A050 Galaxy Manual

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    OPERATIONS, MAINTENANCE ANDTROUBLESHOOTING GUIDE

    N E T A F I M

    Galaxy Disc-Kleen Filter Batteries

    NETAFIM USA

    5470 E. HOME AVE.

    FRESNO, CA 93727

    CS 888 638 2346

    F 800 695 4753

    www.netafimusa.com

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    Features and Applications....................................................................................3

    Specifcations .....................................................................................................3

    Filter Dimensions ................................................................................................4

    Water Quality & Maximum Flow Rates .................................................................5

    Filter Operation ..................................................................................................5

    Installation .........................................................................................................8

    Filter Start-up ...................................................................................................10

    System Maintenance .........................................................................................10 Troubleshooting ................................................................................................13

    Replacement Parts ............................................................................................15

    2

    Table of Contents

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    Features and Applications

    Product Features

    Compact, simple design saves valuable space with small footprint.

    Quick installation - factory assembled and tested.

    Automatic, self-cleaning, self-ushing system triggered by pressure differential and/orpre-set time.

    Proven depth ltration - lters through the entire depth of the disc ring, not just thesurface.

    Non-corrosive materials prevent rusting and corrosion from chemicals and weather.

    Less backush water and time required for otimized irrigation scheduling resulting inuniform watering.

    Innovative design captures and stores large amounts of solids reducing the need forbackushing.

    Applications - Agriculture For surface water containing algae and other organic materials such as reservoirs,

    canals, rivers and reclaimed water applications

    For systems requiring high volumes of water

    Specications Minimum Operating Pressure for Filtration: 20 psi

    Minimum Pressure Required for Backushing: 40 psi downstream of thelters during backush

    Maximum Operating Pressure: 140 psi

    Backush Flow Rate per unit @ 40 psi: 175 GPM

    Maximum Operating Temperature: 158 F

    Minimum Allowable pH: 5

    Inlet/Outlet Connections: Flanged

    Includes installed drain manifold

    Sustaining valve is recommended for all 2-unit Galaxy Filters and all othersizes if the downstream pressure is less than 40 psi during backush

    Galaxy Disc-Kleen FilterFlow Rate vs. Pressure

    10

    5

    1.4

    1

    .5

    .1444 100 200 440 1000 2000 4000

    Flow Rate (GPM)

    Pressure

    (psi)

    3

    4

    5

    6

    7

    9

    10

    8

    Disc Color

    Disc Color Blue Yellow Red Black Brow

    Mesh 40 80 120 140 200

    Micron 400 200 130 115 70

    Standard Sizes Available

    Number of Units 3 4 5 6

    Maximum Flow 1200 1600 2000 2400

    Number of Units 7 8 9 10

    Maximum Flow 2800 3200 3600 4000

    Specications

    Solenoid Options

    Solenoid Type

    24VAC

    12VDC

    12VDCL

    Manifold Connections

    Number of Filters 3 4 5 6

    Connection 8 Flange 10 Flange 10 Flange 12 Flange

    Number of Filters 7 8 9 10

    Connection 12 Flange 12 Flange 14 Flange 14 Flange

    Applications - Landscape & Tur

    Residential and multi-family developments Commercial landscapes, institutional parks, sports eld

    Golf courses

    Large landscape installations

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    Filter Dimensions

    Dimensions

    No. of Units 3 4 5 6 7 8 9 10

    Length 72 27/32 88 3/16 107 7/8 127 9/16 80 5/16 80 5/16 107 7/8 107 7/8

    Width 34 34 34 34 55 3/4 55 3/4 55 3/4 55 3/4

    Height 56 56 56 56 56 56 56 56

    Weight* (lbs.) 640 820 1,070 1,345 1,590 2,010 2,380 2,590

    *Approximate shipping weight.

    Backflush controller not included in dimensions above.

