Owner’s ManualShould you the installer or owner be unfamiliar with the cor-rect installation or operation of this type of equipment youshould contact the distributor/manufacturer for the correctadvice before proceeding with the installation or operationof the product.

Sand Filters

Relax - you’ve bought an Onga ...Congratulations on your decision to purchase an Onga

product. Onga is one of the best known companies in itsfield, with a proud local and international reputation.

In fact, wherever people need to move water from one point toanother - whether in leisure industry, horticulture, agriculture or inand around the home - Onga is a byword for reliability, value formoney and technological innovation. So why does Onga lead itsfield? Here are a few simple reasons ...

1. Continual Product ImprovementOnga employ the best engineers both in Australia and around theworld to develop new and better ways to pump and handle water.

2. Dedication to QualityThere is only one standard that we at Onga set ourselves for bothproduct quality and the quality of our service. That standard isexcellence ... to have no-one better than us at what we do ... nothingshort of that is acceptable.

3. A Fair PriceOnga products are neither the cheapest nor the most expensive intheir field. Our products do, on the other hand, always representvery good value for money - they always have and they always will.

4. Our Team of DealersWe believe Onga’s hand picked authorised dealer network through-out Australia and worldwide are second to none. We invest a hugesum training them and supporting them. They are your link to us,and we value their expertise and trust.

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IMPORTANT!The operator must be provided with this owner’s manual. This must be readbefore operation and followed during operation.These instructions are a guide only. Users not familiar with pool equipmentshould seek advice from suitably qualified persons with experience in poolequipment installation.

Onga Leisure Time Sand FiltersModels LSF20 & LSF24

The Australian made Leisure Time range of sand filters are designed to give yousparkling clean swimming pool water without requiring too much maintenance.These filters incorporate a unique balanced flow design which ensures that water isevenly distributed over the entire filter bed for more efficient operation.

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Technical DataLSF20 LSF24

Filter Diameter 20 inch 24 inch

Filter Area Sq. M/Sq. ft. .196/2.11 .265/3.14

Max. Working Pressure 230 kPa 230 kPa

Max. Flow (LPM) 168 250Minimum Flow for Back washing 119 162

Filter Height (to top of valve) 760mm 860mmClearance required above filter for maintenance 600mm both models

Sand grade 0.8mm-1.5mm/16-40 (kg) 60 100Zelbrite (kg) 45 75

Valve size (inch / mm) 1.5 / 40 1.5 / 40Connection to suit PVC pipe 40mm internal 40mm internal

Pool volume @ 6 hour turnover (litres) 60,000 80,000

WARNINGDue to excessive cycling, this filter is not

suitable for use on inbuilt In-Floor CleaningSystems

Filter Application - General Information

This filter is designed for use in domestic/residential swimming pool installa-tions with correctly sanitised fresh or salt chlorinated water. Suitable for usewith sand or Zelbrite filter media.

1) Locate the filter system as close to the pool as practical.

2) Place the filter on a level stable foundation, preferably a concrete pad orpaving.

3) Position all equipment to provide ease of access for future servicing. Ensurethat there is sufficient clear space above the filter to allow for removal of themulti-port valve for servicing.

4) Protect the filter and pump from weather and direct sunlight by ensuringthat they are properly housed.

5) Ensure there is sufficient space to provide adequate ventilation to electricpump motor.

6) Clean a new pool as well as possible before filling pool and operating filter.Excess dirt and large particles of foreign matter in the system can causeserious damage to the filter and pump.

7) Ensure pump is compatible with filter specifications.

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FEATURES BENEFITSEight easy fold under drain laterals

Manufactured from high qualityengineered plastics

Large Sight Glass

Six position Multi-port Valve

Fitted Barrel Unions

Colour coded Pressure Gauge

Increases filtering efficiency for clearer water

Extends filter life and protects against UVRadiation

Easy to view sight glass minimises wastewater consumption

Provides convenient use of available func-tions ALL year round

Ease of installation and servicing

Shows at a glance when back washing isrequired

Multi-Port Valve Settings

WARNINGIncorrectly installed or tested equipment may fail, causingsevere injury or property damage. Read and followinstructions in owner’s manual when installing and operatingequipment.Have a trained pool professional perform all pressure tests.

