manuel d`utilisation owner`s manual
Contents
1. 15 Adjusting the injection 15 International conversions 16 Changing seals in the injection assembly 17 Changing the dosing 17 Changing the motor 18 REFERENCE DESIGNATION 19 20 LIMITED WARRANTY 22 DOSATRON INTERNATIONAL 2 SPECIFICATIONS D25F D25F0 2 D25F2 D25RE1500 D25F1 Practical operating flow range 22 2 2 2 2 Operating pressure bar 0 30 6 0 30 6 0 30 6 0 30 6 PSI 4 3 85 4 3 85 4 3 85 4 3 85 Externally adjustable or fixed injection rate 0 8 1 0 2 2 0 07 0 2 ratio MINI 1 128 1 100 1 500 1 50 1 1500 ratio 1 500 Concentrated additive injection MINI 0 08 0 10 0 2 0 2 0 007 MAXI I h 20 25 5 50 5 US FI oz min MINI 0 045 0 06 0 011 0 11 0 004 US 0 088 0 11 0 022 0 22 0 022 Maximum operating temperature 2 2 Hydraulic motor capacity for every 2 clicks of the piston NOTE The Dosatron is not preset UNIT SIZE Diameter cm 12 7 12 7 12 7 12 7 5 5 5 5 Total height2. DOSATRON WATER POWERED DOSING TECHNOLOGY D25F D25F1 D 25 F 0 2 5 2 D 25 RE 1500 ee D 25 RE 10 IE D25RE 2 IE PO manuel d utili SPI owner s manuale d uSo i lt 5 em Qebruikedd nee AMAN rs lt Instrukcja obstugi TO Manual de utilizacao Nee DOSATRON WATER POWERED DOSING TECHNOLOGY SERVICE CLIENTELE CUSTOMER SERVICE KUNDENBETREUUNG SERVIZIO CLIENTI DEPARTAMENTO CLIENTELA KLANTENSERVICE DZIA OBS UGI KLIENTA SERVI O DE APOIO AO CLIENTE WORLDWIDE EUROPE DOSATRON INTERNATIONAL S A S Rue Pascal B P 6 33370 TRESSES BORDEAUX FRANCE Tel 33 0 5 57 97 11 11 Fax 33 0 5 57 97 11 29 10 85 e mail info dosatron com http www dosatron com NORTH amp CENTRAL AMERICA DOSATRON INTERNATIONAL INC 2090 SUNNYDALE BLVD CLEARWATER FL 33765 USA Tel 1 727 443 5404 Fax 1 727 447 0591 Customer Service 1 800 523 8499 http www dosatronusa com This document does not form a contractual engagement on the part of Dosatron International and is for information only Dosatron International reserves the right to alter product specification or appearance without prior notice DOSATRON INTERNATIONAL S A S 2004 You have just become th
3. I Std l u de Pressure loss Druckverlust gt PSI Perdite di carico Perdidas de carga Drukverlies gt in Bar kgf cm 8 6 4 3 20 18 16 14 a 0 N 51 DOSATRON INTERNATIONAL 25 000 22 2500 1500 1250 1000 500 750 250 D bit Water flow rate Durchsatz gt GPM D 25 F 08 Pertes de charges Pressure loss Druckverlust gt in PSI m 8 g 3 E x T A N 2 N 9 g M 5 o 2 2 3 g P a S 3 5 a E e f J Perdite di carico Perdidas de carga Drukverlies gt in Bar kgf cm DOSATRON INTERNATIONAL 26 25 1500 Pertes de charges Pressure loss Druckverlust gt PSI 2 e 2 N al 2 3 3 3 o A g N E G o 5 HA N 5 o 5 e 2 5 2 a 8 a N 8 5 E amp i 2 5 5 a 8 e m 19 d Perdite di carico Perdidas de carga Drukverlies gt Bar kgf cm DOSATRON INTERNATIONAL 27
4. A filter is recommended and requi red for the warranty to be valid Installing the DOSATRON on a bypass enables clean water to be supplied without operating the DOSATRON and the DOSATRON to be easily dismantled When connecting an installation to the public water supply you must res pect the rules and regulations in force in the country A Valve f h n Filter Fig 4 EXCESSIVE FLOW as an indication valve Fig 5 If your DOSATRON clicks more than 40 times that is 20 cycles 15 seconds you are close to the maximum flow limit If you need more flow you must install a DOSATRON with a higher capacity of flow D 25 RE 10 30 times 15 cycles DOSATRON INTERNATIONAL 12 Putting the Dosatron into order Partially open the water inlet valve Press the bleed button on the top of the DOSATRON Fig 6 When a constant flow of water is seen coming from around the bleed button no more spitting of air release the button Open the water inlet valve slowly the DOSATRON is self priming Operate the DOSATRON until the product to be injected is drawn up into the doser body the product is visible through the plastic tube The DOSATRON makes a characteristic click clack noise when working Fig 6 NOTE The time required to prime the suction tube depends on water flow rate ratio setting and length of the suction tube To
