Pentair Pac Fab Nautilus FNS
Contents
1. Partially closed valve or restriction in return line 1 Obstruction in pump hair and lint strainer 2 Obstruction in pump 3 Obstruction in suction line to pump 1 Improper backwash 2 Pool chemistry not adequate to inhibit algae growth 3 improper precoat of DE on grids 4 Plugged grids 5 Flow rate too high 1 improper torque o Closure Band hardware 2 Debris contamination on O ring and Cat er damaged O ting READ AND FOLLOW ALL SAFETY INSTRUCTIONS The D E will eventually be itered out of the pool Mo action necessary Replace damaged grids or O rings Correct assembly of parts install or repair check valve Use recommended amount of DE Consul dealer or pool service technician Maintain pool chemistry or consul pool service technician Backwash until effluent runs clear Manually clean filler grids Chemically clean filler grids Open valve or remove obstruction in lines Open valve in suction line Clean basket in strainer Disassemble and clean pump Clean skimmer basket Remove obstruction in lines Backwash until effluent runs clear Maintain pool chemistry or consult pool service technician Use recommended amount of DE Manually clean or chemically clean as required Restrict Sow to capacity of filter Reassembie ciamp ollowing procedure under Assembly on page 5 Clean O ring and flanges Lubricate 0 ring Replace o ring NAUTILUS FNS M2. WARNING Releasing clamp with pressure on system will blow lid off of tank causing severe injury or major property damage NOTICE Do not expose element cloth to direct sunlight for long periods Direct sun light will cause the cloth to deteriorate NOTICE To avoid damaging fabric do not allow filter element to rub on concrete or any abrasive surface during cleaning 4 Disassemble Filter WARNING To avoid severe injury or major property damage exactly follow instructions under Disassembly Page 4 5 Disassemble and inspect element grid assem blies for tears and worn areas Replace as needed 6 Rinse each grid thoroughly with water 7 Wash each grid with a mild soap solution If necessary soak element grids in filter cleanser to remove buildup of oils etc 8 Rinse thoroughly to remove all soap film 9 To remove mineral buildup from filter cloth soak each element grid two to four hours in a solution of one part muriatic acid to ten parts water Some foaming may occur WARNING Follow manufacturer s instructions Danger of burns or explosion Do not add water to acid always add acid to water Do not allow acid to touch your skin Do not use acid without eye protection and rubber gloves READ AND FOLLOW ALL SAFETY INSTRUCTIONS 10 Rinse each element grid thoroughly with water 11 Reassemble element grids 12 Inspect inside of filter tank and remove all debris remain
3. figured and sized to meet your local health codes Part no s in parenthesis refer to the replace ment parts as shown in the exploded drawing at the end of the manual WARNING Failure to run your filter or inadequate filtration can result in pool water clarity that could obstruct visability and allow diving into or on top of obscured objects which can cause serious personal injury or drowning Clear water is the result of proper filtration as well as proper water chemistry Pool chem istry is a specialized area and you should con sult your local pool service specialist for spe cific help or instructions In general proper pool sanitation requires a free chlorine level of 1 to 2 PPM and a PH range of 7 2 to 7 6 FILTER OPERATIONAL DATA FLOW RATE PE ai TURNOVER CAPACITY Bosed eO P 6 Hrs 8 Hrs 10 Hrs 12 Hrs irae 2206 2 06 046 25 920 34 560 43 200 51 840 Deseo sono READ AND FOLLOW ALL SAFETY INSTRUCTIONS NAUTILUS FNS MANUAL WARNING FILTERS SHOULD NEVER BE TESTED OR SUBJECTED TO AIR OR GAS UNDER PRESSURE ALL GASES ARE COMPRESSIBLE AND UNDER PRESSURE CREATE A DANGER SEVERE BODILY INJURY OR PROP ERTY DAMAGE COULD OCCUR IF THE FILTER IS SUBJECTED TO AIR OR GAS PRESSURE Check carton for any evidence of damage due to rough handling in shipment If carton or any filter components are damaged notify freight carrier immediately After inspection car
