displayed • The unit 2 has been reset; DETECTED ERROR = → Reprogram the unit. RESET UNIT DETECTED  • there is no message from unit 3; ERROR →...

  • Page 98: Spare Parts

    Installer Manual Fleck 2910 - NXT - Spare parts Spare parts 11.1. Valve parts list Assembly Min. order Item Part number Description quantity quantity Power head 2510/2750/2850/2910 VCPHINDUS1 See 11.2. Lower power head parts list, page 100 28416 Piston assy 2910 upper DF 28417 Piston assy 2910 upper UF 28415...
  • Page 99 Installer Manual Fleck 2910 - NXT - Spare parts Assembly Min. order Item Part number Description quantity quantity 11893SP Injector flat cover 24874SP Screw THM 5x8 inj Injector See 11.8. Safety brine valves list, page 107 BU28515-01 Valve body assy 2910 DF BU28515-02 Valve body assy 2910 DF/NBP BU28515-03...

  • Page 100: Lower Power Head Parts List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.2. Lower power head parts list Assembly Min. order Item Part number Description quantity quantity 18709-50 Back plate 2900/2910 Lower 18357-01 Motor assy 2910 adapt 24V 21361SP Screw TCHCM 8x16 26218-01 Cover assy 2900/2910 lower grey 40943 Harness 3200 NXT lower...

  • Page 101: Upper Power Head Parts List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.3. Upper power head parts list Assembly Min. order Item Part number Description quantity quantity 26260 Transformer 60VA 11545 Power cord European black BU28713 Controller assy NXT BR61702-03 Circuit board NXT 28008 Harness pulse controller 3230 (not shown) 40400...

  • Page 102: Brine Valves List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.4. Brine valves list Brine Part Assembly Min. order Item Description System number quantity quantity 1600/ 11749 Brine valve 1600/1650 stem guide 1650 24994-0.25 Brine valve 1600 assy DF HW 0.25 gpm 1600 24994-0.5 Brine valve 1600 assy DF HW 0.50 gpm...
  • Page 103 Installer Manual Fleck 2910 - NXT - Spare parts Brine Part Assembly Min. order Item Description System number quantity quantity 26991-1.2 Brine valve 1700 assy HW DF 1.20 gpm 26991-2.0 Brine valve 1700 assy HW DF 2.00 gpm 1700 26991-4.0 Brine valve 1700 assy HW DF 4.00 gpm 26991-7.0 Brine valve 1700 assy HW DF 7.00 gpm...

  • Page 104: Injectors List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.5. Injectors list 1600/1650 1700/1710 Brine Part Assembly Min. order Item Description System number quantity quantity 1600 24555-3 Inj 1600 assy HW DF # 3 24199-3 Inj 1650 assy DF # 3 1650 26840-2 Inj 1650 assy UF # 2...

  • Page 105: 1600/1650 Injector Parts List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.6. 1600/1650 injector parts list Assembly Min. order Item Part number Description quantity quantity 10692SP Screw 11893SP Inj cover 10229SP Inj body gasket 10227SP Inj screen 10913-2SP Inj nozzle #2 10913-3SP Inj nozzle #3 10914-2SP Inj throat #2...

  • Page 106: 1700/1710 Injector Parts List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.7. 1700/1710 injector parts list Assembly Min. order Item Part number Description quantity quantity 23477SP Screw 11893SP Inj cover 10229SP Inj body gasket 17777-03 Inj body 3C-5C 15414 Nut and sleeve assy 15413 Male elbow 23304SP...

  • Page 107: Safety Brine Valves List

    Installer Manual Fleck 2910 - NXT - Spare parts Assembly Min. order Item Part number Description quantity quantity 14801-03CSP Inj nozzle 3C 14801-04CSP Inj nozzle 4C 14801-05CSP Inj nozzle 5C 14801-06CSP Inj nozzle 6C 14801-07CSP Inj nozzle 7C 10228SP Inj cover 13771SP O-ring 17777-03...

  • Page 108: Kit Meter & Meter Cables List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.9. Kit meter & Meter cables list Assembly Min. order Item Part number Description quantity quantity 28283 Kit meter NT - NXT 1" brass 28284 Kit meter NT - NXT 1½" brass 28285 Kit meter NT - NXT 2"...

  • Page 109: Distributors List

    Installer Manual Fleck 2910 - NXT - Spare parts 11.11. Distributors list Assembly Min. order Item Part number Description quantity quantity 18404 2" assy 1m82 18396 2" distributor BU28649 2" tube 1m66 21148HW 2" tube HW 1m66 26050 2" distributor HW BU26052 2"...
  • Page 110 Installer Manual Fleck 2910 - NXT - Spare parts Other components list Mixing assembly Rotating Side Mount Adapter Rotating Side Mount Adapter Kit 51 Kit 57 Brine Part Assembly Min. order Item Description System number quantity quantity BU61564-10 Mixing assy 1" industrial 1600/ 1710 61415-20...

  • Page 111: Ce Compliance Parts List

    Installer Manual Fleck 2910 - NXT - Spare parts Brine Part Assembly Min. order Item Description System number quantity quantity 16124SP Sleeve ½" 15413 Male elbow ½" 1700/ 23804 Fitting " 1710 16123SP Nut ½" 15415SP Insert tube ½" 11.12. CE compliance parts list Assembly Min.

  • Page 112: 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 113 Installer Manual Fleck 2910 - NXT - Disposal PAGE INTENTIONALLY LEFT BLANK Ref. MKT-IM-002 / B - 23.05.2018 113 / 114...
  • Page 114 www.pentairaquaeurope.com...

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