    Side View3 Unit Front Length

    Height

    Length Width

    Materials

    Manifold: High densitypolypropylene

    Filter Body and Cover: Highdensity polypropylene

    Discs: Polypropylene

    Backush Valve: Plastic withreinforced polyamide

    O-Ring and Seals: EPDM

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    Water Quality & Maximum Flow Rates

    The discs are stacked on the spine. The discs are color-coded by micronsize, and are assembled according to your water ltration requirements.The spine assembly has a spring compression unit and an internal pistonwhich are used to alternately compress and release the discs during lter-ing and backushing cycles.

    Filtration Mode:

    During the ltration process the ltration discs are tightly compressedtogether by the spring and the differential pressure, thus forcing the waterto ow through the grooves and traps of the discs.

    Backfush Mode:During backush, the discs are uncomressed by the releasing the inlethydraulic pressure. Multi-jet nozzles provide peripheral spray on the loos-ened discs, causing them to spin, and release the retained solids, whichare ushed out to the drain.

    Backflush

    Water Inlet

    To Drain

    Filtration Mode Backflush Mode

    Outlet

    Inlet

    WaterQuality

    3Units

    4Units

    120 Mesh Water Source Maximum Flow Rate (GPM)

    5Units

    6Units

    7Units

    8Units

    Good 1,200 1,600 2,000 2,400 2,800 3,200 3,600 4,000

    Average 1,100 1,460 1,825 2,200 2,560 2,950 3,300 3,650

    Poor 884 1,179 1,474 1,769 2,064 2,358 2,655 2,950

    Very Poor 541 722 902 1,082 1,263 1,443 1,623 1,804

    9Units

    10Units

    WaterQuality

    3Units

    4Units

    140 Mesh Water Source Maximum Flow Rate (GPM)

    5Units

    6Units

    7Units

    8Units

    Good 1,200 1,600 2,000 2,400 2,800 3,200 3,600 4,000

    Average 900 1,300 1,650 1,980 2,310 2,640 2,970 3,300

    Poor 660 880 1,100 1,320 1,540 1,760 1,980 2,200

    Very Poor 436 581 726 871 1,016 1,162 1,310 1,454

    9Units

    10Units

    WaterQuality

    3Units

    4Units

    80 MeshWater Source Maximum Flow Rate (GPM)

    5Units

    6Units

    7Units

    8Units

    Good 1,200 1,600 2,000 2,400 2,800 3,200 3,600 4,000

    Average 1,125 1,500 1,875 2,250 2,625 3,000 3,375 3,750

    Poor 940 1,250 1,550 1,850 2,150 2,450 2,750 3,100

    Very Poor 600 800 1,000 1,200 1,400 1,600 1,800 2,000

    9Units

    10Units

    Water Quality Good Water Quality: Municipal water supply or

    well water from a clean aquifer with no sand, ironor manganese.

    Average Water Quality: Wells with small amountsof sand (< 2 ppm) or clean surface water whichincludes lakes, ponds, reservoirs and canals.

    Poor Water Quality: Well water from a poorquality aquifer (> 2 ppm) or surface water in hotclimates with increased biological growth and nochemical treatment which includes lakes, ponds,reservoirs and canals.

    Very Poor Water Quality: Well water withgreater than 10 ppm of sand including rivers,muddy canals, lakes and ponds with severe run offdeposits and raw municipal wastewater.

    Greater than 3 ppm Sand or Silt: May require apre-lter such as a hydrocyclone.

    Filter Operation

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    Filter No. 1

    In Backflush Mode

    Filter No. 2 & 3

    In Filtration Mode

    Booster

    Valve No. 1

    Inlet Valve

    No. 3

    3

    2

    1

    IN

    DRAIN

    3

    2

    1

    Backfush Valve:

    The Backush valve has two built-in chambers, the N.O. lter port and the N.C. drainport. Each port has its own valve seat, but they share a common shaft and diaphragm.

    The valve chambers are mutually integrated units. When one port is open, the other isclosed, permitting the backush valve to perform two modes of operation:

    Filtration Mode: The valve permits ow from the inlet manifold through the lter, intothe pipeline.

    Flushing Mode: The valve closes the inlet manifold and opens the drain port, causingreverse ow through the lter, ejecting impurities via the drain port.