5. cm 33 9 31 9 33 9 39 8 13 3 8 12 9 16 13 3 8 15 11 16 Width cm 16 16 16 16 1 6 5 16 6 5 16 6 5 16 6 5 16 Weight kg 1 0 1 0 1 0 1 2 bs 2 2 2 2 DID 27 SHIPPING CONTENTS 1 DOSATRON 1 mounting bracket for DOSATRON 1 suction tube of concentrated additive 1 strainer 1 injection suction tube for IE model 1 owner s manual DOSATRON INTERNATIONAL 3 25 09 D25RE2 D25RE4 25 5 25 10 D25RE2IE D25RE5IE 0 25 10 IE 10 MIN 2 5 MAXI 1 3 US Pint min 11 US GPM 2 0 30 6 0 30 6 030 6 030 6 0 3 4 4 3 85 43 85 42 85 42 85 43 58 01 0 9 02 2 0 5 4 1 5 3 10 1 1000 1 500 1 200 1 100 1 33 1 112 1 50 1 25 1 20 1 10 0 01 0 02 0 05 0 3 22 5 50 100 125 200 0 0056 0 011 0 028 0 056 0 17 0 099 0 22 0 44 0 55 0 88 40 104 F 20x27 mm 3 47 about 0 45 I 0 118 US Gallons see chapter ADJUSTING THE INJECTING RATE i F Fr 12 7 12 7 12 7 12 7 12 7 5 5 5 5 5 39 8 39 9 40 2 44 44 15 11 16 15 11 16 17 5 16 17 5 16 17 5 16 16 16 16 16 16 6 5 16 6 5 16 6 5 16 6 5 16 6 5 16 1 2 1 2 1 2 1 2 1 2 2 7 Pail 2 7 ell 2 7 PACKAGE SIZE 52 x 16 8 x 17 5 cm 20 1 2 x 6 5 8 x 6 7 8 PACKAGE WEIGHT 1 7 kg environ 3 7 US Ibs DOSATRON INTERNATIONAL 4 Precise simple reliable Installed directly in the water supply line the DOSATRON operates by using water pressure as the power source Water activates the DOSATRON which takes up the requir
6. 18 C Fig 18 A B T E AI Models Models D25F0 2 RE5 RE 10 D25F F1 F2 RE 1500 RE2 Unscrew the screw top by hand Fig 19 C and remove it Remove the motor pis ton Fig 20 M by pulling it up Change and reas semble in the reverse order to the above Refit the screw top take care not to damage its seal and tighten by band Fig 19 Fig 20 E DOSATRON INTERNATIONAL 18 Reference Designation REF 2 D25RE2BPVFP 105140745 Serial x BER Dosage or ratio BP integrated by pass AO Organic Acid Color Blue PP P White PVDF R Red PP V Green PP J Yellow PP O Orange PP Others extensions consult us DOSATRON INTERNATIONAL 19 Troubleshooting SYMPTOM Motor piston DOSATRON does not start or stops Water flowing back into concentrate container CAUSE Piston stalled SOLUTION Reset piston by hand Air has not been bled from unit Bleed air from unit by bleed button Maximum flow exceeded 1 Reduce flow restart unit 2 Unscrew the top cap Take off the piston and check piston valves seals to ensure correct pos
7. SUCTION VALVE Fig 15 Fig 16 Fig 17 Turn off the water supply and allow the pressure to drop to zero Unscrew the nut Fig 15 E and pull downwards to remove the suction tube Fig 16 T Unscrew and remove the nut Fig 16 N Pull downwards to remove the suction valve assembly Fig 17 Rinse copiously the different parts with clean water re assemble them Fig 17 Put the valve back Fig 17 P in the doser body Fig 17 D push it in the back Check that the return spring is working Re assemble in the reverse order to the above by hand CHANGING THE DOSING SEALS Change the seals the suction valve and the barbed fitting To do this please refer to the drawings of the different models at the end of this manual Change the seals once a year Turn off the water supply and allow the pressure to drop to zero Take off the suction tube of product remove the injection assembly as des cribed in the previous chapter Pull downwards to remove the injection assembly Re assemble in the reverse order to the above DOSATRON INTERNATIONAL 17 CHANGING THE MOTOR PISTON with pressure off Turn off the water supply and allow the pressure to drop to zero Take off the suction tube of product Fig 18 A Unscrew the injection part by hand or by means of a long cruciform screwdri ver according to the dispenser type Fig 18 A Pull downwards to remove the dosing part Fig
8. bleed air from the suction tube and accelerate priming set injection rate at maximum Once the DOSATRON is primed adjust to the required injection rate see ADJUSTING THE INJECTION RATE The DOSATRON may be fitted in its upper part with the function by pass optional equipment By pass in ON the DOSATRON works and the concentrate is drawn up By pass in OFF the DOSATRON is stopped and does not draw up the product DOSATRON INTERNATIONAL 13 Maintenance RECOMMENDATIONS 1 When using soluble products 2 Before putting the DOSATRON to be made up into solutions we into operation after a non use period recommend the periodic dismant remove the motor piston and soak ling of the entire dosing part it into lukewarm water see CLEANING 40 104 overnight AND REFITTING THE This helps to dissolve SUCTION VALVE any deposits which may CHANGING SEALS have dried onto the piston IN THE INJECTION motor ASSEMBLY Thoroughly rinsing all the ele ments of the dosing part with t O rinc ring water and re assembling them after having previously lubri cated the seal Fig 7 with a silicone lubricant in the case of difficulty in re fitting ftu in case of freezing temperature Turn off the water supply Remove the injection assembly _ see CHANGING THE MOTOR PISTON Remove the screw top and the Water m Water motor piston inlet outlet Disconn