4. of operating pressure readings This can be done conve niently while winterizing pool in cold cli mates Use this method regularly if no means of backwashing is available NAUTILUS FNS MANUAL BEFORE DISASSEMBLING FILTER 1 Backwash filter as recommended but do not precoat with new D E 2 STOP PUMP 3 OPEN air bleeder screw 4 WAIT until all pressure is released from filter tank and system before loosening clamp WARNING Releasing clamp with pressure on system will blow lid off the tank causing severe injury or major property damage 5 Disassemble filter See Page 4 WARNING To avoid severe injury or major property damage exactly follow instructions under Disassembly Page 4 6 Grasp element assembly at top manifold using hand holds and lift to remove it Figure B 7 Hose down element assembly and clean with bottle brush Figure C Use detergent solu tion or filter cleanser available from a pool service store FIGURE C READ AND FOLLOW ALL SAFETY INSTRUCTIONS PAGE 7 NOTICE Toavoid damaging fabric donotallow filter element to rub on concrete or any abrasive surface during cleaning NOTICE Do not expose element cloth to direct sun for long periods Direct sun will cause the cloth to deteriorate 8 Inspect grid cloth for tears calcification plugged areas etc If necessary soak element in filter cleanser to remove buildup of oils etc It is recommended that an
5. ANUAL PAGE 12 NOTES READ AND FOLLOW ALL SAFETY INSTRUCTIONS 18 5000 REV 601
6. FOR P N 19 5107 15 2 V DIM A FOR P N 19 5308 8 1 V Nautilus FNS filters manufactured earty in 1992 may not contain Ham 43 44 a n the replacement parts drawing but wil contain two brass hes nuts P N 19 5152 Do not attempt to terchange c t3 between ihe hwo different band yoes MU PAC FAB READ AND FOLLOW ALL SAFETY INSTRUCTIONS NAUTILUS FNS MANUAL PAGE 10 WTEM PARTNO DESCRPTION om 1 27 9506 BLEEDER SCREW 2 5353 ORINGBLEEDER SCREW 1 312730 CAPARRELEFVAVE J1 5 273555 VALVE BOOY MACHINED 3 Ji 6 155050 PRESSURE GAUGE 4 t 7 144p ORNG2SPIDXYWDA 2 Lu 238p TOP SPACER 5 vj 2 z35 AEP 3 99 194008 eg 0 11 15 195950 ST WEXT AIR RELIEF 1 15 19506 TAMKTOPFNSABSTWEXTARREUEF 1 _1S 195052 TAMKTOPFNSEOSTWEXTARREUEE Y 1S 195941 BLK W E HOLE 1 19 5942 TANK TOP FNSBO BLK Wi2 38 HOLE EEEE m in eee HREREEEEE H il Ji e 20 195213 PIPINGASSY UPPERFNS24 J1 30 195214 PPIGASSYUPPERFNSSE 5 195215 PPNGASSYUPPERPISM Ji PIPING ASSY UPPER FNS 60 iniri s ji dE D TANK BTM FNS 3548 60 BLK BUTTRESS THREAD TANK BTM FNS 24 TAN BUTTRESS THREAD TANK BTM FOOT AND PIPING FNS24 BLK TANK B
7. NAUTILUS FNS ow FIBERGLASS D E FILTER INSTALLATION OPERATION amp SERVICE MANUAL WARNING THIS MANUAL CONTAINS IMPORTANT SAFETY INFOR MATION WHICH MUST BE FURNISHED TO THE END USER FAILURE TO READ AND FOLLOW INSTRUC TIONS COULD RESULT IN SERIOUS PERSONAL IN JURY AND OR MAJOR PROPERTY DAMAGE TABLE OF CONTENTS How Your Filter Works 2 G Manual Filter Cleaning 6 7 A B eSI UA 3 H Chemical Cleaning 8 DLE 4 I Winterizing Procedure 8 D Filter Disassembly Assembly 4 5 J Replacement Parts 9 10 E Cleaning Frequency 6 K Troubleshooting Guide 11 F Filter Backwash Procedure 6 MEMBER emm 5 CORPORATE OFFICE AED Santord NC Nf Cy 919 774 4151 n O A Ae INSTITUTE NAUTILUS FNS MANUAL This filter operates under pressure When closed properly and operated without air in the water system this filter will operate in a safe manner Warning labels should be affixed to the top of the filter and on the clamp bands at all times Keep safety labels in good condition Replace missing or damaged safety labels For free lab els call 1 919 774 4151 A HOW YOUR FILTER WORKS Your vertical grid diatomaceous earth D E filter is designed to operate for years with proper maintenance The filter housing is made of cor
8. TM FOOT AND PIPING FNS36 BLK TANK BTM FOOT AND PIPING FNS48 BUX TANK BTM FOOT AND PIPING FNSSO BLK TANK BTM FOOT AND PIPING FNS24 TAN TANK BTM FOOT AND PIPING FNS36 TAN TANK BTM FOOT AND PIPING FNS48 TAN TANK BTM FOOT AND PIPING FNSS0 TAN Cb RBA WAA AAA ew sass ADAPTOR FNS BUTT THD USE W 19 530 O RING ADAPTOR 6 FNS 08S YETHYLENE iiem i NOTE Complete grid assembly consists of One each of items 16 39 47 and 18 Four each of items 37 and 38 two each of t y Wem 40 and seven each of item 17 i z oe Ef in sut HH E EE M 4 amp MOM T 199 19 14 15 Capacity a 15 CUR READ AND FOLLOW ALL SAFETY INSTRUCTIONS NAUTILUS FNS MANUAL K TROUBLESHOOTING GUIDE PROBLEM CAUSE REMEDY OE Leaking back to pool Pool water not sufficiently clean High filler pressure after backwashing Return flow to pool diminished Low filler pressure Short Cycies Leakage st clamp 1 After backwashing and re coating the filter with D E some amount of puffback is normal 2 Damaged Grid or O ring in filter assembly 3 improper assembly of internal parts 4 Missing or defective check valve 1 improper precoat of DE on grids 2 inadequate turnover rate 3 Pool chemestry not adequate to inhibit aigae growth 1 insufficient backwashing 2 Filler cloth plugged with D E and contaminants 3 Filter cloth plugged with mineral deposits 4