    The backush valve is either controlled by water pressure or a pneumatic source.Operation is initiated by an electric solenoid with a manual override feature. A manualoverride knob is installed on the base of all AC and DC continuous solenoids. Duringnormal operation, the dot on the round brass knob should be pointing towards thebrass solenoid base (down). Turning this knob 90 degrees to the left or right will activatethe solenoid and put the valve/lter into a backush mode. Backushing should bemaintained for 20 seconds, then the knob can be returned to the auto position for normalirrigation. For DC latching solenoids, the manual override green lever is in a verticalposition. Turning to the left 90 degrees will put the valve/lter into a bachush mode.

    Filtration Process:

    During the ltration process, the water ows through the inlet manifold, through the 4lters and the 4x 3 inlet valves. The lter water gathers in the outlet manifold and owsinto the system.

    Filter Operation

    6

    Flushing ModeFiltration Mode

    Auto

    COIL

    OffOn

    Auto

    BASE

    Manual

    AC and DC ContinuousSolenoid Manual Override

    DC Latching SolenoidManual Override

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    Filter Operation

    Backfush Process:

    The backush process begins with an electrical command from the control unit to the rst solenoid activatedby the pressure difference between the inlet and outlet or by time.

    The solenoid then sends a pressure command to the booster valve (assembled on 4x 3 inlet valve No. 1).

    The booster valve opens causing the No. 1 valve to close the 4 inlet to the lter and open the 3 drain port.Filter No. 1 is now in a backush position.

    The 5 spines in lter No. 1 operate simultaneously, releasing the compressed discs. Peripheral jets of water arepumped against the discs, causing them to spin fast and free, ushing trapped solids out to the drain.

    The ltered backush water is supplied from the other lters through the outlet manifold.

    The contaminated water from the backushed lter drains through the drainage manifold.

    Backush time per lter is 20 seconds. When the time elapses, the control unit stops the backush signal tothe solenoid.

    The solenoid releases the water pressure signal allowing the inlet valve and the discs of the 5 spines to return toltration position.

    Once lter No. 1 is in the ltration position again, the control unit sends a signal to begin the backushprocess in lter No. 2.

    After all the lters have been backushed, the system returns to ltration mode until the next backush cycle.

    Filter No. 1

    In Backflush Mode

    Filter No. 2 & 3

    In Filtration Mode

    Booster

    Valve No. 1

    Inlet Valve

    No. 3

    3

    2

    1

    IN

    DRAIN

    3

    2

    1

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    Please Note: It is highly recommended to try to keep the length of the drainpipe to a minimum in order to achieve and ensure highly effective backushing.

    2000

    1500

    1000

    500

    0

    0 20 40 60 80

    DRAIN PIPE LENGTH

    Galaxy Filter Batteries

    Maximu

    mDrainPipeLength(feet)

    Downstream Pressure (psi)

    Drain Manifold

    Installation Guidelines

    Minimum BatteryPressure Downstream

    Backflush Flow Rate

    Drain Pipe Diameter

    Topographic Elevation

    40 psi

    184 GPM

    4

    0

    Maximum Drain PipeLength at Pressure (psi)

    Length in Feet

    40

    33

    48

    470

    58

    1000

    68

    1540

    Installation:

    Make sure that the inlet and outlet orientationis correct (shown by arrows on lter).

    Prior to start-up, check for any damage to theunit (system operates under pressure).

    Connect backush drainage line.

    Cover clamps need to be properly closed.

    Verify the solenoids are correct as ordered beforeconnecting the wires to the backush controller.

    Drain Maniold Installation:

    Drain

    In

    Out

    Air ReleaseValve

    Drain

    CommandFilter

    VentOut

    InPressure Guage

    CommandFilter

    CoverClamps

    Air ReleaseValve

    Installation

    8

    The maximum drain pipe length isthe maximum length, i.e. head losspermitted in order to guarantee theminimum 40 psi for backush.

    Backfush Controller Electrical Wire Hook-up:

    Use 1/2 conduit and 16 gauge wire or larger from the controller tothe solenoids.

    C is common to all solenoids 24 VAC or 12 VDC. For the 12 VDCL(latching), use positive or red lead.

    M is master valve used with Pressure Sustaining Normally Open orElectric valves to control the downstream ow.