9. of the D sleeve into line with the desired injection rate Tighten the blocking ring Fig 11 B Model in the drawing D 25 RE 2 Fig 11 Fig 12 DOSATRON INTERNATIONAL 15 INTERNATIONAL CONVERSIONS Principle Setting at 1 1 100 1 part of concentrate for 100 parts of water Ex Setting at 2 2 100 2 parts of concentrate for 100 parts of water Ratio 1 50 CHANGING SEALS IN THE INJECTION ASSEMBLY with pressure Frequency Once per year IMPORTANT Use no tool or metallic utensils ADVICE Before dismantling any part of the injection assembly it is advi sable to operate the DOSATRON injecting clean water so as to rinse through the injection system In this way risks of contact with concentra ted solutions in the injection assembly are minimized During any such intervention wear protective eyewear and gloves METHOD OF REMOVING SEAL Fig 13 Between finger and thumb pinch the component and the seal push towards one side to deform the seal Fig 14 Increase the deformation to grip the part of the seal thus exposed and pull it out of its groove Clean the seal seating without any tools Refitting is done by hand It is very important that the seal is not twisted once in place as this would impair its efficiency Fig 13 DOSATRON INTERNATIONAL 16 CHANGING SEALS IN THE INJECTION ASSEMBLY cont CLEANING AND REFITTING THE
10. RON distributor for service or parts DOSATRON INTERNATIONAL 8 ASSEMBLING THE DOSATRON ASSEMBLY SHOULD BE CARRIED OUT WITHOUT THE USE OF TOOLS The DOSATRON is delivered with a mounting bracket a suction tube with a strainer The bracket enables the DOSATRON to be fixed to a wall Snap the DOSATRON into the bracket by fitting the two lugs on one side of the body Fig 1 A into the corres ponding holes in the bracket Fig 1 B and springing the bracket arms apart until the other 2 lugs click into place Remove the plastic caps Fig 1 2 C which block the inlet and outlet of your DOSATRON before connecting to the water supply The DOSATRON can be connected to the water supply by means of 0 20 x 27 3 4 bore flexible hose and hose tail fittings with hose clips Make certain that water flows in the same direction as the arrows on the motor body RECOMMENDATIONS gis gt 20 thus 2kg m Remember 1 N m 0 1DaN M DOSATRON INTERNATIONAL 9 EXTERNAL INJECTION IE MODELS In order to use corrosive concentrates the external injection model DOSATRON is also delivered with an external injection hose Fig 2 D CAUTION screw in the components carefully MADE IN FRANCE Fig 2 DOSATRON INTERNATIONAL 10 ASSEMBLING THE DOSATRON cont The DOSATRON is delivered with a suction tube cut it to th
11. al Position correctly the screw top THE MANUFACTURER DECLINES ALL RESPONSIBILITY IF THE DOSATRON IS USED IN CONDITIONS THAT DO NOT CORRESPOND TO THE OPERATING INSTRUCTIONS AS INDICATED IN THIS MANUAL DOSATRON INTERNATIONAL 21 Limited warranty DOSATRON INTERNATIONAL S A S will provide for replacement of all parts shown to be defective in material or workmanship during a period of twelve months from the date of purchase by the original purchaser To obtain warranty replacement of a part the DOSATRON must be returned with original proof of purchase receipt to the manufacturer or authorized distributor and thereafter recognized as defective after examination by the technical ser vices of the manufacturer or distributor The DOSATRON must be flushed of any chemical and sent to the manufac turer or distributor prepaid but will be returned free of charge once repairs are made if found to be covered by the warranty Any repairs made under warranty will not extend the initial warranty period This warranty only covers circums tances where the part has failed due to defects caused by the manufacturing process This warranty is invalid if the defects are found to be due to the product s misuse inappropriate use of tools lack of maintenance or defective ins tallation or environmental accidents or corrosion by foreign bodies and liquids found within or in proximity to the DOSATRON Before using any aggressive che