9. approved cleaner be used Please contact your local pool chemical supplier or retail store for the proper cleaner Mix a solution following the manufacturer s instructions on the label Placethe entire grid assembly in a plastic container and add the solution so the entire grid assembly is sub merged Allow to stand overnight 12 hours The following day wash with a hose and remove all of the solution from the grids so it does not return to the pool If calcified per form the chemical cleansing procedure des cribed under Chemical Cleaning Procedures 9 Thoroughly clean air relief filter screen 10 With filter drain open hose down the internal portion of filter and thoroughly clean sealing area of tank halves 11 Replace the grid assembly by setting the manifold opening directly over the connector pipe Push down on the grid assembly and check to see that it is seated properly 12 Thoroughly clean drain plug seal and sealing area and replace and tighten plug WARNING To avoid severe injury or major property damage exactly follow instructions under Assembly Page 5 13 If unit is returning to service see Initial Startup Page 4 14 If cleaning is part of seasonal shutdown see Winterizing Page 8 NAUTILUS FNS MANUAL H CHEMICAL CLEANING PROCEDURE 1 STOP PUMP 2 OPEN air bleeder screw 3 WAIT until all pressure is released from filter tank and system before loosening clamp
10. bows restrict flow For best efficiency use the fewest possible fit tings large diameter pipe at least 1 1 2 preferably 2 amp locate equipment as close to the pool as possible 10 A check valve is recommended between the 11 12 13 14 15 READ AND FOLLOW ALL SAFETY INSTRUCTIONS filter and heater to prevent hot water back up which will damage the filter and valve Another check valve is recommended between the filter and the pump to prevent D E from migrating back to the pool when the filter is off The maximum operating pressure of this unit is 50 pounds per square inch Never operate this filter above this pressure or attach a pump to this filter that has more than 50 psi shut off pressure Never install a chlorinator upstream of the filter always downstream and with a check valve in between the chlorinator and filter A positive shut off valve is not recommended at the outlet of the filtering system If the system is ever run with such a valve closed the internal air relief system becomes inoper ative and an explosive situation could exist Additionally running the system with no flow will seriously damage the equipment A positive shut off valve is also not recom mended at the waste port of the valve If the system is ever run with such a valve closed the filter pressure will go abnormally high and increase the risk of vessel separation Additionally running the system with no flow wil
11. efully remove filter com ponents from carton Mount filter on a permanent slab preferably concrete poured in a form or on a platform constructed of concrete block or brick DO NOT use sand to level the filter or for pump mounting as it will wash away Provide space and lighting for routine main tenance access Do not mount electrical con trols over filter In respect for the potential for injury from any pressurized system it is a good common sense precaution to always stand clear of the filter whenever starting the pump If you have a Multi port Valve assemble the valve to tank being sure O rings on valve fittings are in place and are clean Use a lub ricant applied lightly such as petroleum jelly silicone grease Mytilube or similar product on O rings and O ring grooves prior to assembly If you have a two position slide valve align the valve with tank so that the handle is toward the top of the tank push valve into ports and turn the valve nuts snugly on tank fittings Itis not necessary to cinch valve nuts to tank fitting beyond hand tightness Assemble piping and pipe fittings to pump and valve All piping must conform to local and state plumbing and sanitary codes Useteflontape or plastojoint stick on all male connections of pipe and fittings Use only pipe compounds suited for plastic pipe Sup port pipe to prevent strains on filter pump or valve Long piping runs and el