    Terminals 1-8 for each solenoid for the hot lead.

    Seal the wire access holes to the controller.

    AC POWER WIRING

    12 VDC POWER WIRING

    24 VAC

    Yellow

    Orange

    Yellow

    115 VAC

    FromSolarPanel

    OR

    230 VAC

    115 or 23050/60 HzTransformer

    C 8 7 6 5 4 3 2 1 A M

    C 8 7 6 5 4 3 2 1 A M

    Solenoid on TanksRelay

    Solenoid Common

    MasterValve

    Solenoid on TanksRelay

    Common

    Red lead from latching solenoid on DCL models.

    MasterValve

    +

    12 VDCBattery

    12 VDC

    Do not use transformer and wire + 12 V DC to first two terminals. Do not use third terminal.

    OPEN

    CONTACT

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    Installation

    Backfush Controller Installation:

    Refer to the controllers handbook for installation instructions.

    Make sure that the voltage of both the solenoid unit and controller are correct.

    Set the manual operation button to automatic.

    Check that the PD hydraulic switch HIGH and LOW pressure lines are correctlyconnected to the appropriate ports.

    Set the starting backush point on the PD switch to 6 to 8 psi above the cleanpressure difference.

    Set the controller to a ush time of 20 seconds and a dwell time of 10 seconds.These settings may require adjustment to conform to local water conditions.Typically, a 4 to 8 hour interval between backushes is recommended.

    Backflushing Controller

    Flushing Time Dwell Flushing Cycle

    Time orPTime orP 1 2 3 4 5 1 2

    P

    Drain

    In

    Out LP

    HP

    PD54321

    Command

    Water Filter

    P Switch

    BoosterValve

    Solenoid

    BackflushValve

    GalaxyFilter

    24 VAC

    In

    Out

    In

    Out

    LP

    HP

    Murphy

    To Valve

    Vent

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    General Requirements and Maintenance:

    Conrm there is 40 psi of pressure upstream of the lter during backush.

    Check that the Pressure Differential (PD) Gauge returns to 0-2 psi after a backush.

    All vent tubes need to vent freely to atmosphere without any back pressure.

    To minimize damage to the backush controller, always keep the door closed and turnoff the power when not using the controller for long periods of time.

    Seasonal Maintenance:

    For the 2-Station DC model backush controller only, replace two 9 Volt batteriesevery two-three years, or as needed. Batteries are located inside the backush controller.Use three year life lithium or one year life alkaline batteries.

    At the end of the irrigation season, just before shutdown, initiate a backush with therequired pressure and turn off the water. This will ensure the discs remain clean during

    the offseason.

    Manually clean the discs if needed see detailed instructions on Page 11.

    In order to prevent the lter from becoming damaged under freezing conditions,drain all the water from the lter and leave the drain valve open.

    Start-up Operation:

    Flush out the main line upstream of the lter by opening the

    blind ange connection of the inlet manifold. After initialushing, reassemble the blind ange.

    Turn the system on slowly to build up the pressure.

    Start the backush cycle making sure that all systemcomponents function correctly.

    Check that the PD gauge reads zero after a ush cycle.

    Weekly Check

    Inlet/Outlet PressureBackflush ControllerLeakageClean Command Filter

    SolenoidsDownstream Pressure and DrainBackflush Valves

    Monthly Check - Operate backflush inthe system according to p meter andcheck:

    Filter Start-Up

    I Filter Loads Up During Start-Up:

    Close the downstream (ow control) valve.

    Flush cycle until clean.

    Slowly reopen the downstream valve.

    If the pressure difference remains high, check and see if the owrate is too high. An excessive ow rate through the lter usesexcessive pressure loss.

    10

    System Maintenance

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    System Maintenance

    Figure 1 Figure 2 Figure 3 Figure 4

    Figure 5 Figure 6 Figure 7 Figure 8

    Figure 9 Figure 10 Figure 11

    Disc Cleaning Instructions:

    NOTE: Make sure the system is not under pressure.

    Release the clamp and remove the cover (Figure 1).