Hazardouspressure

Hazardous Pressure!Hazardous Pressure!Hazardous Pressure!Hazardous Pressure!Hazardous Pressure!Can cause severeCan cause severeCan cause severeCan cause severeCan cause severeinjurinjurinjurinjurinjury or majory or majory or majory or majory or majorproperty damage fromproperty damage fromproperty damage fromproperty damage fromproperty damage fromtank explosion.tank explosion.tank explosion.tank explosion.tank explosion.

Filter pumps requirehazardous voltagewhich can shock,burn, or cause death.

DANGER

WARNINGDisconnect power tomotor.

BEFORE WORKINGON FILTER:

BEFORE WORKINGON PUMP OR MOTOR

1. Stop pump2. Release all pressure from system, by turning Valve handle to waste.

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Installation of Filter should only be carried out by qualified personnel.Ensure that the under-drain assembly (hub, laterals & tube) are properlyassembled & installed prior to adding filter media (sand or Zelbrite).

1) The filter internals comprise of a collector hub and eight (8) laterals, whichare supplied partially assembled and are stored in the filter tank prior toshipment.

2) Carefully inspect the laterals and hub prior to assembly for any visibledefects.

3) Position the hub in the centre of the tank and push the laterals down untilthey engage with an audible “click”.

4) Cover the centre tube to prevent filter media from entering the hub andlateral assembly, then slowly pour the required weight of filter media intothe filter tank. Ensure that the top of the sand/media bed is level. Ensure thatthe centre tube remains central in the neck of the filter.

5) Remove the centre tube cover and remove all traces of sand/media from thetop of the tank.

6) Place tank ‘O’ring into groove in Multi-port Valveand position the valve on top of the tank, inserting thecentre tube into the recess on the bottom of the valve.Ensure that the threaded port labelled “pump” isfacing in the direction of the pool pump.

7) Fit the tank clamp and tighten the bolts securely.

8) Complete the plumbing between the Multi-port valveand the pool pump. Install the pressure gauge, usethread tape and hand tighten(DO NOT OVERTIGHTEN as valve damage may occur).

9) Complete the plumbing installation.Note: Use pipe fittings (unions) supplied by Onga.

INSTALLATIONThis kit contains;Carton A (Tank Carton) Carton B (Valve Carton)Filter Tank x 1 Six Position Multiport Valve x 1Centre Stem Assy x 1 Colour coded Pressure Guage x 1Valve to clamp half x 2 ABS Barrel unions (White) x 2Clamp Nut and Bolt x 2 Waste Barrel Union (Clear) x 1Valve to Tank ‘O’Ring x 1Tools are required to tighten clamp nut and bolts.

To prevent equipment damage and possible injury, turnpump OFF before changing valve position.

START UP/OPERATION

Hazardous pressure. To avoid explosion and possiblesevere or fatal injury, filter system pressure must not exceed 33 psi (230 kPa)under any circumstances. NEVER test this filter system with compressed air;never operate system with water temperature above 38ºC.

NOTE: Do not add chemicals directly into the pool skimmer. Adding undilutedchemicals may damage equipment and void warranty.

1. Open system valve and make sure pump is filled with water. Make sure poolwater level is 2” (50mm) above bottom of skimmer opening.

2. With pump OFF, set valve to ‘BACKWASH’ position.

3. Start pump, circulating water through filter to waste.NOTE: To prevent pump from running dry, be sure water level never dropsbelow bottom of skimmer inlet. Add water to pool if necessary to keepskimmer flooded while back-washing and rinsing.

4. Backwash until water runs clear (1-5 minutes).

5. Stop pump; set valve to ‘RINSE’ position.

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INSTALLATION (Continued)

Hazardous pressure. Clamp will not hold unless it is seatedproperly! DO NOT START PUMP until the Multiport valve clamp is seatedand tightened securely.All glued fittings and pipe work should be allowed to dry to atmosphere for24 hours before closing installation. Failure to do so could cause injury orinstallation failure.The fittings on these filters are constructed of ABS. Some PVC jointingcompounds are incompatible with ABS possibly causing failure to theproduct. Check compound suitability prior to use.

If there are leaks from beneath valve/clamp area, STOPPUMP, release all pressure, remove clamp and valve andclean sealing surfaces.