12. flowing from the filter by observing the flow from the inlet fittings in the wall of the pool As a general rule backwashing is needed when the flow rate becomes about 2 3 the rate of a clean filter D FILTER DISASSEMBLY ASSEMBLY Before Disassembling Filter Backwash filter according to instructions under Filter Backwash Procedure but stop after in struction 7 Do not precoat with new D E DISASSEMBLY 1 Be sure pump is turned off and all pressure has been released from system NAUTILUS FNS MANUAL WARNING Releasing clamp with pressure on system will cause tank lid to blow off causing severe injury or major property damage NEVER adjust tighten or loosen V band clamp when tank is under pressure 2 Remove filter drain plug and drain all water from tank CAUTION Clamp hardware and filter sur face could have sharp edges which can cause bodily injury if improperly handled Please use caution when performing the following procedures 3 Loosen clamp nuts alternately until one is removed Remove spring and washers noting part orientation Lift clamp assembly off of filter NOTE Filters manufactured in 1992 may not contain spring and washers on clamp 4 Tank halves may have a tendency to stick together In order to separate tank halves it may be necessary to strike the tank top using the palm of your hand with a glancing upward movement Figure A Proceed gradually around the tank using this mo
13. ing after backwashing 13 Thoroughly clean air relief screen on top of manifold Be sure to remove all debris from screen 14 Follow filter assembly procedure Page 4 WARNING To avoid severe injury or major property damage exactly follow instructions under Assembly Page 5 15 If unit is returning to service see Initial Startup Page 4 16 If cleaning is part of seasonal shutdown see Winterizing procedures below I WINTERIZING PROCEDURE 1 Backwash and manually clean the filter fol lowing the recommended procedures 2 We recommend removing the internal grid assembly and store in a dry area 3 Reassemble the filter following the recom mended procedures 4 Open air bleeder valve Open all system valves Position multiport valve between port positions winterize position to allow pas sage to all ports and relieve pressure on the sealing gasket e Remove drain plugs from filter separation tanks and pumps 6 Drain system piping 7 We recommend covering the equipment with a tarpaulin or plastic sheet to inhibit deterio ration from the weather NAUTILUS FNS MANUAL J REPLACEMENT PARTS PAGE 9 NAUTILUS FNS FIBERGLASS D E FILTER mss ow asn os NOTES The Nautilus FNS titer was constructed one of Two types o tower assembies hem 12 The specific part may be dentifed by measunng di ment A shown the replacement part Arawi DIM A
14. l seriously damage the equipment Never store pool chemicals within 10 ft of your pool filter and pump Pool chemicals are corrosive and should always be stored in a cool dry and well ventilated area NAUTILUS FNS MANUAL WARNING Chemical fumes and or spills can cause severe corrosive attack to the filter and pump structural metallic components Structurally weakened filter components can cause filter or valve attachments to blow off and could cause severe bodily injury or property damage C INITIAL START UP 1 On a new pool clean the pool before filling with water Excess dirt and large particles can cause damage to pump and filter 2 Check clamp assembly for tightness See fil ter disassembly and assembly procedures WARNING Improper tank assembly could cause the tank top to blow off and cause severe bodily injury and or property damage 3 Move valve handle to filter position Open air bleeder screw Item 1 on the filter top Check pump strainer pot to be sure it is full of water Replace pump lid WARNING Air entering filter and or the filter unit not closed correctly can cause the tank top to blow off and could cause severe bodily injury and or property damage 4 Openallsuction and return line valves Stand clear of filter during the following operations 5 Start pump The tank will fill with water and expell air from the air bleeder Close the air bleeder screw only after a stead