    Unscrew the buttery-nut on the ltration element (Figure 2).

    Remove the tightening cylinder (Figure 3).

    Remove the discs. For convenience, we recommend using a plasticbag (Figure 4, 5).

    Tie each disc set on a string and place them in a cleaning solution.Refer to instructions on page 12 for recommended cleaningsolutions based on water deposits.

    Thoroughly wash the discs with fresh water and then reassemble tdiscs on the spine (Figure 6).

    Check that the correct quantity of discs is assembled on the spine.When the discs are pressed with two hands, the top disc should becentered between the two lines molded in the plastic at the top ofthe nozzles (Figure 7).

    Replace the tightening cylinder and tighten the buttery nut untilstops - do not overtighten (Figure 8, 9).

    Reassemble the lter cover and tighten the clamp (Figure 10, 11).

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    System Maintenance

    Disc Cleaning Instructions or Well Water withManganese, Iron or Carbonate Deposits:

    Step 1 Make a 10% Hydrochloric Acid solution. Pour 1.8 gallons of waterinto a container and add .80 gallons Hydrochloric Acid (30-35%)to the water.

    Soak the discs in this solution making sure the discs are loose andhave good contact on both sides with the acid solution. Do not puttoo many discs in at one time.

    Stir the discs in the solution a few times.

    Total soaking time is 1 to 3 hours. If the solution is no longercleaning the discs, replace it with a new mixture.

    Remove the discs and rinse well with water there should only be a

    pale sedimentation on the discs.

    Step 2 After the discs have been rinsed with water, they must be soaked in

    a 10% Peroxide solution to remove the organic residue.

    Make a 10% Peroxide solution. Pour 1.8 gallons of water into acontainer and add .80 gallons of Hydrogen Peroxide (35%) or pour2.1 gallons of water into the container and add .53 gallons ofHydrogen Peroxide (50%) to the water.

    Soak the discs in this solution making sure the discs are loose and

    have good contact on both sides with the Peroxide solution. Do notput too many discs in at one time.

    Stir the discs in the solution a few times.

    Total soaking time is 1 to 3 hours. If the solution is no longercleaning the discs, replace it with a new mixture.

    Remove the discs and rinse well with water there should no longerbe any residue between the grooves of the discs.

    Put the discs on the spine and spine assembly in the lter bank.

    Flush the lter bank a few times to remove all chemicals.

    Disc Cleaning Instructions or Surace Waterwith Organic and Biological Residue:

    Step 1 Make a 10% Peroxide solution. Pour 1.8 gallons of water into acontainer and add .80 gallons of Hydrogen Peroxide (35%) or pour2.1 gallons of water into the container and add .53 gallons ofHydrogen Peroxide (50%) to the water.

    Soak the discs in this solution making sure the discs are loose andhave good contact on both sides with the Peroxide solution. Do notput too many discs in at one time.

    Stir the discs in the solution a few times.

    Total soaking time is 1 to 3 hours. If the solution is no longercleaning the discs, replace it with a new mixture.

    Remove the discs and rinse well with water there should only be apale sedimentation on the discs.

    Step 2 After the discs have been rinsed with water, they must be soaked in

    a 10% Hydrochloric Acid solution to remove the organic residue.

    Make a 10% Hydrochloric Acid solution. Pour 1.8 gallons of waterinto a container and add .80 gallons Hydrochloric Acid (30-35%)to the water.

    Soak the discs in this solution making sure the discs are loose and

    have good contact on both sides with the acid solution. Do not puttoo many discs in at one time.

    Stir the discs in the solution a few times.

    Total soaking time is 1 to 3 hours. If the solution is no longercleaning the discs, replace it with a new mixture.

    Remove the discs and rinse well with water there should nolonger be any residue between the grooves of the discs.

    Put the discs on the spine and spine assembly in the lter bank.

    Flush the lter bank a few times to remove all chemicals.

    Caution:When blowing out with compressed air, make sure all parts are opened.

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    Troubleshooting

    1

    No Water Going Through the Filter: If the system has upstream and downstream valves around the lter, check to make sure they are open. Check that eld valves are open.