12. e needed length enabling its use with a large capacity concentrate container The tube must be fitted with its strainer and weights The instructions for fitting the tube are to be found in the specific chapter NOTE The maximum suction height is 4 meters 13 vertical feet Fit the tube equipped with its strainer and its weight and immerse it in the solution to be injected IMPORTANT Do not put the suction tube strainer on the bottom of the stock solution container The strainer must be suspended at least 10 cm 4 above the bottom of the tank to avoid sucking up the insoluble par ticles that may damage the injection assembly Fig 2 Do not put the strainer on the ground A 4 WHAT YOU SHOULD DO Fig 2 d 3 WHAT YOU MUST DO Fig 3 hd C 5 t mi in E amic Under no circumstance should the solution level be above the water inlet of the DOSATRON to avoid siphoning situations DOSATRON INTERNATIONAL 11 INSTALLATION HINTS The DOSATRON can be connected to the main water line directly Fig 4 on a by pass Fig 5 recommended If your flow rate is above the opera ting limits of the DOSATRON see EXCESSIVE FLOW To prolong the working life of the DOSATRON it is advisable to install a filter ex 300 mesh 60 microns depen ding on your water quality upstream This is imperative if the water contains impurities or particles especially if the water comes from a well
13. e owner of one of the latest in the line of DOSATRON water powered metering pumps and we congratulate you on your choice The development of this model is the result of over 30 years experience Our engineers have placed the DOSATRON series at the forefront of technical development in the field of in the field of DOSATRON water powered metering pumps This DOSATRON will as time goes by prove itself to be a most faithful ally A little care and attention regularly spent will guarantee you an operation in which the word breakdown has no place THEREFORE PLEASE READ THIS MANUAL CAREFULLY BEFORE PUTTING THE DOSATRON INTO OPERATION Important The complete model reference and the serial num ber of your DOSATRON is stamped on the pump body Please record this number in the space below and refer to it when you call your distributor for infor mation parts and service DOSATRON INTERNATIONAL 1 Summary INSTALLATION PAGE Precautions uu ER 6 Assembling the 9 Installation hints 12 PUTTING INTO ORDER Using for the first time lu 13 MAINTENANCE uu uu atat randa 14 How to drain the 14 Fitting the suction 2 41 1 1 15 Connecting the external injection
14. ect the water inlet and out let fittings Remove the pump body from the mounting bracket unscrew the Fig 8 screw top and empty remaining water The DOSATRON can now be reas sembled having first cleaned the 9 seal Fig 8 f L DOSATRON INTERNATIONAL 14 FITTING THE SUCTION TUBE If the DOSATRON has already been hs used please imperatively refer to 1 PRECAUTIONS 10 Unscrew the nut Fig 9 at the bottom of the injection assembly and put it over the hose 5 Push the tube onto the dip tube insert l er B 8M 1 as far as it will go and screw up the AM nut hand Fig 9 Fig 10 lI Identical process for viscous pro g 6 g 12 ducts option Fig 10 E we option V i Model in the drawing D 25 RE 2 E CONNECTING THE EXTERNAL INJECTION IE b q D If the DOSATRON has already been used please imperatively refer to Tm TT LL p ter PRECAUTIONS LP m u ADJUSTING THE INJECTION RATE with pressure off IMPORTANT Use no tools ADJUSTMENT MUST MADE WHEN Frees THERE IS NO PRESSURE IN THE 1 1 DOSATRON Turn off the water supply and allow the pressure to drop to zero Unscrew the blocking Fig 11 Fig Screw or unscrew the adjusting sleeve f f Fig 12 D so as to bring the top