START UP/OPERATION (Continued)

6. Start pump; run pump for 1 minute.Note: for Zelbrite repeat steps 1 through 6 three times.

7. Stop pump; set valve to ‘FILTER’ position.

8. Filter is now ready for service.

9. Record clean starting filter pressure gauge reading as a reference.

10. For new pools, backwash once a day until pool water is sparkling clear.Backwash when pressure gauge shows 5 to 7 psi (35 to 50kPa) higher thanclean starting pressure (refer step 9).

SERVICE &MAINTENANCE

General:Wash outside of filter with a mild detergent and water. Rinse off with hose.

NOTE: DO NOT use solvents to clean filter; solvents may damage components insystem.

Inspect sand/media bed at least once a year to remove foreign material which hasnot been back-washed out of the system.

NOTE: When the sand/media bed gets hard and crusty on top, remove all the oldsand/media and replace it with new sand/media. Alternatively, if the pressure gaugedoes not return to within 40kPa of clean filter pressure after back-washing, it istime to replace the filter media.

Weekly Pool Equipment Inspection1. Check pressure during operation. When pressure is 5 to 7 psi (35 to 50 kPa)

higher than clean operating pressure, backwash filter (see instructions under“Startup/Operation, Page 7).

2. Except during hot weather with heavy skimmer loads, operating filter 6 to 12hours per day should be sufficient. Carefully monitor water chemical balanceand follow recommendations of your local pool professional.

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Water MaintenanceKeep water level at least 2” (50mm) above bottom of skimmer opening.Failure to do so can allow air to enter system, causing pump to lose prime and airto enter filter.

Maintain pH between 7.2 and 7.6 in pool.

To prevent damage to system components, keep watertemperature below 38ºC at all times.

Vacuum Pool (Refer cleaner operating manual or consult your local poolprofessional):1. Fill vacuum hose by submerging in water from one end to the other.

2. To vacuum, insert hose into skimmer suction manifold or into vacuum line inpool wall. See instructions provided by the pool builder or pool manufacturer.Start pump, making sure it is primed and pumping.

3. After vacuuming, clean pump trap basket to remove accumulated debris, thencheck filter pressure gauge. If reading is 5 to 7 psi ( 35 to 50kPa) higher thaninitial operating pressure, backwash filter.

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SERVICE &MAINTENANCE (Continued)

Lower or Drain Pool1. Turn pump ‘OFF’; set valve handle to ‘WASTE’.

2. Use vacuum cleaner hose and head.

3. Start pump; run until pool is lowered to desired level.

4. Turn pump ‘OFF’ set valve handle to ‘FILTER’.

5. Start pump.

Hazardous pressure. Stop pump and release all pressurefrom system before working on filter, valve, or clamp.

If Multi-port Valve is below pool water level, close suction and discharge valvesbefore disassembly to prevent draining pool.1. Disconnect piping from pump and pool.2. Remove clamp.3. Remove valve from filter top.4. To reinstall valve, follow instructions BE SURE to follow clamp tightening

instructions.

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SERVICE &MAINTENANCE (Continued)Multiport Valve Removal

Models LSF20 & LSF24

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Models LSF20 & LSF24

Item Description Qty. 1 Pin – Valve Handle 1 2 Spring – Multiport Valve 1 3 O’ring – Multiport Valve Cap 1 4 O’ring – Multiport Valve Rotor 1 5 Barrel Union 3 6 Nut & Bolt – Clamp (Set of 2) 1 7 Clamp – Half 2 8 O’ring – Valve to Tank 1 9 Centre Tube assembly (Includes items 9, 10 & 11) 1

10 Hub – Underdrain 1 11 Lateral 8 12 Tank Assembly 1 13 Tail – Clear 1 14 Valve Body – Multiport 1 15 Pressure Gauge 1 16 Rotor & Gasket – Multiport 1 17 Valve Cap 1 18 Valve Handle 1 19 Valve Top Ring 1 20 Multiport Valve Complete 1 21 Decal 1 Model and serial number of filter must be given when ordering spare parts

Specify Model Number applicable to your filter when ordering spare parts

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TROUBLE SHOOTING CHART

PROBLEMS CHECK LIST

No WaterDischarge

Pool water level too low. (Check water level in weir skimmer).Air leaks in inlet fittings to pump. (Check and tighten allconnections. Teflon tape fittings)

Short Filter Cycles High pressure gauge indicates the filter is dirty.Filter not backwashed for long enough period.Algae present in pool water.DON'T RUN FILTER WITH LIVE ALGAE IN POOL.Check the chemical condition of pool water and refer to Pool WaterChemical Treatment.NOTE: Incorrect chemical treatment will greatly shorten filter cycle.