    At start-up, the backush valves need a minimum 12 psi to start working. If air is trapped in the system, close the downstream buttery valve so tha

    pressure builds up at the lter. Then, slowly open the buttery valve to allow water to ow to the eld.

    Verify that the manual override buttons on all the solenoids are in the correct position. For AC and DC continuous solenoids, the dot in the roundbrass knob should be pointing towards the brass base of the solenoid, not towards the black square plastic solenoid coil. For DC latching solenoids, tgreen lever should be vertical. See page 6 for illustrations. If all of the manual override buttons are in the wrong position, water will not ow throughthe lter.

    Make sure all vent tubes are venting to atmosphere with no backpressure.

    No Backfush Operation:

    Check the Upstream and Downstream Pressure The pressure downstream of the lter needs to be at least 40 psi during backushing. The Pressure Sustaining Normally Open (PSNO) Valve should

    be set to at least 40 psi during backushing.

    Check the Command Filter Make sure the command lter is clean. A clogged command lter does not provide command water to the solenoids and backush valves and the l

    will not ush. Also, make sure the 2 ball valve in front of the command lter is open.

    Check the Pressure Dierential (PD) Gauge Make sure the PD gauge is not broken. The set point (the short needle) should be set at 7 psi. The long red needle indicates the pressure differential

    at any given time. If the needle reads zero, then the discs are clean. As the red needle moves towards the shorter (set point) needle, then the discs aregetting dirty. When the two needles touch, the backush controller will initiate a ush cycle.

    Test the PD gauge while the water is on - disconnect the hydraulic tube from the low pressure port of the gauge (the off center port). Water will squout of the tube; you can bend the tube to temporarily stop the water. The long red needle should move quickly and touch the short needle. When b

    needles touch for 15 consecutive seconds, a backush cycle will start. If the backush starts, then the PD gauge is working. If there is no ush, replace the PD gauge. Re-connect the hydraulic tube to the PD gauge.

    Check i the Filter Discs are Clogged To check if the lter discs are clogged, turn off the water and conrm there is no pressure in the system. Open up a lter cover and inspect the discs.

    all of the lters are completely clogged, the lter will not ush.

    Remove the discs and clean refer to the Disc Cleaning Instructions on Page 11 and 12.

    Reassemble the discs on the spine and the lter cover, then tighten the clamp.

    Initiate a backush with the backush controller. If the lter still doesnt ush, refer to the Check the Backush Controller Section below.

    Check the Backfush Controller

    To test the backush controller, initiate a backush by pressing the black button (manual override).

    The solenoid should click and send the lter into ush mode. After 20 seconds, the solenoid should click again and end the backush.

    If the solenoid clicks, then the solenoid is operating and the control panel is not. If the solenoid does not click, then the solenoid needs to be replac

    To test the solenoids: remove the wires of the solenoid from the terminal of the control panel and connect them directly to the power source. For DCmodels, touch the wires. For AC models, connect the solenoid wires to the outlet transformer wires.

    If the backush was not initiated, check wires to verify all connections are secure.

    Push the reset button on the front panel and initiate a backush again.

    Flush a lter individually by turning the manual override of the solenoid 180 degrees. If that lter ushes, then the lter is working hydraulically anthe problem is electric.

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    Troubleshooting

    14

    For DC backush controllers, make sure the batteries are charging. Batteries should be changed every 2-3 years depending upon frequency of lterirrigation and ushing. Use three year life 9 volt lithium or one year life alkaline batteries.

    For AC backush controllers, make sure the transformer is still functioning and replace if needed.

    The controller panel can malfunction if exposed to moist or dusty conditions, rust, or lightning. If you suspect any of these causes, contact thebackush controller manufacturer for inspection and possible warranty or repair. Or call Netam USA Technical Support for assistance.

    Continuous Backfushing:

    Constant Water Flowing Out o the Drain Maniold If there is constant water going through the drain manifold, then one of the backush valves is stuck in the ush position. This can be caused by one of

    these three issues:

    - There may be debris stuck in the drain port of the backush valve which does not allow the valve to return to the ltration position. Determinewhich valve is ushing all of the time. Turn the manual override of the solenoid to ush and then return the knob to ltration. Make sure the knobis in the exactly in the correct position. If the valve is still ushing, turn off the water.