15. ed prior to the DOSATRON see accessories if a filter is not installed abrasive substances will cause the DOSATRON to deteriorate prematurely 3 WATER HAMMER EXCESSIVE FLOW For installations subject to water DOSATRON INTERNATIONAL 7 check valve ball check must be fitted pressure flow control system For automatic installations slow opening and closing solenoid valves are preferable n an installation where DOSATRON serves several sectors the closing of one sector and the opening of another sector must be done at the same time simultaneous operation of the solenoid valves 4 INSTALLATION LOCATION The location of the DOSATRON and concentrate container should be accessible but should never present a risk of pollution or contamination It is recommended to label all water lines with a warning about the injected solution i e Not For Human Consumption 5 MAINTENANCE Rinse the injection areas after using the DOSATRON To do this insert suction tube into container of clean water 1 liter 0 264 US GALLONS Routine maintenance once a year will add to the life of your DOSATRON Replace the dosing seals as well as the suction tube annually to ensure proper injection 6 SERVICE This DOSATRON was tested prior to packaging Complete maintenance and seal kits are available Call your DOSAT
16. ed percentage of concentrate Inside the DOSATRON concentrate is mixed with water Water pressure forces the solution downstream The dose of concentrate will be directly proportional to the volume of water entering the DOSATRON regardless of variations in flow or pressure which may occur in the main line Motor piston Solution water Clear water mi additive Dosing piston Adjustment ratio Concentrated additive to be dosed INTERNATIONAL 5 Installation PRECAUTIONS 1 GENERAL REMARKS When connecting a DOSATRON either to the public water supply or to its own water source you must respect the regulations in force concerning protection of the source i e backflow prevention etc When connecting the DOSATRON to the water supply ensure that the water flows in the direction of the arrows on the unit In case where the water installation is higher than the DOSATRON itself there is a possible risk of water and concentrate flowing back through the DOSATRON In this case installing a non return valve downstream is recommended It is recommended that you should place an anti siphon valve on the downstream side of the dosing pump in installations in which there is a risk of siphoning Do not install the DOSATRON just above an acid container risk of acid fumes attacking the DOSATRON and protect it from possible contact with corrosive product
17. ement you can hear the motor piston click a volumetric hydraulic m TF 4 motor piston m gt 4 connected f to E E a UL a dosng piston Jr 2 clicks 1 motor cycle Once in the Once in the The stroke volume lt position down posi tion The speed of the motor is proportional to the flow of water passing through the system Calculation Calculation m Calculation of water flowin minute for 1 hour volume in Itres Number of clicks 15 seconds 60 clicks 1 cycle Stroke m Calculation of water flow in GPM C2lculation volume from lit Number of clicks 15 seconds x d 0 45 gay Dials ONP clicks 1 cycle NOTA This method of calculation cannot replace a flow meter It is given only as an approximate guide DOSATRON INTERNATIONAL 23 de Pressure loss Druckverlust gt PSI gt q 2 9 g 2 2 g e D 9 2 6 z 3 2 5 1000 1500 2000 2500 3000 D bit Water flow rate Durchsatz gt Portata Caudal Doorstroming gt in I h I Std l u 500 e 1 8 6 1 44 0 amp 4 gt 0 Perdite di carico Perdidas de carga Drukverlies gt in Bar DOSATRON INTERNATIONAL 24 Portata Caudal Doorstroming gt
18. ition Motor piston is damaged Contaminated worn or missing check valve parts Return unit to your service center for repair Clean or replace it No suction of concentrate The piston motor has stopped See Motor piston section Air leak inlet in the suction tube Check the tightness bet ween nut and suction hose Blocked suction tube or clogged strainer Clean or replace it Missing or worn suction check valve seal Clean or replace it Missing or worn plunger seal Clean or replace it Worn injection stem Replace it DOSATRON INTERNATIONAL 20 SYMPTOM CAUSE SOLUTION Under injection Suction of air 1 Check the tightness of the nuts in the injection area 2 Check suction tube Dirty or worn check Clean or replace it valve seal Maximum Reduce flow flow exceeded cavitation Worn plunger seal Replace it Worn injection stem Replace it Leaks in the vicinity Injector sleeve Replace it of the fixing ring seal is damaged or under the body positioned incorrectly housing Leaks between the Injector stem seal Replace it setting sleeve and damaged positioned the blocking ring incorrectly or missing Leaks between the Screw top seal is Unscrew the screw top body and screw damaged positioned clean the seal seating top incorrectly or missing replace or change the se