15. rosion resistant materials and when installed operated and maintained in accordance with these instructions your filter will provide years of service Your filter must be charged with D E at initial start up This D E will cover the vertical filter grid cloth within the filter with a thin coating Dirty water flows from the pool through the control valve on the side of the filter and into the lower side connection of the filter part 32 The dirty water flows through the vertical grid elements part 17 where dirt is filtered out by the D E Coating All grid elements channel cleaned water into a manifold system part 16 which exits at the upper side connection part 28 and through the control valve to return back to the pool By continuously diluting the dirty pool water with clean water the entire pool becomes gradually cleaned Your filter and pump should be sized to circulate from 2 to 4 times the volume of water in the entire pool through the filter every day to accomplish the cleaning As dirt is collected in the coating of D E in the filter the pressure will rise and the flow of water PAGE 2 to the pool will be reduced See other sections in the manual to determine when to clean the filter and how to choose the appropriate cleaning method This filter will only remove suspended matter and does not sanitize the pool The pool must be sanitized and PH balanced for sparkling clear water Your filtration system must be con
16. tank with rubber hammer to assist seating of clamp If filter is an earlier model without spring clamp tighten each nut to 120 in Ibf 7 Use only those components supplied with filter or PAC FAB replacement parts when dealing with the bands and spring tensioning devices WARNING Use of non original equipment parts on band clamps with spring tensioning devices may cause these tension ing devices to mal function resulting in improper clamp installation Improper clamp installation could cause the filter top to blow off and cause severe person al injury and or property damage CAUTION Do not over tighten the clamp band Tightening the clamp band beyond recommended proce dures may damage the clamp band and cause unexpected failure sudden release of pressure and injury or damage Over tightening may also deform tank seal causing leakage at band clamp Corroded components cannot be repaired and must be replaced If you are experiencing corrosion consult your pool service company or dealer WARNING Always visually inspect filter components during normal servicing to insure structural safety Replace any item which is corroded bent or otherwise visually defective Defective filter components can allow the filter top or attachments to blow off and could cause severe bodily injury or property damage NAUTILUS FNS MANUAL E CLEANING FREQUENCY The filter on a new pool should be backwashed disassembled and cleaned af
17. ter approximately 48 hours of operation to clean out plaster dust and or construction debris Once a new pool has been established the dirt collected will gradually increase the filter pres sure When the filter pressure increases 7 to 10 psi over the initial pressure or when the flow has been reduced by about 1 3 from when the filter was clean it is time to backwash the filter Dif ferent areas and water conditions will have dif ferent normal cleaning intervals If at any time the starting pressure after back washing the filter indicates 2 to 6 psi higher than normal starting pressure it is time to perform a manual filter cleaning or a chemical cleaning procedure in the worst cases It is a good idea to disassemble the filter and perform a chemical cleaning procedure twice a year to remove accumulated body oils etc In areas that have freezing winter tempera tures protect equipment by backwashing and either manually cleaning or chemically cleaning before winter storage Be sure all water is drained from the filter using the drain plug The air bleeder must be opened as well as all other valves F FILTER BACKWASH PROCEDURE CAUTION To prevent equipment damage and possible injury turn pump OFF before changing valve position NOTICE When backwashing with a sepa ration tank see Separation Tank Owner s manual for instructions 1 Stop pump Ensure that the backwash line is open and any valving is adjusted to allow