    - Remove the entire 4 drain manifold from the back of the backush valves. Visually inspect the back side of all valves to see if there is debris. Start todisassemble the backush valve from the back by removing the large plastic union. Put the large spring or large o-ring in a secure place. Remove thesmall bolt from the stem, pull out the black round piece and remove any debris. Carefully reassemble the valve and attach the drain manifold.

    - The solenoid may be stuck and not returning to ltration mode. On the Backush Controller, switch the terminal wire (the wire connected toterminal 1 and 2 for example) from a stuck solenoid to a working solenoid. If the problem moves with the solenoid that is stuck, then the problem isin the solenoid. Disassemble the solenoid to clean any debris. If the problem persists, replace the solenoid coil with a new one.

    - The diaphragm of the backush valve may be torn. To conrm, close the ball valve in front of the 2 command lter. If water is still ushing fromthe drain manifold, the diaphragm may be torn. Turn off the water and remove all of the bolts from the bonnet of the valve. Remove the diaphragmand inspect for tear. Replace if necessary.

    Filter Completes a Backfush Cycle, Stops and Backfushes Again: If the lter is constantly backushing by going through a cycle, stopping for 1 minute and backushing again, look at the controller to see if the wordAlarm is ashing. If it is, then the lter is probably clogged.

    The lter will get clogged for the following reasons:

    - There was less than 40 psi on the downstream side of the lter during backush.

    - The water quality changed and became too dirty for the lter to keep up. (Check for severe algae bloom or high silt load).

    - The ow rate was increased by turning on an additional valve, so the lter cannot keep up with the increased ow rate.

    - The diameter of the drain pipe is too long or too small or its plumbed so that it elevates back into a reservoir. All of these will create backpressure onthe lter during the ush cycle and have a negative effect on the quality of the ush. The drain pipe should be at least 4 diameter, not to exceed 50feet long and free ow to a drain pit. If the drain pipe needs to be longer than 50 feet, use a 6 pipe. There should not be a check valve or gate valve

    on the drain pipe.- Remove the discs from the spines and clean them manually. Refer to the Disc Cleaning Instructions on Pages 11 and 12.

    Check the Backfush Controller (cont)

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    Replacement Parts

    1 - - 4" Drain Manifold2 - - Outlet Manifold3 - - Inlet Manifold

    4 70040-003100 44VIC04 4" Victaulic Coupling5 70620-003444 25AP14941001 Cover, Clamp, Housing Assembly6 71600-006855 61BFG4GPG-DM 4" Plastic Backflush Valve7 71680-000790 61PIL25300 Plastic Hydraulic Relay Accelerator8* 76400-003400 55P4694802 Plastic Elbow 8mm x 1/8" M for Solenoid & Relay9 76400-004635 25AP50780433 Plastic Tee 12mm x 3/8" M for Relay10 76400-003575 25AP50780432 Plastic Elbow 12mm x 3/8" M Thread11 - - Support Leg12 70561-001700 65ARIB2PP 2" Combination Air Vent13 - 25AP50480222 Extension for Combination Air Vent14 - 25AP22530001 Pressure Gauge Assembly15 76400-003500 55P4694804 Plastic Elbow 8mm x 1/4" M16 78201-010100 44VICCP04 4" Victaulic Cap17 70640-005313 25A49-120SDS 2" Command Filter18 70620-007585 25AP22531213 Plastic Cap for Command Filter 3/8" F Port

    19 - 25AP50540009 1/4" Ball Valve20* - - Ball Valve O-Ring21 76400-007200 55P1030404 1/4" x 1/4" Threaded Coupler22 - 25AP50540118 2" Ball Valve23 70620-002255 25AP22534043 Plug for Drain Manifold24 70620-004860 25AP22530425 4" Flange Assembly25 75050-008500 595177100 1" Plug26 - 25AP22530512 1/2" Vacuum Breaker on Drain Manifold27 - - Lifting Hook28* 00105-007500 25AP50500116 12mm Soft Control Tube29 40001-000382 15CONT8C50 8mm Control Tube (50' roll)30 70800-003260 61BBC-024 24VAC Normally Closed Solenoid