19. mi cals please consult your distributor to confirm compatibility with the dosing pump The seals and o rings are not covered under warranty nor is damage to the DOSATRON caused by water impurities such as sand A filter 300 mesh 60 microns depending on your water quality must be used in front of the DOSATRON for the warranty to be valid DOSATRON INTERNATIONAL S A S declines any responsibility if the DOSATRON is not used in com pliance with the operating instructions and tolerances as indicated in this owner s manual This warranty gives you specific legal rights and you may also have other rights which vary from state to state But any implied warranty or mer chantability or fitness for a particular purpose applicable to this product is limited in duration to the time period of this written warranty or any implied warranty The manufacturer or authorized distri butor shall not be liable for incidental or consequential damage such as any economic loss resulting from breach of this written warranty or any implied war ranty There are no warranties express or implied which extend beyond those described above relating in any way to products used in conjunction with DOSATRON INTERNATIONAL S A S products Don t hesitate to call your distributor or Dosatron for any after sales service DOSATRON INTERNATIONAL 22 KNOW YOUR FLOW A SIMPLE METHOD THE DOSATRON IS COMPOSED OF In its up and down mov
20. s Protect the DOSATRON from freezing temperatures by draining it and store it away from sources of excessive heat Do not install the DOSATRON on the suction side of the supply pump risk of siphoning It is the responsibility of the owner operator to replace the injection seals annually to ensure precise injection The setting of the Dosatron s dosing rate is the sole responsibility of the user The user has to respect the recommendations given by the manufacturer of the chemical product A WARNING You must comply with the safety instructions when installing using and performing maintenance on the DOSATRON water powered dosing pump use appropriate tools protective clothing and safety goggles when working on the equipment and install the DOSATRON so that it can be used without presenting a risk Follow the instructions in this manual and take the appropriate safety measures for the water temperature and the type of liquid being drawn up Take extreme care when using dangerous substances DOSATRON INTERNATIONAL 6 PRECAUTIONS cont solvents acids and corrosive toxic caustic and inflammable substances etc For dosing of these substances consult with your distributor before use in order to confirm they are compatible with your dosing pump A dosing pump with the option is required when installing the DOSATRON on a hot water supply 60 C 140 F Max The higher tempera
21. ture increases the risk and danger of the aforementioned substances It is strongly recommended that you place signs on the dosing pump and the hot water installation warning of this risk and that you comply with legislation in force WARNING Personnel charge of installing using and maintaining this equipment must read this manual It is the responsibility of the owner operator to check that the flow and pressure of the installation do not exceed the DOSATRON characteristics Adjustmentmust be made when there is no pressure in the Dosatron Turn off the water supply and allow the pressure to drop to zero lt is the responsibility of the owner operator of the DOSATRON to determine the correct amount of solution and injection ratio to obtain the desired result An air inlet an impurity or a chemical attack on seal can interrupt the dosing function It is recommended to periodically check that the solution is being correctly drawn up into the DOSATRON Change the suction tube as soon as it seems damaged by the chemical Relieve the pressure after use advised Rinsing of the DOSATRON is required when changing chemicals before handling the DOSATRON to avoid any contact with the chemical All assembly should be done without tool hand tighten only 2 WATER WITH HIGH PARTICLE CONTENT A ex 300 mesh 60 microns depending on your water quality water filter must install
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