Filter StartupPressure Low andWater Flow Low

Skimmer Basket full of leaves or debris.Pump Strainer LId not sealed correctly.Pool Water level too low.Pump Impeller Blocked - #Blockage in Suction Line - #Air Leak in Suction Line - #

Filter StartupPressure High andWater Flow Low

Filter requires backwashReturn Line restricted - check valvesDE FiltersSeptum clogged through too little DESeptum clogged by suntan oil, chemical scaling

Leaking From FilterTank Joint

Tank "O" Ring dirty. - #"O" Ring incorrectly fitted. - #"O" Ring damaged (pinched). - #Clamp Band not correctly fitted - #

# Call Serviceman

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Onga Product Warranty

Onga warrants that, when this product is used for the purpose it was designed, is correctly housed and ventedagainst weather, vermin, dust etc., that it will be free of material and manufacturing defects at the time of theoriginal purchase.This warranty is limited to the cost of the product and does not cover third party costs including thecosts of electricians, plumbers, etc. unless authorised by Onga pumps.

TERMS AND CONDITIONS APPLICABLE INTERNATIONALLYHow long the warranty is effective Internationally

1) This Onga product is warranted for 12 months for all parts from the date of the first consumerpurchase. Should any parts fail as a result of such defects within the specified period, the part will bereplaced free of charge. (This does not include travel charges, removal and reinstallation charges.)

TERMS AND CONDITIONS APPLICABLE IN AUSTRALIA ANDNEW ZEALAND

1) YOU SHOULD CAREFULLY READ THE INSTRUCTIONS SUPPLIED PRIOR TO USING THIS ONGAPRODUCT.This product is to be installed and operated in accordance with the instructions provided. Thiswarranty will not apply if it is used in a manner otherwise than in accordance with theinstructions.

What the warranty covers:

Onga warrants its products to be free of defects in material and workmanship during the warrantyperiod. If a product proves to be defective in material or workmanship during the warranty period,then Onga will, at its sole option repair or replace the product with a like product. Replacement productor parts may include re-manufactured or refurbished parts or components.How long the warranty is effective:1) This Onga tank is warranted for 10 years (Multi-port valve and Laterals 12 months) from thedate of the first consumer purchase.2) Where this Onga product is sold for commercial application as defined in the relevant TradePractices and Consumer Protection legislation the warranty shall be for a period of three monthsfrom the date of purchase by the end user.3) Ancillary equipment including but not limited to plastics and metal fittings, electrical controls(including touch pads), bladders, pressure switches, filter cartridges, pressure gauges, etc. shall bewarranted for a period of twelve months only in relation to consumer applications and six monthsin relation to commercial applications.Who the warranty protects:This warranty is valid only for the consumer purchaser.What the warranty does not cover:1) Damage, deterioration or malfunction resulting from:

a) accident, misuse, negligence, fire, water, lightning, or other acts of nature, unauthor-ised product modification or failure to follow instructions supplied with the product;

b) repair or attempted repair by anyone not authorised by Onga;c) any damage to the product due to shipment;d) removal or installation of the product;e) causes external to the product such as electric power fluctuations or failure;f) use of supplies or parts not meeting Onga specifications;g) normal wear and tear;h) water ingression or exposure to abnormal corrosive conditions or “run dry” conditions;i) any other cause which does not relate to a product defect.

2) Damage caused to the product as a consequence of use of another manufacturer’s productused in conjunction with Onga and affiliate companies.

3) This warranty does not cover such products as combustion engines or other componentparts of units not manufactured by Onga, but where possible Onga will make available topurchaser the benefit of any warranty of that manufacturer.

4) This warranty does not cover underwater light bulbs, underwater lights will only bewarranted if wiring is to approved standards, and an approved transformer incorporatingthermistors has been used, running the light not submerged in water will void warranty.