    - Call for Model Numbers, will be different based on filter configurations.* Not Shown

    Key Item Number DescriptionModel Number

    Galaxy Disc-Kleen Filter Battery Parts

    Detail A

    Detail B

    Detail C

    Detail D

    Detail E

    4

    7

    16

    6

    27

    30

    16

    2316

    or 109

    7

    26

    2524

    17

    10

    21

    15

    22

    19

    Detail B

    Detail ADetail C

    Detail D

    Detail E

    12

    11 14

    1213 5

    22

    10

    18

    29

    11

    22

    19

    21

  • 8/6/2019 A050 Galaxy Manual

    16/16

    NETAFIM USA

    5470 E. HOME AVE.

    FRESNO, CA 93727

    CS 888 638 2346

    F 800 695 4753

    www netafimusa com A050 10/09

    Replacement Parts

    1 70620-002260 25AP22530040 Filter Cover - Polymer1 70620-002265 25AP25010402 Filter Cover - Polypropylene2 70620-008351 25AP50403409 Stainless Steel Bolt - Polymer Cover2 70620-008352 25AP50403410 Stainless Steel Bolt - Polypropylene Cover3 - 25AP50420042 Clamp Half4 70620-008350 25AP50408140 Brass Nut5 70620-003600 25AP21991002 Spine Assy Complete w/out Rings5a 70620-006000 25AP25060224 Butterfly Nut5b 70620-007390 25AP25060226 Tightening Cylinder5c 70620-006450 25AP25300216 Piston5d 70620-006480 25AP25531225 Sliding Washer5e 70620-005850 25AP50760009 Abrasion Shield5f 70620-007050 25AP50060008 Cone Membrane6 70620-001667 25AP20221-080DK Ring Set Only - Yellow, 80 Mesh6 70620-001670 25AP20221-120DK Ring Set Only - Red, 120 Mesh6 70620-001675 25AP20221-140DK Ring Set Only - Black, 140 Mesh7 70620-007055 25AP50060012 Seal

    8 70620-007057 25AP50060014 O-Ring Flat Seal9 70620-002235 25AP22491001 Filter Housing - Polymer Cover9 70620-002230 25AP22491005 Filter Housing - Polypropylene Cover10 70620-008290 25AP22530042 Clamp Assembly - Polymer Cover10 70620-008300 25AP22530044 Clamp Assembly - Polypropylene Cover11 70620-007900 25AP50760028 Butterfly Nut Wrench12 70620-008000 25AP133499 Spine Wrench- 70620-011500 27AP5B00000024 Controller Mounting Bracket- 70620-007575 25AP22531018 Plastic Cap 1" Control Filter 1/4" F port- 70620-007580 25AP22531211 Plastic Cap 1" Control Filter 3/8" F port- 70620-007585 25AP22531213 Plastic Cap 2" Control Filter 3/8" F port- 70620-007590 25AP22531214 Plastic Cap 3/4" Control Filter 1/4" F port- 00105-007500 25AP50500116 Black 12mm soft control tube- 76400-003575 25AP50780432 Plastic Black Elbow 12mm x 3/8" M thread- 76400-004635 25AP50780433 Plastic Black Tee 12mm x 3/8"

    - 70041-004000 25AP22541230 Mounting Bracket for Backflush Controller- 75200-003500 25AP50127501 Round O-Ring for Drain Manifold- 75200-003670 25AP50127505 Flat O-Ring for Drain Manifold

    NOTE: For ITEM NUMBERS not listed, contact Netafim USA Customer Service.

    Key Item Number DescriptionModel Number

    Galaxy Disc-Kleen Filter Battery Parts

    71600-006855 61BFG4GPG-DM 3 Backflush Valve71680-016900 25AP5060442408 3 Backflush Valve Stem Rubber Seal70620-012850 25AP50032246 O-Ring for Female Threaded Adapter

    Item Number DescriptionModel Number

    Galaxy Disc-Kleen Filter Backflush Valve