18. the free flow of water 2 Change valve positions a If using Multi port Valve set to backwash position b If using Two Position Slide Valve raise handle to fully extended position 3 Stand clear of filter READ AND FOLLOW ALL SAFETY INSTRUCTIONS 4 Start pump this will circulate water back wards through the filter to flush D E cake and contaminants into the separation tank or to waste 5 If system has a sight glass backwash until water in glass runs clear 6 If system does not have a sight glass a Backwash one minute b Stop pump and change valve position 1 If using Multiport Valve set to rinse position 2 If using Two Position slide valve push handle down to filter position CAUTION Stop pump before changing valve settings c Stand clear of filter d Restart pump run for one minute e Repeat steps a b c and d three times Cycling is effective when cake and contaminants are difficult to break and flush out of the filter NOTICE Do not vacuum pool while back washing filter 7 Stop pump 8 Open air bleeder screw and release all pres sure from tank and system 9 Follow Initial Start Up procedure to restart system 10 Compare pressure reading on gauge with reading recorded after initial start up The two readings should be very close if not do Manual Filter Cleaning Procedure G MANUAL FILTER CLEANING NOTICE At least once a year disassemble and clean filter regardless
19. tion until the top loosens j ty FIGURE A e a J 4 T I C cy A E aM i i Q q J 5 Being careful not to damage tank seal lift upper tank shell off of lower tank sHell ASSEMBLY 1 Thoroughly clean air relief filter screen on top of manifold EVERY time filter is opened Be sure to remove all debris from screen 2 Inspecttank seal Item 22 for cuts nicks etc If damaged replace with a new one READ AND FOLLOW ALL SAFETY INSTRUCTIONS 3 Clean tank seal area of tank shell both halves and tank seal 4 Apply a small amount of silicone based lubricant to the tank seal Note PAC FAB recommends silicone lubricants because they are insoluable in water and therefore pro vide lubrication for extended periods are nontoxic and are compatible with nearly all plastics and elastomer materials except silicone rubber Excellent lubricants include Dow Corning 111 4 or 47 Call Dow Corning at 1 800 248 2481 for product availability pricing or technical information Parker Super O Lube Do not use Parker O Lube This product is widely available at most distributors of rubber prod ucts 5 Carefully install tank seal and upper tank shell CAUTION Be sure upper tank shell contacts tank seal surface evenly and seal area is clean and free from dirt etc 6 Install clamp springs washers and nuts Tighten nuts evenly and alternately until spring coils touch each other Tap clamp around
20. y stream of water comes out 6 Remove the skimmer lid put the recommend ed amount of diatomaceous earth D E into the skimmer The D E will be drawn into the filter and deposited evenly upon the grid ele ments Now the filter is providing the pool with bright clean water NOTICE Do not operate filter without D E charge for more than two minutes Do not use more than the recommended amount of D E in your filter READ AND FOLLOW ALL SAFETY INSTRUCTIONS PAGE 4 D E RECOMMENDATION The amount of D E should be between 1 and 1 1 2 pounds for each 10 square feet of filter area MODEL POUNDS OF D E NOTICE 1 2 pound of DE will fill a 13 oz coffee can 7 On a new pool installation it will require approximately one week to obtain and main tain the water clarity of which your filter is capable It is recommended to disassemble and clean the filter after initial pool clean up approximately 48 hours of operation Follow the instructions given in this manual for dis assembly cleaning and reassembly 8 Be sure to note the operating pressure of the filter when it is clean and properly charged with D E As the filter removes dirt from the pool the pressure will gradually increase As a guide when the pressure has increased 7 to 10 psi from the initial reading it is time to backwash the filter Alternately another method for determining when to backwash the filter is by judging a drop in the amount of water
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