5) Hydrostatic relief valve supplied separately or incorporated in products are sold with theexpress understanding that such products offer limited hydrostatic relief and no offer ismade or implied as to the suitability of such products for a specific application as theircondition at the time of sale are unknown and beyond Onga’s control. It is the responsibilityof the installer to ensure that the performance of the valve meets the required application.

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Onga Product Warranty (Continued)

6) Swimming pools or spa equipment will not be warranted where the Langelier saturationindex ‘pH’ range is outside 7.2 to 7.6 and they have not been regularly treated with chlorine orbromine based sanitising systems, or other recognised sanitising systems.

Spare Parts:Spare parts are usually stocked for a reasonable period of time following last production.

Onga does not warrant that spare parts will be made available for the whole of the reasonableperiod and reserves its right to cease supplying spare parts or providing facilities for repair ofspare parts in circumstances which are beyond its control including the requirement to removespare parts from sale as a consequence of changes in the law or otherwise as it deems fit.

How to get service: In Australia please contact 1800 664 266 In New Zealand please contact 0800 664269

Claims under this warranty must give evidence of date of purchase, model and serial number of the product and the claimants name, address and telephone number.

1) To obtain warranted service, you will be required to provide to either Onga state office orrecommended service agent:-a) the product;b) confirmation in writing specifying the nature of your claim;c) proof providing date of original purchase;d) full contact details including name and address;e) the serial number of the product if any.

2) The product is to be forwarded by the customer freight paid to an Authorised Onga serviceagent.Infield service by an authorised Onga Service Agent will incur a travel, removal & reinstalla-tion fee to adjudicate on warranty issues.Authorised warranty will be free of charge for the first 12 month period from date of the firstconsumer purchase.

3) Warranty service work will be denied or suspended, on equipment not readily accessible toservice personnel, that is products that are behind barriers, tiled or bricked in, installed inroofs or second story external walls including inaccessible power points.

4) Any service of any product which is found to be faulty due to abuse, misuse or improperinstallation will be charged to the owner at the service agents current servicing hourly rate.

Limitation of implied warranties:THERE ARE NO WARRANTIES, EXPRESSED OR IMPLIED, WHICH EXTEND BEYOND THE DESCRIPTIONCONTAINED HEREIN INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR APARTICULAR PURPOSE.

Exclusion of damages:ONGA’S LIABILITY IS LIMITED TO THE COST OF REPAIR OR REPLACEMENT OF THE PRODUCT. ONGA SHALLNOT BE LIABLE FOR:1) DAMAGE TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN THE PRODUCT, DAMAGES BASED

UPON INCONVENIENCE, LOSS OF USE OF THE PRODUCT, LOSS OF TIME, LOSS OF PROFITS, LOSSOF BUSINESS OPPORTUNITY, LOSS OF GOODWILL, INTERFERENCE OF BUSINESS RELATION-SHIPS, OR OTHER COMMERCIAL LOSS, EVEN IF ADVISED OF THE POSSIBILITY OF SUCHDAMAGE.

2) ANY OTHER DAMAGES, WHETHER INCIDENTAL, CONSEQUENTIAL OR OTHERWISE.3) ANY CLAIM AGAINST THE CUSTOMER BY ANY OTHER PARTY.

Effective law:This warranty gives you specific legal rights, and you may also have other rights which vary fromstate to state. Nothing in this warranty limits or restricts, or is intended to derogate from, any rightor remedy which the purchaser or ultimate user of the product may have pursuant to Australianstate and/or Australian federal consumer protection legislation, New Zealand Sale of Goods Act,Consumer Guarantees Act, Fair Trading Act or any other relevant and applicable New Zealandlegislation or authority and where necessary shall so be read and construed.

Purchased From

Purchase Date Serial No Model No

IMPORTANTPlease attach your sales invoice/docket here as proof of purchase shouldwarranty service be required.

Please do not return Warranty - Retain for your records.

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Ask your local Onga retail outlet about the extensive family ofOnga products

Great White Automatic Pool CleanersHydrostatic Relief Valves

Salt ChlorinatorsPool Brooms

Skimmers& more

RakesTelepolesLeaf ScoopsVacuum HoseVacuum HeadsWater Testing Kits

ZelbriteFilter Sand

Solar PumpsValves, Fittings

Filtration PumpsGenuine Spare Parts

L30

0038

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/07/

2003